US811411A - Bolt-machine. - Google Patents

Description

No. 811,411. PATENSFED 11111.30, 19061. 1

J. K. KUONS.

BOLT MAUHINE.. APPLIUATION FILED 00T. 5.. 1904.

11111111 111 1 11111111111 E 1 11111111 1111111111111111111111111 1, 1151111111115111 11|11|1111|1111l5 1 1111111111111. .111111111111111 11111111111111111111111111111111111111111111| 1 wn 1, 11|1|1|1||||m1l11|1|1||1|111111111111\ la .Arron/vifs ATTORNEYS PATENTED JAN. 3o, 1906. J. K. KooNs.- BOLT MACHINE. APPLIUTIUI FILED 00T. 5,1904.

No. 811,411. PATENTBD JAN. 30, 1906. J. K. KOONS. BOLT MACHINE.

APPLIoATIoN FILED 00T. 5,1904.

4 SHEETS-SHEET a.

ATTORNEYS 6. 0 9 l 0 3 N. A J D E T N E T A D..

.E. sm wH 0G KA .M u J0 B 1 .AN l IL 8 M N APPLICATION FILED 00T. 5,1904.

4 SHEETS-SHEET 4,

ATTORNEYS sis nnirnn STATES PATENT onnron.

Josnil'n KENNARD KooNs, or MoNTeoMEnY, PENNSYLVAMA. s

BOLT-MACHINE.-

Specification of Letters Patent.

` Patented Jan. so, .1906.

To all! `whom `it may concern/,.-

Be it known that I, JOSEPH KENNARD KOONS, a citizen of the United States, residing at Montgomery, in the count of Lycoming and State of Penns lvania, ave made certain new and useful7 Bolt-Machinesof which the following is a specification.

My invention is a machine for use in mak-'- ing bolts, set-screws, and the like g. and the invention consists in certain novel construc-l tions and combinationsof parts, `as will be hereinafter described and claimed.

In the drawings, Figure 1 is a to plan view, and Fi 2 is a front elevation,o a Inachine embo in' m invention.k Fi .3 is a vertical longitu ina section thereo drawn alongside the'feed-screw and the main shaft.

Fig. 4 is across-section on about line 4 4 of Fig. 3. Fig. 5 isl a detail perspective view showing the devices," for turning the stock down and for cutting the thread thereon.

Fig. 6 is a cross-section on. about line 6 6 of Fig. 3. Fig. 7 is a cross-section on about line `7 7 of Fi 3. lFig. 8 is a detail longitudinal section o one of the tubes of the ripping? blocks and devices for .operating t e same -for holding the stock-rod against longitudinal movement. Fig. 9 is a cross -section on about line 9 9 of Fig. 8. Fig. l0 is a -side view,.a-nd Fi 11 is an elevation, of the inner side of one o the gri ping-blocks. Fig. 12 is a detail elevation o the device for holding the stock-rods and for feeding the same longitudinally. Fig. 13 is a .cross-section on about line 13 13 of Fi 12. Fig. 14 is a cross-section ,on about lgine 14 14 of Fig. 13. Fig. 15 is an elevation ,of the device for throwing the nut-sections into and out of mesh with the feed-screw. Fig. 16 is a' detail cross-section showing the sectional construe* [Iarts of the cutting-off tool detached, and' ig. 22 is a detail perspective view of the cuttin -of`r` tool with the parts assembled. l

y my invention I provide, in connectlon with a main shaft A and a frame having slides B, along\which lsome of the movable Improvements in.

l' parts are arranged to slide, devices fol' ifeld` ing the stock-rods C, from which the bolts are c'ut, forwardly to the tools for turning. down such stock-rods and for threading the same and devices for cutting ofi the stockrods after the same havebeen formed` into the bolts or set-screws, as will be'described.

