US1568062A - Woodworking machine - Google Patents

Description

Jan. 5 1926. 1,568,062

v l o. G. EpMoND WOODWORKING MACHINE @Ramas Jan. 5 1926. A 1,568,062

O. G. EDMOND wooDwoRKING MACHINE Filed July 21l 1924 4 Sheets-Sheet 2 0560/- c2. Edf/md Jan. 5 1926.

O. G. EDMOND wooDwoRKIN MACHINE 4 Shets-Sheet 5 Filed July'2l 1924v y y ql-lic" DI' smr G. Edmond r Jan. 5 1926:

O. G. EDMOND wooDwoRKING MACHINE 4 Sheds-Sheet 4 Filed July 21, 1924 2 lll/111111 am 615m," 61. Edmond Patented Jan. 5, 1926.

UNITE-of Simfree PATENT oFFIeE;

Usciamo. EDMuNnfoFfsPoKANE; WASHLNGQON, AssIGNoRVoFfoNE-HALFTo WHITE Plummer-COMPANY, oF sPoKANRf Waaruit@1ion`V WooDWoRKmeE MCIHNE.

Appncanon filed July' 2i; 19'2'4.

To all whom t 'may concern:

Be' it known that I,`OseAk G. EnM'oNn, a Citizen of 'the` Uiiited- States5`1esidi11g'at Spokane, in SpokaneCounty,l andStateofy Vfashington, have' invented vcertain neivan'd" Useful Improvements' in "lVoodWorklng Mal chinosr` o't which the ollowi'nggislespecifica-f tion.

My present` invention relates to improv in ents in .woodworking kmachines adapted es: pecially fory boring and groovmg thestil'es the sashvv cord. Whi'le the inventio'niis a'pplicable for'iisefin 'machines' ad'aptedv for other purposes, forconvenience' of' illustra;l tion and deseriptiom I have confin'e'd'tlie illustrations land descriptiontothe treatment oi stiles of yWindow'sash.' The'ma'chine 'is' adapted to automatically and"successively" feed Stiles from loenea'thastack,l steppbystep" acrossv a horizontal table`,' and' diiringj'this lateral intermittent movement' of` 'a jstlle. 1t' is' lirst boredk byjtwo spaced bits tofform'angui la'r pockets; second a pair of' rotaryf-euttels' lorm a groove' extendin'gjbetween tliesetwo pockets; and third' an" invisibley orsecret' pocket is bored in the stil'e'at' right angles'to" the i'irst bores@l Iii'addition to" thelateijal movement of the sti'le's5 they are movedlon `:g'it'hdinallyby mechanismlfor the purpose while being grooved.'l After tl'ie'secret'pocket is bored the iinished stile is pushed longitudinally and delivered fromthe machine;y lie mechanism forI performing 'the three' op# crationsfa're automaticallyjactuated from a' power shaft",` and the" lfeed" andl delivery of the stile which are also actuated' fr'ontlielv power shaft, are properly 'timed in order that the stile may be auton'iatitbalf moved'and" operated Lupen' from' the 'time 41t'f1sy placed' manuallyfin a stack:anddelivetedfrom the' machine.

In the accompanying dravvi'ng'sj I 'haveil-f lnstrated' one complete example of' tlie physif cal' e m'ho'diment' of" my 'l'.rventionwherein the' parts' arecomhined and arranged'acc'or'ding' to the bestkmode I have thnsvfai devisedforY the iiiractical applicatiorrl of "the principles oi niyinvention.

semi No'. 727,303?

Figure '1 'is4 a 'top plain* View ofV a machine' en'i'bodyiing my invention;

Fi'gfre' is a vertical ldngiti'idinalsec'- tional vieivv'at' lineQQfoflFigre' l.

