US2313981A - Self-shank button drilling machine - Google Patents

Description

arch 16, 19435.

Filed M arch 1940 7 Sheets-Sheet 1 fi z I mm I 0 NR ANN mm n Y r w H- o n M 0 o M Mr 0 O QM WM R o H r R 1 H wk 1 MN o o o 0 o 0 o 0 .MW

O 0/ e u w w wk INVENTORS O J. WEBER JR. L. H. WEBER, I

F. b. WEBER LG. WEBER, CE WEBER W. E WEBER, E. M. WEBER 61 4. 60E 7' ZM/l/V A TTORNEY March 16, 1943- J. WEBER, JR., "arm. 2,313,981,

1 SELF-SHANK BUTTON DRILLING MACHINE "Filed March 21, 1940 7 Sheets-Sheet 2 INVENTORS' J. WEBER Jl? L H. WEBER, Eh. WEEEE LQWEBER,

c. E WEBER n. E WEBER, E. m WEBER, QA'60E7'ZMA/V ATTORNEY :Marl; 16, 1943. J. WEBER, JR., EI'AL 2,313,981

SELF-SHANK BUTTON DRILLINGMACHINE Filed March 21, 1940 7 Sheets-Sheet 4 INVENTORY J. WEBER JR. L. H. WEBER, F. H. WEBER L6. WEBER, C.FI WEBER W.E WEBER, EJ'M WEBER C.A.GOETZMA/V ATTORNEY March 16, 1943. J, WEBER, JR, ETAL 2,313,981

' SELF-SHANK BUTTON DRILLING MACHINE Filed March 21, 1940 7 Sheets-Sheet, 5

Ezg- 6 WWVTORS J. WEBER JR. L. H. WEBER, Him 55E? La. WEBER, C.F. WEBER WE WEBER, 5. m WEBER ,CA. GOETZMA/V ATTORNEY March 16, 1943. J. WEBER, JR., ET Al. 2,313,931

'SELF-SHANK BUTTON DRILLING MACHINE Filed March 21, 1940 7 Sheets-Sheet 6 INVENTORS J WEBER JR.,L. H. WEEE/f',

.WEEER L.6.WEBER, .WEBER WJ-T WEBER. E. m WEBER, CAGOETZMA/V ATTORNEY Patented Mar. 16, 1943 umreo sir-Ar es;

enranr @FFHQE BUTTON DRILLING MACHINE aonmis. (01. 79-11) The present inventionrelates 12912 391 art of drillm blanks in the manufacture 'o-flselfl-s'jhank' ut-j tons. In pa ticular, in accordance withjt J vention, there is provided a' caning machine hic'h we have found to be particul y: suited '(Q'BHQ 5 h h peed drilling of u s lso. ther i o d d a new P2 5,. of drilli g self-sh nk buttons, to which process the present machine is By this invention it has been fonnd possible to prodfuc e this type ofbl fiz ns iil'thiscountry, Prior to this invention andthat discldsed our co;- ie i l e p isa o l i N 3 23.5 fiL dQ Q- m cr 1. 9 q d rect d l das g iorl ri l ng sel sha k but bn v rtua lyfa l Of h i untryh'aye'been ale and are.

and. n e b tton ma na. many ve -ewe a elin'awa i having been made which i drilling such bhttonscornineiiially.

"In designing button dr'illing' machinery, we have 25 found unlocked for difficulties 'hav nundthat the; 'rnachine'- operates much morgsatisfactorily when both the arm chuck and the button chu re a ried bye-sin e odi' mem erapparently reduces relative mo rnent between 39 the. w r m thatw fi ther ar ri srnchroi l us y mov n ody members: Further, wehave found that it is of advantage in the operation of the machine particularly in imp'r oving the accuracy of ill g, to'have the button chuck jaws non-move. e along the axis of the button chuck in such drilling machines as have the axis of. the button chuckf'generally perndi' l o the axi Q he r l b Su a machine is sufficiently accurate a to'p hand-sewing buttons" and In hi tons.

Other objects and advantages will be apparent as thedescript'ion p ete ns. The method comprising the present invention involves the steps of simultaneously'moving a pair of drills, positioned on" oppositefsides of the axis of a self-shank button blank and generally perpendicular thereto, toward said axis the drills being positioned along th axis so as to contact the rear surface of the head and thereby'groove the backof the button blank, then continuing diction of one of the drills to and partially through the shank Q r thebutton blank a d; r tracting and maintaining the other "drill out'of for driving the drum contact with the button blank, and finally retracting the drill which has drilled partially through the shank and moving the other drill into and; the remainder of the way through the shank. As well as passing the other drill the remainder of the way through, this drill may be passed all the way; through the shank to clear the hole and eliminate anyoffset. The rate of passage through the shank for clearing and for eliminating offset may be greater than during drilling proper and thereby increase production.

