US1160540A - Corner cutting and bending machine. - Google Patents

Description

'H. B. SMITH 6L J. D. REIFSNYDER. CORNER CUTTING AND BENDlNG MACHINE.

APPLICATION FILED FEB. I5. I9I3.

Patented Nov. 16, 1915.

6 SHEETS-SHEET I.

H. B. SNHTH &1. D. REIFSNYDER.

CORNER CUTTING AND BENDING MACHINE.

, APPLICATION FILED FEBiS. 1913.

Patented Nov. 16, 1915.

6 SHEETS-SHEET 2.

@wi/Immo M H. B. SMITH & J. D. REIFSNYDER.

'CORNER CUTTING AND BENDING MACHINE.

APPLICATION FILI-:D FEB. I5. 1913.

L, Y v Patented Nov. 16, 1915.

6 SHEETS-SHEET 3.

H. B. SMITH L J. D.REIFSNYDER.

CORNER CUTING AND BENDING MACHiNE.

APPLICATION msn FEs.15. 1913.

` 1,1, @07540, Patented Nov. 16, 1915.

5 SHEETS-SHEET 4.

H. B. SMITH & J. D. REIFSNYDER.

CORNER CUTTING AND BENDING MACHINE.

APPLICATION FILED FEB. 15 1913.

l ,l 60,540, Patented Nov. 16, 1915.

6 SHEETS-SHEET 5.

NIIINNN H. B. SMITH & J. D. REIFSNYDER.

CORNER CUTTING AND BENDlNG NAcHlNE.

APPLICATION FILED FEB. I5. 1913.

` Patented Nov. 16, 11115.

HARRY BRIDGMAN SMITH, OF BROOKLYN ,-NEW YORK, AND JAMES D. REIFSNYDER, OF PHILADEIJPHIA, PENNSYLVANIA, ASSIGNORS TO STOKES &; SMITH COMPANY, 0F

SUMMERDALE, PHILADELPHIA, PENNSYLVANIA, A CORPORATION VANIA.

and Philadelphia, State -of Pennsylvania,

respectively, have invented new and useful Improvements in Corner Cutting and Bending Machines, of which the following is a specification.

The'present invention relates to a ma-y chine for corner-cutting and bending paperboard boX-blanks employed in the manufacture of paper or pulp board boxes, and has for its objects to provide a machine wherein the blanks from which the boXes are to be made are fed to the machine one at a time, then cornered or cut out at the four corners to provide side and end wings that constitute the side and end walls of the box, when said wings are folded at right angles t0 the body portion of the blank, and wherein said side and end wings are then bent o r broken along previously defined scoring or creasing lines in order to facilitate the operation of corner-staying the boX-shell when the same is corner-stayed in a staying machine, or to facilitate the covering operation when the box-shell is covered without having been first stayed at the corners.

The machine shown and described in the present application is designed to cut and bend that type of box-blank consisting of a rectangular body-portion having integrally formed side and end wings, the said wings being joined to `the body-portion along weakened lines formed by scoring o'r creasing and along which lines the blank is to be bent to put it in the best possible shape for receiving the corner-stays or the usual paper covering, either or both.

According to the present practice now usually employed by box manufacturers the scored or creased blanks are arranged in pack form and the .corners cut out while in this form, by placing the packs of blanks either in a single or a double corner-cutting machine, e., a machine that will cut either one or two corners from the pack of blanks at a single stroke of the corner-cutting knife,

this requiring either four or two operations upon each pack depending upon the type of corner-cutting machine employed. Afterl Specication of Letters Patent.

OF PENN SYL- CORNER CUTTING ANDIIBENDING- MACHINE.

theblanks have been cornered in the manner indicated they are then taken to the staying machlne where the corner-staying tabs are applied, but before these tabs can be applied the side and end wings of the blanks must be broken or bent along the weakened lines to cause said wings to stand at right angles to the body-portion of the blank. This bending operation is now'usually performed by hand and consumes considerable time.

According to the machine of the present invention the four corners of the blank are cut out at a single operation of the blank cutting mechanism and the side and end wings are then bent at right angles to the body-portion of the blank, this bending operation being eifected by suitable mechanism as the cornered blanks are delivered from the machine.

Experience has shown that where the blanks are cornered singly or one at a time, as with the present machine, a much more perfect and cleaner cut results; whereas, when the blanks are arranged in pack form and then cornered by a single or a double corner-cutting machine, the cut-out corners are not only always true, but the cuts are not always clean, ragged edges frequently appearing in the corners of many of the blanks of the pack, thus rendering such blanks unfit for use.