`Figni'e 3 is a 'view partly in 'endelevation rowof'y Stiles; the 'feed'Y mech afn'i'sm, laridindY outing' alsofthe"relative#arrangement of 'the woodworking tools ofthe machine;

Figui-e4' is'a view in' elevation at the op;

erato'ris Vside of :the machine, looking 'at the nearsideof Flgil.Y

Fig-ure' 5' 1s' an enlarged" detail view show-- in g the acti'iating mechanism for" the 'pusher'.

feed foi" the Stiles; andthe lcontrolling clu'th mechanism.' v l Figure'is a 'view inweleifatibit'showing.the

opposite' side of` the 'ma'ehiiiefrom' that of" a 'hoiing'bit'and its operating'mechanisnnl showingftlie' machine' fralne' insection' Figure 10 isanj'enlarged'detail'viewof'- the pusher .feed device',l showing its `relation' to tle hopper in whichl the stackfis formed.

The machine Ais provided'ivith'- a frame or'base'l foiminga honsin'gfonpart of the' opeiatihg; 111echan1sm', and' a' table'oi" l'top' 9 is''providedl'fdr' tlie machine.' The power shaft S'isprovided'livith a pulley 4 andthe loelt,w 5' in' Figure"v G: receives-power from a suitable source for rotating the shaft and operating the '-inachine.'

The 'stile's' or'fsidef bars of a fiviiidoiv" sash,`r which have been previously"moitised andL tenoned; ane fed' ornsiippliedimaiitially, to

the machina-and'iiiitliis 'supply a iiglitfside stile-S is"fol'lo\ved' liy"afleftstile S' inloiderr that "whentlie' iiiiished Istiles are delivered from" the -macliine-,- they may readily he are? ranged'- in: pairs fori assembling'- in the shipping', tor'A storing.

On 'tlietahle top a feed hopper isarraifxed" to receive the stiles in a vertical stack, and from this stack the stiles are successively and intermittently pushed laterally into position for the three operations of the woodworking tools. The lowerlnost or bottom stile of the stack is pushed from beneath it and a row of stiles is constantly being fed laterally of the table top.

The hopper or stack holder comprises a pair of spaced, upright guide straps 6.

and a laterally adjustable, elevated guide plate 7 having a lower horizontal flange S for the stiles. An end guide arrn 9 (Fig. 1) together with the spaced uprights 6 and plate 7 form a vertical hopper or trough for gravity feed of the stack of stiles.

The bottom stile of the stack is pushed laterally across the table by means of a laterally reciprocable, intermittently moving pusher feed bar 10, which is disposed longitudinally of the top 2 of the machine, to successively feed the stiles to the right in Figs. 3 and 10. This push bar is operated by movement from a pair ofspaced rock arms 11 on the longitudinal rock shaft 12 which is j ournaled in bearings 13 at one side of the machine. At their upper ends these rack bars or arms 11 are provided with pivot bolts 14 to carry the angle brackets 15 which brackets are movable transversely of the machine in slots 16 of the table top. The brackets are coupled by bolts 17 to the push bar in order that the angle of the push bar may be adjusted to compensate for any irregularities and to insure feeding the stiles in correct position to the woodworking tools of the machine.

The rock shaft 12 as seen in Figs. et and 5 is actuated from a cam shaft 18, which latter shaft is provided with gears as 19 that engages a pinion 2O on the countershaft 21, the pinion being of sufficient length to permit relative movement while in engagement of the gear 19. On the countershaft 21 is a pulley 22 over'which a belt 23 passes from a pulley 21 on the power'shaft 3 (Figs. 2 and 6). The gear wheel 19 is loose on the cam shaft 1S, and the connection between the countershaft and the cam shaft is controlled by a clutch device comprising the slidable clutch member 19 and the member fixed on the cam shaft. A clutch lever 22 which extends to the operators side of the machine for ready access is used to control the clutch and throw the cam shaft in or out of commission. i

The oscillating movement of the arms 11 and consequent reciprocating movement of the pusher bar 10 are accomplished by a flanged cam wheel 25 on the cam shaft 18, which wheel has a recess or depression 26 in the edge of its annular flange. A cam lever 27 having at its free end a roller 28 engaging the annular flange or cam wheel 25 is loosely journaled on the rock shaft 12, but

