US2638725A - Paper roll wrapping machine - Google Patents

Description

May 19, 1953 A. 1'.'HURTER ErAL 2,633,725

PAPER ROLL WRAPPING MACHINE med lay 12, 195o 8 Sheets-Sheet 1 May 19, 1953 A. T. HURTER ETAL l 2,638,725

PAPER ROLL WRAPPING MACHINE Filed May l2, 1 950 8 SheetS--SheerI 2 May 19, 1953 A. T. Hum-ER Er/u. 2,633,725

PAPER ROLL WRAPPING MACHINE 'Filed May 12, 1950 B Sheets-Sheet 5 May V19, 1953 A. T. HURTER ErAL 2,638,725

PAPER ROLL WRAPPING MACHINE Filed May 12, 1950 8 Sheets-Sheet 4 I 0120 Fifa@ l 4 o .14216 May 19, 1953 A. T. HURTER Erm. 2,638,725

PAPER ROLL WRAPPING MACHINE F'iled May 12, 1950 8 Sheets-Sheet 5 May 19, 1953 A. T. HURTER ETAL 2,638,725

PAPER ROLL WRAPPING MACHINE Filed May l2, 1950 8 Sheets-Sheet 6 v5-5-11 w @df/ May l9, 1953 A T HURTER ETAL 2,638,725

PAPER ROLL WRAPPING MACHINE Flled May 12, 1950 8 Sheets-'Sheet :l: 1&1 /lf'eg zl'" f7 e C, z 3&3 35o 3&7 j

May 19, 1953 A. T. HuRTr-:R ETAL 2,638,725

v PAPER ROLL wRAPPNG MACHINE 216 213 1Q, E I zio 2 @M E Patented May 19, 1953 A VraritaRoLL WRAPPNG MACHINE lred,T.`-IIurter and Andr C; Attendu, Montreal, Quebec',`lCa"nada`, `:dtssignors to Stadler, Hurter &` C`oinpany,` WestMontreal, Quebec, Canada Application' May` `12, 1950, SeriaINo', 161,554

u u `26` Claims.

1 e The present invention relates torollwrapping machines l and are more specifically :to `machines of this nature `adapted to wrap Vcylindrical rolls `of considerable size; for example,` rolls of news- ;print or thelike.

; It is common practicerin` most paperto Vwrap the large rollstof newsprintor other paper inanouter wrapper comprising several layers` of covering paper prior to their shipping orustorage.

i As these rolls of paper-Aare so bigusuall-y varying ,.ingtsize fromfaboutflfto /llf-in diameter `and from 18? l to 84' Ain length,tthev manual `perform- ;ance of this operation consumes agreat deal of time and 'labour and requires a considerable area of clear floor,` space. i l

problemby providing various machinesdesigned to `perform this wrap-ping operation `mechanically but to, date, most ofthesestill requirelconsiderable manual handling of the paperl rolls, are not sufficiently Versatile to meet allthewrapu yping,requirements oflthe industry, ortareso complicated as tobe impractical. i, i i

More specifically, the" following` typesY oir-apparatus have been suggested. There arethose Whichwapvlr abody Wrappewlone i the raver roll. '.For examplewsee.Patents.,Ljungstroem,

1,570,266; Gerlach, 2,368,213, and Bi-yang,

l 2,533,993. HThere `are thoseiwhichi-applyfj edge bandsv alone.- -See `for example, Power, Patent 1,926,049. "One apparatusjxis` adapted 'to apply both a body `wrapperfandedge bandsSee' for example-Jones `et-al., Patent 1,764,081, l But, the

wrapper `hasto be specially f iotched` at `,the edges and applied jto `the paper; roll b eforetuhe;` edgeA bands which are apphedover theupreviously applied wrapper;` Then the edges `of, thewrapper and `edge bands `arejwcrimped l or turned in i only d after they ,have been `wound ontheroll. `There is -one apparatus which `suggests theHaupplicationpi of the wrapper or simultaneousA turning in of the edges ofthe wrapper but no provision isgmade -forapplyins alle@` bands,

Seefor examplegVoith, abi-leaflet published by VJ M. Voith,Maschinenfa briken, Heidenheim (Brenz) ,t Wurtternbg `und St,Avi 45 Polten, Lower` Austria,` dated June, 1937.L;

Mororea most machines., 0f the typefrfnen- `tioknedncanonly-be used on a' roll ef a` singlefdiameter and of a single predetermined 'width.

vOne-machine does make provisionffor accommo-L dating rolls of varyingwwidths insofar `as turning Aor `crimping f theedges of; a g previously applied But,` this is doneatna differentristation from that at which the wrapper is-applied 2 Wound on tothe paper roll. For example, Bryans, Patent2,533,99 The present invention aims to `provide a fully automatic paper roll Wrapping machine designed toreduce manual handling of the rolls to a mini- A mum 'and to combine in a single machine and at a single station,` means lforapplying simultaneously both a body wrapper fand edge bands 1 and for simultaneously turning in the edges yof the body wrapper and edge bands. A preferred machine built according to the invention isoapable of wrapping paper rolls from 24 to 44`in diameter and from 18" to 84" inlength.` During the wrapping operation the edges of the'composite wrapping constituted by a body wrapper and edge bands at each end of the roll are folded over mechanically and the machine is adapted to wrap paper rolls in the usual Slayer manner as is common in this country or, alternatively, by a slight modification, can be used to wrap paper rolls in the European manner with any number Y of layers ofthin wrapping paper glued continuously to forma thick rigid covering. Accord- `ingly, the invention is embodied in anautomatic paper roll wrapping machine which includes Ain ,combination means for bringing together abody wrapper web and edge band webs to form a composite web, means for rolling the composite web as a Wrapper Aabout a paper roll, additional means whereby the wrapper is folded inat the ends;A as the" roll is being wrapped adhesive is applied to the wrapper, thewrapper is cut at the required length,` and the `finished roll ejectedA fromthe machine, all these `operations being performed automatically intime-related sequence'by means of timing means, `for example a cam-actuated control system.

t by gravity,

` `Breferably thepmachine includes a main supporting` frame that is preferably erected on` a rigid foundation inset in a'fioor having a slope towards ,and past thermachine so` that paper rolls are fed into and away from the machine Apen of drivingrouers extending thejwrdth `of the frame are mounted on lower extensions `of theframeso that their upper surfaces are substantially flush with the iioorleveland-,power meansare provided todrive theserolls at predetermined constant speed. A pairof crimping `heads'kare mounted in spaced-apart relationship i onone ,of the driving rolls and means, are provided whereby these crimping `heads can be autoand, enlyhaften:the Wrapper has :been completelyye matically moved towards `and .away from` each other so asto accommodate paper rollsof various lengths. It is a feature ofthe inventionthatthe ready to receiveanother roll.

mechanism for moving the crimping heads is outside the periphery of the driving roller on which the heads are mounted.

Suitable brackets are provided on the frame so as to rotatably support supply rolls of a wide wrapping paper web adapted to envelop a paper roll as well as spaced-apart supply rolls of relatively narrow pa-per edge band webs used at each end of the roll to reinforce the paper wrapping at the turned-in edges.

Paper feeding rollers are mounted in the frame and driven in conjunction with the driving rollers so as to rst draw the edge bands through an adhesive applying arrangement and bring them into juxtaposed relationship with the wrapping paper and then to feed the composite web 'so formed down the front of the machine towards the driving rollers and crimping heads.