In order to enable others skilled in the art to understand, make and use our said invention, we will now proceed to describe in detail one embodiment thereof reference being made for this purpose to the accompanying' drawings, wherein:

Figure l is a vertical section partly in elevation, of one form of machine constructed Patented Nev. 16, i915.' Application led February 15, 1913. Serial-No. 748,570.

in accordance with the present invention.v`

Fig. 2 is a sectional plan on the line 2 2 of Fig. 1, looking in the direction of the arrow. Fig. 3 is a vertical section on the line 3-3 of Figs. l and 2, looking in the direction of the arrow, certain parts being shown in elevation. Fig, 4 is an end elevation of theblank feed mechanism looking in the direction of the arrow, Fig. 2. Fig. 5 is an enlarged vertical section of the blank feeding, and the bending mechanisms. Fig. 6 is a diagrammatic plan view of the blank folding guides or throat. Fig. 7 is a rear elevation, partly in section of the blank feeding fingers. Fig. 8 is an elevation partly in section on the line 8-8 of Fig. 7, looking in the direction of the arrow. Fig. 9- is a vertical sectional view of the blank bending lingers and the blank guide or throat. Fig. 10 is a transverse vertical section on the line 10-10, Fig. 2. Fig. 11 is a plan view of the blank before it has been cornered. Fig. 12 isa similar view of the cornered blank.

Referring more particularly to Figs. 1, 2 and 3 of the accompanying drawings the reference numeral 1 designates the table or top-plate of the machine -frame upon which the operative parts of the machine are mounted, said table or top-plate being supported at its four corners by legs 2, the

.latter being preferably mounted upon a base-frame or plate 3, as more clearly illustrated in Fig. 1.

The top-plate or table is provided with a rectangular opening l4, .as more clearly shown in Fig. 2, two opposite walls or edges 5, of which constitute guideways upon which are adjustablysupported two slides 6, which are held in their adjusted positions by means of bolts 7 as more clearly illustrated in Fig. 3. Mechanism is provided for simultaneously adjusting the slides toward and from each other in order to accommodate blanks of different sizes as will hereinafter more clearly appear.

The mechanism for adjusting the slides toward and from each other, consists of a pair of screw-shafts 8, each having right and left hand threaded portions as more clearly shown in Fig. 2, of the drawings,

said threaded portions passing through correspondingly threaded bosses or nuts secured to or carried by the opposite ends of the slides 6, as more clearly shown in Figs. 1, 2, and 3. Each of the shafts 8, is provided with a bevel-gear 9, which are vin mesh-with corresponding bevel gears 10, secured to the opposite ends of a counter shaft 12, Fig. 2. Obviously, by turning one of the 'screw-shafts, 8, as by applying a crank-handle 13, to one end thereof., the two slides 6 may be simultaneouslyadjusted toward or from each other, and when properly adjusted to suit the dimensions of the particular blank to be cornered, the slides may be set or locked against accidental displacement by means of the locking bolts 7, heretofore referred to.

Adjustably supported upon each of the slides 6, is a pair of blocks 14, each carrying, in the instance shown, a rectangular cutting die 1.5,.as more clearly illustrated inlfull'lines in Figs. 2 and 3, and in dotted lines in Fig. 6. These blocks are supported forh simultaneous adjustment toward and from each other, and such adjustment is effected by means of a pair of screw-shafts 16, each having right and left hand threaded portions which are in engagement with correspondingly threaded nuts or bosses 17, carried by each ,of the blocks as more clearly illustrated in Figs. 1, 2 and 5. Each of the screw shafts 16 carries at its end a bevel gear 18, each gear being in mesh with a similar gear 19, splined on a counter shaft`20. Obviously by rotating the countershaft 20, as by applying a handle to the 'projecting `free end thereof, theblocks 14, may be adjusted toward and from each other, and when ad- 'justed they may be set ,or locked against movement by means of headed screws passing therethrough the 'slides 6, Fig. 2. p

From the foregoing it will be understood that by adjusting the slides 8,' to the proper position and then adjusting the blocks 14, upon the slides, the cutting dies 15 may be set at variable distances from one another to suit blanks of various sizes.

Each of the blocks 14, is provided with a vertical extension 21, having side lianges constituting a guideway in each of which is reciprocally mounted a cutter-head 22, carrying a corner cutting blade 23, `at its lower end, the blades of the various cutterheads coperating with the respective cutting dies 15. The cutting edge of each blade 23 is preferably inclined as more clearly shown in Fig. 5, in order to effect a shearing cut.

The blades 23, `are reciprocated toward and from their coperating cutting dies by V means of connecting rods 24 that pass at theirv upper ends through the respective cutter heads 22 and each having its lower end pivotally connected to an eccentric strap 25,

surrounding an eccentric 26, said eccentrics being splined upon parallel shafts 27, two eccentries being mounted upon each shaft as more clearly shown in Figs. 1 2, 3 and 5. The eccentrics are splined upon their shafts in order that they may slide longitudinally thereon when the blocks 14 are adjusted toward. and from each other as heretofore explained.