is held thereto by resilient means for coaction with the shaft under normal operative conditions. A large spring 29 attached to the machine frame bears against the cam lever to constantly hold the roller of the lever in contact with the cam wheel. As best seen in Fig. 8 the rock shaft 12 has a collar 30 adjoining the loose hub 27 of the lever 27, and this collar is fixed on the shaft by means of screws or set bolts 31. In oppo site faces of its periphery the collar is fashioned with a pair of notches 32 in which the upper bent ends or hooks 33 of opposed complementary spring arms 311 engage. These spring arms are located at opposite sides of the lever 27 and their lower ends are secured to the lever at 35. A double spring 36 having one pair of ends connected by a bolt 37 is disposed above the collar, and the lower free ends of this double spring engage the hooks or bent ends 33 of the spring arms 341. From this Aarrangement of parts it will be apparent that with each single revolution of the cam wheel the spring 29 will swing the lever 27 forcing its roller into the depression or recess 36 of the cam. The swinging movement of the lever, through the spring arms and notched collar, rocks the shaft 12 and through the oscillatable arms 11 the push bar is reciprocated. At each reciprocation of the push bar the bottom stile is pushed from beneath the stack and the horizontal row of stiles on the table is moved the width of a stile, laterally across the table top.

This resilient driving connection between the cam lever and the rock shaft is provided for the purpose of stopping the reciprocation of the push bar in case of an emergency or accident, of improper feed of the stiles, or jamming of the push bar. In such instance the movement of the loose lever on the immovable rock shaft will cause disengagement and removal of the spring arms 3A; from the notches in the collar. Upon such removal of the spring arms the lever is free to swing on the shaft 12 without imparting movement thereto while the push bar is idle. The shaft and lever can again be restored to normal position for continued operation of the feed mechanism and woodworking tools.

For the lirst operation of the woodworking tools on the first stile pushed from beneath the stack the stile is retained in position under the flange 8 of the plate 7 of the stacker or hopper, and two spaced, inclined holes are bored into the stile from the underside thereof by means of two boring bits 38 and 39. These boring bits are normally located under the table top 2 and are adapted to be projected upwardly through the top of the table to operative position for boring the holes, after which they are retracted or moved downwardly. These Cil bitsbore a pair' of speced holes into the stile fronth the bottomorlower face thereofrend the parallel' holes are inclinedk or slanted as indicated `by the position of the bits in bolts 4l and', L12,and provided with arcuate slotsor slotted lugs43 for the bolts. The 10W- er-end', ofy the, plete has e. circuler opening 44g 'therethrou i' which euceses e comple*Y nientery circuler boss-45 on the side o'lthe machine. Thus by `first loosening the bolts the lignits olf the slotted lugst3 on thol boss 45,: to adjust the position otthe boring bits with relzxtiqnto'the stile, and then the plate may be locked inuf'ljusted positionby turning home the bolts in their slots.

The y operatingshafts 4G and 417 of the boring ,bits are journeled to slide in bearings 405'of`the-ple'te 40'end the shafts :ire geared together at k48. Power applied. tok pinion 49,1,through-,Whichj shaft' 47 'may slide, by, uobevel 'geant 5,0 onthe power yslutft 3, which shaft isijojurneled in the center .of the circular bossA 45 of. the machine i frame A carrigffe ,51, is `used asn means :for alternaely `elievting` the bits and their shafts to operatieve positio'mnnd for loweringutheni to, inoperative position,- and` this carriage is reciproeuted. fronrthe camshaft 18 as follows;I Acam- 52 onsaideamsheft (Figs. 4 and 5)', hes resting thereon @horizontally disposedloainlever 53 with a roller 54: and e Ypivotelf end supportedonl the; mztchine freine. The other end lof thisl cnm-leyier -isslotted `et l5Gf,or;bolt ,connection to the carriage.l 51 vand itiwvill; be, apparent that with each v revolution .ot the cam, Wheel 52 thelever `5),Will. be oscillllted on itspiv'ot 55` foflift and, retract .theoarringe andits boring.;r bitst- As the carriage isvelevzited the boring bits ,are projectedand bore the two holes inthe. stile from the undersidethere.` of andeafter penetrntingpthenstilerthe requrd.. distance the bits are Withdrawn therefrom.,

