US1863737A - Button drilling machine - Google Patents

Description

June 21, 1932. o. WETTE BUTTON DRILLING MACHINE Filed Aug. 27, 1929 4 Sheets-Sheet l "fte,

Julie 21, 1932. o, W|TTE BUTTON DRILLING MACHINE Filed Aug. 27. 1929 4 Sheets-Sheet 2 @fa 7W 'Eg MM.

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Il.; In mllinm m June 21, 1932. K C., Wfl-TE ,863,737

BUTTON DRILLING MACHINE Filed Aug. '27. 1929 A 4 sheets-sheet 5 Jam@ 21', B932. o. WITTE l?863,737

BUTTON DRILLING MACHINE Filed Aug. 27, 1929 4 Sheets -Sheet 4 65 3i?. J6 O I afm Wirf Patented June 21, 1932 OTT() WITTE, OF PHILADELPHIA, PENNSYLVANIA BUTTON DRILLING` MAGHINEA Application filed August 27, 1929. ASerial No. 388,676. v

ri`his invention relates to button drilling machines, particularly of the horizontal type, wherein a pair of opposed rotary drills operate upon the button from opposite sides thereof, and drill, ream and countersink the duce an automatic machine by which either` a `two-hole or a four-hole button may be produced.

Another object of the invention is to pro-V duce al button drilling machine in which one, or either of the drills, is utilized for cutting a transverse kerf on the face of the button, from hole to hole for thel purpose of providing a ,thread groove.

Another object ofthe invention resides in means whereby the range of horizontal longitudinal movement of one, or either of the drills may be adjusted, whereby one ofsaid drills `may be utilized for counter-sinking the button from one side thereof, while the other drillis utilized for penetrating Vthelbutton and Vcountersinking the hole upon the opposite side of the button, in registry with the countersink produced .by the first said drill.:

It is a further object of the invention to provide a blank drilling machine in which a single holemay be drilledto produce such articles as game pieces.

It is a further object of the invention to l0 produce a machine in'which the various operating elementsthereof are readily adjust-` able, whereby certainof the: functions of the or size of buttonbeing drilled. A

These and further objects and .advantages of theV invention'will appear and become readily apparent, especially to those skilled in the art of button drilling machines, upon 5 reference to the following specication.

' In the accompanying drawings, formingav part of this specication,

Figure l is a side elevation of the vm'a-y chine embodying the invention;

Figure 2 is acentral longitudinaly section 55" o'f the machine,"taken on the line 2 --2A of Figure;

Figure 3' is a vertical sectionalview taken on the lines 3e3 of Figure 2, looking in the direction of thearrows; f

Figure 4 is an end view f the machine, viewed from the right in Figure 1; i Figure 5 is a top plan view of the button blank hopper;

Figure 6 iS a top 101211 view of the machine 16s? without the button hopper;

Figure 7 is a bottom view ofthe machine; Figures 8 and 9 are front and vertical sec-`r tional views .respectively of ra four-hole type Y, of button which may be drilled withthe mai--v chine;and.; '1 v j f Figure l() is a front View of a two-'hole type of button. y

Referring now more particularly to the accompanying drawings by numerals of ref` 75 erence2-The Vbed 1 of theV machine-*is provided with a central longitudinal slot and is supported throughthe mediumof legs 2, arranged in lpairs at opposite ends thereof, said bed having kjmirna'led transversely upon the 80 bottom thereof'throughrbearing blocks 3, aV pair of cam-carrying shafts 4, 4, arranged respectivelyupon opposite sides of the Vlongitudinal center of thesaidbed 1*. Since the drill operating mechanism, including the S5 drills and their supports are duplicated to a major extent upon opposite sides of the button feeding and chucking mechanism, to be hereinafter described, reference'will be made to each of such mechanisms by liker'eference 90 characters, except as to those elements of the' construction which, however, yare not"com machine may be dispensed with, oraltered to snit conditions, dependent upon the type monto both.