Each ofthe eccentric shafts 27 is journaled in bearings 28, depending from the underside of the slides 8, as more clearly shown' in Fig. 3, and each shaft carries at one end a beveled gear 29 which gears mesh with corresponding beveled gears 30 mounted upon a power shaft 31 extending longitudinally of Aand journaled in suitable bearings in the machine frame as more clearly shown in Figs. 1, 2, and 3. The power shaft 31 carries a gear 32 that is in mesh with a corresponding gear 33 mounted upon the main drive shaft 34 of the machine, said drive shaft carrying any suitable form of pulley 35 at one end, and for convenience in turning the machine by hand said shaft is provided at its other end with a hand wheel 36 as more clearly shown in Fig: 2. The beveled gears 30 carried by the shaft 31 are splined thereon in order that they may be adjusted longitudinally of the shaft so as to intermesh with the beveled gears 29 when the eccentric shafts 27 are adjusted as before explained.

Each" of the vertical extensions 21 of the blocks 14 is provided'with an upstanding bracket 35, each bracket carrying a horizontally extending guide-way 36 in which is mounted an arm 37 having an inwardly extending portion 38, and a longitudinally slotted portion 39, through which slotted portion and through the guide-way 36extends an attaching bolt 40 carrying a nut 41 on its theaded end. By means of the slot and bolt together with its nut, the arms with their inwardly extending portions 38 may be adjusted.

The inwardly extending portion of each arm 38 carries a'vertically extending wall 42, said walls being arranged in pairs at right angles to each other to constitute a blank bending and receiving throat, all as more clearly shown in Figs. 6, 8 and 9.

The lower end of the throat according to one construction is provided with blank bending blocks 42a said blocks being attached to the inner face of each of the walls 42 at the lower end thereof, and the underside of each block issomewhat beveled or rounded,-

as more Aclearly shown in Fig. 8, said rounded portions of the blocks serving to bend the'wings of the blank inward to cause them to assume a position at substantially right angles to the body portion of the blank when the cornered blanks are forced upward between the blocks. The blank receiving throat immediately above the blocks is wider, or of greater dimensions than that portion of the throat surrounded by the blocks, so

that after the blanks have been forced through the blocks the wing portions of the blank may spread outwardly to some extent owing to the inherent elasticity ofthe material of the blanks, and the blanks will then become nested in pack form in the wider portion of the throat, as more clearly shown in Figs. 5 and9.

In order to deliver the cornered blanks from between the cutting dies after they have been cornered, and for supporting the uncornered blank until it is acted upon by the cutting dies and knives, we provide a vertically reciprocating plunger or ejector 43, as more clearly shown in Figs. 2, 3 and 5, the corners of which are cut out so as to provide for clearance of the angular corners of the cutting knives 23 and dies 15. The upper face of the ejector or plunger 43 normally lies in substantially the plane of the upper face of the cutting dies, and said plunger or ejector is carried by a vertically reciprocating-rod 44 that reciprocates or is guided in bearings 45 fixed to a cross member 46 of the frame. As will be apparent by referring to Fig. 3 of the drawings the ejector or plunger 43 is arranged to move upward in line with and into the blank receiving and bending throat, and the means for reciprocating the said plunger or 'ejector consists of an arm 47 linked at one end as at 48, to a clamp 49 that engages, the rod 44.

- Theother end of the arm 47 is pivoted at 50 to the machine frame and .said arm carries` an anti-friction roller 51 that is maintained by means of a coiled spring 52 into engagement with a cam 53 mounted upon a countershaft 54, said counter-shaft having a gear 55 that is in mesh with the gear 33 on the main drive shaft 34. The cam 53 and the eccentrics 26 are so arranged and operated in timed relation one with the other to cause the ejector or plunger 43 to move upwardV lbe seen that the said blank comprises a body portion A having parallel longitudinally extendlng scoring or creasing lines a and transverse parallel scoring or creasing 'lines b, those portions of thel blank ,beyond the scoring or creaslng lines a and b constituting respectively side wings B and end wings C The cornered blank is illustrated in plan in Fig. 12, in which the same reference` characters indicate like parts, as indicated in Fig. 11.

The uncornered blanks, as illustrated in Fig. 11, may be fed in coperative relation with the corner cutting mechanism, either by hand or by some suitable automatic feeding means. One type of automatic feed is illustrated in the accompanying drawings, Figs. 1, 4, 5 and 10, and while we have shown what we consider to be a preferred form of feed we do not wish to be understood as limiting ourselves to the precise construction shown.

The feeding mechanism illustrated in the figures referred to embodies a table 56 Figs. 1, 4 and 5 supported by suitable brackets from the main framel of the machine at one end thereof. The blanks to be cornered are supported at their forward end upon a block 57, the blanks being arranged in pack form, and the forward end of the pack bears againts a vertically adjustable gate.-v 58 mounted for vertical adjustment in a front plate 59, the gate being adjustable vertically so that its lower -end may be positioned above the upper face of the block 57 just sufiiciently far to enable the free passage of with a beveled gear Z9 mounted uponfthe with the face of the cam 105.

a single blank, the blanks being fed one at a time from the underside'of the pack. The gate 58 is adjusted vertically by means of a thumbscrew 60 threaded upon a bolt 61, the upper end of the gate being provided with a rearwardly extending portion 62 against which a coiled spring 63 acts to enable ready adjustment of the gate. Parallel side guides 64 are provided to maintain true alinement of the blanks of the pack, said side-guides being adjustably mounted upon a supporting strip 64a attached at its opposite ends to vertically extending brackets 64". A corresponding end guide 65 is provided to bear against the end of the pack, as more clearly shown in Figs. 1 and 4,'said end guide being adjustably supported by means of the thumb screw 66.