This invention is illustrated in the accompanying drawings which show embodiments thereof and in which,

Fig. 1 is a front elevation of a machine embodying the present invention;

Fig. 2 is a right end elevation of the machine shown in Fig. 1;

Fig. 3 is a section on the line 3 3 in Fig. 2;

Fig. 4 is a section substantially on the line 44 in Fig. 3;

Fig. 5 is a fragmentary section on a plane passing through the central axis of the drum and through the central axis of one of the drill shafts showing, in detail, one of the chuck and drill assemblies;

Fig. 6 is a detail elevation of one of the chuck and drill assemblies; Fig. 7 is a detail of the box clutch assembly and of the mounting for the drum;

Fig. 8 is a detail section of a portion of the carn track for operating" the drills and of the adjusting meanstherefor;

'Fig." 9 is a detail of an alternative form of chuck jaw for the machine comprised within this invention;

Figs. 10 to 15 constitute a timing schedule illustrating the sequence of drilling operations preferred in the practice of this invention;

'Fig. 16 is a fragmentary section through the central shaft and through one of the drill chucks and shows a modified form of'drill chuck arrangernent in which an independent motor is usedto drive each drill. Also this figure illus-' trat-es a modified positioning of the axis of the drill whereby the drill both makes the hole and reams it to a tapered'shap'e;

Fig. 17 is a sectionon the line |l-l'l in Fig. i t

Fig. 18 is a detail of a drill as shown in Fig. lfi d uring drilling operation on a blank, showing the blank in section;

Fig. 19 is a fragmentary elevation of a machine equipped with a modified form of chuck and chuck-operating cam;

Fig. 20 is a right end view of the machine shown in Fig. 19 more particularly showing the chuck-operating cam; and

Fig. 21 is a section on the line 2|2| in Fig. 19.

In the machine shown, a frame base |8 is provided upon which is mounted a pair of frame plates I! which carry the operative part of the mechanism. On the right hand end of the base IS, the drive mechanism I8 is mounted which, through suitable driving connections, drives the operative parts.

A shaft I9 is carried in openings in the frame plates IT and is held by set screws 25 against rotation in the plates, the set screws allowing rotative adjustment of the shaft. A pair of bushings 2| is carried by the shaft l9 between the frame plates, to each of which is connected a ring 22 by radially positioned webs 23, the rings being concentric with the bushings. A drum 24 is secured to the rings 22 so as to rotate therewith. This drum 24 comprises a cylindrical piece 25, to each end of which one of the rings 22 may be attached, a second generally cylindrical piece 26 and a web 21 located at the mid-point of cylindrical pieces 25, 25 and perpendicular thereto which web holds the pieces in concentric relationship.

During operation, the bushings 2|, rings 22, and cylindrical pieces 25, 2B rotate as a unit on the shaft l9.

A cylindrical flange 28 is formed integrally with one of the rin s 22 and its associated webs 23. At the end of the flange 28 opposite the ring 22, the flange is adapted to have a rin gear 29 secured thereto, by means of which the drum 24 is rotated.

The drive mechanism l8, which as is previously stated is mounted on the right hand end of the frame base l6, includes a motor 30 which is connected through a flexible coupling 3| to a gear reduction mechanism 32, the driving gear 33 of which is in mesh with a gear 34 carried by the shaft 35. The shaft 35 is carried by bushings in one of the frame plates I1 and has secured, as by a key, to its end opposite the gear 34, a pinion 36 which meshes with the ring gear 29. The gear 34 is freely rotatable on the shaft 35 and has secured centrally thereof a box clutch member 31. A second box clutch member 38 is slidably and non-rotatably carried by the shaft 35 adjacent member 31, a yoke arm 39 engaging therewith for effecting sliding movement thereof. A clutch shifting arm 40 is pivoted to the frame for moving the yoke arm.

When the clutch is in engagement, the motor 38 will drive the drum 24 through the gear reduction mechanism, the gear 34, shaft 35, and ring gear 29.