The lshaft A. may be turned by any suitlable gearing, preferably bygearing similar to that of a lathe and not shown herein because it forms no part oi the present invention.` 4 The tool-head D, cariying devices for turning downthe. stock-ro s and for threading the same, has a base D ,"sliding along the frame-slides B, and which may be moved along said slides by suitable carin as best shown inFig.` 4, with a rack on t e frame. Such gearing may be of suitable construction and mag be operated from a hand-crank d to move t e head D back and forth alon the frame. This tool-head D includes a body D2 and end plates D3 and D4, which extend out- Wardly beyond the body D2 and have openu ings at d3, in which turn the shafts D5, carrying the cutters D" and D7,fwhich are arran ed eccentrically to the shaft D5 and are carried by a cutter head or disk DB at one end of said shaft and Working against the inner face of the head D. The cutter DG may be similar to that of an ordinary bolt-mill or box-tool adapted to turn down the rod to the desired diameter, While the cutterD7 is an yordinary thread-cutting die, and these cutters D6 and D7 are sc cured in suitable sockets d in the head Ds and maybe secured therein by clamping .screws d?, Aas will be understood from Fig. 5 of the drawings. 4At the end o posite the diskD", with its cutters D and 7, the shaft D5 is' rovided with apinion D, which by means o suitable gearing coperates in turning the shaft DE to set the tool D6 or the tool D7 into alinement with the stock-rod, accordingas it is desired to turn said rod down to size or to thread the turned-down rod after the turning-down operation has nbeen completed. l In the construction shown the several shafts D5, of which .any suitable number may be employed,'ac cording to the ca ac'ity of the machine, are 4arranged in a-circ e, and their severalpinions D are meshed b a4 ear-E, .keyed to a handle -sleeve' E', t e Fatter being preferably keyed at eto the hub e of the gear E and the 'said sleeve-being provided on its irmerend with a. projecting pin E? toenterone or the bolt.

other of two sockets e in the outer face of the stock, as best shown in Figs. 3 and 4 of the drawings.- The handle-sleeve E', with the in E, may be moved in the .direction of ength of the'shaft A back from the position shown in Fig. 3 to a suflicient extent to free the pin E* from the sockets e* without moving the gear E out of mesh with the pinions D, and when the sleeve E has been retracted to such extent it may be turned to turn'the ear E to rotate the inions D9 and the shafts 5 to bring either t e cutters D or D1 into alinement with the stock-rods and then be locked in such position by releasing the sleeve E and permittingthe pin E to enter the registering socket e2, a spring E3 being arranged to normall press the sleeve to the position shown in one or the otherof the sockets c, as will be understood from Figs. 3 and 4 of the drawings.

As shown in Fig. 3, the s ring E3 fits at one end within the outer end o the handle-sleeve E and abuts at its other end against a collar E4, which may be adjusted along the shaft' A and secured 1n any desired position by the set-screw e4, as will be understood from Fig. 3 of the drawings'.

In operation when the stock-rods have been fed forward to the desired position the tool D, having its turning-down tools D set into alinement With said rods,may be moved forward u on the rods, the latter being rotated by t edevices presently described to turn the rods down to the desired form of The tool D may then be retracted and .the devices E and E operated to adjust the thread-cutting dies D7 into alinement with the turned-down bolt-blanks and the cutterhead be again fed forward upon the revolving rods to thread the same as desired. The formed bolt or set-screw will then be cut oil' by the devices which will be described.

The feed-screw F is supported `at one end in a bearing f', which may be mounted on a suitable standard, as shown in Fig. 2, and is driven by means of a friction-couplin arranged at its other end from the vsha A.

, This coupling-is shown in detail in Fig. -3 and includes a socket-section G, secured'at g to the end of the shaft A and provided at o ne end of the sleeve G, the latter being provided at its other end with a tapered socket G', and

the plug-section H keyed at h to the inner end of the screw F and movable alon but turning with the ,said screw, a spring H" eing arranged to press the plug H normall into feed with the socketed sleeve the said spring H bearing at its outer end against a' collar H, which may be adjusted along the feed-screw and secured in any desired adjustment .by the screw h in order to ad'ust the tension of the spring H to the' desired degree. Normally the spring H presses the plug H intoA driving contact with the sleeve ig. 3 to cause the pin Ezto enter' G, and said plug ma be released by devices operating upon a dis or Iplate I, which" journals at I upon the plug so the :latter may turn freely within the late I', the latter having guide-openings at 2 for the stock-rods C and being also provided With push-rods I3, threaded at 3 into the plate I, so they may be adjusted in connection therewith, the said push-rods I3 extending from the couplingplate I toward the head D and being arran ed to be pushed u on by devices present y described in ordler to disengage the plug H from the sleeve G in the o eration of the machine as presently describe The feed-screw and main shaft, it will be noticed, are in alinement, greatly simplifyin the construction of the frame, and the ring Ig, operated by the ush-rods I3, is concentric with the said fee -screws and main shaft, as-

Will be understood from the drawings.

