US264609A - Metal-screw machine - Google Patents

Description

(No1-nodal.) l whew-sheen l1.

' G'. D. BBLCHER.

METAL SCREW MAGHINE.

Patented Sept. l19, 1 882.

(No Medel.) 4 sheets-sheet 2.

G1 D. BELGHER.

METAL SCREW MAGHINE. I No. 264,609. l Petented Sepe. 19, 1882..

N. mais Pnmeumempner. wuhi mmmmm c.

(No Model.) 4 sheets-sheet s..

G.`D.BELCEEE.

METAL soEEw MACHINE. No. 264.609. Patented Sept..19,.1882.

l: P I' j,

fl .Q

N. PETERS. mio-Lithognpner. wa-hingmn. D. C.

METAL SCREW MAGEINE.

Patented Sept. 19, 1882.

N. Pneus. Pm'vmhugnph". wnhmgum. n. c

UNITED STATES' IPrvrENT OFFICE.

y GEORGE D. BELGHER, OF CHICOPEE, MASSACHUSETTS.

METAL-SCREW MACHINE.

SPECIFICATION forming part of Letters Patent No .264,609, dated September 19, 1882.

Application filed April 14, 1882. (No model.)

To all whom it may concern Be it known that I, GEORGE D. BELCIER, a 'citizen of the United States, residing at Chicopee, in the countyof Hampden and State ot' Massachusetts, have'invented new and use'- ful Improvements in Metal-Screw Machines,-

of which the following is a specification.

The nature of my invention consists in the construction and arrangement of a screw-machine, as will be hereinafter more fully set f'orth. r

In the drawings, FigureI is a planview of the upper part ot' mygmachine. Fig. `Il isa plan view in partial section, showingmechanism fully disclosed by the removal ot' some of' the upper portions of the machine. Fig. III is a sectional elevation on the line 9 9 of Fig. I. Fig. IV isa reversed-end elevation in section on line 8 8 of Fig. I. Fig. V is an enlarged longitudinal section ot' a chuck with a portion of the operating mechanism. Fig. VI

'is a detail view of a portion of the. chuck. Fig.

VII is an enlarged longitudinal elevation of oneV of the tool-holders with the threading-die therein, and Fig. VIII lis a detail in sectional elevation on line y y of Fig. II.

A is the frame of the machine, constructed in any suitable way to afford the required bearings for all of the movable portions of its mechanism.

I is a belt-pulley, by vwhich motion is im-` 4parted to all of the movable parts.

The p'ulley I, provided with the gear m', is mounted on the horizontalshaft 3 at one end of the machine, and through the 'beveled gears (i and imparts motion through a worm-gear upon the vertical shaft of gear 5 to worin-wheel' J upon shaft E. This worm-gearis indicated bydotted lines in Figs. I and 1I, and as it is common to so connect feed and other shafts with that of the driving-pulley no further illustration is thought necessary. The gear m of pulley I engages with the equal and connected gears S, T, U, and W upon bearings in the trame parallel to those ot' shaft 3'.' The gears S I U W give the proper rotary motion to the spinthose through which the rod from which the` screw is formed is fed, and prov-ided with the chuck forholding and releasing the rod at the proper time, rests longitudinallyin bearings in the frame, and forms the shaft of gear S.

The spindle N forms the shaft of gear U, and carries upon one end the tool for shaving the burr from the slotted head of the screw. It also carries the gear n for operating, through corresponding gear, n', and shaft n", the saw w" for slotting the head of the screw before it is submitted to the shaving-tool. The gear W, forming the last of the train of' connected gearing in the same horizontal plane, has the spindle 0 for its bearing, and alternately rotates it and revolves free upon it, as herein after described. The gear T, intermediate in the train to the cries S and U, causes the spindies MNto revolve in the same direction. The spindle O moves in the reverse direction to its "contiguous spindle, N. .The saw af" occupies ayposition intermediate to the spindles M N and in the space in prolongation of gear T. The ends of the spindles and the cuttingedge of the saw are approximately in a line in the 4same plane.

The shaft E, driven by gear J upon one of its ends, las before described, extends longitudinally through the frame in bearings therein, and its position is below the spindles M N O and at or near the transverse center of the frame. l The shaftE thus centrally located, and in operative connection with gear in upon pulley I, forms the shaft for carrying allot' the cams, which, with the train of gearing above described, produce all of the consecutive motions needcd to automatically make the screw.

The cams upon shaft E are the cams J J- upon gear J, as shown in Figs. I and II, the cam-wheel Y, as shown inAFigs. 1I and III, arranged upon its shaft beneath the spindles M N O, and the cam-wheel Q upon the opposite extremity to the one J. lhese cams opera-tethe following connections: Thecams J J reciprocate rod j, sliding in the frame parallel to spindle O, by acting on alternate sides ot' the cam-block on its end,'to, through the arm s, rigid therewith, causev spindle O to be clutched with gear W. The clutch is formed by the pin u on stem t and pin o ougear W.

IOO

The stem t is fr ee to slide within the spindle arm s when connected with the gear. In thus clutching gear W and spindle O the rodj simultaneously moves sleeve r, by means ot' arm l, to close thejaws ot' chuck O.