The generally cylindrical piece 26 is in fact formed with a plurality of fiat faces, each parallel to the axis of the drum and equally spaced therefrom. Each face of the drum is provided with an exteriorly opening radial socket which extends into an enlarged portion 4| of the web 2'1. A chuck bar 42 is positioned in each of the sockets, each chuck bar comprising a tubular portion 43 at its inner end and jaws 44 at its outer end, which jaws are integral with the tubular portion. The inner portion of each of the jaws is cut thin, whereby the jaws will flex readily. The end of each jaw may be either as shown in Fig. 5 or as in Fig 9, in either of Which the drill operates at an angle with the chuck bar, and the chuck jaws hold the selfshank button blank with the axis thereof substantially perpendicularly to the axis of the drill.

In the form of the invention shown in Fig. 5, a depression is out in the end of the chuck bar for the reception of the head of the blank 45 with the blank and chuck bar coaxial. In the form shown in Fig. 9, a notch 45, lying in a plane perpendicular to the axis of the drum, is cut in the chuck jaws. As described in our co-pending application, Serial No. 309,860, filed December 18, 1939, such a chuck may have two or more jaws. In the adaptation of this chuck to the present machine, a drilling opening 4! extends through the chuck jaws and intersects the notch 46. When a self-shank button blank is positioned with the head against the jaw 48 and the shank in the notch 46, a drill passed through the opening 41 will engage and drill through the shank of the blank. The enlargement 4| in the web 21 is provided with a set screw to allow axial adjustment of the chuck bar, whereby to drill precisely at the desired location.

The portion of the chuck jaws extending out of the socket is formed with an inclined shoulder 48. A collet .9 is positioned about the chuck jaws for movement into engagement with shoulder 48 whereby to close the chuck. Each collet is carried on the outer end of a pair of rods 50, slidable into and out of the drum, and with the inner end of each pair of rods connected by a plate 5| carrying an antifriction cam follower 52 in axial alignment with the associated chuck bar. Springs 53 are positioned about the rods 50 between the cylindrical piece 25 and the plate 5| whereby normally to hold the collet assembly in position closing the chuck. In order to have the collet assembly as much out of the way as possible, each assembly, while maintained radial of the drum, is located at an angle of 45 to theaxis of the drum as best seen in Fig. 3.

As shown in Fig. 4, a cam 54 is secured nonrotatably on the shaft H) by a set screw 55, the shaft l9 being held against rotation by set screw 20. The cam 54 is positioned in the plane of cam followers 52 and extends forwardly sufiicient to open the blank holding chucks from a position slightly below horizontal to a position slightly above horizontal. As the drum is driven clockwise, as seen in Fig. 4, blanks may be inserted just above a horizontal position of the chucks and, after progressing over the top, down the back side and under the bottom, the chucks are opened in the front by the cam 54, whereupon the drilled buttons drop out. The cam 54 is of a shape not to engage the cam followers except at the front, in all other positions the collets being free to move to closed chuck position under action of springs 53.

For convenience of expression, the chucks heretofore described will be referred to herein-. after and in the claims as button chucks to distinguish them from the drill chucks hereinafter described, though it should be remembered that it is button blanks which are placed in the chucks, not, in fact, buttons.

On each of the heretofore described faces of the drum is positioned a pair of drill supports and driving means, which carry drills for movement substantially parallel to the axis of the drum. While the drills are shown in the drawings as parallel to the axis of the drum, we have found that for some classes of work it is desirable that a; slight anglebe established between the drill andtthe axis; asiby. the insertionof a wedge between: the-,drilli, support and thedrum, or as shown hereinafter. Any angle up to a. maximum of about five degrees (5) for; the purposes of this typeof machine isgenerally perpendicular, and suchis'the meaning of: the-term generally, perpendicula-r as used herein.

Referring-now more particularly-to Figs. Sand 6 a pair of shaftesupporting brackets 56 is secured to. the drum adjacent each button chuck. The brackets are each bolted to the drum and are provided with alongitudinal flange 51- which. slidably engages in a groove in the surface of the. drum, which groove is in alignment with the button chuck. Each bracket has a pair of arms 5-3, each of which is: provided with a bushing. The bushings are: in alignment for the reception of shaft 59'- wh-ioh is slidablyv and rotatably carri d thereby. (on the end of each shaft 55 toward the button chuck is positioned a chuck for holding a. drill. These chucks may be of any desired variety, such as the standard chucks shown or, if desired; may be the well known Jacobs chuck. A flanged pulley Ellis fixed nonrotatably and non-slid'ably to each of the shafts 59,. A spring 6'! is positioned about each shaft between the pulley [ill and the bracket arm 56 adjacent the chuck, there being a thrust bearing 62: between the spring and the cooperating arm. The spring acts at all times to move the shaft 59. and the drill 63 carried thereby away from the button chuck.

