USRE9086E - Foueths of his interest to heney devehs - Google Patents

Description

4 Sheets-Sheet 1.

F. CURTIS,

Assignor of three-fourths interest to H. DEVENS. Mqchin'e far Mgking Machine-Screws. No. 9,086. I Reissued Feb. 17,1880.

, 4 Sheets-Sheet 3. P. CURTIS, Assignor 0f three-fourths interest to H. DEVENS. Machine forIVIaking Machine-Screws. No. 9,086.

Reissued Feb. 17,1880.

4 sheets -she'et. 4.

I. CURTIS Assign'or of three-fourths interest t6 H. DEvEqs. Machine for Making Machine-Screws,

No. 9,086. Rei'ssued Feb; 17,1880.

UNITED STATES PATENT O FICE.

1 tANUIS cUnTis, or BnATTLnBonoUeH, VERMONT, AssIeNou or. THREE roUnTns or nis INTEREST T0 HENRY DEVENS, or SAME PLACE.

MACHINE FOR'MAKING MACHINE-SCREWS.

SPECIFICATION forming part of Reissiled Letters Patent Ni". 9,086, dated February 17, 1880.

'Original No. 120,044, dated October 17, 1871. Application for Reissue filed 0etol ==r 1, 1879.

To all whom it may concern:

,Be it known that I, FRANCIS CURTIS, of Brattleborough, in the county of Windham and State of Vermont, have invented certain new and useful ll'nprovements in Screw-Machines; and I do h ereby declare that the fol-- lowing is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

lhe nature of my invention consists in the construction and arrangement of a screw-ma.- ehine, as will be hereinat' fOltll. My invention has reference to that class ofm achincs in which the rough rod or wire of metal, of sutl'icie'lt size to form the head of the desired screw, is introduced to a continually-revolving chuck, by the chuck conducted to the opera-ting-tools, by which a screw is partially finished, and then separated in some manner from the rod, to be completed elsewhere; and its object is to provide a machine that will antomatically and continually produce perfectlyfinished machine-screws, the length of the rod supplied to the chuck being the only limit to such continuity. lleretofore it has been common to the art to move the rod forward the proper distance'to form a screw, and then operate upon it successively with the requisite tools moved to and front it.

In my machine a chuck is so connected and operated that it grasps the rod firmly, and, moving forward, feeds it to tools that form the body and thread of the screw,

Using the chuck as a feeding device constitutes the first part of my invention.

Before myinvention no means existed wh ereby the screw-blank, after having the thread cut, could be retained in the die and completelysevered from the rod while secured in and revolviu with the chuck. By my method the d ie, after it has advanced and cut the screwthrcad the proper lengthjupon the rod, is allowed to revolve in unison with the rod, receivin g motion therefrom, until the scrcW blank held in the die is severedfrom the rod bythe parting-tool, and from that time retaining it in the die, which is used as a carrier to bear it to ter more fully set the various tools required to perfect it, the said tools being arranged on one plane, as shown and described hereinafter.

In so arranging the die and its attachments as to allow it to revolve in unison with the rod from the time the screw,-thread is out until the rod is severed forms the second part of my invention. t

Using the rod secured in the chuck. as the medium to communicate motion to the-die is the third part of my invention.

In using the die as a carrier or the partiallyfinished screw-blank to the various finishingtools constitutes the fourth part of my invention.

Heretofore machines of this class have required for feeding the wire a constant attendant. My machine does not, acting in this respect automatically. 1 have, by a combination of the rod operated upon and theehuck acting as a feeding device, provided a means of stop.

ping the operating parts of my machine when the length of rod is nearly exhausted, and in this combination is found the fifth part of my invention. i

- The production of a perfectly-automaticmachine for the manufacture of machine-screws from a rod of metal, constructed and operating as hereinafter described,;is my whole invention. I

