US897691A - Automatic button cutting and shaping machine. - Google Patents

Description

om 0 9 1.. 1| T.. P E S D E T N E mi A P N. O S T A W S. W .L 9 6 71 9 0u nm N AUTOMATIC BUTTON CUTTING AND SHAPING MACHINE.

APPLICATIONv FILED JULY 5, 1907A 3 SHEETS-SHEET Z.

w/r/VESSES PATBNTED SEPT. 1, 1908. W. S. WATSON. AUTOMATIC BUTTUN CUTTING AND SHAPING MACHINE. APPLICATION FILED JULY 5, 1907.

s SHEETS-SHEET s.

WINFIELD SCOTT WATSON, 0F MEMPHIS, TENNESSEE.

AUTOMATIC BUTTON CUTTING AND SHAPING MACHINE.

Specification of Letters Patent.

Patented Sept. 1, 1908.

Application filed July 5, 1907. Serial No. 382,260.

To all whom it may concern:

Be it known that I, WiNriELn Soo'r'r WAT- soN, a citizen of the United States, and a resident of Memphis, in the county of Shelby and Stato of '.lennessee, have invented a new and lm proved Auton'iatic Britton Cutting and Shaping l\'l.achlne of which the following is a full, clear, and exact description.

The invention relates to the art of button making such as disclosed, for instance, in the Letters Patent of thc'United. States, No. S31 ,2393, granted to me onSeptember 1 8, 1906, in the application for Letters Patent of the United States for an automatic button cutting and shaping machine, Serial No. 324,643, filed by me on July 3, 1906, and in the application for Letters Patent of the United States, for a cutting and facing tool, Serial No. 352,738, filed by me on January 17, 1907.

The object of the present invent-ion is to provide a new and improved automatic button-cutting and shaping machine, arranged to automatically eut and dress the face of the button and at the same time sever it from the shell; to prevent the button from sticking in the cutting tool by using the facing tool as a .unch while sliding the cutting tool up on the acing tool; and. to allow of convenient and quick removal of the worn out or dull cutting and facing tools and replacing the same by proper ones while the machine is running.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement, the base being shown in section and the several parts being at rest in lowerinost positions; Fig. 2 is a front elevation of the same, and showing the parts in position for cutting the shell; Fig. 3 is an enlarged sectional front elevation of the chuck and the tools carried thereby; Fig. 4 is a sectional plan view of the same on the line 4--4 of Fig. 3; Fig. 5 is a similar view of the same on the line 5 5 of Fig. 3; Fig. 6 is an inverted plan view, partly in section, of the device for holding and releasing the tools; Fig. 7 is a like View of the same showing the parts in a different/position, Fig. 8 is an enlarged front elevation of the improvement showing the parts in a raised position 3 Fig. 9 is an enarged sectional front elevation of the shell support; Fig. 1() is a plan view of the same; Fig. 11 is an enlarged inverted plan view of the shank for holding the facing tool, and Fig. 12 is an enlarged inverted plan view of the facing tool` On the base A of a suitably constructed frame A, is arranged a shell support B for supporting the shell (l, acted. on by a tubular cutting tool or saw l) and a facing tool E, to cut a porl'fionout of the shell and to :face the top portion. of the eut-out portion, with a view to make a button. The shell C is held in place on the top of the shell. support B during the cutting and facing operation, by a. shell holder F, engaging the upper face of the shell adjacent to the tubular cutting tool D and on the side towards the tip of the shell, as plainly indicated in Fig. 2. The tubular cutting tool I) is providedv at its lower edge with suitable cutting teeth, and the sald cutting tool is held within a tool holder G, in the form of a sleeve adapted to extend at its u per end centrally into a self-centering chuck ll, having suitable gripping devices H for engaging the upper end of the tool holder- G to hold the saine in place in the chuck.