Journaled in' bearing blocks 5 uponthe rear of the'bed l, is a power shaft 6, having95 upon lone end, a pulley T through which it may be driven by a suitable drivebelt 8 from a source of power, not shown. Splined to the power shaft are a pair of worm gears 9,

which mesh with worm wheels 10 keyedfon' ,ma

'.It will also be noted that each of the pockets 16 iS; beveled onone side and has its other the transverse cam-carrying shafts 4 and 4,

and through which the drills are adjusted to cutting positionv with relation to the button in the chucking mechanism, to be later described, and to which said buttons are deli'v:

ered from a hopper 11, supported from the bedof the machine by an arm 12.v The buttons are fed from the-hopper`,ithroughthe medium of a rotary disk 14, having` a plurality of diagonal slots 15, the inner ends of whichpterminate in circular pockets :16, regf istering progressively with an opening 17 in the upper end of a button chute18,icarried by and beneath the hopper l1.

It will be understood that buttons or button blanksvare usually sharp and flat, or concave on one side androunded or convex on the other side, andwhen the button presents its convex face to thevpocket, it will slide outas the disk rotates and lifts it because the pocket Y cannot` holdit, but if thebutton presents its sharp side to the pocket, it will catch on the edge of the pocketv and be carried'pupl bythe disk 14. The pocketsarev only made deep enough to hold the buttons when `the sharp` edgesfof the buttons are presented thereto, and are not deep-enough to hold the button when the rounded edge is presented thereto.

side left straight, as shown Figure 5.., ,d The. rotary disk 14, which is rotatable on the axis 19, is driven through lthe medium' of a worm and gear arrangement 20shown in `dotted lines in Figure 1 by .a sprocket chain 21, trained over a small sprocket wheel` 22,y

the shaftof which drives thewormvand gear arrangement` 20, and a relatively ,larger` sprocket wheel 23, fast on the transverse cam carrying `shaft 4,YY .an` idle pulley 24 being provided to maintain said chain21 taut.

Referring now more especially to Figures plate being provided with an vopening 26,)-r

over which' the buttonV will register when position for drilling.

The button chucking mechanism, shown,

morey clearly in Figure 3, comprisesa pair `of jaws 27, `,suitably recessed; upon' their ,opf posed faces to accommodate the button indi-k cated at, B, vand movable rtransversely of Qthe stationary plate25. in upperand lower guides 28 and 29 respectively, which cooperate with, guide plates 30'carried by the chuckjaws 27,:V the guide plates 3 0 being .turn ,providedv with ribs. 31 which are received within inr f Wardly and upwardly inclined cam slots 32 formed in cam plates 33, carried by a vertically movable frame 34, the cam plates being guided in theirvertical movements with the frame 34 by guide plates 35, iixed to the side edges of the stationaryplate 25 by screws 36.

It will be observedthat the face of the stationary` plate 25 is provided with vertical` slots 37 which effectively clear the contacting faces of the cam plates 33 and stationary plate V"35' of any accumulation of button dust, and

preventzclogging by such dust, which, would` eventually Anecessitate stopping of the machine and removing the parts to clean the same. A machine provided with these clearance 'slots will run indefinitely without clogging,lwhere as, without the slots, itfis neces saryy toshut down the machine every few days and'remove the dust which packs between the contacting working faces of the parts in question and results in binding of said parts. The opposed edgesl of the chuckingjaws27, are further provided withbevelled or rounded portions 38 which' serve the function of cams cooperating with the. terminals. o f thebuttonblank-feedingi'spaced fingers 39, formed on the lower end of a plate 40mountedv forver-v tical adjustment, bymeansof a slot and screw connection 41on a swinging bar 42, pivotally mounted at 43 upon the forward ends of the arms 44 of a .yoke Y45 embracingthe upper reducedend of the stationary plate 25.