' To make my descriptionmore readily understood I should here say the motions of my machine are of three kinds: first, the usual revolution of shafts comm unicated from the source of power by pulleys, belts, and gears; second, *lateral movements in a forward "direction produced, measured, and controlled by cams upon the cam-shaft, and acting directly through sliding bars, wedges, and other devices to accomplish the positive work of making the screws; and, third, lateral movements back ward, effected by springs employed torestore the parts to theirnormal position, ready to be again put in service by the cam-shaft and its associated mechanism. p

Expressing in detail the operations upon the rod required to perfect one screw, they are, viz:

The rod is introduced into the tube S, which is embraced in and carried by the hollow' spin-.

die E then firmly grasped by-the chuck W;

byit carried forward the proper distance to allow the body of the rodto be reduced by the tool a to the size required for the thread of the screw; the thread cut by adie, J; the partially-tormed screw separated from the rod by a parting-tool, R; the head formed by a header, f; the slot cut by a saw, it, and the finished screw removed from the screw by a screwdriver,

In order to enable others skilled iii the art to which my, invention appertains to inake and use the-same, l'will now proceed to describe its construction and operation, referring to the annexed drawings, in which- Figure l is a plan view of my machine. Fig. 2 is a-side view, Fig. 3 a front view, Fig. l nhottonfview, ofthe "same. Fig. 5 is an enlarged longitiulinal section ofa hollow tube through which the screw-blank passes. Figs. 6, 7,;and S are enlarged detached'views of the mechanism which operates a screw-driver to release the screws after they are-completed. Figs. 9, 10, and 11 are enlarged detached views of the chuck and its attachments. Fig. 12 is a "iew of a sliding wedge at the rear of the machine. Fig. 13 is a detached view of the mechanism for operating the header. Fig. 14 is a perspective view of-the saw that cuts the slot in the screw-head, and Fig. 15 is a side elevation of clog 12 A represents the frame work of my machine, constructed in any suitable and convenient manner to support the various parts of which my machine is composed. 0n the left side of the fram'eAis a short horizontal shaft, B, passing into the frame and having on its outer end a pulley, G, to which motion is imparted by a belt from pulley, l), on a hollow spindle, E, located above and parallel with the shaft B.' The motion to the hollow spindle is communicated from the motive power through a belt around a pulley, G, on said spindle. Uponv the inner end of the shaft B is a miter- 'wheel, :1,- gearing-with a similar wheel, 1), upon a shaft, H, by which arrangement shaft H revolves with the hollow spindle. The front end of this shaft has a stationary bearing in the front side of the frame A, while its rear end has its bearing in an arm, I, extending from one endof a swinging bar, J, which is located on the inner side of the rear end of the-machine. p

The opposite end from the arm 1 ofthe swinging bar J is pivoted to the frame A, which allows the endwith the arm to be raised and lowered at will by means that will be hereinafter described. Upon the shaft H is a worm or screw, K, which is to gear with a. large cog-wheel, L, upon the end of a horizonml shaft, M, situated across the reariend of the frame A, and carrying a series of cams for operating the various parts of the machine.

' When the end of the swinging bar J, with the arm I, is elevated, the worm K gears with the wheel L, and consequently turns the shaft M;

but when said swinging bar and. arm are allowed to drop down by their own weight the Worm will be thrown out of gear with the wheel L and stop the motion of the shaft U. The motion of the swinging bar J is caused by a wedge-shaped bar, N, situated under said swinging bar J and supported by two guides,

(Z and c, the former attached to,; thc swinging bar J and the latter to the frame A.

To the end of the wedge-shaped bar N is attached'or formed a downwardly-projecting arm, 0, in the lower end of which is inserted a crank,f, upon a-rod, It. This rod runs along the opposite side of the frame from the shaft ll, and on the front end of said rod It is attached an angular lever, P. The lower end of this lever is forked and has a pin, i, through .it, which pin is, when said end of the-lever I is thrown inward, caught by a hooked lever, It, pivoted on the front side of the frame A, and the hooked end drawn upwardby a spring, is. as shown "in Fig. 3. When the hooked end of the lever It is released from the pin '2 a spring, in, attached to the upper part of the angular lever B, throws the same back into position. The firstulescribed movement of thelcver l throws the wedgeshaped bar N inward by turning bark, which operates crank f, which,in turn, drives forward 0 and the bar N, raising the swinging bar J and causing the worm K to gear with the wheel L, while the second movement draws the wedge-shaped'bar outward, throwing the worm out of gear.