The stock-rods C are held to'a carrier J, preferably by means of screws J and the rods extend from the said carrier J through the plate I, thence through guide-tubes K and the rod-clamping devices coperating with said tubes K, and project through the cutting-0H devices L in passin through the cutter-head or disk D8, by W 'ch they are turned down and threaded in forming the bolts. Q

The carrier J is of a special construction and comprises the body or main plate J 2 having the central tubular portion or thimble J 3, sliding along thefeed-screw F, and the outer tubular ortion J4, surrounding the central portion 3 and receiving the reduced portions 5 .of sleeves J, in which sleeves the stock- -rods C are clamped by the screws J', the

sleeves J being provided with annular grooves in which project the inner ends of screws J7, by which the sleeves J6 are secured in the outer tubes J* and may be turned freely therein as the stock-rods are rotated in the operation of the invention. By this means the carrier ma o erate to feed the stock-rods C longitu ina lywithout interferin with the rotation of the stock-rods by the evices presently described. The carrier isv provided with a split nut composed of sections M, threaded to en age the screw F and which may be adjute into mesh with the said screw, as shown in Fig. 13, or outwardly out of mesh with said screw when de- IOO IOS

IIO

fromV the ositioii shown in Fi 15.) the pins M, traveling in the slotsM, wi free the nutsections M from the screw F. In case the o erator should fail to `release the nut-sections after the carrier has been fed along. the screw F to its full extent I form said screw with its threads tapering out at f, (see Figs.

1, 2, and 3,) so that as the split nuit reachesthe limit of its movement it will be opened by the tapered portion of the feed-screw at f to prevent any jamming of the parts.

The guide-tubes If are journaled and turn in a frame N, mounted'on the main frame of the machine, said frame N bein preferably provided with end plates N an the guidetubes K, having a shoulder K bearing against the outer side of one end plate N and a nut K2 bearing against the outer side of the other end plate N, so the said tubes will be held against lengthwise movement and are free to turn on the said plates N of the frame N, as will be understood from Fig. 340i the drawings. Tliese guide-tubes K have bores, preferably circular, through which the stock-rods ass, and on the said tubes K, I ke. pinions 3, which are meshed by a inion ori-the shaft A so the said shaft wil turn the guidetubes K and will thereb turn the stock-rods C when the latter are c amped to the guidetubes K by the means presently described.

The guide-tubes K are provided beyond the shoulder K with an external] -threaded portion K4, preferably slotted at 5 to receive the ggp -blocks O, which roject in the slots 5 an are therebykeyed) to turn with the tube K, as will be understood from Fig. 9

of the drawings. These gripping-blocks O are normally pressed apart by springs O', arranged as shown in Figs. 8, 9, and 10, and are inclined at their o osite ends at 02 to engage at oneV end wit inclined bearings at P 1n the guide-tube K and at their other ends with the inner tapered ends P of plugs P, which lugs are threaded into the outer ends ofthe t eaded sleeves Q, which are threaded at one end onto the threaded extension K4 of the tubes K and receive the plugs P in their other or outer ends, as best shown in Fig. 8 of the drawings. ',When these 4nuts Q are screwed from the position shown in Fig. 8 onto the threaded extension K4 of the tube K, they travel to the left, or toward the shoulder K and as they so travel they carry'the screwplugs P with them, and thereby o erate to compress the 'pping-blocks O by t e action of the tapereilnner ends of the plugs P and the tapered surfaces at 02 u on the inclined ends of the said understood from ig. 8 o the drawings.