The rear end of the pack of blanks is supported upon a transverse bar 67 -provided with a shoulder 68 Fig. 5., to engage the rear end of the lowermost blank ofthe pack, the said transverse bar being adjusta ly supported by means of screws 69, Fig. 10, upon a horizontally reciprocating bar 70, said bar being reciprocated at proper intervals, to feed the blanks forward one at a time, by

means of a bell-crank lever 72, Figs. 1 and 4, which lever has a link connection 73 at one end with the said slide bar 70, the lower end of said bell-crank lever'being pivotally connected to an arm 74 having a strap eccentric 75 at one end that surrounds an eccentric 76 carried by a rotary shaft 77, said shaft having a beveled gear 78 at one' end that meshes shaft 34.

Mounted immediately forward of the gate 58 is a pair of blank-feeding rollers 80, 81, between which the forward end of the blanks are fed by means of the mechanism last described. The upper feed roller 80 is yieldingly held in contact'with the lower roller 81 by means of springs 82 and said roller 80 is provided at its outer end with a pinion 83, Fig. 4, that is in mesh with a corresponding pinion 84 on the shaft of the.. lower roller 81. The oppositeV end ofI the shaft carrying the lower roll 81 is provided with a sprocket wheel 85 over which and also over a correspondingly larger sprocket wheel -86 carried by a stub-shaft 87 is passed a sprocket chain 88. The stub-shaft 87 .carries a sprocket wheel 89 over which and overa larger sprocket wheel 90 carried by the shaft 77 passes a sprocket chain 91. By the means described the feed rolls 80, 81 are driven continuously to feed the blanks forward as they are delivered to the rolls.

Immediately forward of the feed rolls are arranged a pair of parallel blank guides 92, Figs. 1, 2 and 5, between which the blanks are fed by said rolls, said guides being adjustable toward and from each other in slotted ways 93 carried by the blocks 14, in

l the table 56 and order to accommodate blanks of dilerent Y' widths.

A horizontally reciprocating blank-pusher is provided to'engage the rear end of-each blank as it is fed between the guides 92 by the feed rolls -to push the blanks into proper position over the ejector 43, and between the coperating cutting dies and cutting knives. This pusher consists of a finger 94 carried by a horizontally reciprocating slide-bar 95 Figs. 1 and 10, said slide bar 95 reciprocating ina suitable guide-way carried by the under side of the table 56. The reciprocating member 95 is actuated by means of a lever` 96 adjustably pivoted at its lower end at 97 to a bracket 98 projecting from the machine frame, and connected to the member 95 at its upper end by means of a link 99 as more clearly shown in Fig. 1. The lever 96 is suspended from a 'swinging link 100 connected at its upper end to the underside of is connected near the lower end of the lever 96, and the means for operating the lever 96 .A

end at 102and having a link cony comprises an oscillating arm 101 pivoted at its upper nection 103 at its lower end to the said lever 96. 'Ihe oscillating arm 101 carries an antifriction roller 104 intermediate its ends, that isregularly and intermittently engaged by a rotary cam 105 mounted upon the shaft 77, asmore clearly shown in`Fig. 1. A coil spring 106 is connected at one end to the lever 96 and at its other end to a fixed part of the machine frame, and serves to maintain the anti-friction roller 104 in contact A similar spring 107 is connected at .one end to the suspension link 100, and at its other bend to a- -suitable part of the machine frame. The lever 96 carries at its upper end a bulfer head 108 that coperates with an adjustable stop 109 carried by the machine frame as more clearly shown in Fig.`1, and serves to regulate and limit the forward movement o the pusher finger 94."By the mechanism described it will be seen that upon the delivery of the blanks between the guides 92, Fig. 1, the pusher finger is immediately brought into operation to push the blank into proper position between the cutting dies and coperating lmives.`

`In order to prevent the forward end of the `.blank as it is fed to the cutting mechanism,

at its other end said link.

vated above the plane of the upper face of the plunger or ejector 43. V

Suitable side guides' are provided upon opposite sides of the plunger or ejector these consisting of guide-strips 112, Figs. 2 and 5, said guide-strips being carried by rods 113 that are adjustably supported in apertured bosses 115, the rods being set to adjusted position by means of screws 116, Fig. 2. the path of feeding movement of the blank, said end-guide being carried by a block that is adjustably mounted in a guide way 118, Figs. 2 and 5, the said end-guide being set in adjusted position by means of the thumbscrew 119.