The combined wrapping paper so fed passes through a guide passage in an adjustable apron or carriage extending 'across the frame and mounted on this apron are means for spraying adhesive on and se 'ering the combined vwrappers'at the required length. The adhesive spraying and paper cutting arrangement is actuated in time-related sequence with the driving rollsl and means are provided on the frame *whereby the apron can be automatically raised or lowfered to accommodate varying diameters of paper rolls.

All the movable parts of vthe'apparatus are arranged to operate in synchronism so that the relation of each operation to the other is always constant regardless of primary speed. The controls of the mechanisms allowing the machine tobeyadjusted for various lengths and diameters of rolls and the main speed changing transmission'control are mounted on one side of the machineso as to be readily accessible to an operator. The continuous operation of the whole machine requires an operator and a helper, the only ri'la'nual operation necessary'being the placing of 'the usual protective end discs on the rolls 'of l'paper to be Wrapped as they roll intothe driv- Ving rollers'oithe machine, also the replenishing 'ofwrapping paper rolls as required.

In'use, the roll of paper to be wrapped 'is allo'we'd to roll onto the driving rolls 'of the apparatus, the end'discs are placedin position and 'the machine starts automatically and the 'driving rollers revolve for the'length of time'necessary'to wrap for example 2% folds of wrapping paper-'and edge bands'around vthe'roll` of paper (American method). The number ofrev'oluti'ons ofthe driving rolls required for this operation fareproportionate to 'the diameter or-the roll to- "bewrapped and this Yis automatically controlled by a cam and clutch arrangement. As the'rollre- 'volves the edges of the wrapping paper-lare-auto.. 'matically folded in by the crimping heads, the i composite web made up of the body web and edge bandsbeing ed'to the roll 'at a-proportional speed.

At the completion of the wrapping operation the machine stops and a further cam arrangement activates the glue spraying apparatusto.

apply glue to the end of the third wrapping layer oi paper and then cut the wrapper Vat this point. The continued motion of the cams then restarts the driving rollers and the paper roll is rotated soas to complete the sealing of fthe wrapper. The machine is then automatically stopped and a cam-actuated'ejector mechanism ejects the finished roll from the driving rollers so that it rolls out off the machine'whichisthen Detailed description Having thus generally described the nature of the invention, particular reference will be made to the accompanying drawings, and in which:

Figure 1 is a diagrammatic view in perspective elevation of a preferred construction of an automatic paper roll wrapping machine in accordance with the invention.

Figure 2 is a front elevation of the construction shown in Figure 1.

Figure `3 is an enlarged detail view in plan and partially in section of a portion of the machine 'frame and gluer 'and cutter supporting apron to illustrate the driving arrangement for raising and lowering the apron more clearly.

Figure 4 is a top plan view of the construction shown in Figure 1.

Figure 5 isa sectional view in side elevation of Figure 2 along the line 5--5 to illustrate the machine construction in more detail.

Figure 6 is a detail view in front elevation of a portion of the machine construction to illustrate the relative position of the operating mechanism for the glue spraying and cutting apparatus with the actuating cylinder at the end of the down stroke.

Figure 7 is a plan View partially in section and corresponding in location to Figure '6 to illustrate the relative `positions of the end of 'the paper cutting blade'and actuating link, with the normal position shown in full lines, the cutting position being shown in dottedlines.

Figure 8 is a view of the construction of Figure l in side elevation with portions of the frame and housing shown in section to illustrate more clearly therelative positions -of the operating mechanisms.

Figure 9 is a detailed view corresponding in Alocation to Figure 8 showing the relative positions of the glue spraying'and cutting apparatus with the actuating cylinder midway inthe upstroke.

Figure 10 Ais a'plan view of the detail shown'in Figure 9 lto illustrate the arrangement more clearly.

Figure -11- is an enlarged detailv view partially in section-of a portion of the maindriving gears and transmission along the line I i--I l of Figure 4.

Figure 1-2 is adetailed-view corresponding in location -to Figures 8 and 9 showing the relative position of the Vglue'spraying and cutting arrangement with the actuating cylinder at the beginning of the downward stroke.

Figure 13 is an enlarged detail view partially in section of a portion of the frame and apron to illustrate in more detail the construction Vand relative position of the glue spraying and apron elevator mechanism.

Figure 14 is a detailed view partially in section substantially along the line M-li of Figure 8 to illustrate the cam driving mechanism, with'the cams shown in full lines.

Figure 15 is a diagrammatic detailed view of the cams with the valve actuating levers shown in dotted lines to illustrate their relative positions.

Figure 16 isan enlarged detailed View partially in section of the driving rollers and ejector mechanism, with the high positions shown in dotted lines to illustrate their functions' more clearly.

Figure 17 is-an enlarged detail Viewv inrear f .lassant elevation andpartially in `section of the right Ahand end .of a driving roller .and crimping .head

.illustrating `.the mounting .and .driving mechanism.

Figure 18 is an .enlarged :detailed view in plan and .partially in .section of a right hand A.end `of the `driving roller `and crimping head .to illustrate the construction and mounting of the crimping head Ain more detail.

Figure 19 lista sectional view-of ,Figure 17 along the 4line I9-L9 to illustrate the .construction more clearly.

Withparticular reference-to Figures l, 2, 5.and 8.0i the drawings which yare respectively `a y,dia-- grammatic .view in `perspective elevation, .a 'front u elevation, a ,completesectional lview in side .ele-

vation,and a sideelevation .impartial section of .the general arrangement of `the apparatus, a .main supporting :frame ID is constructed -so Aas to extend .vertically upwards :from va suitable l foundation I2.

Y l The foundation -I12.is=insetin.the floor IA ,of the building housing rthe machine :so :that Ythe `main r driving vmechanism :is positioned below :the

Alevel of .the iiioor zA which is Aconstructed so z `as `to .slope *towards tand beyond the .main

The -main-drivingirollers i6, i8, adaptedfto 3roftate the .paper rolls in .the `Wrapping operation,

i :are mounted on a lower 4 extension 'of :the frame 1AI 0 with #their `upper surfaces :substantially 4iiush twith .the .sloping filoor AJ This arrangement -:allows the :rolls Ato .be wrapped to rroll onto .the :driving .rollers I6, I8 and When wrapped 'and i rejectedytoaroll:awayifromthe machine toa suitzablefdiscfheadin'g machine. andheader press preferablyplaced -Iin linenwitlfieandI at the z rear of i the .iwrapping machine.

A supplyrollaofrpaper 2l) of alsuicientwidth -to wrap a `roll of newsprint B is rotatably smounted .onthe 4.upper portion of fthe machine "frame IIO. #Additional supply rollsmay also'lbe mounted .as 'indicated in` dotted lines. "The f end `oofthe rollrof thesupplyrrollpf wrappingzpaper l2is fedtthrough the'idlerfrolls 122,211 at which .i f

4point/there l.is adhesively `attached a `pair -of pa- `per-reinforcingredgeibands "2B which -are drawn from a pair of `spaced-apart supply vrolls A28 mounted forrotation on1-the-rearo'f1 the frame f I 0.

The reinforcing vpaper-edge bands 'U26 areiirst led "through a pasting arrangement 130 andare then; brought intocontact with the-lower1surface Vof*the#swarming-'paper'20 as it passes overthe idler'r0ll24.

The combined wrapping paper 20 and edge` bands ZSare'then fed through the feed rollers n in as shown in Figure 1.