The cam Y, by means of the projection rv, swings the end of' spring-lever hinged to the frame, as shown in Fig. III, to cause the cutting-off tool .r to be brought against the screw in the chuck of spindle M. The cam Y also reciprocates screw D to govern the position of the toolholders B G relative to the spindles M N O and saw a".

rlhe screw D is provided with one or more quick'lands or grooves, and has rigidly attached to it the armsi 7:, as shown in Figs. II and VIII. The arm k forms a cam-block to cause the screw D to be reciprocated by cam Y, and the arm 1T, by being sleeved to follow on the rod t', secured in the frame and parallel to screw D, prevents the screw D from rotating in being reciprocated. rlhe screw D, moving loosely in its supports in and from the frame, has an axial nut in 'the gear C', held in place by lugs from the frame A, as shown in Fig. II, so that the reciprocation of the screw D will canse the gear C a movement in one direction and an equal one in the reverse.

Upon each side of wheel G', and extending transversely across the frame, are waysV V, upon which rest and movethe tool-holders B C.

Attached to the holder C, and arranged to extend between the ways V V and to come immediately over and engage with gear C', is the rack c, by means of which it will be seen the longitudinal reciprocation of screw D is, through wheel C', converted into a transverse reeiprocation ot' tool-holder C.

Upon the ways V V, upon the opposite side of holder G from wheel C', is the holder B, held, as shown, by spring d, bearing upon one side, to bear in turn upon the stop a from the ways V V.

As shown in Fig. I, the stop a is received within a slot, b, through the bottom of'theholder, and a similar slot, c', is formed in the correspondingopposite edge ofholder C, by which, while the stop ay brings the holder B in the proper position relative to spindle M, the holder C can push the one B away to take its place opposite to the same spindle. The spring` d returns holder B when said holder is released by holder C. Holder C is provided with a combined reciprocating and iutermittingly-revolving die, X, and holder B with a reciprocating tool, lt, for forming the head of the screw. Both die X and tool It have bearings in the holders, and extend across them to have their ends upon one side come opposite to and in the same plane with lthe spindles and cutting-edge ofthe saw,while their ends upon the other side ot' the holders are constructed and arranged to be acted on by suitable reciprocating mechanism. Both toolsare also provided with springs, as shown in Fig.I,to retractthem to the holder when released. The die X has upon its stem the coil-spring e', bearing between an inner holder G. The end ot' each tooth upon the v ratchet-wheel toward the pawl is beveled, and the end of pawl z is correspondingly beveled to cause the wheel, when returned to the pawl, to at once become fast with it, the pawl passing between two teeth instead of riding or chattering for a short distance. By means ofthis construction ot'die a single stem, spring, and ratchetwheel, in connection with the pawl, constitute all of the mechanism needed to permit the die to revolve with the screw when being cut ol'and makeitt'ast with the holder again, the elongated ratchet permitting deX to have its needed reciprocations in slotting, shaving, and having the screw removed 'rom the die. The cam-wheel Q operates, by means ofcam-blocks q, sliding through the wall ot' the frame, as shown in Figs. I, II, and IV, the levers FG II L, to cause them at the proper time to move the tools in the holders B C. lhe ends of these levers are hung upon the transverse rod P, and are provided with springs to cause them to l'ol' low, through the blocks q, the cams upon wheel Q. The levers come in contact .with the enlarged rear ends ofthe tools in the holders.

Without a departure from the principle ot this invention, the rear end of the stem of die X may be provided with a cross-head, which would enable one or more of the levers to be dispensed with by providing a surface against which one lever could act when the holder C was in difterent positions. The cam Q also reciprocates the rodfto, through arm g and sleeve h, automatically operate the chuck upon spindle M.

To throw the driving-pulley out ofoperative connection with cam-driving gear J, a stem, 3, provided with adog, 2, moving in a slot in shaft 3', passes through the sleeve ot' gear o', and has arranged upon it a coil-spring, 4, to bear between a shoulder upon the stem 3 and the end of the sleeve, by means of which the dog can be pushed to disengage wheel 6 from shaft 3 and render wheel o' inoperative.

The chucks shown in this machine are, as seen in enlarged views, Figs. V and VI, ot' peculiar construction, in having the wedges 1r w entirely detached from the rest of the chuck, in place of being hinged at their rear ends, as is common, by which form they have their fulcrums movable and 'adjustable by the position given the screw-sleeve w. lhus by the movement of sleeve w engaging the projecting ends ofthe wedges above the surface ot the chuck in the groove ot' its inner surface, said projections can be held to canse said wedges to bear upon their extreme rear corners to produce an increase of leverage to be overcome by the sliding sleeve r for bearing them against the jaws of the, chuck, and through the curved lOO IIO

bearing-surface ot` the.` wedges the sleeve to can be advanced to throw the fulcrums ot1 said .wedges to a point much farther forward.