At the end of the shaft opposite the drill chuck is positioned a cam follower Ed in adjustable screw-threaded relation to the shaft. In cooperating relationship with the cam followers 64, a circular'cam track 65 is provided on the inner face of each of the frame plates i'i, the cam tracks being best shown in Figs. 4 and 8. The cam tracks are made in short sections 66, each section being secured to the frame plates H by one or more tie bolts 51 and held spaced therefrom by one or more spacing bolts 88. As any one of the shafts 59 is carried about the shaft l9 by the drum, the cam follower will be pressed by the cam track to move the drill toward the button chuck and, upon arriving at the discharge position at the front of the machine, the cam track allows the spring 53 to withdraw the drill.

The drill driving means is provided, in duplicate, to drive the drills on ODQOSltB sides of the machine, the details of one such driving means being best shown in Fig. 4. The drill driving means includes a motor 69 mounted on the base of the machine at the rear and provided with a pulley 1D. A flat endless drive belt ll extends below the drum from the lower side of the pulley l and passes below a pulley 52 located at the front of the machine and sufficiently low that the belt will clear the drum. The belt next passes around a pulley I 3 in front of the machine and then follows back under the machine in driving engagement with the pulleys 66, about the pulley 4; at the upper front of the machine, back around pulley I and to the position of the belt heretofore described at the pulley it. The pulley 1.4. is mounted on arms Hi to swing about shaft ll as a pivot whereby the belt may be tightened as desired.

For convenience in feeding the machine and for positioning the drill gauge 18, the table 59 is mounted in front of the drum at substantially the level of the shaft I 9, being secured at its One ofthe primary advantages of the machine above described is the small number of adjustmerits, needed on the machine to turn out accuratelygauged results and uniform product. Foradjusting the machine initially, the adjustment preferably made first is the position of the button chucks. One of the chuck bars is loosened and adjusted till, if the type chuck shown in Fig. 5 is used, the drills will just pass the end of the bar or, if the type shown in Fig. 9 is used, the drills will enter the drilling opening ll, the set screw then being tightened. The gauge 18 may-then be placed in position engaging the end of the chuck bar which has been so adjusted, and the others adjusted to a position in which they engage the gauge when the drum is turned, bringing each chuck bar in succession into position adjacent the The preferably next adjustment is of the drilling means. The important factor in this adjustment is that the length from the end of the cam follower to the end of the drill be in each instance the same. If it were necessary to measure this each time a drill is replaced, operation of the machine would be greatly retarded. In this machine, then, the cam followers 64 are adjusted on their supporting shafts So that, in normal position, 1. e., in the position assumed under action of the spring 6i when the cam s5 is not acting, the ends of each set of cam followers are in the same position along the shaft I9. The cam followers are then locked in position and no further adjustment thereof need ever be made. For adjusting the drills, the drill chucks are successively moved to position adjacent the table "l9, whereat the drill shafts are in normal spring pressed position, and the drills are successively adjusted to a constant distance from the center plane of the button chucks as determined by the gauge 18. Subsequently, when it is necessary to replace drills, for example, after sharpening, the operator does not need to leave his position in front of the machine to obtain perfect adjustment.

The final adjustment to place the machine in operation is of the cam tracks 65. Any of a varietyof adjustments may be made on these tracks to perform various drilling sequences. Figs. 10 to 15 illustrate our preferred sequence of drilling operations. In Fig. 10, the button blank and drills are in their initial or normal position before drilling commences. The cam tracks are adjusted so that both drills move inwardly and groove the back of the button blank at 84 outside of the shank. Following grooving, as shown in Fig. 12, one of the drills moves in to drill half way through the shank, and the other drill is retracted out of the way to prevent breakage of the drill in case of chipping of the button blank. Then, as shown in l3 and 14, the drill which has penetrated the shank is retracted and the other is brought up by the cam track and gradually moved into the shank. This drill should go into the shank slightly more than half way in order to clear the opening through the shank, and may be moved entirely through to avoid any offset, as shown in Fig. 14. The last drill is then ends to the .frame plates H. A hard!) is secured retracted from contact with the button, as shown in Fig. 15. The positions shown in Figs. to occur sequentially from a position just above the table to a position just below the table. Following withdrawal of the last drill, the chuck is opened and th finished button drops out.