In addition to the blank-pushing finger 94 that serves to advance the blanks in position between the cutting dies and their cooperating cutting knives after the blank has been pushed forward b v the feed rollers 80, 81, we may emplov oscillating pusher-fingers for advancing and holding the blank up against the end guide 117, while the corner cutting knives are acting upon the blank.

These pusher fingers are illustrated more clearlyin Figs. 5, 7, and 8, two such. fingers being employed. The fingers which are numbered 120, are each rotatably supported upon a pin 121, said pins being carried by y blocks 122, that are adjustable toward and from the blank bending and receiving throat or toward and from one end of the plunger 43, the adjustment being effected by means of headed bolts 123, the heads of which slide in longitudinal guide-ways formed in blocks 12aL that are carried by and move up and down with the movements of the vertically reciprocating knife carrying heads heretofore described. The fingers 120 are each normally urged toward the throat by means of a coiled spring 125, one end ofwhich is secured to the head of the pin 121 and the other end of which bears-against a portion of the finger 120, as more clearly shown in Fig. 7.

i Each finger has a cam-like formation or procam-like format-ion 26 of each finger will bejection 12()l at its upper end, as more clearly shown in Figs. 5 and 8 against which camlike formation normally rests one end of a yielding plunger 127 freely supported in a guide-block 128 that is adjustably supported upon a bracket 128', which brackets are attached to the two vertical extensions 21, therelbeing two such blocks 128, and brackets 128', one being attached to each ofthe two extensions 21, adjacent the feed end of the machine. Each block 128 has a hollow bore in which the plunger 127 freely moves, there being a coiled spring 129 in each bore that normally urges the plungers against the beforementioned cam-like projection 126 ofy the fingers.

In operation when the blade-carrying heads 22 are elevated so as to bring their cutting knives above the cutting dies, the

brought into contact with the lower end of the plungers 127, and this will serve to move the free end of the fingers outwardly and upwardly to the position illustrated Fig. 5. As the cutterheads move downward to corner the blank, othe action of the plungers An end-guide 117 is arranged in` upon the cam-like portions 126, will be gradually relieved until the said portions of the fingers finally leave or move away from contact with the lower end of the plungers as shown in Fig. 8, and the coiled springs 125 will then come into 'play and cause the free end of the'iingers to move forward and engage the rear end of the blank and push the same forward between the cutting mechanism and the forward end thereof into contact with the end guide 117, the lingers maintaining the blank in the position illustrated inF ig. 8, until the corners have been cut therefrom, and the cutter heads are moved upward.

The operation ofthe machine as thus far described is as follows :-An uncornered blank, such as illustrated in Fig. 11 having been fed into the machine between the cutting dies and their coperating corner cutting knives, and being maintained in proper position therebetween by means of the side and end guides 112 and 117, the four heads carrying the four corner-cutters are now 1n the path of movement of the blank-bending and receiving throat, which throat has dimensions substantially equal to the dimensions of the body portion of the blank, so that as the plunger or ejector forces the 'blank up through the walls of the throat the side and end wings B and C thereofwill.

be bent or broken along the scoring lines a and b. The bent blank will remain bey tween the blocks 4.1a of the throat until the plunger or ejector 43 delivers the neXtblank into the throat whereupon the previously delivered and bent blank will be forced out of the contracted portion of the throat into the wider portion thereof, as illustrated in Fig. 8, in which wider portion, during the continued operation of the machine, the cornered and bent blanks will become nested in pack form as shown. Inasmuch as the cornered and bent blanks are arranged in the throat in pack form in the manner indicated, they can be ytaken therefrom in packs as desired for operation upon by the corner staying machine or b v the box covering machine where the blanks are covered without having been previously stayed in a staying machine.

In some instances it hasbeen found de- Y sirable to bend the side and end wings B and C of the cornered blank inward beyond a position at right angles to the body portion ofthe blank in order to insure proper breaking of the wings along the scoring lines, and we have provided means for effecting such additional bending, themeans as constructed in the instance shown in Figs. 5 a'id '9,

of the accompanying'drawings,

while the latter is in the receiving throat,

' and in dierent planes,

and then to subsequently act upon the two vopposite wings of the'blank, these mechanisms being arranged in pairs tooperate simultaneously. so that while one pair is acting upon wings of one blank, the other pan' is acting upon the oppositely arranged wings of an adjacent blank. y

As more clearly illustrated in Figs. 1, 2, 3 and 5, the bending means referred to consists of two pairs of oppositely arranged wing-bending arms or lingers 130, ,the pairs being arranged at right -angles to each other,

and each finger being ldisposed opposite a vertical slot 131 formed 'in eachrof the walls 42 of the blank bending and receiving throat. Each finger is pivotally mounted upon a pin 132 carried by a vertically adjustable stem 133, said stems being set to adjusted position by means of screws 184, as shown in Fig. 9. Each finger isnormally maintained away from the path of movement of the blanks or in a vertical position, by means of av coiled spring 135, wound about-the pin 132, and having -one end secured to the pin and the other end acting upon the finger to eifect theA purpose stated. Each nger is further provided near its pivotal end with an outwardly `extending yielding detent 136 normally urged forward by a spring. seated in a lrecess in the finger, as more clearly shown in Fig.