The automatic operation of the mechanism herein described in making screws is as follows: Therod from which the screw is formed and detached, being fed through spindleM by the feed device common to screw-machines, is reduced to leave the head bythe'tool R in ro holder B, through the action ot' lever F, pro

duced by cam Q through block q. At the time this is accomplished and the tool B. retracted by its spring upon its release by lever F-the holder (l is moved to come in contact with holder B to push it away and take its place with its dieX opposite tothe end of the blank in spindle M, and in a prolongation of its axis, this position being determined by the stop a. When die X is thus .in the proper positiouhit zo is moved by lever F to cut the thread upon the blank. A The tool .fr is swung by projection x on cam Y to cut the screw olf. During the interval of time between the cutting of the thread and the cutting oif of the screw, the die X is revolving` with the screw, and continues to revolve until the cutting off of the screw releases it to ly back with thetscrew to bring the ratchet yunder the pawl a. The holder O, With the screw in the die X, is then moved to aposition opposite sawa, and the die is pushed forward by lever G to have the t slot in the head of the screw cut, the holder being held in exact place by the spring-datent 'e falling into the depression m. The detent c and depression m are sufficient to steady the holder and bring it into exact position without opposing an obstacle. to the movement of the holder by its driving-wheel. The holderl C isVr next moved to have the screw-head shaved by tool in spindle N, and is vthen finally moved oppositeto spindle O to have'die X, with the completed screw, advanced'to insert the head of the screw in the open jaws ot' the chuckin spindle O. Thejaws ot' the chuck are at once closed and the spindle O put into motion to unscrew the screw from the die, after which thejaws are opened to drop the screw, the revolving movement of the spindle heilig simultaneously stopped by the movement of rodj by cam J.V As theholderC moves from opposite to spindle M the holder B, propelled by its spring, takespits place simultaneously with the releaseby rod-f of the chuck ot' spindle M to permit the feed 'ol' another length of rod to' be operated upon by the screw-forming tools. Thus while holder Cv is completing and depositing the screw, holder B is commencing another, and direct movement is only impartcd to one ioolholder to cause the screw-to be 6o begun,iinished,anddepositedduringonetransfthe holder C in one direction, and the reverse, lasno clutch or shippingdcvice for operating beltsupon pulleys could possibly do.

The machine thus constructed and with its parts so arranged and operating forms' a complete automatic screw-inachine,in vcompact* `operatively connected with pulley I to advance said-tool R against the blank in the chuck, substantially as shown and described.

2. The combination of spindle-M, holder B, ways V V, spring d, stop a, holder C, and the mechanism adapted to move said holder -upon the ways to cause it to displace holder B; and be held withits die X in prolongation ot' -the blank in spindle M, as shown and described.

3. The combination, in a screw-m achine,with holder C and screw-bearing die X, and mechanism, substantially as shown, for reciprocating the die in the holder and preventing it from revolving meanwhile, ofthe ch uckspindle 0, reciprocating rod j, having shipping-arms s l, connected respectively to rod t, sleeved within the spindle, and Vto chuck-operating sleever upon it, and the gear W, arranged upon spindle 0, and adapted to be by the movement of rod j clutched to the spindle O simultaneously with the closingof the jaws ot' the chuck, and released from the spindle npon the opening of said chuck-jaws, all arranged to operate i'or the purpose set forth.

. 4. In a`sctewmachinc, the combination,with the cutting-od' tool x, saw n", and spindles Ml N O, all arranged as shown, of holders B and '0, recessed respectively at b c', stop a, spring d, tools R x, and mechanism, as shown and described, for moving holder l upon the ways .V V and reciprocating the tools B w in the holders.

' 5. Ina screw-machine, the colnbination,with the horizontally-arranged spindles M N 0, and gearing MHS, T, U, and W, and with camshaft E in "operative connection therewith through intermediate gearing, and arranged centrally in frame A below said spindles, of cams J', J, and Q, arranged upon the shaft E, and shipper-rodsjf, arranged wit-hin the frame upon each side ofthe spindles.

6. The combination, with shai't E, arranged and operated as shown and described, and with cam Q thereon, and with holders B O and their tools 1t a2, of levers F Gr L, bearing P, and blocks q, for the purpose as shown and described. I

7. Lhe combination,inascrew-machine,with quick screw D, supported in the frame A, and splined toy move thereinwithont turning and IOO IIO.

reciproca-ted by suit-able mechanism, of the 4 nut-gear G', held by means from the frame and with sleeve i' and sleeve 10'; having u frolnsliding on screw D, und tool-holder C,pro groove upon its inner surface, of the detached vided with rack c, as :1nd for the purpose set Wedges w 10, adapted to bear, as shown` upon l'orth. the jaws through sleeve r, and he adjusted, 15

S. Inn screw-machine,theco1nhination,\\ith through the movement of sleeve w', against die X and holder C, of the elongated corrutheir projecting corners7 as seb forth.

gated wheely, coil-spring z', arranged upon GEORGE Il BELCHE L the stein ot die und paw] c, arranged upon the holder in prolongation ofthe corrngnlions Witnesses:

WM. II. CHArIN.

| xo upon wheel y', :1s und for he purpose Sety forth. i l. S. HYDE, l

il. The. comhinutiolnwith thejuws ol'n chuck l

Images