The .apronlllI is mounted forislidableup and downivertical .movement `onatheirame I' and means are provided sorthatitioan be .automatiocally adjusted -tosuitvarious diameters ofrpaper rolls. The crimper headsl1 are 4also provided ff-.with automatic fadjusting 'means vso that y.they

can abe automatically set .to .suit paper rolls .of various lengths. r

With particular reference to Figures x2 .and 5, the apron 44 is constructed so as to constitute an adhesive-containing `'trough 45 and an arrangement of .adhesive sprayers 4.1 :are `niounted on the .outer .face so as toestond `across the Wddthoi the paper. .The adhesivesprayers 41..-are cam-actuated into spraying action in con bination Withfa paper-cutting blade JLB also mounted `on the apron 144 so that the edge of gthe .wrapping `paper below the apron .4.4 is sprayed withadhesive and severed .from lthe mai-n supply when the wrapping operation.isnearlycomnleted @his koperation .is performed in `time-relateol sequence :with the number ofirotations'of the drivingyrglls `roquirtd :to rotate .the paper roll. ;E r example, when the machine is used to wrap in the uman- .nerusual sin athis country, namely. .3 .ply wrap 0f :heavy kraft paper.. the paper f'B =roll :is rotated 22/3 .times :and .than 'the ndriuing -,rolls, als,o :the ,feed rollers, :are automatically stopped at :this :point 4Oncompletonrof this fcperatonthe .driving rolls :I ILS .are :again automatically started `andlthezpaper ro1lffB.is rotated further .tocam- :plete the wrapping, this `;rotation placing the .adhesively-.coatedledge of fthe 4wrappingrpaper .20

in'contact .with `.the outer layenof .wrapping paper and #so completing the seal. Eurther .rotationnf lthe `controlling cams of ythe :machine .place an .fej ectormechanism ."vrnounted between :therdriving rolls I6, I8,.into operationandrso the mished `roll is ejected `from fthe'fmachine -onto the floor A the slope of which ycauses fthe :finished .roll to ltravel out of `the vmachine towards 4the disc heading machine y.and :header I'press not .illustrated).

A1lthe -working elements yof :the -machine are `arranged to =be driven `in .synchronism `so that the relation of eachoperation to the otherisconstant regardless-ofprimary driving :speed 'The `main driving rollers fI, Ml lare driven at a constant 1 speed and Ya `speed `changing' transmission adapted to regulate Lthe relativespeedpi ythe controlling cams, with bthe adjustment of the moveableapron and-crimper heads-being actuatyed through separate Fmechanisms -controlled --through pushibutton controls and indicating dials so that the machine-canbeeasily-and quick- "ly lset `to'accommodate any diameter-and length ,of paper roll. l

lnforder that the-construction Vof the-apparatus` bemore clearlyunderstood we shallnow r-de scribe'thegvarious portions" in more detail.

M ain i frame The entire apparatus i is A .designed .so =that the i mainframe Illl canf-hefrst.` erected. on the :foun- -dation -I-2inits proper locationvin thefmill and as the various- WorkingA elements-of i themachine are constructed and assembled-they can be` ndi- Avidlfiallytested and then v mountedfonfor inl-the fframe.

The l'frame |10 comprises the .-whole machine rolls of paper. The floor A is sloped-towards 7 :..8 andpastithe machineas shown sothat the paper a? The owlfustable.l apron-1l '-ifw rolls B are gravity fed into and .away from the Thea'lrn 44 Spb-botti@ the adhesive Sprayers @PPa'mtuS' f -41 andthe paper cutting'blade48 issupported on a framework 62 which extends 4across the' machineandis mounted for vertical sliding movement-between a pairrof grooved guidefbars V64 -sfecuredto the frame at each side. (See4 Figure v Gluer and paper..- pull4 rollers 5 As `previously described, the wrapping paper v28 `is fedfromtlie supply roll around the idler roll `22 and over the idler roll 24 where it comes into contact with the edge bandsv26 after they are `1`-3fo'r'detail.)

The framework 62 and the apron 44 supported and a frame plate I3 separated by vertical-beams -|so that the exterior side ofthe frame |0 on which the controls are placed is free of-vmoving parts .which might prove dangerouseto4 an Aopv"passed through the gluing apparatus'30. 10 thereby are adjusted automatically to suit the t Thev supply rolls 0f paper 28 which are used various diameters of paper rolls by means of l-fCPI the edge bands are mOimted 0n a Shaft 25 the following arrangement. vA reversibleelectric land are maintained'in the desired spaced-apart motor 66 is mounted substantially centrally of relationship by means ofI sleeves |30 placed over the framework B2 and is adapted to drive a, pair the shaft. The sleeves |30 are preferably in short 15 of elongated shafts 68 which extend from each lengths so that the rolls 28 can beset at any `side of the motorA toar pair of gear housings 10. :desired positionv to suit varying widths of papel' The gear housings 10 are secured to the framerolls being wrapped. work 62 atv each side and each includes axed The gluing apparatus 38 is constructed as beouter casing 12 (Figure 13) and a rotatable inner ing'a separate assembly that is mounted on fourv 20 sleeve 14 mounted -in bearings 16. A gear 18 pads to the frame I0 so that it can be slid into secured to the end of each of the shafts 68 is place and removed from the machine as a unit. meshed with a gear 80 surrounding each of the yEnd plates |32 are joined by an adhesive-wninner sleeves 14 so that rotation' of the shafts taining trough |33, preferably by having angle 68 in either direction also rotates the inner plates welded to the end plates |32 and having `25 sleeves 14. As theinnerI sleeves 14 'each fit over the ends of the trough welded to the angle plates. and are threadably engaged with a pair of lead Idler rollers |34, |35, |36, |31 are journalled in screws 82, one of which is xedly mounted at the end plates |32 so as to guide the end bands each side of the frame l0, the rotation of the around and over a glue applying roller |38 also inner sleeves 14 causes the framework 62 to ljournalled between the end plates |32. The glue 30 move vertically up or down' between the guide `applying roller |38 is driven by frictional conbars 64. The controlling switch 84 for the re- Vtact with a main glue roller |40 which is jourversible motor is mounted on the panel 86 senalled in the end plates |32 on a shaft |42. The cured to the framel I0 anda suitable `dial inshaft |42 extends beyon'dthe 'end platess|32yand vdicator 88 (Figure 1) `is mounted over this switch ak bevel gear |44mounted on this shaft end is 35 and is actuated 'from one of the shafts 68 so placed in meshed engagement with a bevel gear that the relative position of the framework 62 |46. The bevel gear |46 is xedly mounted on and the apron 44 is shown as the switch 84 is .a shaft |48 journalled between the bearings |50, being operated. It is contemplated in this re- |52 positioned` inr spaced-apart relationship on spect that the drive to theindicator 88 would the frame I0. The shaft |48 is driven through l0 comprise the usual flexible cable `drive and a bevel gear |54 which isin meshed engagement that the indicator dial would be calibrated to .with a bevel gear |56 mounted on a second shaft show the relative positions necessary to accom- |58v extending vertically upwards from the mamodate various diameters of paper rolls. ,chine main drive. The upper `end of the shaft The apron 44 is constructed so as to provide an |58 ris `journalled in a bearing |80 mounted on 45 internal adhesive containing tank 45 and the adthe frame |0, the lower end being journalled t0 hesive spraying units 41 are mounted below this ,the Aframe |0 below the floor level and being tank portion withsuitable connections to the 4driven through a bevel gear |62 from an eX- interior of the tank for the adhesive and further tension of the main drive. Y connections 92 to an air supply conduit 83 con- A; bevel gear |64 is xedly `mounted. on the 50 trolled through a cam-operated airvalve arupper end of the shaft |48 and is. in meshed rangement 94 actuated by an air cylinder 96. engagementwith a bevel gear |66 secured to the The air cylinder 96 is-also adapted to actuate the end ofa shaft |68 mounting the lower of the paper cutting blade 48 which is mounted for paper. pullingr or feed rollers 40. A toothed gear slidable movement beneath the apron 44 so that |12 is mounted on the shaft |68 behind the bevel 55 itpasses a shearing edge 48 secured beneath the gear |64 and is inmeshed engagement with a framework 82 and so severs the paper across the further toothed gear |14 mounted on the end width of the machine. The cutting blade 48 inof..a.shaft |16 supporting the upper roller 40 cludes obliquely-disposed elongated slots 98 advvhich is adjustable for varied thicknesses of paper Yjacent each end and'bolts |88 pass through these ;s0 that the feed rollers 40 are driven in counter.- 60 slots to support the blade under the apron 44. rotative movement by the shaft |48. One end ofthe blade 48 is'connected by means .T he Lvarious gears driving the feed rollers 40 of a pivotal link |82 to one arm |03 of Va bellcrank and themain glue roller |40 are designed to- |05 pivotally mounted to the apron framework 62, gether with the respective diameters of the` rollers as shownin detail in Figures 7 and 8, while the sothatthe wrapping paper and edge-bands areg other end is connected tor a spring |04 attached ,fed through the machine in synchronism with to the opposite side of the apron framework 62. y `the speed ofthe main driving rollers i5 and |8. With this arrangement raising of the other arm .With yparticular reference to Figure l-,ofqthe |08 of the bellcrank |85 is adapted -to pull the drawings, the shafts |48'y |58, and theirfrespecblade 48 inwards in an oblique movement against .tive gears are, housed 'between a frame plate the shearing edge 49 and release of the bellcrank arm i 86 allows the spring |04 to return the blade 48 to its original position.