9, the outer endY of the detent beingjbeveled or cut away at an angle on its under side.

Each of the vertically reciprocating cutter heads 22 is .provided with an upstanding arm 137 having a forwardly projecting nose 138 that is beveled on its upper face, as shown in Fig. 9, `which arms are reciprocated vertically during the reciprocating movement of the cutter heads. The nose 138 of each of the arms is positioned to make contacton its down stroke with the outer end of its associated detent 136 said contact during thedownward movement of the cutter-heads servingnto swing the wing bending fingers or arms inward through the slots 131 into engagement with the wings of two adjacent blanks so as to bend themy inward toward the body portion of the blank, as

more clearly shown in Fig. 9. The two palrs of noses andthe two pairs of wing-bending lingers are, as before stated, arranged 1n diferent planes, andat right angles to each other so that while the lower pain-of iin-gers. Ais bending two of the opposite wings of one' blank, the oppositely arranged pair of fingers will ac t simultaneouslyr to bend the two opposite wings of the blank lving immediately above the blank that is acted upon by the lowermost'pair of fingers, all as more clearlyshown in Fig.,9. `.[n,this.Fig.l 9 the throat is .shown as sufficiently long'to carry blanks are nested in pack-form, such pack A being indicated by the numeral 140, the pack being shown in dotted lines. The receiving cage formed by the upstanding arms 139 is of greater dimensions than the dimensions of the throat, in order topermit the bent wings to move outwardly, which they will naturally do in view of the inherent elasticity of the material of the blank, `and larrange themselves in pack form, and from which cage they may be taken as needed.

From the foregoing description it will be seen that we have provided a machine by which box blanks may be cornered at all four corners during a single operation of the cutting mechanism to insure an accurate and clean cut, and we` have also provided means for breaking or bending the wing portions of the blank along the weakened scoring or creasing lines, the blanks being delivered to a suitable receiving throat or cage' in pack form ready to be operated upon bv the corner staying machine or to be covered by a covering machine without having been' previously 'stayed accordingto the known practice.

All parts of the machine are adjustable to act upon blanks of different sizes, the adjustments beingreadily edected by the means described.

While we have shown and described a preferred form of means for feeding the blanks to thecutting and bending mechanism, we do not wish to be understood as limiting ourselves to the` precise form of feeding mechanism shown as obviously any other suitable blank feedingr means may be employed, or `if desired the blanks may be fed to the machine by hand, although an automatic feed is preferable. l

In the illustrated embodiment of the invention we have shown the blank ejector or plunger as moving in a vertical direction, but we do not wish to be understood as limitingourselves to an ejector or plunger havlng such direction of movement,` as .obviously the ejector may be otherwise moved and the receiving-throat into which the ejec described, except as we may be v'limited by,V

the following claims, reserving to ourselves 130 wings the right to make such changes or modiiications as mav fairly come within the scope of such claims.

VVhai-l we claim is 1. A machine for corner-cutting and bending boX blanks, comprising a plurality of spaced corner-cutting dies and their coperating knives positioned to cut the corners from a' blank placed therebetween, a guideway in substantially the plane of the` dies for directing an uncornered blank fed therethrough over the dies and in position to be cornered, an ejector movable independently of the dies and knives for delivering the cornered blank, and a wing-bending throat adjacent the ejector through which the cornered blank is forced and by which the of the blank are bent at an angle to its bod 2. A machine for corner-cutting and bending rectangular boX blanks, comprising a plurality of spaced corner-cutting dies, and their coperating reciprocating knives positioned to cut the corners from an uncornered blank, means for feeding blanks over said dies, an ejector for supportin the uncornered blank while being cut an for delivering the cornered blank, means for operating the ejector after the dies have acted, and a wing-bending throat adjacent the ejector through which the cornered blank is forced and by which the wings of the blank are bent at an angle lto its body.

3. A machlne for corner cutting and bending boX blanks, comprising a plurality of corner-cutting dies and coperating knives positioned to cut the corners from a blank, means for adjustingjsaid dies and their cooperating knives toward and from each other to accommodate blanks of different sizes, an ejector movable independent of the dies and knives for initially supporting the uncornered blank and for delivering the cornered blank, and a wing-bending throat adjacent the ejector through which the cornered blank is forced and by which the wings of the blank are bent at an angle to its body. n l. A machine'for corner-cutting and bending boX blanks, comprising a. plurality of corner cutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, an ejector normally positioned in the plane and movable independently of the dies for delivering the cornered blank, and a wing-bending throat. adjacent the ejector, comprising spaced walls arranged on opposite sides of the path of movement of the ejector and through which the'cornered blank is forced, and by which the wings of the blank are bent at :1n-angle to its body, and means for adjusting the throat toward and 'from each other to accommodate blanks of different Sizes.