The self-centering chuck Il may be of any approved. construction, but is preferably provided with a body ll, containing the gripping devices ll and mounted to turn in the chuck ll and easing H3, a spring H4 being interposed. between the body H2 and the casing H3, to return the casing H3 to normal position when temporarily held by the operator, for releasing the gripping devices lil while the body lzfl. is turning. The chuck ll. is held on a Morse or other taper I, having a tapering head I held by friction in engagement with a spindle J, mounted to slide up and down in a bearing A2 on the main frame A, and in a barrel K held to slide in a bearing A3 in vertical alinement with the bearing A2. A bevel gear wheel L is mounted to turn with and. to slide on the spindle J near the upper end thereof, and t il ve said bevel gear wheel L is in mesh with a bevel gear wheel L secured on a shaft L2 journaled in suitable bearings A4 arranged on the main frame A. On the shaft L2 are shank l, the chuck ll and the tool holder G carrying the tubular cutter D and the facing tool E. A spring serves to feed the spindle J in a downward direction, and the said spring is coiled on the spindle J and rests with one end on the under side of the bearing A2, and abuts with its other end on a washer O, resting on a ball bearing O, carried by la collar or a nut U, screwing on the spindle J and adapted to be secured. thereto by a set screw 0". The tension of the spring O is regulated by adjusting the collar 01. The upper end of the spindle J is provided with fixed collars l?, l spaced apart, and between the collars l), l. is loosely mounted a shifting collar l, having trnnnions P3 engaging links lf", pivotally connected at their upper ends with an arm Q, secured on a shaft Q', journaled in suitable bearings A'rl arranged on the main frame A. On the shaft Q is secured a downwardly extending hand lever Q?) under the control of the operator, for imparting a turning motion to the shaft Q, so as to swing the arm Q up or down, with a view to slide the spindle J in a like direction, for a purpose more fully explained hereinafter.

The tool holder G is provided near its upper end with-oppositely disposed slots G, engaged by lugs E projecting from the head E2 of the shank E3, removably carrying the facing tool E. The shank E3 extends above the u4 per end of the tubular cutting tool D, and tlie head E2 is fitted to slide in the upper portion of the tool holder' G, as plainly shown in Fig. 3, to allow independentsliding motion of the tool holder G and the cutting tool D relative to the facing tool E,for apurose hereinafter more fully described. The acing tool E is cylindrical and of the same diameter as the shank E3, and the lower end of the facing tool E is preferably provided with a )lurality of radially disposed cutting edges a, for facing the portion of the shell cut out by the cutting tool D, the said facing tool E being formed with a plurality of length- Wise extending apertures E5, fitting onto corresponding pins E6 depending from the shank E3 (see Figs. 1]. and 12). Thus by the arrangement described, the facing tool E turns with its shank E3 when the latter rotates with the tool holder G. The facing tool E is preferably provided with a recess E7 for the insertion of a centering bit if desired.

When the spindle J is ruiming, the chuck H is rotated and with it the tool holder G in which the cutting tool D is removably secured, so that the cutting tool D rotates with the tool holder G. But the facing tool E and the cutting tool D have a sliding movement, one relative to the other and in the direction of their common axis, that is, the tubular cutting tool D after cutting out a portion of the shell C is caused to rise, while the facing tool E is held against rising movement, so that the facing tool E acts as a punch to push out the cutout and faced shell portion, in case the latter sticks in the .lower end of the cutting tool l).