' The frame 34, which carries the cam plates Y' 33 for operating the chuckingl jawsr27 is moved lupwardly to release said jaws, and

consequently thebutton, through the medium `of a lever 56, shown more" clearly in Figure 7,

said lever being pivoted intermediate itsends` ona stud vformedon the inner side ofthe' bed frame, and to the right side of the machine, as viewed in Figures 1, 2v and 7. The

free end of the lever 5.6, is providedwith a lat v erally extending plate 58, disposed beneath the lower end ofY an adjustable lifting screw 5,9 threaded into the Vframe 34 and'secured by a locknut 60, and so de signedthat, when said len ver 5GI is roclredon itspiyot by means of a cam.y

61 keyed on transversecam carryingshaft 4',

the frame 34-.with the y,camplates 33 vwill be elevated .to cause the chuck jawsto release the button, the frame being returned toits lowermost positionthrough a pair of rela.- tively heavy coil tension springs 62 connected at their ends respectively to the sides of the ,d frame 34 and arms v63 Vsupported from the underside of the bed 1, 4a stop screw 64 being adjustably threaded'into the frame to limit the lower extent to which ,said frame will be moved. VIt will be understood that as thc frame is moved into its lowermost'position by the heavy springs 62, the chuckY jaws 27 will be cammed inwardly and grip the button in working position. lBy vertical adjustmentof the stop screw, it will readily beseen thatthe chucking position ofthe j awsto accommo-- date largerv or .smaller buttons, lmay be regulated. The cam 61 on shaft 4, and 53fonshaft 4, are so timed that the button Vfeeding fingered plate 4() will be in elevatedposition when the chuck j awcamming. mechanism is in lowered position to grip the button, as shown in Figure 3, and the lingered plate upper end of a vertically slidable fplate47,l

having a vertical elongated drill clearance slot 48, said plate terminating at its lower end in a lug 49, which in turn cooperates with a roller on one end of a lever 51 pivot-V ed at 52 intermediate it ends to the bed of the machine. Splined upon the transverse shaft 4 as shown in Figure 2, that is, onthe left of the machine, is a cam 53, having a single elevation, which is arranged andV so timed with the cycle of operations of the machine, that the lever is operated to elevate the verti-cally movable plate 47, and to permit it to be lowered once for every button which is drilled. The plate 47 is returned to itslower position, wherein it feeds a button tothe chuck jaws, through the medium of a tension spring 54, the ends of which 'are attached respectively to the'yokethrough the medium of the screws 46 and a iiXed part of the bed :guide strips 55.

Referring now to the button drilling and countersinking mechanismV shown more particularly in Figures 1 and 2, I have shown two drill spindles each of which is mounted iin bearings 66 and 67 atthe forward and rear ends respectively ofa vertically oscillatory spindle frame 68, provided with trunnions 69, having their bearings'in a pair of spaced plates 70, formed integral with ya standard v71 and carried by a slide plate `7 2, which is adapted to reciprocate longitudinally of the machine on the bed v1. between guide bars 73 having upper guide ledges 74 which restrain the slide plate 72 against vertical movement lon said bed.

Longitudinal adjustment of the drill 'spindle in its bearings is made possible through a series of collars 75 and lock nuts 7 6, which of themselves do not constitute the major VYfeatures ofpmy invention, since various means may be employed for permitting the longitudinal adjustment of the drills.

The slide plate 72 is slightly less in width V than the distance between the guide plates A73,'the side edges being inclined inwardly `dependingupon whether abutton with a singlecenter aperture, or a two or four hole button is being drilled. This slight inclinationA of the sides of the slide plate is shown in Figure 6, being indicatedby dotted lines. F orthe purpose` of transmitting reciprocatorymovements to each slide plate 72 andto the drilling mechanism, a lcam 77 is provided with la series of elevations-78 and 79,

the elevations 7 8' being of one radiiV and the elevations 79y being of a different radii, for purposes Vwhich will be laterexplained.