5. `A machine for corner-cutting and bending box blanks, comprising a plurality of corner-cutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, means for supporting a pack of blanks, means for feeding theblanks one at a time. between the dies and their cooperating knives, means for accurately positioning the uncornered blanks between the diesand knives and for maintaining them in proper position duringy the cornering operation, a movable ejector for delivering the cornered blanks, means independent of the dies for imparting movement to the ejector,

land a wing-bending throat in the path of 'movement of the ejector, and through which the cornered blanks are forced by the ejector to bend the wings thereof at an angle to the body portion of the blank.

6. A machine for corner-cutting and bending box blanks, comprising a plurality of spaced corner-cutting dies and their coperating knives positioned to out the corners from a blank placed therebetween, means for guiding an uncornered blank fed in the plane ofv the dies, a pusher arranged to push the fed blank through said guiding means 'for onto the dies in position to be cut, an ejector movable independentl of the dies and knives for delivering the cornered blank from the machine, and a wing-bending throat through which the cornered'blanks are forced by said ejector whereby the wings thereof are bent at an angle to the body of theblank.

' 7. A machine for corner-cutting and bending box, blanks, comprising a plurality of spaced corner-cutting dies and their coper-l ating knives positioned, to cut the corners l from blanks fed singly therebetween, means for supporting a pack of uncornered blanks,

means for: feeding the lowermost blank of the pack forward toward the dies, means for guiding and positioning the blank over the dies, a wing-bending throat inline with the dies, and an ejector movable independently of the knives for delivering the cornered blanks into the said \throat whereby the wings ofthe blank are bent at right angles to its body.

8. A machine for corner-cutting and bending rectangular box blanks, comprising a plurality of spaced corner-cutting dies and -their coperating reciprocating knives positioned to cut the corners from a blank placed therebetween, a wing-bending throat in line with the dies, and an ejector for delivering thel cornered blanks from between 4the dies into said throat whereby the wings of the blank will be bent at an angle toits body,

said ejector being movable independently ofy the dies and knives.

9. A machine for corner-cutting and bending boX blanks embodying a pair of slides, means for adjusting the slides toward and from each other, a pair of blocks adljustably -mounted upon each slide,

a die and block, means for adjusting the blocks and I. each other, a wing ceiving andbending throat bending box blanks,

their cooperating dies and' cutters toward and from each other to accommodate blanks 'of different sizes, a wing bending throat in line with the dies, and a blank supporting ejector movable independently of the dies and-knives for delivering the cornered blanks into the throat.

10. A machine for corner-cutting and bending box blanks, embodying a suitable frame, a pair' of slides adjustably mounted on the frame, a pair of blocks carried by each slide, .a die and acoperating cutting knife carried by each block, and means for simultaneously adjusting the blocks with their cutting mechanisms toward andl from bending throat above andin line with the dies, and a blank supporting ejector movable independently of the dies and knives for delivering the cor` nered blanks into thethroat.

11. A machine for corner-cutting and bending box blanks, comprising a suitable frame, a pair of slides mounted thereon, means for' simultaneously adjusting the slides toward and Jfrom each other, a block carried by each slide, a die cutting knife'carried by each block, means for reciprocating each cutting knife, means 'for adjusting .the dies, cutting knives and their operating mechanisms toward and from each other, a wing bending throat arranged above and in line with the dies, and a blank supporting shaft movable independently of the cornered blank into the throat.

12. A machine for corner-cutting and bending box blanks, comprising a plurality of i corner-cutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, means for adjusting the dies and their knives toward and from each other to accommodate blanks of dierent sizes, means for reciprocating the knives, said means being adjustable with the knives, a wing bending'throat arranged above and in line with the knives, and means movable independently of the knives for delivering the cornered blanks into the said throat. y

13. A machine for corner-cutting and g comprising a suitable frame, two pairs of dies and vcooperating cutting knives supported by the frame, means for simultaneously adjusting said4 dies and their coperating kmves toward and from each other to accommodate blanksV of different size/s, and ejector movable independently of the knives for delivering the corner blanks, and an adjustable blank," reinto which "the cornered blanks are delivered by the Said and coperating f dies and knives for forcing the bending box blanks, 'cornering blanks,

ported by Veach slide, means Jfor adjusting the blocks toward and from each other, a die and coperating corner-cutting knife carried by each block, an arm also carried by each block, a throat Wall carried by each arm, and an ejector. for delivering the cornered blanks from the cutting dies between the throat Walls. j

15. A machine for corner-cutting and bending rectangular box blanks, comprising a plurality of corner-cutting dies and cooperating knives positioned to cut the corners from a blank placed therebetween, an ejector for delivering the cornered blanks, means for moving the ejector independently of the dies and knives, a throat intc` which the cornered blanks are delivered by said ejectorand by which the wings of the blank are bent at an angle to its body, means associated with opposite walls of the throat for further bending the wings of the blank, and means for positively moving said last named means into and out of wing engaging position.