For purposes of adjustment I prefer to use the screw-plugs P in 'securing the tapered surfaces P for engagement with the outer tapered ends of the gripping-blocks O. In order to turn the screws Q to cause them to travel along the threaded extension K'1L in one Igrippin -b ocks, as Will be' direction or the other, I provide said nuts' Q with pinions Q', which mesh with the internal teeth R of a gear R, the latter rbein preferably made in sections, as shown in' 1g. 6, for convenience in assembling and bein provided on opposite sides of the teeth R with the4 face plates or rings R, which project inwardly on opposite sides of the imons Q so the ear-wheel R will be caused to travel in the irection of len th of the tubes K as the nuts fscrew on an off the extensions K4 of the tu es K. The purpose of this is not only to retain the pinions Q in mesh with the gear R, but also to cause the said gear R as it aproaches the frame N in moving to the left om the position shown in Fig. 3 to strike the free ends of the push-rods I3 and throu h said push-rods free the plug-section I-I of t e friction-cou ling from engagement with the isection G of) said coupling, which latter se'ction is secured to the shaft A, While the plugsection is keyed to the feed-screw F, as before described. Ordinarily the nuts Q willl revolve with their respective ide-tubes K, and as they so revolve they wi turn thegear R with them, the said gear R being normally free to revolve.4 If, however, the ear R be held from turnin the nuts Q will e locked from turning on t e threaded extension K4 of the revolving tubes K, and the said nuts will be caused to travel along the threaded extensions K* as the carrier-tubes are revolved, and as the nuts travel to the left from the position shown in Figs. 3 and 8 they will oper- `ate upon the grip ing-blocks to press the same inwardly an cause them to grip the loo stock-rods and hold the said rods against l being provided in their inner acesA with angular grooves O3 to receive the corners of the angular stock-rods, as will be understood from Fig. 9. Thus in this operation it will be noticed that if the ear R be locked from turning such gear wi then `prevent the nuts Q from turning with the guide-tubes K and the nuts and gear R will be caused to 4travel to the left from the position shown in Fig. 3, and this movement of the nuts Q tothe left will operate to clamp the stock-rods against endwise movement and will also operate to IIO move the gear R to the left and causing said ear R to strike the free ends of the ush-rods 3 will push the coupling-section] out of enga ement with the section G, and so sto the eed-screw from feeding thev stock-ro s into the'machine. I thus provide for locking the stock-rods wagainst endwise movement without interfering with the revolution v S, encircling the sai gear gaged by a lever S3, pivoted at S4 and arranged to e swung to the position shown 1n Fig. 6 to clamp the band S upon the gear R to klock the latter from turning, the lever S3 being carried 5 by abracket S from the bed-frame, as shown in Fi 6 of the drawings. After the stockrods ave been fed to the desired osition the parts may be o erated, as before escribed, to clamp the sai rods a ainst endwise movement through the gui ing-tubes and to detach the feed-screw from the main shaft, af-

. ter which the projecting ends of the stockrods may be operated upon by the tools before described to turn down the shanks of the bolts and thread the same as desired, after which the bolts may be cut off from the stockrods and the machine be operated to feed new lengths of the stock-rods in position to be operated on and the o eration repeated from time to time. In eeding new lengths .of stockfrods to position for turning down and threading' the locking device S should be clamped upon the gear R and the shaft A be driven in the reverse direction to cause the nuts Q to travel back to the position shown in Fig. 3, thus releasing the blocks O from grippmg contact with-the stock-rods and readjusting the friction-.clutch to connect the feed-screw with the shaft A, when the feedscrew will, through the carrier J, feed the rods forward. as desired.

After the stock-rods have been fed forward and o rated upon by the turning down and Ithrea g tools the cut-off devices are operated to cut the bolt-fromthe stock-rod. These devices include, as shown, the toolsV T, the tool-carrying plate U, and the camlate V.

The tool-plate U is in the form of a 'sk vsuprted on standards U', rising from the bedame and provided with inwardly-projecting lugs U, entering slots in the ed es of the plate U, as shown in Fig. 17, so t e plate U will be held from turning and yet wi l move along the lugs U2 in the direction of the shaft A. The purpose of this is to enable the tools to be set forward or toward the head D when it is desired to em loy the cutting-off tools for shaping down t e throats of the set-screws when the machine is used for making set-screws, the toollate and its tools being moved back and forth) by the means presently described. The lateQls provided Wlth openings tnrou h whic the stock-rods project and with bustliings U3 in said openings and fitting the rods, so therods will turn freely in the tool-plates U. The cutting-off tool T is held in suitable guides on-the plate Ufso they may be moved toward and from the res ective openings for the passage of the stoc rods, as shown in Fig. l19, and may be moved by the means resently described. To` this end the tools T are rovided at one side with projecting studs Tl, which extend through the slots U4L inthe plate U and thence ,into cam-slots V in the tool-setting plate V, so as the said plate V is turned the tools will be caused to travel toward and from the stock-rods. The4 plate V turns Von the shaft A, being provided in its edges -with recesses V2, receiving the lu s U, and has a projecting hub V3, provid with groove V, receiving a yoke V5 on a lever V, which is pivoted at V7 at one end and connected at its other end with a hand-lever Vs, havin a tool V', entering datent-sockets V1, by whlch to hold the lever Vs and the cutting devices in position to form a throat on a setscrew or to cut off the finished set-screw or bolt 'as may be desired. It will be noticed the slots Vz permit the turnin of the plate V and the slots in the plate receiving the lugs U2, permit the travel of said plates U along the lugs U2 in adjusting the cutting devices back and forth.