The bored. stileis now moved laterally the Width of ya stile to the second position in Fign4 3 `overthe two alined rotnry cutter heads 57 endSnvhioh cutter headsv or cutters form u longitudinal groove in the lower faQ/e of the-,stile terminating with the previously bored holes.` The stile is grooved ivhile itlisbeing .movedlongitudinally to the right;A in l `igs1 i :and 7 'und the rotary out# teil.' heads are operatedpwhile in relatively stationary position. These rotary cutters are mountedy on complen'lentary shvftslnnd G0 journaledI-inln carrier platellocited below the table top zindlwithin the machine freine T hevplnteris pivoted on a horizontal cross rod or ber 62, and has an angular leverrarm-G- depending therefrom. The` lower enolof; 'this' lever arincarriesnroller 645 which; (zo-acts. withi e com f 65 'onthe Cami shaft"l '18'. Writh:` each revolution off the cem shaftthe vCarrier `pleite 6l' is oscilletedonits pivot 62 tol reciprocate theroterycutter heads 57 and '58,11 litinrl themtov operative position,A and Vthen loweringth ein Y toA ino per utive position.-`

These rotary cutters for groorug the stile-ureoperated from the powershaiict f though zrdrivepulley-GG thereon and =belft G'r.' The beltpesses over pulleysS 21ndunder :in idle pulley 70.y The pulley 7U; is journuleid4 on the free end oi :L horizon tally disposed jour-nel erin 7li pivotedfut 72 within the mechine frame, und provided with e weight73. Then the rot-ary outliers are in lowered, inoperative position-, the

gravity controlled 'M1117 l and itsy pulley are t-ionul engagenientioff lthe belt:` wi-tl'i the pulley to operntethe pulleys GSwzlndfGQfuiid thus rotate the cutter heads und groove-the stile.

During the groovingoperationv the stile' is being moved 7 longitudinallytof assist fin the Vnrmetion-ot" the groove. sseeirbest i n- AFigure -7 "an endless A conveyor` chain 7i' is mounted :on thefspaeed sproelet Awheels 75 and 76";1bove the-tabletop.4 This-chain carries a pair of speoedblatter-ally'project-Y ing/ pins 77 and 78';v one of vrwhich! enge-ges the rear end of'n-lternatingstilesand move" the stile tothe righti1rFigfure7 'While 'the cutter heads are operating After the grooving operetion\theother pines-7$ yengegesthe saune endo'f thestile undl moves iti-further to the right toldojtted position, but not however untilafter-e thirfdoperai tion of the rWoodworling; tools tol-bellescribed.v

The sprocket Wheels for the conveyor chain in- Fig;r 7 have shafts-79" end Sil journziled inbeerings'Sl ele `v:ted ebow/'e the tabletop,` andl the she'f-tvv -SO'fis provided :It one end with-zt sprocket Wheel overwhioh the drivel charinaS-l passes.- This-chain is driven from sprocketWheelel onthefcznn shaft'V 18 ('Figs; :ind16')-.-

During the grooving operaie-immo fthe stile :ind While it* being shovedbyone ofthe pins, asy77,the stileisf.retuinedfin sliding' position'zind prevented-troni rising from fthe trible1 top by means oi zr-presse' Jfoot/or plate which isset-usted by the movement othe carrier plete Gl to beardoxvn upon ill? the top surface of the moving stile while it is being grooved by the cutters. The presser plate is pivotally suspended from the free end of an arm 86 which extends longitudinally of the machine and is pivoted at 87 in an adjustable pivot plate 88 supported for slidable adjustment between vertical guides 89 on the vertically arranged elevated, retaining guide plate 90.

One end of the arm 86 is connected by bolt 91 to a horizontal link 92 pivoted at 93 at the opposite side of the plate 90, and a vertical link 9a connects this horizontal link with the carrier plate 61. Thus when the carrier plate 01 is elevated to bring` its cutters 57 and 58 into operative position, the presser plate is also moved to bear down upon the stile and hold it down as it moves longitudinally.

The slidable, adjustable, pivot plate 88 may be vertically adjusted by means of a screw 95 anchored in a bearing lug 9G on the plate and passing through a nut 96 on the slide plate.

The retaining plate 90 flexibly supports the plate 90 by pivoted links 97.