The throwing out'of gear may he performed both by hand and automatically when the rod from which the screws are made is used up. Automatically it is performed in the follow- .ing manner: In the hollow spindle E is inserted a hollowztube, S, and in the inner end of the same is inserted a small tapering collar, n, the hole in which is just large enough for the rod 12, of which the screws are made, to pass through. The outer end of this rod is formed with a hook .or other projection, r, as shown in Fig. 5. As this god is being fed into the machine the hook 1 will at last catch on the collar n, and said collar, not being able to pass-through the inner end of the tube S, must draw the said tube inward farther into the hollow spindle E. Now, upon theouter end of the hollow tube S is a circumferential groove, 8, formed by flanges or' collars attached to the same, or in any other convenient manner. In this groove is laid ah ook,'t form ed u'pon theend of a bent rod,'T, which passes through suitable hearings on the front side of the frame A in sucha manner that it can turn in said bearin gs and also bemoved a short distance in and out.

On this rod, at a suitable point, are secured two collars, 'v 1:, between which, on the rod, is

loosely placed an arm, V, the lower :end of" which is forked or slotted and tits over the inner end of the lever B. The end of this lever grows wider toward theiniddle, audits under side is an inclined plane. It is supported on the under side by a pinpassing through both sides of V. As the tube S is moved inward the rod T is also moved in the $8.331; I

- t.he rod to pass throng direction, the hook if being laid in the groove 8, and by this movement of the rod the arm V operates on the inner endpf the lever B in such a manner as tore-lease the hooked end of the same from the pin 2? in the angular lever P, and thus throw the machine out of gear, as above described. A spring, a, placed around the rod T, between the inner collar and the inner bearing, throws the rod and its arm out again when the machine is stopped. The hollow spindle E, Figs. 1,2), 9,10, allou h the hearings on A, in which E revolves, guiding it to the chuck. The revolution ofE, and, indeed, all the motions of the machine, are caused by power applied to the pulley G, fixed on said spindle, and derived from thedriving-shaft by means of a pulley thereon and a belt.

Atthc outward end, of E is a small beltp-nlley, 1), giving mot-ion to the shaft B through pulley U and a belt. To the-rightot"pulley (l, on spindle E, is agear that transfers motion to the header, the saw, and the screw-driver. ()n the inner end otilfl there areflfolnned three longitudinal grooves, Figs. 9 and ll, and three springs (formed from thin metal, so arranged that when open they do not come above the surface of I), are tixed thereon. .The outer end: of these springs .10 .r are bent at about right angles to their bodies over the end and toward the centeuot'l'l, the bent ends having V- shaped notches that embrace, press upon, and

guide the rod, and cause it. to revolve with the body of the screw..

sp'ind'le and prevent it from moving back with tln g'chuck when it isdrawn backward to take another hold.

The chuck W, Figs. 1., 3, .10, is provided with an elongated hub, and so connected with the hollow spindle E that, while free to slide forward and back over the springs any 00, it has coincident revolution therewith, its functions being to receive, lirmly grasp, center, and feed forward any desired length of the rod from the hollow spindle to the ,tool that forms the The forward motion of the chuck is produced in this manner: Under the bed-plate 0f the v The forked arm machincis asliding shaft, X, Fig.4. Attached to onecnd of X. is a hnb,y, with a forked arni that connects with agroovc cut in the end of the elongated hub of the chuck, Figs. 55, l. y and its connections, includ-- ing the chuck, are moved forward by wedge ,1 Fl 1, attached to a slidin bar A o')cr-" 5- a 7 y l ate-d b cam B nin 2 causin the back- 5 h a r Eva-rd mot-ion.