If desired, the grooving operation may be omitted by drilling a shade farther from the face of the blank. In this event, the cam track segments are positioned so that drilling of the shank will occur all around the drum. This will allow greater speed of the drum without increasing the drilling speed since the entire active length of the machine is employed for shank drilling.

Having now described the structure and adjustment of the illustrative machine, for a better understanding thereof, the operation will now be described.

With the machine adjusted as above described, the three motors may be turned on. The motor 39 drives the drum 2 t through the flexible coupling 3I, speed reduction mechanism 32, gear 34, pinion 36, and ring gear 29, the motor rotating in a direction to raise the front side of the drum. The motors 69 drive the drills when positioned anywhere around the drum except the front upper quarter and a discharge space extending a short distance therebelow. The drills are driven by the belt II engaging the pulleys 66, which, being seemed to the shafts 59, rotate both the shafts 59 and the drills 63 carried thereby. As all of the drill and button chuck assemblies work identically, the operation will be followed for one. Starting at the level of the table '59, the cam 54 presses against the cam follower 52 which, through the rods 50, holds the collet in inactive position. The operator places a self-shank button blank in the chuck while open. The cam follower then moves off of the cam 54, resulting in the springs 53 closing the chuck and holding the blank in position. The cam followers 64 then engage the cam tracks 65 which press the drills into drilling engagement with the blank, the drills moving in accordance with the setting of the cam tracks, as heretofore explained. When the button chuck arrives at a position slightly below the table 19, the cam tracks allow the springs 6I to withdraw the drills, whereupon the cam 54 again engages cam follower 52, thereby causing the button chuck to open and allowing the button to fall out.

In the form of the invention shown in Figs. 16 to 18, the machine is constructed in the same manner as in the form shown in Figs. 1 to 15, with the exception of the supports and operating means for the drills. On each face of the drum 26 are disposed two pairs of guides 90, one pair being arranged in each direction from the chuck 42, the guides being parallel to the axis of the machine. The guides 90 are undercut and are complemental to a dovetail portion of a U-shaped bracket 6i which is slidable in the guides parallel to the axis. The two arms of the U-shaped bracket stand out from the drum, the arm 92 being adjacent the chuck and the arm 93 remote therefrom. A slot 94 is provided in the base of the bracket 9| parallel to the guides, and a spring guiding pin 95 is secured in the bracket in the end of the slot distant from the chuck. A spring support 96 is secured in the drum 26 extending into the slot 94. Spring 91 is positioned upon the pin 95 and support 96 so as to normally hold the bracket away from the chuck 42. A stop 98 is adjustably secured to the drum 26 by bolts 99, this stop being positioned in the line of movement of the bracket away from the chuck, adjustment varying the normal position of the bracket.

A cam follower supporting arm I60 is threadedly secured in bracket arm 93, and may be locked in position by lock nut IIJI. The cam follower 64 is adjustably secured to the arm I00 in the same manner as the follower 64 is secured to shaft 59. The cam follower 64 cooperates with the drill operating cam track in the same manner as heretofore described in connection with Figs. 1 to 15,

In each bracket SI a motor IE2 is secured between the arms 92, 93 as by bolts I63. The shaft I04 of the motor is provided with a chuck I05 for holding a drill at its end adjacent the button chuck. A thrust bearing IBIS is provided to take the thrust upon the shaft of the motor during drilling.

While the motor shaft I94 may be positioned parallel to the shaft I9 of the machine and a cylindrical type of drill employed as in the form shown in Figs. 1 to 15, we have shown the motor positioned in Fig. 16 so that the shaft I04 is coplanar with the shaft I9 and at an angle of about five degrees thereto.

When this form of drilling is employed, i. e., when the drill which is generally perpendicular to the axis of the button blank is, in fact, at a slight angle, a tapered reaming drill, such as drill IE1, is preferably employed. With the drill placed at five degrees to the axis of button blank 83, a drill I6! is employed which drills a conical hole with an angle of ten degrees between opposite sides of the hole,

With the button chucks 42 and cam followers 64 adjusted as previously described, the drill operating cam track will then be adjusted in the form of device shown in Figs. 16 to 18, first to move both drills in toward the axis of the button to groove the back of the button adjacent the shank. One drill will then be retracted and the other will be moved to drill just slightly more than half way through. That drill will then be retracted and the drill first retracted will then be moved just slightly more than half way through the shank.

It is obvious that in initially grooving the back of the button adjacent the shank the drill I01 will cut a relatively narrow groove, but when the drill is moved on into the shank, the groove is widened by reaming without being cut deeper.