For the purpose mentioned the top of the head E is engaged by the lower end of a plunger .l't, having its upper end lt enlarged and fitted to slide centrally in the shank I (see Fig. 3). The plunger lt extends centrail y through a disk l l5 ,hel d in the chuck l-l, and on the top of the said disk rests one end of a spring it, resting at its other end against the under side of the enlarged end lt, so that the spring it exerts an upward pressure on the plimger lt. Through the upper end of the plunger lt extends a pin lt, also passing through an elongated slot l? forinedin the shank l, and the reduced ends .ltd of the pin lt engage recesses it formed in a sleeve lt, adapted to ei'igage with its upper' end the under side of the cross head S, carrying the shell holder F and clampingly secured to the lower end of the barrel li previously referred to, and having a head K adapted to rest on top of the bearing A3. A spring S is coiled on the lower end of the barrel li., and one end of the spring abuts against the cross head S, while the other end of the spring S rests against the under si de of the bearing A3, to normally hold the barrel K and with it the cross head S in a lowermost position. When, however, the spindle J is raised by the operator swinging the hand lever Q2 forwardly, thon the shank l and the chuck H as well as the sleeve R, are raised to move the cutting tool D up out of the shell, The sleeve R abuts against the under side of the cross head S, so that the upward movement 0f the sleeve lt is limited, while the shank I and the chuck H move still farther upward with the spindle J. Now during the time the sleeve R is held against upward movement, the plunger R is likewise held against such movement, and consequently'the facing tool E, so that the cutting tool D slides upward on the facing tool E, and in case a cutout shell portion sticks in the lower end of the cutting tool D, then the facing tool pushes it out of the same.

The shell holder F is provided with a presser foot F', adjustably secured by a set screw F2 in the lower end of a rod F, having its upper reduced portion F4L partly threaded and screwing in a quill T mounted to turn and slide in the cross head S, previously referred to, and secured to the lower end of the barrel K. The upper terminal F5 of the rod F3 is mounted to slide in a bearing A( attached to the bearing A, and a spring U is coiled on the reduced portion F4, and rests with its lower end on the quill T and abuts with its upper end against the under side of the bearing A, The quill T is provided at its lower end with nuts T extending a distance below the bottom of the cross head S, so as to allow a slight up and down movement of the quill T in the cross head S, the head of the quill l being normally seated on the cross head S by the action of the spring U. By the arrangement described the presser foot F is adapted to engage the shell C at the ti i thereof slightly in advance of the facing tool E, so as to hold the shell in plosition relatively to the su )porting device In order to support tile tool holder G and the tools carried thereby in position in the self-centering chuck H, a slide V is provided, mounted to slide laterally on the under side of thc chuck H, the slide V being preferably in the form of a dished disk, on the top of which is adapted to rest an annular shoulder or collar G2 formed or securedv on the tool holder G (see Fig. 3). The slide V is provided with a central opening V of a diameter suiiciently large for the passage of the collar G2, but this opening V is normally eccentric to the tool holder G, as indicated in Figs. 3 and 6, for a ortion of the collar G2 to rest on the slide V. g'he slide V is provided with elongated slots or guideways V2 engaged by screws V3 screw* in into the bottom of the chuck H, so as to ho d the slide V in position on the chuck and to allow of shiftin the same laterally to mo.ve the o enino' in or out of register with the co lar G2. A spring V4 serves to normally hold the slide V 1n the eccentric position, and. this s ring is secured at one end to the slide V, an is fastened at its other end to a lu H depending from the bottom of the chuck 1I.

When the several parts are in the position shown in Figs. 3 and 4, the tool holder G and the tools D and E carried thereby are supported by the slide V, and when it is desired to remove the tool holder G and the tools D and E then 'it is only necessary for the operator to press the slide V laterally against the tension of the s ring V4 until the opening V re isters with t e collar G2, so that the tool ho der G can slide downward out ot the chuck H and the slide V. In a like manner the tool hold'er G with the tools D and E can be slip ed in position in the chuck H, at the time tliie slide V is in a concentric position relative to the chuck H. New when the machine is running and it is desired to remove the tool holder'G and the tools D and E for grinding, repairing or other purposes, then it 1s only necessary for the operator to temporarily take hold of the chuck casing H3, so as to cause the gripping device H. to release the tool holder G, and at the same time the operator presses the slide V laterally, to bring the opening V in register with the collar G2, so that the tool holder G is completely released and drops out of the chuck.

It is understood that the casing H3 of the self-centering chuck H has about a quarterturn movement relative to the body I-I2 owing to the spring H4, and hence when the casing Ha is held a ainst movement while the body H2 turns, t 1e gripping device H is opened to release the tool holder G.