The actuation of the air cylinder 96 is con- 4 trolled by a valve system operated in cam-controlled sequence with the driving rollers of the machine. This portion of the apparatus will be i described in more detail later.

The movement of the air cylinder 96 is transmitted to operate the valve arrangement 94 and the bellcrank |05 through a, shaft |08 extending from the `piston of the cylinder 95. This shaft |08 is mounted so as to extend vertically upwards from the cylinder 90 with the upper end supported for slidable movement in a bearing I| l mounted on the frame 02. A pair of cam carrying blocks II2, I I4 are iixedly mounted on` the shaft |08 above and below the bearing I|0. A spring-biased cam finger l5 is pivotally mounted on the block I I2 and a further spring biased cam nger I8 is pivotally mounted on the cam block The air valve arrangement 94 includes a pivotally mounted cam block |20 having an outwardly-extending arm |22 that is adapted to be contacted by the cam finger I I0 on the downward movement of the shaft |08. The depression of the arm |22 pivots the cam block |20 so that the cam surface I 2| rocks against the spring controlled valve |24.

`Theopening of the valve |24 allows air under pressure to pass through the conduit 93 and 'so cause the adhesive sprayers 41 to spray a stream of adhesive across the edge of the wrapping paper directly below the apron 44. The continued downward movement of the shaft |08 allows the cam finger I I6 to pass the end of the cam. arm |22 and the cam block |20 is resiliently returned `to its original position `closing the valve |24.

'Ihe pivotal mounting of the cam finger I I8 allows it to pass the end of the bellcrank arm |09 without actuation as the shaft |08 descends but as the shaft |03'moves upward on the return stroke the bellcrank arm |05 is engaged `pivoting the bellcrank |05 so as to actuate the cutting blade 49 into shearing action.

As the cam finger |16 again contacts the cam block arm |22 on the upward stroke the pivotal mounting allows it to swing past the arm where itis returned to operative position by a suitable spring. The operation of this portion of the apparatus is shown in detail in Figures 12, 6 and 9.

FigurelZ shows the shaftv |08 at the toptofV the i stroke before the cam fingers I I6, l0 have come into operation. Figure 6 illustrates the shaft |09 at the bottom of the downward stroke, `the cam iingenll having completed its operation, the cam. block |20 having returned to `normal `position. Figure 9 illustrates the shaft |08 near the completion of the return upward stroke, the cam ngerI I I8 is in contact with the arm |06 of the bellcrank |05 actuating the cutting blade 48 while the cam finger IIB is just :passing the cam block arm |22 without actuation.

` Mam4 driving rollers and c'rimpers apart relationship to the beam |90 at each sideof the frame I0.

:Onelend of the roll shaft IBI extends beyond i theA bearing |82 `iournalling the roller I9 and 'a toothed gear I 88 is xedly mounted on the shaft end. A corresponding toothed gear |88 is nxedly mounted on one end of the roll shaft |83 that extends beyond the bearing I84journalling the'` roller j|8. y `Astub shaft |90 is journalled between that rotation of the shaft` and the gear |94 in a clockwise direction causes the rollers I0, I8

to rotate simultaneously in a .counter-clockwise direction. i

The `stub shaft lao is driven through a. bevei gear |92 mounted for free rotation on the shaft between the friction discs of a clutch |95 also mounted. on the shaft and actuated through a cam-controlled clutch lever |96. The bevel gear |92 is `in mesh with a bevel gear |90 secured to f theend of themain driving shaft 200 so that the bevel gear |92 is in constant rotation while the machine is in operation but only rotates the shaft |90 when the clutch |95l is operated.` i g `This clutch-controlledrotation of the driving rollers I 6, |8, is also transmitted to the driving f mechanism of the feed rollers 40 and the glue rol1er|40 by means of a toothed gear 350 inf mesh with the gear |94 and journalled on a stub shaft 352. A` bevel gear 354 is xedly mounted onthe other end of the stub shaft 3.52

and is in meshedengagement with a bevel gear.`

350 secured to 'a shaft 358which extends hori- Zontally rearwardly toadjacent the bevel gear |62 secured to the vertical shaft |58;A Abevel gear 390 fixed to the end of the shaft 358 is inA meshed engagement'with the bevel gear A|62 so that rotationof the gear I 94 is transmitted to` paper feed the vertical shaft |58 to drive the rollers and glue roller.

`The crimper heads 46 are mounted in spaced.- apart relationship directly on the rear roller I8 sothat they arerotated at the same speed and `in the same direction. Each `crirnper head45 comprises alcentral sleeve or bush 202 which is a i slide fit over the roller I8 and is keyed forrota-` tion therewith inelongated key slots I9 which extend the length of the roller |8. This mounting (see Figures 18 and 19) allows the central` sleeve 202v and the crimper head to be moved axially along the roller I8 as is required to sui paper rolls `of varying lengths.

The central sleeveA 202 of each of the crimper head assemblies 46 slidably tswithin an annular ybearing support 203 which includes extensions 204, 206 Hwhich are adapted to respectively guideanvd move the crimper head assembly axially of the roller I8.. i

The sleeves 202 are provided with `annular grooves 208adapted to receive a flanged annular plate 2|0 on which four crimperhead sections 2| I are secured in regular spaced-apart relationship by` suitable bolts. A bearing ring 2|2ff1t`s over4 the sleeve 202 `to retain the angedplate l0 in position and springs 2 I4 mounted on `pins 2I6 extendingfrom `the fiange of the plate 2|0 are adapted to bear against the ring 2|2 whichis securedto the inner sleeve `202 by set screws 2I3, the entire assembly being drawn against q the bearing ring 203 by` the engagement of a threaded retaining ring 2| 4 with the threaded 2 end of the sleeve 202. Suitable races and bearings areprovidedbetween the opposed faces of the ring 2|2 and the bearing support 203 and theretaining ring 2 I4 is locked in position by `set screws `205. Crimper head guide shafts 220 are mounted behind and parallel with the roller `I8 so as `to extend from each side of the frame I0 l toa crimper drive-supporting frame 222 mounted 1 on the base of the frame lil substantially centrally of the machine.