These cams 77 which are suitably keyed on the transverse shafts 4 and 4', duringrotation, engage a'rollerl 80, journaled onan arm 81 carried by a longitudinally reciprocatory plate 82jwhich in turn functions as the support upon which the Vslide plate 72 carrying thefdrill operates.` The cams 7 7functionfto reciprocate the plate 82, four times in one direction for every four hole button being drilled, the' plate being returned tol initial position each time by a coil tension spring 83,

connected at its ends respectively, with a'postA 84 on the oscillatory plate'7 2, anda fixedpart 85 on the machine-frame.l A transverse bar 86 serves as the forward support for the reciprocatory plate 82, while the rear rests upon the frame of the machine as shown in Fig' ure 2. For the purpose of transmitting reciprocatory movement lfrom each of the plates 82 to the oscillatory plates 72, there is pivotally supported at its upper portion at each end of the machine, at 87, between a pair of uprightsl 88, a swinging plate l89 provided with a vertical series of threaded apertures 90, in any one of which is adapted to be received, an adjustable thrust screw 91, the position of which in any one of said holes 90, determines the extent of movement of the drill in a longitudinal direction. The cuter end of the slidable plate 82 is provided witha plate 92, which extends upwardly over the lower end of the swinging plate 89, in such manner, that, when the slidable plate moves in either direction, it simultaneously swings the'swinging plate 89 upon its pivot, transmit-ting movement through the thrust screw to the standard 71 which supports the drill f vide means for firstvoscillating the drill spindle laterally and fort-hen moving the spindle ice vertically,'andV to this end. means are provided kfor separately performing each of these functions, the mechanism for transmitting an oscillatory motion to each of the plates 72 and tothe 'drill spindle 65 being first described.'k The forwardV end of 4the spindle frame 68 rests upon a Vhardened metal pilot 94 havingV a plane upper circularface, therunder side of the-spindle frame being -pro-` .i3 Y

vided with a hardened metal wear strip 96. Keyed on each of. shafts 4 and 4, is a cam 97 having a pair of facial cam elevations,

suitably spaced apart, and cooperatingiwith a roller on the free end ofa lever 98 pivoted intermediate its ends -in a bearing block 99 fixed on the .side ofthe'bed frameVAt its other end, said lever is provided with an adjustable set screw 100, which passes through z aregistering opening in the guide plate "7 3 on the bedy frame, and engages one side of the `Y oscillatory plate 72 to move it laterally of the machine and properly direct the drillrcar- V1n my machine to'lnot only drill holes at two l pointsin a horizontal plane, but also to drill.

holesat two points in a vertical plane, this Y feature necessitating the employment of mechanism for periodically raising and lowering the drill spindle and its frame so that the drill point is properly located with respect to the button.V y ,i

At this time, with particular reference to Figures 2 and 7 there will be described a mechanism, through which -therfunctions of the machine juststated, are performed. Arrangedv at the forward endof each of the y drill frames is the pilot 94, previously/ireferred to, this pilot having a round stem 103 mounted for vertical movement as well as roi tary movement in a .bushingi104, threadedV upon its exterior, andy verticallyk adjustable ina cross-bar 105, forming a part of the bed frame. Into-the lower end `ofthe stem 103 is threaded ascrew'106, the head of Ywhich may be engaged by the inner end 107' Vof a lever 108 pivoted at 109 to the bed frame 1.v

The other end of the'lever 108 is provided with a friction roller 110 which cooperates with a cam 111 splined or'keyed on the transverse shaft 4', said cam being so formed that the ,pilot 94 is raisedV and lowered once for every four reciprocations of the drill.. The bushing 104 is provided with a lock nut 112 through whichjit may be locked in YproperV elevation. j In'connection with the pilot feature, it is,of course, unnecessary to bring the drill elevating Vmechanism int-o operation when drilling a two-hole buttonof the type shown in Figure 10, and when such a button isbeing drilled,1it is desired that the pilot i control 'mechanism be thrownV out of operaf tion, and to this end, the screw 106,is either removedfrom the pilot stem, or else screwed down far enough into the'stem that the inner end of the lever 108 does not engage there-`Y with, during its rocking movements. vThus,