The support B for the shell C consists of a base B attached to the frame base A', and in the base B is mounted to slide a bearing B2 in which screws a standard B3, in the u rper end oi which is mounted to turn a cap 4 having an inclined top and. a flat side abutting against the fiat face of an arm B5 rising from the base B. A hook B on the arm B5 engages the base B to hold the bearing B2 against movement. By the arrangement described the standard B can be screwed up or down in the bearing B2, to raise or lowerthe cap B4 held with its inclined top always in the same direction, as the ca B4 is held, against turning when screwing t 1e standard B3 up or down. Thus by the arrangement descrlbed a very simple means is provided for bringing the inclined top of the cap B' to the proper height for accommodating shells C of different thicknesses. The cap B4 is inclined on the top so that the butt end of the shell is at the lower portion of the cap, while the tip is at or near the up er portion to be engaged by the free end of t 1e presser foot F of the shell holder F, to bring the inner surface of the shell C into an approximately horizontal position. The upper face of the cap B4 is provided with an annular kerf B7 for the entrance of' the lower end of the cutting tool D after cutting through the shell C.

The operation is as follows: When the machine is properly adjusted to commence cutting the button, the slide of the spindle J in the barrel K is set a proper distance between the head K and the collar O3 on the spindle J, to cut the button and sever it from the shell when the tool has passed through the shell into the ,kerf' in the lead cap B4. The slide in the uill T, between the cross head of' the shell hol( er and the lock nuts T, is set at a proper distance for the free end of the presser foot F of the shell holder F to be in advance of the facing tool E, also a suflicient distance to cover the distance the facing tool cuts into the shell. The shell-holding su port B is then adjusted by screwing up t e standard B3, until the lead cap B4 is u to the free end of the presser foot F of t e shell holder F, and the teeth of the cutting tool D run in the kerf in the lead cap B4. The sliding movement of the chuck shank I on the pin 113 is always equal or somewhat in excess of that ofthe movement of the spindle J, and the sliding movement at the top of the tool sleeve G is always equal or in excess of the movement of the shank I on the pin R3. The operation is then that when the s indle J is rotated and the hand lever Q2 (see Fig. 1) is brought forward, then the s indle and with it the chuck H, tool holder the tools D and E and the shell holder F are raised.

The spindle is lifted the distance of the slide between the collar O3 and the head K, the latter always resting on the bearing A3 until raised. The spindle being raised the distance between the collar and the head K by the forward movement of the lever Qt, the cutting tool D is drawn up approximately flush with the facing tool D and the spring O is compressed an" equal. ('listanee. Further forward movement of the lever' Q lifts the 'barrel K, and the spring S is compressed. and

at the same time the shell holder F is raised, as vits cross head S is attached to the barrel K and the springs U and@ are also compressed. the same distance. When the free end of the presser foot F of the shell holder F .is raised a sufficient distance to slide underneath it a shell, tip-end first, the operator releases the pressure on the lever Q2, While he still holds the shell C in the left hand, and the shell holder F and cutting tool D are let down upon the shell. The free end of the presser foot F engages the shell C first, and the spring U is coin'iresscd. until the facing toolE engages the sliell C.

The distance the facing tool E cuts into the shell C, is the exact distance it is set to go when the lock nut at T has closed the space and is against the cross head S, it being un derstood that the distance the facing tool cuts into the shell is re ulated by adjusting the nut on the quill. 'i or instance, if it is desired to cut into the shell one-sixteenth of an inch to face a button, the space between the nut T and cross head S is referably set at three-sixteenths of an inc 1, which advances the presser foot F one-eighth beyond the facing tool E, but when the three-sixteenths s ace is closed, the facing tool E has advancecFbelow the end of the presser foot F one-sixteenth and would have faced the button. It is understood that the spring S is a strong spring and the s ring U a weak one, so that when the point o the shell holder which is in advance of the cutting tools engages the shell, the spring U will recede until the facing tool engages the shell. This movement is positive and never fails. The spring U is strong enough to hold the shell C, and the spring S strong enough to force the facing tool E to face the button quickly, which is completed before the pressure of the spring O has forced the cutting tool D through the shell at the same time. The operator then completely releases the lever Q2 and the operation of cutting and facing is automatic. When the shell holder F and eutting tool D have been set on the shell C, the o erator releases his left hand from the shell Cp and the right hand from the lever and is now free to attend to another machine.