The extensions 284 of the bearing support are provided with bearing sleeves 225 which slidably nt on the guide shafts 220 at each side of the frame Il. The extensions 206 are provided with threaded bearing sleeves 224 which are threadably engaged at each side of the frame with one end of a double threaded screw shaft 226 extending across and being journalled in the frame 222 above the guide shafts 220. The screw shaft 226 is journalled centrally in a casing' 22S mounted on the top of the supporting frame 222 and is driven through a worm and gear arrangement 230 connected directly to an electric motor 232 mounted on the supporting frame 222. The motor 232 is connected to and controlled by a two-button switch 234 mounted on the control panel 86 and a suitable dial indicator 236 is actuated from the shaft 226, so as to indicate the relative position of the crimper heads 46 as the switch 234 is operated. While the drive connection to the indicator 235 is not illustrated it will be understood that any of the usual flexible drive connections could be employed and that the dial of the indicator is calibrated to show the relative positions of the crimper heads in terms of approximate length of paper rolls.

With this arrangement the actuation of the motor 232 which is of the reversible type, in either direction, rotates the screw shaft 226 moving the bearing sleeves 224 and the bearing 'supports 203 towards and away from each other causing the sleeves 202 and the crimper heads 46 supported thereby to move in or out as required to suit the various lengths of rolls.

The crimper head sections Ill are all of similar formation and are arranged so that as the crimper heads are rotated with the drive roller I8 the portions of the wrapping 20 and the edge bands 26 extending beyond the ends of the roll of paper being wrapped are pushed in and folded against the ends of the roll in succession by 'each crimper head section lll. A's the wrapping cone tinues and the folded ends of the wrapping build up in thickness the resilient mounting of the flanged crimper assembly plates 2|0 allow the crimping heads 46 to retract and thus avoid tearing of the end wrappings.

The ejector mechanism The ejector` mechanism 5t and the drive 'for the crimper heads 46 are preferably assembled as a unit and pre-tested before assembled in the machine. The operative portion ofthe ejector mechanism is mounted on a support frame 24B erected on a base plate 242 extending from the fratrie lll. y

The ejector support frame 240 is positioned beneath the top surface and centrally of the driving rollers 16, YIB and consists of a base 246; a front plate 228 which extends upwards from the base adjacent the front driving roller l5 and at each side of the front plate 248 are side reinforcing plates 250. V

The front plate 248 is constructed so as to include a centrally-disposed guide slot 252 with the sides of the slot tapered outwardly so as to retain a slide plate 21.34 for sliding movement; 'One of the tapered sides of the guide slot 252 is constru'cted 'as a separate bar that is secured in place to the front plate 248 by suitable bolts so that it may be removed for installation of the slide plate 254 when the support 24E] is in erected position. The slide plate 254 is constructed so as to have tapering edges corresponding to the guiding grooves of the front plate 242 with the lower portion projecting outwards and journalling a bolt 258.

The bolt 253 passes through an elongated bearing opening 259 in one arm of a bellcrank 250 pivotally mounted between the support side plates 2553 so as to provide a loose pivotal connection therebetween (see detail of Figure 16). The up= per portion of the slide plate 255i terminates in a pair of spaced-apart bearing portions 222 on which the ejector rollers 254 are mounted for' rotation.

An extension 255 of the slide plate 254 includes a cylindrical tapped sleeve 25S in which is threadably engaged a plug 21B. The plug 210 includes a central opening 21E through which the lower end of a shaft 212 is adapted to slidably pass. The opening 21E is larger than the diameter of the shaft 212 and the upper surface of the' plug 210 is counterbored axially of the opening so as to provide a hemispherical seat. A spring seat 214 having' a heinispherical end is slidably mounted over the shaft 212 and registers in the herni-y spherical seat of the plug with a compression spring 215 slidably mounted over the shaft 212 bearing against the spring seat 214 and a roller support assembly 218 xedly mounted on the upper end of shaft 212.

The roller support 218 is constructed so as to have a pair of spaced-apart lower bearings 219 to which a pair of spaced-apart bearing portions 28u are pivotally mounted by a shaft 28|. The bearing portions 28!) are adapted to rotatably support the ejector rollers 262 which correspond to and are in alignment with the ejector rollers 264. The two sets of ejector rollers 264 and 282 are pivotally connected to each other by means of link plates 284 extending along each side of and connected to the outer ends of each roller and to a central bearing support 225.

The bellcrank 2550 is mounted for pivotal movement on 'a shaft 236i journalled lbetween bearing blocks 228 secured to the support side plates 25|! with the bellcrank arm remote from the slide plate 254 pivotally connected to the shaft 290 of an air cylinder 292. The air cylinder 292 is mounted for restricted pivotal motion on the frame 222 supporting the crimper motoia and drive. This cylinder 292 is actuated by a camcontrolled air valve arrangement which will be described in detail later Vso that the ejector mechanism 50 is automatically operated at the end of the wrapping operation.

In operation, the ejector mechanism 50 raises the roll of newsprint B from between the driving rollers I6, I8, rolls the roll B onto thc rear driving roller I8 and applies the necessary impetus on kick to start the roll B along the slope of the floor A With particular reference to Figure 16 of the drawings which illustrates the operation diagrammatically, the forward motion of the shaft 295) of the cylinder 292 pivots the bellcrank 26D to the position shown in dotted lines. This motion is transferred through the slide plate 254 to the ejector rollers 264, 282, so that the roll B is lifted. As the weight of the roll B is transferred to the ejector rollers, the rear lset of rollers 282 are depressed so that the roll B is pushed. from one side and thus rolled onto the driving roller I3. The pivotal connections between the `tvvo sets of rollers 264, 282 and the rear set of rollers 222 and the bearing portions 280 allow the rollers 282 to descend compressing the spring 21i and sliding the shaft 212 Main drive und camz-operated` controls The motive power for the driving rollers I6, I8 and the controlling cams of the machine isprovided by an electric motor 300 mounted on a support 302 extending from the base of the machine.

The motor 300 is coupled directly tothemain i driving shaft 200 so that the driving rollers, I6, I8 are driven at a constant speed when the clutch |95 is engaged. The driving shaft 20|! is mounted for rotation between a journal bearing 304 and a gear housing 306- `projecting from the top of a transmission housing frame 308. A spur gear 3|0 is fixedly mounted on the shaft 200 within the housing 306 and is in-meshed engagement with a main driving gear 3|2"of a four speed transmission housed within the frame 308.

The four speed transmission includes a lower set of`driven gears 3|5, 3I6, 3I1, 3|8 that are fixed to a shaft 320 journalled in the frame 308. The shaft 320 is driven by the engagement of the gear 3| 8 with a gear 322 journalled in the end of the frame 308. The gear 322 is connected directly to the main driving gear 3|2y and includes acentrally disposed opening 323 adapted to support oneend of a 4shaft 324 for free rotation.