As the stile is being grooved it is moved longitudinally toward the delivery end of the machine by the pins of the chain conveyer, and after the rotary critters have been withdrawn the stile is again moved laterally by a reciprocation of the push bar which moves the horizontal row of stiles the distance equal to the width of one stile. rPhe stile is thus moved to position for operation 1 thereon by the boring bit 98 which bores the invisible or secret pocket or hole in the stile from its lower face at one end of the groove. The pocket bored by the bit 98 is on an incline and the bit moves on its longitudinal axis at approximately right angles to the axial movement of the two bits 88 and 89. The shaft 99 of the bit 98 is longitudinally reciprocable in its journal bearings 100 which are located at the operators side of the machine, and the bevel gear 101 is keyed on the shaft to permit this movement. The gear 101 and shaft 99 are revolved by complementary bevel gear 102 on a cross shaft 103 which shaft has a pulley 104e connected by belt 105 to the pulley 10G on the power shaft 8, for transmission of power to the bit. The bit shaft 99 is reciprocated in its bearings on its longitudinal axis from movement by cam shaft 18 through the .instrumentality of a cam wheel 107 on the cam shaft,

Against the cam wheel a cam arm 108 is held by a spring 109, the latter being secured to the machine frame at one end and positioned to bear against the cam arm at all times. At one end the cam arm 108 is provided with a collar 110 on the bit shaft and is arranged in such manner that each rotation of the cam wheel 107 will cause a reciprocation of the bit shaft-the forward longitudinal movement of the shaft causing the revolving bit to bore into the stile to form the pocket or invisible hole, and the rearward movement of the shaft on its longitudinal axis withdrawing the bit from the bored pocket.

During the boring operation for the pocket the stile is held stationary by the foot plate 85, and after the pocket has been bored the stile is ready to be moved longitudinally and delivered from the table top. For this purpose l employ a rotary member or disk 111 which is provided with a laterally projecting push pin 112 revolving about the axis of the disk. The disk and pin are so arranged that at each revolution of the disk the pin will encounter or contact with the' rear endv of the finished stile, as indicated in Fig. 7, and kick the stile from the table top.

The disk is fixed at the end of a horizontal cross shaft 118 and projects upwardly through a slot 114 in the table top. The shaft 118 is provided with a sprocket wheel 11G driven by the sprocket chain 88 which passes around a guide sprocket wheel 117 on the shaft 118, and the wheel 82 on shaft 80. The horizontal row of stiles are thus fed, intermittently and successively across the table top and operated upon in three different positions, and all parts of the machine are so related and timed that the several functions are performed in the Jroper order until the finished stile is finally delivered at the end of the machine.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent is- 1. In a feedi mechanism the combination with a rock shaft having a loose cam lever thereon and a fixed member on said shaft, of resilient means operatively connecting said lever and member, a cam for actuating the lever, and means for permitting a slip movement between the rock shaft and lever to free the lever from said member.

2. The combination with a rock shaft having a fixed member and a loose member thereon and resilient means for operatively connecting said members, means for actuating the loose member to rock said shaft, and means for permitting a slip movement to free the loose member fromthe fixed member.

8. The combination with a rock shaft having a notched collar fixed thereon and a cam lever' loose thereon, of opposed spring arms carried by said cam lever and engaging the notched collar whereby when the rock shaft is held against movement a slip movement of the spring arms from the notched collar is accomplished.

et. The combination with a rock shaft having a notched collar fixed thereon and a lever loose thereon, a cam und means for holding said lever in engagement With the cani, and :1. spring erin carried by said lever havingl engagement with the notched collar.

5. The combination With L rock shaft l1aving :l lixed notched collar and a cani lever loose on the shaft, of a spring for holdin` said lever in operative position, and n spring erin at each side of seid lever for engage* nient with the notched collar.

G. In a pusher feed mechanism the conibination With n rock shaft and a pair of spaced arms thereon, of a laterally reciprocable pusher ber, a pair of angle brackets pivoted on the free ends 0I' said arms, and un adnsting;` screw connecting` each bracket to said push bei.

In testimony whereof' I affix 1ny signature.

OSCAR G. EDMOND.

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