The saw or cutting tool is always slightly in advance of the faclng tool, for the saw has an inside set on its teeth which the facing tool does not entirely pass through. The redistance into the shell, and when the saw as passed through both spin harmlessly on the button until the lever is brought forward again, when the cutting tool slides up and the facing tool punches out the button Should it have stuck in the end of the cutting tool D.

ln cutting medium sized shells, which are seldom more than a quarter of an inch thick at the thickest place, the space between the head K and the collar O3 need not be more than one-fourth to three-eighths of an inch.

'The thickness o f the shell from the tip to butt not varying in thickness more than onecighth to three-sixteenths of an inch, it can be readily seen that the distance the shell holder F is to be raised from the lead cap B4 need not be more than. the distance necessary to slide the shell into place. The variation then in the thickness of the shell does not materially affect the pressing power of the springs.

The cap B4 is preferably made of lead or other suitable soft material, so that the teeth of thecutting tool D are not liable to be injured when cutting through the shell, the cutting tool D at the first rise of the machine tending to eut circular kerfs B7 into the top of the soft metal cap B4, so that when the eutting tool cuts through the shell C and enters the kerf, it is not liable to split or crack the bottom of the eut-out ortion.

It is expressly un( erstood that as thepresser foot F engages the tip of the shell C 1n advance of the facing tool E and cutting tool D, it is evident that the operator need not hold the shell in place on the cap B4 of the shell support B during the cutting and facing operation.

By holding the shell C down onto the inclined face of the cap B4 by the presser foot B engaging the tip of the shell C, a perfect button is formed by the action of the cutting and facing tools D and E, as the irregularities in the surface of the shell are invariably ris- ,ing toward the butt of the shell, so that the facing tool E can be readily set to eut down a certain depth below the oint of contact between the tip of the shell @and the presser foot F', with a view to produce a perfectly faced button.

It is further understood that by placing the shell C on the inclined surface of the ca B4, the inner surface of the shell is brought Ipproximately into a horizontal position for tie cutting tool D and the facing tool E to readily cut into the shell.

It is to be understood that b my machine the face of the button may e dressed to finish it, or dressed square to be finished by anir other method, or a blank simply cut.

{aving thus described my invention, I claim as new and desire to secure by Letters Patent:

l. An automatic button-cutting and shaping machine complrising a slidable springpressed barrel, a s ell holder carried by the said barrel, a spindle for carrying the cutting and shaping tools, manually controlled means for raising and lowering the said spindle independent of the said barrel, and means on the said spindle for raising the said barrel against the tension of its spring.

2. An automatic button-cutting and shaping machine provided with a s indle mounted to turn and to slide in the irection of its axis, a chuck held on the said spindle, a tool. 'holder held in the said chuck, a tubular cuttin tool held in the said tool holder, afacingtoo Within the said tubular cuttin tool, the cuttin tool having movement in ependent of the acing tool, and means for holding the said facing tool against movement while raising the said spindle, chuck, tool holder and cutting tool.

3. An4 automatic button-cutting and shaping machine rovided with a tubular cutting tool mounted) to turn and to slide in the direction of its length, means for raising and lowering said tool, a facing tool slidably mounted in the said tubular cutting tool and ada ted to turn with the same, and means for olding the said facing tool against slidinglmovement While sliding the said cutting too 4. An automatic button-cutting and shapin machine provided with a chuck, a tool ho der held in the said chuck, a tubular cutting tool held in the said tool holder, means for raisin and lowering the chuck, a facing tool slida l mounted in the said tubular cutting too and ada ted to turn with the same, and means for olding the said facing tool a ainst sliding movement while slidin the sald tool holder and tubular cutting too to cause the facing tool to act as a unch for pushing a button out of the said tu ular cut ting tool.