The shaft 324is positioned directly above and in parallel alignmentwith the shaft 320 and suitable gears, `325, `326, 321,328, are keyed tothis` shaft so as to `be movable `axially of the shaft While being rotated. The end gear 328 is adapted tomesh with an internal gear 329 cutin the gear 322 in `an enlargement of the opening `323. The gears" 325y 326, are combined and are `shifted through a lever arm 330 operated exteriorly of the housing frame 308 by a connecting lever arm 332;` The gears 321, l328 are also combined and are shifted through a lever arm 334 operated `exlteriorly of the housing through "a connecting lever arm 336. The connecting lever arms 330; 3 32 are mounted in spaced-apart relationship so as toextend directlybeneath agearshift control arm 338to which they are operatively connected. lThe gear shift control arm`338 extends upwardly from the driving mechanism to` aA gear shift control box 340 mounted on the frame I directly below the controlpanel861A l The end of the shaft 324 remote from the driving gears passes through abearing in an interior wall `ofthe transmission frame 368 and is journalled between the interior wall and an exterior wall. A Worm 342 is fixed to the shaft 324 at thisA point and is in meshed engagement with `a Wormgear 344; The worm gear344 is secured to a stub shaft 345 journalled between the side plates l346, 341 of the transmission frame 308, and a toothed gear 350 xedly mounted on` the other end of the shaft 345 `is in` meshed. engagement with a toothed gear 352.` The `gear-352 is secured to a stub shaft 354 journalled between the transmission frame plate 3,41 vand an interior partition 349 and `isadapted to' drive the Ishaft on which is` mounted the main controlling cams 360,362. i i o l The cams-3||i,` 362 are mounted inlsuperimposed relationship andare secured-to the shaft 354 `so that ltheyare rot-ated together.` The cam 360 is adapted to control thefengagement `and I`diseng-agement of the clutch lever |96 in time-related i sequence with the number of revolutions made by the drivingrollersl, I8. i i Y As the clutch is normally maintained` in operative position bya spring 364 mounted over the shaft, the cam 360 is adapted to disengage the i clutch at spaced-apart intervals by means of a camileve'r 366 pivotally mountedfat one end and on which is rotatably mounted a cam-engaging 'roller 368.

The other end of the` lever arm 366 is pivotally connected to a connecting arm 369 which in turn is pivotally connected to the pivotally mounted clutch lever |96.

With this arrangement, depression of the lever 366 is adapted to 'release the clutch |95 so that the bevel gear I 92 Irotates freely on the shaft |90 and the driving rollers I 6, I8 do not rotate.`

As this stopping action must take place in relationship to the overall function of the machine the cam 360 includes a first clutch operating `projection 310 which `contacts `the lever 366 at thecompletion of the first iwrapping opera# tion,- or in the present instance after thel driving rollersfl, |8haverevo1ved sufciently to rotate the-.roll of.1paperl B 22/3 times.

allows the clutch |95 to` reengage so as `to allow the rollers I6,` I8 to complete the wrapping operation and following the depression 31| a` clutch operating projection 312 which again disengages theiclutch removing the `drive from the rollers.`

tionvv-ith` the cam 360 includes a cam surface having` a rst'pro'jection 38|)` adapted to actuate thev gluing and paper cutting'mechanism atthe same timeftheprojection 310st`opstherollers, |6,-|8,

-Thevalve control box 394 contains suitable: trip valves 395, 396 which `are adapted to open@ orV close air pressure supply lines from a compressor tank, not illustrated, to the air cylinders 96, 292, controlling the adhesive spraying yand paper cutting mechanisms and the ejector mechanism respectively.` "`f The shaft sszcarri'es a erst trip lever l398 which" is adapted to contact the Ytrip valve 396 at the `first outward movement of the shaft as actuated through thecam portion 380 `of the cam 362.` In thenormal position of thevalve 396, an air presl sure linetoV the air cylinder 96 is open `causing the shaft |68 to stayin thev up position.V The i outward movement of the' shaft 392 urges the trip valve 3,946 l,to an operative `position closing `the first air line andopening another `to the upper portionl of` this air cylinder` 96 so that the `shaft |08 moves downward andactuates the `glue spraying arrangement 41. The further outward'movement of the shaft 392 urges .the `trip lever 398 beyond the valvetrip lever allowing the valve 3.96` `to return `to `its normal position closingtthe` second airline and re-opening the iirst air line tothe cylinder 96 causing `the shaft `|08 toaga'in..

The surface of the cam 360 also includes a depression 31| which" essaies.

is move upwards and actuate the paper cutting. blade' 48.

As the shaft 392 is moved still further by the actuation of' the cam portion 382 of the cam 362, a second trip lever 6100 contacts the tripi valve 395 and opens an air pressure line to the cylinder 232 controlling the ejector mechanism 50. With the release of the actuating portions of the cam 362 asA the combined cams complete the operating cycle, the shaft 392 is allowed to return, the initial movement releasing the trip valve 3 35 soy as to close one air line and open another to the air cylinder 232 to return the ejector mechanism 5l!` to its normal position.

As the trip lever 398 is pivotally connected to the end of the' shaft 392, the continued backward movement tilts the lever 398- -about the trip valve 396 after which it is returned to operative position by means of a suitable spring.

This cam control arrangement allows the gluer, paper cutting blade, driving rollers and ejector mechanism of the machine to automatically operate in synchronism. The adjustment of the transmission through the control lever arm 338 automatically changes the rate of speed of the cams 368, 352 proportionately to the number of revolutions required by the driving rollers IB, I8 to rotate a paper roll of determined diameter three-times for the complete wrapping.

While the foregoing description refers specifically to the method of wrapping usually employed in this country, namely, the American method involving three layers of heavy kraft paper, it will be readily understood that by changing the operating contour of the controlling cams that the number of wraps, or folds could be increased to suit the European method of 9 to 15 layers of thin wrapping paper.

As the driving rollers i6, I8 are driven at a constant speed, the variation in the speed of rotation of the cams 360, 362 allows the various working elements to function in synchronism proportionately to the number of revolutions of the driving rollers.

It is contemplated in this respect that the upper portion of the housing for the control lever arm 338 would include guiding slots graduated for various diameters of paper rolls in relationship to the various gears of the transmission.

While the preceding description describes the cylinders 96 and 292 as being air operated, it is also contemplated tha-t the mechanism could be operated in a similar manner by hydraulic pressure.

We claim:

1. A roll wrapping machine, comprising in combination, supporting rollers for supporting and rotating a roll for wrapping, means for rotating said. supporting rollers, means for supporting a supply of a body wrapping web, means for supporting supplies of reinforcing edge bands, primary adhesive applying means for applying adhesive to the inside of the edge bands, respective means for guiding the edge bands carrying adhesive and the body wrapping web from said supplies into juxtaposed relationship one band at each side of the web to form a composite web reinforced at the side margins, means for feeding the composite web so formed, means for retaining and guiding the composite web in a path towards the supporting rollers, secondary adhesive applying means associated with said guiding means for applying adhesive across the composite web and severing means associated with said guiding means for severing the composite web, timing means, control means: tor start;-

ing' and stopping the supporting' rollers respon:-

sive tothe timing means, control means for the primary adhesive applying means responsive to the timing means', control means for the secondary` adhesive applying means responsive to the timing means, and control means for the severing means responsive to the timing means, crimping means connected to one of said supporting rol-1ers, the rotation of said supporting rollers causing simultaneous winding of the composite web onto` the roll and folding in of the edges of the composite web against the end of the roll by said crimping means.

2. A roll wrapping machine, according to claim 1, in which the timing means includes a cam having elements adapted to cause sequential actuation respectively of the roll-supporting rollers,.`

of the primary adhesive applying means, of the secondary adhesive applying. means, and of the severing means.

3. A roll wrapping machine, according to claim 1, in which there is a frame, a vertically movable carriage on the frame carrying the secondary adhesive applying means and the severing means, and said carriage carries driving means operatively co-nnected with. the frame thereby to raise and lower the carriage independently of the main drive of the mechanism including a prime mover mounted on the carriage to actuate said driving means.