jaw, 45, is attached, as shown by Fig. 10. "Now,

The griping and centering functions of the chuck are ZLUOOlHllllSiltidlll this manner: Gollar Z isarrangcd to slide forward and back over the elongated hub, Figs. 1, 3. From the face of Z next the chuck three pins,j", projectf passing through the chuck to the face side,

wnere they are attached to buttons h. ,Each of these buttons IL operates a lever, 12, to whlch a when collar Z is moved from the chuck these parts so operateas to shut the jaws i firmly upon the rod. Reversing the motion reverses the effect. Automatically, this is accomplished by retaining the collar Z stationary, when the chuck commences to move in either direction, as follows; On a sliding shaft, E, is attached a sleeve, 1), having a forked arm, 0, thatenters a groove cut in collar Z, Figs. 1, 3. 0ne side of the sleeve I) has a pin or arm, (1, 'which is held by a pair of jaws, c c, operated by the end of sliding bar A. The movement ofil -ill? the proper time opens said jaws, and permits pin d sleeve 1), arm 0, and collar Z to move to right or left with the said hub. Supposing the chuck has moved inward on the hollow spindle, and the wedge Y commences to move the chuck forward, at the commen'ceinentot this movementthc forked arm G and the collar Z are held back by a shoulder on' the innerjaw 0 until the jaws -i' L" ieot' the chuck have grasped the rod 1), when the movement of the slide A rehpases the arm C,when all move forward together. Then, as soon as thescrcw has been cutott from the rod, as'hcreinafter described, and the wedgeY is returning to its place, the spring 2 on the shaft X moves the ehuckinward on the hollow spindleagain. ,At the commencementof this iiiward movement the arm U and the collar Z are held statioi'ia'ry by the jaws c 0 until the 'aws 1T i i of the chuck are 0 ened bv thc pinsfin the-collarZ,"acting-through the buttons h, which lets' -ithe wire loose. Then the movement of the slide A opens the jaws c e, and the entire chuck, con'ipiehending collar Z and hub, moves back to its place on thespindle, ready for another gripe. The rod p, as it fed by the chuck \V, as above described, pas es through a bushing, m, and is received by the burrer a", which mills the body or shank, and then 'llics back into its place, leaving the rod in said bushing. 7

-Nothing being claimed on this bushing, I have, in the drawings, only indicated its position by dotted lines in Fig.1, it being held in,

place by a set-screw, as shown.

The horror n, Figs. 1, 3, reduces the diameter ot' the'rod to the proper size for the body ofthe screw, and so arranged that while operating it is secured in perfect line, but is entirely removed when tliedie is cutting the thread."

The burrcr a is placed in a swinging arni,

G, attached to a sliding shaft, H. Thisarni and shaftare at the proper time-turned toward the rod until a pin or projection .on the arm' strikes a guide-pin, 1), when. they are, moved inward toward the bushing, (that guides the rod beyond the chuck, Fig. 1,) the pin p"passi ng through a holein the upper end,

of the arm G. As soon as the burrer 1has per- 7 11 moves said shaft and arm outward from -.v the bushing until the arm has cleared the guide-pinp, when the arm smoved from before the bushing until again required. These formed its function a spring, 9", on the shaft 4 oioso therefrom by the sprin' carried by and revolving in bearings formed upon a carriage, L, the line of motion of this carriage being at right angles to the forward motioitof the rod.

Shaft K is so arranged with reference to revolution that it can be automatically locked or unlocked at any desired time, thus causing the die J to be held stationary or allowing it to revolve.

wheel, 8, and upon another shaft,,:r, parallel with K and similarly arranged, are two dogs or arms, each having on its under side'a catch or dog, t of, t being secured to the shaft w, and of such form that, when the carriage L is borne by the spring '31 on the shaft :0 under the stationary catch at, Fig. 1. At the same time the dog V, whichis free upon w,-'is drawn by spring w toward cog-wheel s, and its pl vint enters between the cogs and locks said wheel 8 and shaft K. I should say here that thecatches or dogs on t and o are so arranged relatively to each other that if t strikes on the top of a cog on 8 instead of striking between the cogs, then 1: will so enter between two or said cogsas to start the wheel forward or back, and permit t to enter freely between the cogs. Thus t and v serve together in looking said wheel a.