16. A machine for corner-cutting and bending box-blanks, comprising a plurality of corner-cutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, a blank receiving and bending throat into which 'the cornered blanks are fdelivered, an ejector for initially supporting the uncornered blank and for delivering the cornered blanks into said throat, means independent of the dies and knives for operating the ejector, and two pairs of wing-bending devices associated with the throat and arranged at rightv angles to each other for bending opposite wings of different blanks inward toward each other. a

17 A machine for cornercutting and comprising means for a wing-bending and rec eiving throat arranged in line with the cornering means, means independent of the cornering means for supporting the uncornered blanks and for delivering the cornered blanksl into the throat, and a wing bending device associated with each wall .of the throat, for simultaneously bending apair of` oppositely disposed wings of adjacent blanks inwardly beyond the position they sustain with relation' to the walls of the throat.

18. A machine for cornercutting and bending box blanks, comprising means for cornering blanks, a cornering means, an ejector for supporting the uncornered blanks and for delivering the throat in line with said A cornered blanks into said throat, two pairs of wing-bending fingers associated with said throat, said fingers being arranged at right angles to each other and in different planes, and means for actuating each pair of fingers successively to bend the wings of the blanks inwardly.

19. A machine for corner-cutting' and bending box blanks, comprising a plurality of cornercutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, a wing-bending throat in line with the said dies and knives and by which the wings of the cornered blank are bent at right angles to its body, means for supporting the uncornered blanks while being cornered and for delivering the cornered blanks into said throat, and separate positively actuated means associated with the walls of the throat for successively acting upon and further bending inwardly opposite wings of two different blanks.

20. A machine for corner-cutting and bending box blanks, comprising a plurality of corner-cutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, a blank-receiving throat in line with said dies', and into, which the cornered blanks are delivered, said throat comprising wallsy arranged at an angle to each other, and a vwing-bending iinger associated with each wall, said fingers being arranged'to `act upon and bend the opposite walls of two adjacent blanks within said throat.

2l. A machine for corner-cuttingand bending boX blanks comprising a plurality. of corner-cutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, a blank-receiving and bending throat arranged above and in line with said dies, kupwardly moving means for delivering the cornered blanks successively into said throat whereby the wings are bent at right angles to the body of the blank, and means associated with the throat for further bending opposite walls of dif- -ferent blanks inwardly.

22. A machine for cornercutting and bending box blanks, comprising a plurality of cornercutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, a blank-bending and receiving throat above and in line with said dies, an upwardly moving ejector nor-y mally lying in the plane of the dies, means for feeding uncornered blanks onto the ej ector and in position to be cornered, a reciprocating rod upon which the ejector is mounted, and means for reciprocating said rod to move the ejector into and out of they throat for the purpose specified.

23. A machine for cornercutting and bending box blanks, comprising a plurality of cornercutting dies and coperating knives positioned .to cut the corners from a blank placed therebetween, a wing-bending throat arranged above and in line with the dies, an upwardly moving ejector for delivering the cornered blanks into said throat to bend the wings 0f the blank at right angles to its bod a reciprocating rod upon which said ejector is mounted, a pivoted arm having a connection with said rod, and means for actuating said arm to move the rod with its ejector after the dies have acted to corner the blank.

24:. A machine for cornercutting and bending boX blanks, comprising a plurality of cutting-dies and coperating knives to cut the corners vfrom a blank placed therebetween, a blank supporting ejector arranged between the cutting dies, a support for a pack of blanks, a blank-guide arranged between said support and said dies, means for delivering the lowermost blank from the pack into said guide, a reciprocating pusher for pushing the blank from the guide onto the blank supporting ejector and into position between the dies and their coperating cut` ting mechanism, a blank receiving and bending throat arranged above and in line with the dies, and means for raising the ejector to deliver the cornered blanks into said throat whereby the wings of the blank will be bent at an angle to its body.

25. A machineK for corner-cutting and bending boX blanks, comprising a plurality of cornercutting dies and coperating knives positioned to cut the corners from a blank placed therebetween, a blank bending and receiving throat arranged above and in line with said dies, means operating independently of the dies and knives for delivering the cornered blanks into said throat, and means at the upper end of the throat and of greater dimensions than the throat for re'- ceiving the cornered blanks in alined and nested condition.

In testimonyfwhereof we have hereunto set our hands in presence of two subscribing witnesses.

HARRY BRIDGMAN SMITH.

j JAMES D. REIFSNYDER. Witnesses to signature of H. B. Smith: J. GRANviLLE MEYERS, E. H. BICKER'roN. Witnesses to signature of J ames D. Reifsnyder:

C. E. SCHAEFFER, J. L. CoRNoG.

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