4. A roll wrapping machine, according to claim l, in which the crimping means includes a pair of spaced apart crimping heads on said one of the supporting rollers and adjusting means outside the periphery of said one roller for moving K said crimping heads axiallyY of the roller in either direction, and driving means for actuating saidA height adjusting means whereby the machine may be adjusted for rolls of various diameters.

6. A roll wrapping machine, according to claim 1, which includes a carriage mounted for vertical adjustment between the means for feeding the composite web and the supporting rollers, said means for retaining and guiding'-the composite web is contained on said carriage, said secondary adhesive applying means and said severing means I. are mounted on said carriage, height adjusting means for moving said carriage up and down, driving mechanism adapted to actuate said height adjusting means whereby the machine may be adjusted for rolls of various diameters, said crimping means including a pair of spaced apart crimping heads on said one of the supporting rollers and adjusting means outside the periphery of said one roller for moving said crimping heads axially of the roller in either direction, and driving means for actuating said adjusting means, whereby Ithe machine may be adjusted to handle paper rolls of various widths.

7. A roll wrapping machine, according to claim l, in which the supporting rollers have xed axes and there is ejecting means between said.,

i 1,1"whcn'includes Y meanings-:mounted t cal adjuetments.ibetweenithei@means forirfieeding i Athecomposite web-'andthensopportingrrollers;said i means':for retainingaan guidingiithezcmnposite webuis'contained on said:V earriaga.v v

adhesive applyingmeans andlsaid entering; meansilr, are' mountedL-'onsaidfgcaimiag i means Aforffmovingrsaid'jcarriagedelman down, driving mechanismadaptedtoactuatesaid means adaptdlsto react i also actuates `said ,seyerngfemeans y assesses rollers fkelo'wfthelnormatly erklediposition Aefiithe l -:rellibeingtWrapped, said: eietingi-means=having a. positivev `pressur liftingwm-emberndapted taact J onwsaid' i rollito Ii-fy s itwoi onemf :jsaidiirol'liersyxand abouttheperi'pliery-Ioftthaxitlrer until itureaches Ys.' 1 the.` `crest Ithereofigand resilient? pr `ssineameans i adaptedfto react .againstthexolierrso .las Ltpush it foilfsaid forest.

8s A roll:wrappingma'eliine,` accordingiio claim adjusting means@Wherebylthemachineamaynbe Acriirming means including e; pai oifspaeediapart criI-nping` #heads on isaictioneefofi* hefsupporti'ng f rollersl and adjustingimeansfontsideftheperiphery `oi" said one rollerhfor moving:sai'di-.crimpinguheads i axially on theroller'in:eitherirecton,n.anddriverl 2 i ing `rneansitforf..actuatingl `sai-daadji1s tingarneans,

whereby/f themachinerrnayvbeadjusteduto handle er r'ollsfffof various-widths, saidzsupporting rollers having 4ifixed axearejeeting means zbetween said rollers i belowritneonormallyaeradledpositions 30=-- i of the rollwbeingwrapped having alpositivapressure toractlon said-roll torliftvit lioneotjsaid rollers aid.f ejzectingxmeans ngameinb'er adapted and 4about y the peripheryy fthe father:.untilv it reaches'` the ccresttheneo 9.` A roll wrapping-machine according :toclaim 1 rin@ which 'said 1 secondaryaadl'iesive .-appl-ying 4means h includes actuating fsmeans, L vthecontrol 5; 40

wcomposite -webiagainst `theside of the roll, ap-

means for the secondary adhesive applyingimeans and said severinggmeansfin'cludes a? cylinder and a pistonn-operablenin nsad. cylinderff saidspiston having a rod extending beyondfsaidgzcylidergand .meanson-saidrodlifor startingandstopping-saidV r, y i f f, `45 i secondary-adhesiveapplymg meansyfsad rodialso carrying meansfon actuating gsaidfseveringrmeans, whereby movement: or thegpjiston causesfstopping and startingnf-the adhesive applying meansvand 10. A roll Wrappingtinacliinewcoinpifisingin combinations,usupportingtA rollers: riore supporting and rotatingsraroitL-:forv/vwrapping, -Kmeans for-'arow tating. .isaidsl supporting e rollersffz meansgion supporting, ansupply-ofaai body@wrappingiwebimeane for supporting suppliesof` reinforcing: edge-bands; primary; l adhesive .L applying zmeansv-.forsapplying adhesive to the.. inside ofthe :edgeA bandsgr-resp-ec tive meansiforA guidingithe-edge bands .carrying i .adhesive; andithe body. wrapp-ingflwwleldlfromwsaidfmo.

supplies inter juxtaposed-:2 relationship"one;` band of guide rollersha'vingr:gfixedaxesrendi-arranged above risaid'. supportingrfrollerstand between-.said guide:Y rollers ande-said ,supponting rollers-lamernd;` resilient; pressuremf; Y

i ,a paper Irol-l Vto be Wrapped and pressing the adherwsive carrying leading ledgerA against the paper -rollprotating saidwpaper roll whereby said corn- Y .-positewebis wound aboutitrand at the same time nd? downamovement: 4of said` carriage independi'ertlyio-fitheidrive of saidfsupporting rollers, `said f adhesiveapplyingpzmeansland saidlsevering-means jeingI mountedzfonsaid carriage yLilli-111A rollwrwrapping machina accordingto claim f IOfin'l which fsaidi guiding i means `for .causing movementioffthe y carriagev includes a `vertically`extendingutlfireaded1fv shaft andi bushing averti-:1; nr

anslonsajid carriage for fthreadably..engaging he shaft,'and -means nforcausing :relative rota- 14tion' between .theibushingmeans landsaid shaft Kto-cause 'tlieflupg-'fandk downffmovement of fthe ffoarriage.

2&12gA" roltwrappingi'machine; according to .fclaim 10,5 Ato whichthe -rmeans for rotating said i supportingroIlersfincludes aV gear `looxfandadjustine; *meansllforirthe gear -box "whereby the f numbenlofrevolutions which `the supporting rolls adjusted for ."rolls@.ofiilyariousff'diameters, achgumakeuin" eachlcyclefmay -be adjust/colin relation f to-`.t11e-:'diameter...ofithe` rolly to be Wrapped and .thel vertical position of` said carriage.

I; 135A meth0d ofen/rapping a lroll of paperv of `furthe `tonnage 'variety which -comprisesf time `steps foffi-drawing'rirom a supply atpairof edge bands of constantwvvridtkrandl applying adhesive to said lsledgewbands, at'thersametime drawing from sup- Iply a wrappinghweboffconstantwidtn and bring- ..ring-Ithe .adhesive-carrying edge' bands andV Web intosjuxtapositiontofform a 'straightdged composite. -vveb`A 'of l substantially constant width` and 4chewing marginalportions reinforcedbytne edge j bands i yeachl.'bordered i by .a --continuous straight Y edgerwapplyinge adhesive; -to'4 thev leading edgey of the eompositewweb, -ifeedinglsaid ycomposite web to continuously folding-in marginal portions of said plying adhesive to an area of the paperweb the adhesivev has- 4--loeen i applied; and l-continuing toizrotategthe roll until fthe portion carrying lthe La,adhesivefcmnesfintoV contact with an Varea of if; hescomposite welo-` alreadyjuxtaposed to the aper roll. andadheres thereto.