the pilot is idle' at such times. lWithin the main` drive pulley 7 is a suitable clutch mechr anism, not shown, which is controlled by 'al clutch lever l116 carried on abracket 117'on the bed of theV machine. Y f j In eachof'the forms of buttons. shown in Figures 8, .9 and 10, it will beV observed that the holes 119 are notl only countersunk from both sides, but that the openings transversely of the button on the flat side are joined by kerfs 121,.which serve as Vrecesses for and to prevent cutting of the sewing thread, and

the garment, and it is one of the functions v also resultin the thread-belng below the` pla-ne of the button face when sewed upon of my machine to automatically cut thisy kerf from hole to hole, inthe manner which will be set forth in the following description of the operation ofthe machine.

l 'Y C Operation' Assuming that the elements of the machine are in the positionjshown in Figure 2, and

that a button blank has been delivered from the hopper 11 yinto the feeding mechanism where it is held by the feed fingers 39 on plate 40 cam 53 on shaft 4 rotates until the low point thereon permits the lever 51 to be rocked, thus allowing the vertieally-slidable Y plate 47 under the action oftension spring 54'to be lowered, said plate carrying with it' the yoke 45 bringingthe button blank X intermediate the chuck jaws 27. During this Y movement of the yokeand the feeding plate 40, theehuck jaws are moving inwardly under the actionofthe cam plates 33, and aslthey approach the button .gripping position, the

beveled portions thereofengage the tips of Y the feeding fingers 39, and cam or wedge them Y outwardlywith theswinging plate 42 on the yoke against the actionl of the tension spring 120 releasing the button blank,v the action of,

the cam plates 33 beingY controlled/by the action of the rotary cam .61 on shaft 4', and lever 56 acting on the frame 34. The button blank isnow held in fixed position by the chuck, and while thus held, drill '65 (No.A 1)

is caused through the cam mechanism 77 to be moved` toward'thebutton, being rotated bythe pulley and belt 114-115, the drill penetrating the b utton blank only. about onehalf its depth,andv forming a countersink;

the vdrill now recedes under the action of the spring 83, and the opposing drill 65 (No. 2) on the other side ofthe button comes .into

action through the camon shaft 4,"and due toa certain adjustment of the screw 91 'on the swinging plate 89, will .have agreater Y extent of lineal movement than the first mentioned drill (No. 1), penetrating thebutton Y through the countersinkmade by the vfirst drill, and countersinking the button on this side also. The second drill l(blo. 2) now re-vv cedes', andthe iirst drill, through the action y of the cam 97 on the side of the machine frame, causes the drillframe to, be oscillated tobring ldrill No. 1 opposite a'new drilling :linearer drags across the button face, cutting a kerf from the rst hole drilled to the second hole which it is about to drill.

Both of the drills are now permitted to be lowered to a new drilling position, due to the action of the cams 111 on levers 108 and pilots 941-, at which time both drill points are under the first holes drilled. Operation of each of the drills (Nos. 1 and 2) is now repeated, and

when the button is fully drilled, the cam` plate carrying frame 34 is raised by the cam mechanism described, and the `button released when it drops into a receptacle below the machine. The cycle of operation is now repeated, it being understood that, with relation to the drills, the cam operating mechanism is so arranged and timed that Vthe operation of drill No. 2 is always slightly in the rear of No. 1. It is to be understood that the extent of movement of the drills may be readily adjusted by adjustment of the screws U91 in the swinging plate, and that the timing of the operations of the several elements of the machine may be readily changed by substitution of different forms of cams. When drilling atwo hole button, it is, of course, understood that the pilot operating mechanism is dispensed with in the manner earlier explained. y

Many slight changes might be made `without in any way departing from the spirit and scope of the invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a button drilling machine, button feeding means, button chucking means, a pair of opposed button drills, meansl for longitudinally reciprocating said drills in alternation, in one horizontal plane, means for reciprocating said drills in alternation in a second horizontal planemeans for oscillating said drills in alternation, longitudinal reciprocation and the oscillation being so timed as to cause oneof said drills to cut a kerf transversely of the button during the oscillating movement thereof.