5. An automatic button-cutting and shapin machine provided with a chuck, a tool ho der held in the said chuck, a tubular cuttin tool held in the said tool holder, a facing too slidabl mounted in the said tubular cutting too and adapted to turn with the same, a shank on which the said chuck is secured, a spindle mounted to turn and to slide in the direction of its axis and carrying the said shank, and means on the said chuck and spindle and coacting with a stationary part for holding the said facing tool against sliding movement on raising the sald tubular cutting tool.

able in the said shank and adapted to engage the said facing tool, and means for engaging the said plunger and holding .it against movement Whi'le raising the said spindle, shank, chuck and cutting tool.

7. An automatic button-cutting and shaping machine provided with a chuck, a tool h ol der engaged by the said chuck and having a flange and a slide held to slide laterally on the chuck and having an. opening for the assage of the said tool holder, the said s ide normally supporting the said flange and the said opening and flange being normally out of register, and when the said slide is shifted laterally the said opening registering with the said flange, thus allowinol the tool holder to drop out of the chuck willen released by the latter.

8. An automatic button-cutting and shaping machine provided with a chuck having gripping means, a tool holder adapted to be engaged by the said gripping means for the tool holder to turn with the said chuck, the said tool holder .having a flange, means for releasing the tool holder from the grippin means of the chuck, and a sprin -presse slide mounted to slide laterally on t e end of the chuck and having a central o )ening for the passage of the tool holder anni normally eccentric thereto for the fiange to rest on the said slide, the latter when shifted laterally moving out of engagement with the said flange to allow the tool holder to drop on releasing the tool holder by the gripping dev1ce.

9. An automatic button-cuttin0r and shaping machine provided with a s ell holder comprising a spring-pressed support mounted to slide, a cross head secured on the said support, and a spring-pressed rod slidably mounted on the said cross head and provided with a presser foot for engagement with the shell.

10. An automatic button cutting1 and shaping machine provided with a shell older comprising a spriijigpressed support mounted to slide, a cross head secured on the said support, a springressed quill havi a sliding movement in t 1e cross head, a ro screwing in the said quill and carrying a resser foot for engagement with the she and means for raismg or lowering the said suport. p 11. An automatic' button cuttin and shaping machine provided with a s idable tool holdin sleeve havin slots at its upper end, a tubu ar cutting too held in the sleeve, a facing tool fitted to slide in the tubular cutting tool and having at its upper end a head provided with pins Workin in the slots of the said sleeve, means for slidln r the sleeve and cutting tool, and means for ioldinuf the facing tool against movement When the sleeve and cutting tool are slid,

12. An automatic button cutting and shaping machine provided withv a tool holding sleeve having slots at its upper end, a tubular cutting tool held in the said sleeve, a facing tool fitted to slide in the said tubularI cutting tool and having a head slidable in the said sleeve, the head having lugs slidingly engaging the said slots, a slidable chuck carrying the said tool-holding sleeve and rotating it and the tools carried thereby, a springpressed plunger Working in the chuck and engaging the head of the facing tool, means for shding the said chuck, and means for preventing the plunger from partaking of the retractile movement of the chuck.

13. An automatic button cutting and shaping machine provided with a tool-hold- 1n sleeve having slots at its upper end, a tuular cutting tool held. in the said sleeve, a facing tool iitted to slide in the said tubular cutting tool and having a head slidable in the said`sleeve, the head having lugs slidingly engaging the said slots, a sli dable chuck carrying the said tool-holding sleeve and rotating it and the tools carried thereby, a springpressed plunger Working in the chuck and engaging the head of the facing tool, means for sliding the chuck, and means Jfor limiting the movement of the plunger with respect to the chuck.