To unlock, there is upon 12 a hooklike projection, Fig. 3, that overhangs the part of it under the stationar catch d. The spring 10', attached to t, is so arranged that it draws i the above-mentioned part of t upward a little stronger than the spring to, attached to v,

draws it downward, so that when the thread is being formed by the die J, as the die moves forward, a flange on the right-hand side of sstrikes the dog on t, and causes the dogs t '0 to move forward with the shaft K, taking with them the shaft as, and when the thread --is cut up the desired length t isjust drawn,

Y I out from under. the catch d, and the arm of dog t, flying up, strikes the projection upon '0', and disconnects the ppintof '0 from the tooth of cog s that it was resting against, al lowingthe die J and shaft K to revolve.

Ehe difference of the intensity of the. springs tfand t preventswfronl dropping into coiiuctwith the teeth of) until the spring. upon t been overcome bythe elevation of This is performed in this manner; Upon shaft K there is firmly attached a cogthe opposite end of t, by means of the incline 0 the distance the thread is cut up,- the screwbody being determined by the length the catch (1 extends over t. m

In order to move the die J towaril the body or the screw, for the purpose of starting the thread, there is arranged a. sliding shaft, provided with a downward-projecting arm, N, to the lower end of which is attached another sliding shaft, P, Fig. 3, surrounded bya spring, 9, that presses M N P back from the hollow spindle. Now, when the die J is in proper line to receive a blank and locked, slide-bar A actuated by cam B causes the wedge 0,-

by pressing against arm N, to force the end of the shaft M against the rear end of shaft K and bear the die J upon the blank,- when the screw-thread is cut by the revolution of the rod. When the thread is cut the die J" revolves with the wire until the'parting-tool severs the wire, when the wedge O is withdrawn, and springs y 9 force the parts to resume their normal position-i. 0., as far back from the hollow spindle as possible. Die J now converted into acarrier, is, by motions of carriage L, positioned for the heading-tool. The head completed, it is passed to the saw which cuts the slot in the surface of the head, and thence to the screw-driver that removes the finished screw, thence back for another blank, these motions being all in one horizon- .tal line, and caused by cam B and slide-bar A", connected to carriage The parting-tool R, Figs. 1, 2, 3, separates the partially-formed screw from the rod (leaving a head the desired thickness) as soon as possible after the die has cut the thread and is revolving, R heingattached to standard S, fixed on the front end of slide-bar A, operated at the proper times by cam 13*, the operating end of R passing through a guide-pest, R Fi 1. t.

The header f, Figs. 1, fift'otates constant] y. When die J, carryinga screw, positions itself, f moves forward, shapes the head,-a-nd then moves back, allowing J to pass fart-heron. f is fixed to the end of shaft Tpparallel with, geared to, anddriven by hollow spindle Arm V, secured to shaft W, connects T and W, allowing T free revolution, hut causing T, V, and W to move toward die J, when the lower part of U is operated upon by wedge X, attached to slide-bar A, that is moved by can1. B spring K returningthe various parts upon withdrawing wedge X.

,The saw 70. Figs. 1, 2, 3,14, is circular, lll constant motion, and so placed thatit cuts the slot across the center-of the head as the screw is carried from 'the header; f to the screwdriver t, h is fixed on the vertical rhaftY, geared to the horizontal shaft Z, driven by header-shaft T. I