2. In a button drilling machine, button feeding means, button chucking means, a pair of opposed button drills, means for longitudinally reciprocating said drills in alternation, means for transversely oscillating said drills in alternation, means for vertically oscillating said, drills in alternation, longitudinal retlating'movements thereof.

`: I 3. Inu'alublitton drilling machine, button T70 iciiiP,Iocationfanditheoscillation being sotim'ed as .to cause one v of said drills to cutila' kerf transversely of the fbutton during thevoscilfeeding means, button 'chucking means,a pair fof opposed' drills, means: for longitudinally reciprocating` saidV drills, means for vadjusting the rangejof. longitudinal movement of' either of said drills, means for transversely oscillating said drillsjand means for'verti'cally oscillating said ldrills.

" 1; Inv a button drilling niachine, button lfeeding means, button chucking means, a pair of opposed drills, means for longitudinally reciprocating said drillsin alternation, meansv for transversely oscillating said drills in lalternation, means: 'for vertically oscillating said 'drillsilin alternation, and means lfondisconnecting said verticallyoscillating means. V"-5. In a button drillingmachina button Qfee'ding means,v button' cliucking means,"'a

pair'of Vopposed drills, means for advancingY and retracting said drills, one in advanceof the'other, means for controllingv the range of f-longitudina'l movement of'one of said drills, rmeans for transversely oscillating said drills,

onein advance ofthe other, onedrill being vreciprocated farther thantheother and varyingin range of longitudinal movementltiined to the oscillation so as to cut a lierf during the transverse oscillation thereof in one direction. 6. In a button drilling machine, a machine frame, button. feeding means, button chucking means, a pair of opposed drills, a pair of transverse rotary shafts, journaled in said machine frame, a series ofcams on each of said shafts for each of said opposed drills, means intermediate each of said cams and saiddrills for longitudinally reciprocating the drills .in a plurality of horizontal planes, and transversely oscillating said drills in alternation. y

7 In a button drilling machine, a machine frame, button feeding means, button chucking means, a pair of opposed drills, a pair of transverse rotary shafts journaled in said ioo ilo frame, a series of cams on each of said shafts for each of saiddrills, means'operated by each of said series of cams for longitudinally reciprocating said drills, transversely oscillating said drills, and vertically oscillating said drills in alternation.

8. In a button drilling machine, a machine bed frame, button feeding means, button chucking means, a pair of drill frames mounted upon said bed frame, a pair of transverse rotary shafts journaled in said frame, a` pilot for Asupporting the forward end of each of said drill frames, a rotary drill journaled in each of said drill frames, cam mechanism on said shaft for longitudinally reciproeating each of said drilll frames, cam mechanism on saidshaft for oscillating each of said drill frames,fcam mechanism on said shaft Y ,fr vertically oscillating achofsaiid pilots, i and meansinterm'ediate Veach of "said drill 'frame'r'eciprocating'g means and said drill frame for adjusting the range of longitndinal `re'cip'rocatory movementfof said drillframes. '9. "Ina btton' drilling machine, a machine v frame, button feeding mechanism, button ehncking mechanism,'meansl oni said button chcking" mechanism for' releasingsaid'button from the feeding mechanism to the chucking mechanism, means for adjusting; the del gree of movement of the `j avvs of said chuckfingnechanism, a pair of opposed drills, supporting frames for said dril1s,rmeans for lonitndinallfy` 'reciprocating said supporting raine'sin alternation, means for transversely oscillating said drill supporting frames in alternation iny apluralitjT of horizontal planes in sl'iecesjsion, means for vertically-oscillating said drills in alternation, apilot mechan'isn `1n 'connection with said vertically oscillating mechanism for supporting the forward ends of the siipporting frames, means for connecting or disconnecting said pilot mechanisin,V and means for governing the range of longitudinal movement of either of 'Said drills.' v v In testimony whereof have alixed my signature.

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