Ai 1`15.fA` rolle/rapping machine, comprising', a pair of spaced apart supporting rollers adapted to :supportwemd1v rotatev a'-i"0ll :for wrapping, a crimp- :ingo-'mechanism having a `pair ofispacedl apart "crimpingtheadsneach of-Which `includes an inner sleeve mounted on-one? o-:f said supporting rollers, esaid'Ssleeve `loeing -iconnected `tothe roller tobe `.rotatedilthereloy` but movable axially-therealong,

an.; outerffsleevemounted uon 'said inner sleeve,

.meansforsprcventing:rotation of said outer sleeve awhile-said inner sleeve'rotates relative thereof, adjusting meansffor movingfrthe'outer sleeve axiaally :ofesaid one roller-vvliereloy the crimping heads:mayi beimovedaxially-of said oneroller'in .eithervdirection tof -place` them toy accommodate -f rolls of-va'rious Widthsfsaid adjusting 1 means l inecludingf,a'lead-screwfone side-of which haseJ right u ahandtthreadzand 'theidther side -of Which-has nagearranged'rforiup-rand down movement, andia75waieft handthread, said-lead screw being outside said other roller.;

-the periphery of said one roller, a pair of threaded another portion engaging one of the crimping heads, means for rotating the lead screw ineither direction to adjust crimping heads inward or outward for different sized rolls, and means for rotating the supporting rollers.

16. An apparatus according to claim 15, including a frame having spaced apart supporting members, said supporting members being journalled in said supporting frame, said lead screw also being journalled in said supporting members, wherein said means for rotating the lead screw includes a worm gear on said lead screw intermediate the ends thereof, a worm drivably engaging said worm gear, and power means for rotating the worm in either direction.

17. A roll wrapping machine, comprising in combination, a pair of horizontally disposed axially parallel supporting rollers for supporting and rotating a roll to-be wrapped, means for driving said rollers thereby to rotate said roll,

an ejecting mechanism located between said when it moves through said upward path it is urged upward against said roll at a point on said roll removed from the rolls vertical centerline `whereby the roll is gradually moved upwards on the periphery toward the crest of one of the supporting driving rollers, and means acting on said second ejector member effective only when the `roll reaches `said crest to push the roll off 'the crest. v f

i8. A roll wrapping machine, according' to claim Y V1,7., ,wherein control means responsive to the stoppingV of said supporting rollers is adapted lto ini- `V, tiatetlie action `of said ejecting mechanism.;

O19. Arollwrapping machine, comprising, a pair of `axially parallel spaced apar-tY drivenrollers having iiiced axes for supporting a roll Ato be wrapped ,with the-roll norms/illyresting4 equally v onv each olf-said; driven rollers, meansffor acting on the yunder surface of said roll nearoneof said yrollers inV anupward direction to ,move the roll upwards on ,theiperiphery of thekother driven roller'tolneaiitsscrest, and means-becoming efvfective only when said roll is near the crest of said otherroller to boost the roll over the crest of 20. A roll 'wrapping machine, comprising in combination, a pair of driven supporting rollers l on respective peripheral regions on said supporting rollers, means for ejecting said rollrfrom said driven rollers including a rst ejecting member for acting on Ythe under surface of the roll at a point toward one of said driven rollers oiiset l from .the vertical center line of said roll, said rst ejecting member being adaptedto lift weight of saidl one rollfrom said rst supporting roller onto the second supporting roller whereby the roll is supported entirely 4 by the second Supportel ling roller andthe first 'ejecting member until the roll reaches the crest of the second supporting roller, and a second ejecting member adapted to act on the roll to move it from said second rollers crest in the direction of ejection.

21. A roll wrapping machine, comprising in combination, first and second spaced .apart axially parallel driven supporting rollers for a roll of paper to. be wrapped, said rollers being in axially fixed relationship, first ejecting roller means, a mounting member mounting said rst ejecting roller means at a point-toward said iirst supportingroller from'the vertical center line of said roll, a support means pivotally connected to the axis of said iirst ejecting roller means and extending towards said second supporting roller,

. second ejecting rollerr means mounted on said support means toward 'the second supporting rollers from the vertical centerline of said roll, resilient pressure means acting between said support means Vand the mounting member in an upward direction whereby 'said second ejecting roller means is urged against said roll, positive pressure means adapted to act on said mounting member to urge the first ejecting roller means in an upward direction with the support means and said second ejecting roller neans whereby the iirst ejecting roller means is moved upwards thereby cradling the paper roll on the first ejecting roller means and second supporting roller and gradually moving the roll upward onto the crest of the second supportinLT roller so that the posi- .tion of the second ejecting roller means is depressed in relation to the axis of the rst ejecting roller means thereby compressing said rcsilient pressure means and when the paper roll becomes balanced at the crest of the second sup- :orting rollerl the resilient pressure means reacts on the second ejecting roller means to push the roll orf the crest of Ithe second supporting roller.v

22. A roll wrapping ,machina raccording to claim 21, in which said resilient pressure means includes a spring.

-23. A rollwrapping machine, according to claim 21, wherein said positive pressure means includes a lfluid pressure piston.

f. A21i..A roll wrapping machine, according to claim 2l, wherein saidv resilient pressure means includes a springend said positive pressure means includes a iiuid pressure piston.

25. uIn a paper roll wrapping machine, a pairof spaced-apart horizontal drivinggrollers adapted to support therebetween a paper roll to be wrapped, means for rotating said rollers, an ejec- `tor mechanism comprising, a pair of spacedapart independent ejector rollers, one of Vsaid ,ejector rollers being resiliently biased in relation to the other ejector roller said ejector rollers being pivotallylinked and being disposed be- Vtween'and sub-,adjacent to. theuppei' peripheral surface of said driving rollers, roller support means adapted to move -said ejector rollers up- Y urge said paper roll upwards from contac-t with one of said driving rollers, said resiliently biased ejector roller being vadapted to be depressed by the weight of said paper roll during said lifting j motion,-the continued upward movement of said ejector roller supporting member being adapted to urge vsaid paper roll forwards bring-ing the axes of the rear driving roller and paper roll into substantial perpendicular alignment so as to i transfer most of the weight of the paper roll to the driving roller, thereby allowing the resilient means between said ejector roller and supporting member to expand and urge said ejector roller against the periphery of the paper roll causing it to roll over said rear driving roller.

26. In a paper wrapping machine, a pair of spaced-apart horizontal driving rollers adapted to support therebetween a paper roll to be wrapped, means for rotating said rollers, an ejector mechanism comprising a substantially vertical guideway, a supporting member movable along said guideway, an ejector roller rnoun-ted on said support with its axis parallel to the axes of said rolls, an upwardly extending extension of said supporting member including a seat having an opening adapted slidably to receive a shaft, a roller support mounted cn one end of said shaft and a spring between the roller support and said seat, a roller pivotally mounted on the roller support and linked to said rst ejector roller to retain its spaced-apart relationship, a cylinder and piston linked to the bottom of said support adapted for moving it upward and downward and controlling means for said piston, the said pair of linked ejector rollers being located between said supporting rollers and in a position immediately sub-adjacent the paper roll being wrapped, said ejector rollers being adapted on upward movement of said support to lift the paper roll clear of one of said paper supporting rollers, whereupon the weight of -the paper roll depresses said second ejector roller against the action of said spring causing the paper roll to move forward into Contact with the second driving roller and upon coming into contact with said second driving roller, removing the weight from the second ejector roller, the second ejector roller then being spring actuated against the paper roll causing it to be ejected over said second driving roller.

ALFRED T. HURTER.

ANDR C. ATTENDU.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,037,218 Dirnberger Sept. 3, 1912 1,351,809 Sutherland Sept. 7, 1920 1,570,265 Ljungstrom Jan. 19, 1926 1,764,081 Jones et al. June 17, 1930 2,325,145 Martin July 27, 1943 2,533,993 Bryans Dec. 12, 1950

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