It should be understood in connection with both the form shown in Figs. 1 to 15 and with that in Figs. 16 to 18 the two drills may simultaneously drill partially through the shank, if desired, prior to alternate drilling.

In the form of the device shown in Figs. 19 to 21, a modified form of button chuck and operating cam therefor is shown. In this form, the cam is omitted. 1

A pair of chuck bars I08 is slidably "carried,

one by each of the brackets 56 of each pair of brackets. A spring I99 connects each pair of chuck bars I08 to draw them together; Each chuck bar I98 is provided with a chuck jaw IIO' attached to its inner end which cooperates with the chuck jaw of the associated chuck bar in the holding of a button. In order to center the chuck,

a pin III is carried by the drum 26 between the chuck jaws.

The outer end of each bar I 08 isprovided with a finger H2 to hook outside of a cam track I I3 which extends in the forward part of the machine from slightly below the center to a. position just prior to commencement of drilling position. Th cam tracks H3 are so shaped as to retract the bars I08 and open the chucks. When the bars "18 pass out of range of tracks H3, the springs I09 close the chucks which are centered by pins l l I. The operation of this form of machine otherwise is the same as described in connection with Figs. 1 to 15. It is obvious that one of the chuck jaws may be mounted stationarily on the drum, and that the other may be movable as shown by the spring and cam.

Having now described our invention, we claim: 1. A self-shank button drilling machine comprising a button chuck having a plurality of jaws arranged about an axis, a continuously rotating body member, rotating on an axis fixed in position, saidchuck being fixedly connected to said rotating body member, a collet slidably mounted on said chuck for sliding movement longitudinally thereof to cooperate with said chuck jaws in causing opening and closing movement thereof, a drill shaft carried by said body member with the shaft position generally perpendicular to the axis of the button chuck, a carrier for said drill shaft rigidly secured to said body member and holding the shaft in fixed alignment with reference to the axi of the button chuck, said drill shaft being adapted for rotation and for translation toward and from the button chuck, said drill shaft and button chuck being carried by said body member for simultaneous rotation about the axis of rotation of the body member with the axis of the drill shaft approximately perpendicular to the axis of the button'chuck, the rigid mounting of the button chuck and the drill shaft eliminating substantially all relative movement of these parts other than longitudinal movement of the drill shaft transversely of the button chuck, a drill chuck, for carrying a drill, mounted on the end of the shaft proximal to the button chuck and means to move said drill shaft and the drill chuck toward and from said button chuck, timed with respect to the movement of the collet along the axis of the button chuck to move the shaft toward the button chuck subsequent to closing movement of said collet and to move the prising a support having a fixed axis about which it may rotate, said support carrying a button chuck fixedly connected thereto for rotation therewith about said axis, a drill carried by said support, means mounting said drill with its axis approximately perpendicular to the axis of a button shank held in said chuck, said chuck and said mounting mean being so fixed in relative position that when said drill is rotated and longitudinally reciprocated transversely to the axis of the button shank it will out along the under face of said button, prior to and while drilling the shank, forming on said face of the button body a needle guide groove.

3. A self-shank button drilling machine, comprising a support, a unitary body member, means mounting said body member for rotation on said support, said body member having an axially extending supporting surface, a button chuck having a plurality of jaws arranged about an axis, means immovably mounting said jaws on said supporting surface with the axis thereof extending at right angles thereto and radially of the axis of said rotating body member, said means including shanks, each of which is rigidly connected to said surface at one end and supports a jaw at the other or free end, said shanks being sufficiently resilient to allow for opening and closing movement of said jaws, a collet mounted in said body member for movement along the axis of said jaws to effect movement of said chuck jaws together and apart, bearings immovably carried by said supporting surface, a drill shaft slidably and rotatably carried by said bearings, said bearings being so constructed and arranged that said shaft is carried in a position substantially perpendicular to the axis of said button chuck and parallel to the axis of rotation of said body member, a drill chuck mounted on the end of the shaft proximal to said button chuck and aligned so that a drill carried by said drill chuck will pass through the shank of a button blank held by said button chuck, means for rotating said drill shaft, and mechanism coordinated with the rotation of said body memher for sliding said drill and moving said collet in proper timed sequence.

JOHN WEBER, JR. CHARLES F. WEBER. LOUIS H. WEBER. WALTER F. WEBER. FRANK H. WEBER. EDWARD W. WEBER. LEONARD G. WEBER. CARL A. GOETZMAN.

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