1' The screwdriver 1?, Figs. 1, 6,- 7,8, removes "the finished screw from die J, being so arranged that as the head of the screw, with the just out by the saw h, is carried toward it, the slot passes over the point of F, that is held stationary, parallel to and upon the same horizontal line as the blade of the saw h When the two centers coincide the screwdriver commences to revolve in the proper direction, moving back from die J at the same time. By the revolution of the screw-driver the screw is drawn outfrom the die J. and dropped, all finished, iilto a receptacle provided for it. '5 resumes it former state of rest until another screw is provided for its services. The motions are initiated and regulated as follows: i is inserted in the end of a horizontal shaft, 0 Arm D secured to shaft E connee-ts O and E allowing (1 free revolution, but causing G D E to move back from die J when the lower part of D is operated upon by wedge G, attached to slide-bar A?, that is moved by cam 13 spring in producing return motion when wedge G is being withdrawn. Revolution of shaft 0 at proper times is produced by gear H placed upon it and receiv ingconstant revolution from a gear upon the header-shaft. H has an inclined notch,.n Fig.7, in its center orifice.

In a longitudinal slot formed in an enlarged part of shaft 0 there is inserted a spring clutch-dog, 19, Figs. 6, 15, a spring, r pressing the tooth of'dog p into the notch n cans ing shaft 0 to revolve in unison with gear H To withdraw the teeth of dog 10 from gear H and stop the revolution of shaft (3 there is placed upon shaft E" a collar, 1, with a linger, 1 so arranged that t" can be swung to and from the shaft 0 and by bringing the point of finger t sufiiciently near to shaft G when it is revolving the shorter part of dog 10 comes around in contact with the inclined point of finger-t drawing the longer part from contact with gear H As 0 stops. the instant that dog is fairly withdrawn, lh'(C always stops very near the same point. In order to bring the point of the screw-drix'er into perfect position to receive the slot of the next screw,

part of a collar, L fixed to O, isfiattened, and the upper end of a lever, y,'(pivoted on the side of arm D is firmly pressed against the flattened portion ofL. In the same manner the finger t is swung toward the shaft 0, viz: Finger t and lever y, both prevented from swinging too far from C", have projections .9 below their centers that engage with books 1: and .rflattached to and moving with wedge G by connections J and K upon connection J there being a shoulder, 10, that, as the wedge Gr commences to move. for the purpose of drawing the screw-driver back from thedie J, swings the finger t clearof the dog 1)", allowing the screw-driver to revolve as desired.

Now, with the various parts of my improved screw-machine properly frame A, and the chuck W, with the jaws't', open back on the hollow spindle,.tube S is inserted into the hollow spindle E and the hooked end of the sliding shaftT dropped into the, groove Arod,11, having-ahook or other projection, r, Fig. 5, is introduced the proper assembled upon the distance through the tube S, collar 01., chuckijaws i, and bushing m. Power is applied to the pulley G, and the hollow spindle and its attachments commence to revolve. Upon handie P being locked the camshaft M commences farther off and away from the just formed screwbody.

The die J then advances and cuts the thread.

the proper distance in) the body of the screw,-

when dogs t e are thrown out, and the die is allowed-to revolve izi"nnison with the rod 1), receiving motion therefrom. erations have been taking place parting-tool R has been advancing and severing the red the proper distance from the body to form the head, and very shortly after the die coin mences to revolve the separation is effected. From this pointnntil the die is threading another screw there are two cycles of operations taking place. By one, the chuck, making retrograde motion, grasps and feeds forward another scrcw-length to the burring-tool. By the other, the die, retalning' t'lie partially-formed screw, carries it to the header f to have the \Vhile these op-' head formed as desired; then to the saw h,

projection 1' formed upon the rod p against the collar 11. in the hollow tube S, when S slides the shaft in the same direction that the rod is being fed, collars c moving arm V toward the fulcrum of lever B, detaching the hook upon R. from pin i, causing the cam-shaft M, by the operation before described, to come to rest, until the attendant has withdrawn the tube S,

rod 1), and

removed the short remainder of the introduced, as before, another rod. v .The advantages attendant upon my invention are many and important. It enables one attendant to operate several machines. The automatic stop prevents the short remainder from injuring the various operating parts of the machine should the attendant be absent or heedless. The revolution of the die produces a more perfect head, the use of the rod for that purpose producing that result in the simplest manner. The machine, being automatic, produces the best class of' screws and adds to the durability of the tools. "Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is--- 1. The combination of the hollow spindle E and the mechanism to revolve the same, the chuck .W. having; an elongated hub. mounted on said spindle and revolving with it, and

mechanismto more said chuck reciprocally and longitudinally upon said spindle to feed the wire at intervals through the spindle and to the SUl'CiV-llltlklllg tools, substantially as de scribed.