14. A11 automatic button cutting and sha ing machine provided With a spindle, a tool)holder for engagement by the gripping means of the said chuck, and movable means on the chuck for supporting the said tool holder and for disengaging the same, to aller the tool holder to dro out of the chuck on releasing the tool hol er from the gripping means.

15. An automatic button cutting and shaping machine com rising a s indle, means for rotating the spind e, manua ly controlled means directly connected with the said spindle for raising and lowering the latter, a selfcentering chuck on the said spindle, a tool holder for removable engagement With the said chuck, and a shell holder having a springressed barrel mounted to slide on the spindle mde endent of the latter, a cross head on the said arrel, and a springressed rod carrying a presser foot and slidablly connected on the said cross head.

16. An automatic button cutting and shaping machine com rising a s indle, means for rotating the spin le, manua ly controlled means directly connected with the said spindle for raising and lowering the latter, a selfcentering chuck on the said spindle, a tool holder for removable engagement with the said chuck, and a shell holder having a springpressed barrel mounted to slide on the spindle independent of the latter, a cross head on the said barrel and a springressed rod carrying a presser foot and slida )ly mounted on the said cross head, and means on the said spindle for engagen'icnt with the said barrel to raise the latter against the tension of its spring.

17. An automatic button cutting and shaping machine, comprising a sliding and spring pressed spindle, means for rotating the spindle, manually'controlled means for raising and lowering the spindle, a tool holder carried by the spindle, a sliding andspring pressed barrel in which the spindle slides, and an adjustable and spring pressed shell holder carried by the barrel.

18. An automatic button cutting and shaping machine, comprising a sliding and spring pressed spindle, means for rotating the spindle, means for raising and lowering said spindle, a chuck carried by the spindle, a tool holder carried by the chuck, a sliding and spring pressed barrel in which the spindle slides, and an adjustable and spring pressed shell holder carried by the barrel.

19. In a button cutting machine, a spindle, a tool holder carried by the spindle, a barrel in Which the spindle slides, said barrel having a laterally projecting member, a sliding and spring pressed shell holder carried by the said member, and means for limiting the sliding movement of' the shell holder.

20. In a button machine, a spindle, a tool holder carried by the spindle, a barrel in which the spindle slides, said barrel having a cross head, a tubular member slidably mounted in the cross head, means for regulating the sliding movement of said tubular member, a shell holder secured in the tubular member, and a spring surrounding the shell holder and normal y holding the tubular member in its lowermost position.

21. In a button cutting machine, a spindie, a tool holder carried by the spindle, a sliding barrel in Which the spindle slides, said barrel having a cross head, a spring surrounding the barrel and normally ressing the cross head into its lowermost posltion, a tubular member slidably mounted in the cross head, means for limiting the sliding movement of the tubular member, a shell holder carried by the tubular member, and a spring surrounding the shell holder and normally holding the tubular member in its lowermost position, the spring of the barrel being stronger than the spring of the shell holder.

22. In a button machine, a spindle, a sliding and spring pressed barrel having a cross head and in Which the spindle slides, a shell holder carried by the cross head, a chuck, a

sliding in the shank and extending into the.

chuck to engage the shank ci a tool carried thereby, said plunger having at its upper end a transverse pinl Working in the slot of the connecting shank, and a sleeve with which the said pin en ages, said sleeve engaging the cross head of t e barrel.

24. In a button machine, a tubular tool holder, a tubular cutting tool in the holder, a shank in the tubular cutting tool and having interlocking engagement with the tool holder, said shank having a plurality of ins at its lower end, and a facing tool, Within the cutting tool and having a plurality of apertures to receive the pins of the shank.

In testimony whereof I have signed my name to this specieation in the presence of' two subscribing witnesses.

WINFIELD SCOTT WATSON. Witnesses:

VERA WATSON, HELEN WATsonj

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