2. The combination, with the revohiblehollow spindle l') and the chuck \V, revolving with and lllUYillllU reciprocally thereon; as described, ot' the cutter ll and the sci-mv-cutting die J, arranged and operating substantially as set forth. E I o 3. The combination,with the revolubly ho-llow spindle E and the chuck \V, revol \"lllfl with and movable reciprocally thereon, as described, of a stop located in said spindle, and mechanism put in operation by the obstruction caused by said step, that disconnects the driving mechanism, causing the machine to cease its operations and to pern'iit the removal of theend of the exhausted wire or red and the inst:- tion ofa fresh wire or red, substantially as de scribed.

4. The combination, with the gearwheels K L and shaft II, of the bar and wedge I J N O, crank-rod It, and lever P, substantially as and for the purposes herein set forth.

5. The combination of the lever P, hooked lever Il-, r0d T, and mechanism to reciprocate the same, arm V, and springs 7., m, and w, all

. substantially as and for the purposes herein 3 5 set forth.

6. The combination of the rod T, by means of its book t, with the tube S, grooved and otherwise constructed as described, the tapering collar or plug nnvith'in said tube, the hooked rodp, and reciprocnting'jaws for gras' ing said rod and feeding it torward to the scre\v-makin;., instrun'ient, substantially as herein set forth.

7. The hollow spindle l1) and springs .r, m: chuck W, sliding "on said spindle over die springs and provided with elongated hub, grooved collar Z, pins buttons It, levers '0, andjaws i, all constructed and arranged to poses her in set forth.

operate substantially as and l'or the purl )S purposesliereiadeseribed.

operate substantially as and for the purposes herein set forth. z

10. The combination of the horror a, rocking arm G, shat't H, spring 1', and guide-pinp, all constructed and arranged as described, and operated by means of the wedges I I on the slide A substantiallyas and for the purposes herein set tlnth.

1.1. The combination of the die J, shaft K, spring y, reciprocating arriage L, shafts M and i, arm N, spring g, and reciprocating wedge 0', all substantially as and for the pur- 7o poses herein setforth.

l2. The combination,with the carriage L, shaft K, and springly, of the cog-wheel 8, dogs t and r, and their springs 2c, the gage d", and incline c to operate sub viantially as and. for the purposes herein set/forth. I

3. The combination, with the die J and chuck W, of the knife 1t, standard 8, and the rod 1), slide A, and cam and spring" 13, substantiallyas and for the purposes herein set forth. o

la. The combination of the header-f, shafts T and V, arm V, spring Ir ,reciprocating wedge X, spindle E, and the gear-wheels connecting shaft T with said spnnlle,-snbstantially as and for the pin-posesherein set forth. v

15. The combination of the sere\\"-driver"i shafts .0 E eonnee-ting-arm D springfgm o reciprocating wedge (l tzoq-wlieel lb, and the cog-wheel on the header-shalt. T, substani ially as and for the pin poses herein set forth.

16.- The combination of the reciprocating carriage L, die .l, mechanism for operating said die, as described, the vertical revolving shaft z/ and the horizontally-operating saw IL", substantially as and for the purposes hereim set forth. I

137. The combination of the screw-driver. I00

shaft (l cog-wheel il with notcl a, cogs p and spri r, the collar i pawl tpin .s", and reeiprmzating arm J with hook o and shoulder to", all substantially as and for the urlb. The combination of the collar IF, withff j-notch lever g fiiand recipro: ding arni' K ,withhnok.

all suhstantiallv'asand' l'oi tire mac is Gear-is.

Witnesses:

E. W. liwfronnAim, l". ILLMMPBELL.

all constructed and arranged f5 I

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