The plate V is provided with worm-teeth V, which mesh with the worm V12 on the worm-shaft V13, Vthe latter turning in slotted bearings V14 in the standards U', so the shaft may travel back and forth with the plate V, being carried bv means of the bars V,L secured at V16 to the cam-plate V and slotted at their lower ends at V17 to receive the shaft V1s and ermit the turning of said shaft in the bars 5 and the movement of the said bars along the shaft V as the cam- .late is turned.

The shaft V13 may be turne With a handcrank V1s or by the worm-wheel V19 from the feed shaft B, the worm wheel V1 being loose on the shaft V13 and a clamping-nut V being provided for clamping the worm-wheel to the shaft when desired. By this means the worm-shaft V13 may be operated by hand or b power as desired.

T e tool T is preferabl made of the main or intermediate section and the side sections Tz and T3. The section T has a threaded openin t to receive the screw-stem t' of the stud the main section T*L has a slot t* for the passage of such stem, and the section T3 has a rabbeted openin ta or the passage of the shank t', as shown ini 20 and 21. By the described construction e tool T may be adjusted to set the intermediate section farther forward or back, as may be desired, and

the stud T may operate as the clamping means for securing the tool-.sections in any desired adjustment. The tools T slide in grooves U4 in the tool-plate U3 and are held in said grooves by the cap-plates or slides U, whose inner sides are grooved at U to receive the outer faces of the tool, the said capplate U being held by stop pins U and guided by the rails U", secured by the screws U7. By this construction the tools are securely held in place, so lthey may freely move back and forth, as desired. s

The cap-plate is a cover and guard for the cutter and is held slidably in the guide-rails U, so they can be removed whenever it is desired to apply or remove the cutters.

The cutting ends of the Sections T, T", and

T of the tool T are formed as best shown in Figs. 19, 21, and 22.

n the operation of the described construction the stock-rods mav be fed forward b the carrier J ,operate u on by the fee screw F. When the desire length of rod has been fed through the guide-tubes K to ject beyond .the said guide-tubes, the hold-y clamping contact with t e stoc -rods to pre-l ing device or brake S 1s applied to the gearwheel R and thenuts Q are caused to travel back on the threaded extensions K of the tubes K, setting the lppin -blocks into vent the same from further endwise movement and the ear R simultaneously uncoupling the fee -screw from the drive-shaft.

The head D is then fed forward upon the revolvin ends of the stock-rods, first toturn 'the sald rods down to the desired size and scribe then adjusted'and fed upon such turneddown ends of the stock-rods to thread the bolts, the ends of the rods entering lon 'tudi- 4cutting-off devices are adjusted, as before deto cut off the bolts .from the body of th stock-rods.

aving thus described my invention,what I claim as new, and desire to secure by Letters Patent, is-

"1. The combination substantially as herein described, of the framing, a carrier for the stock-rods, means for revolving the stockrods, a feed-screw operatin upon the carrier, a drive-shaft and couplingetween the shaft and screw, devices for holding the stock-rods .against endwise movement, means for operating thel said holding devices, and devices operated` by said means for releasing the coupling' between the shaft and feed-screw.

2. The combination of the tool-head, cutter-heads provided with tools and with shafts journaled in the tool-head, the inions on said shafts, the gear meshing Wit said pinions and means for turning said gear and for locking it in its different positions. 4

3. The combination with the tool-head, and the cutter-heads -`each having eccentricallyarranged cutters and provided with shafts journaled in the tool-head, of the pinions on the'said shafts, the gear meshing -with said pinions, the sleeve slidably keyed to `the said gear and arranged to operate the same, and a pin carried by the sleeve and arranged to engage a relatively fixed part whereby to lock the gear in its different positions, substantially as setforth.

4. The combination in a machine substantially as described, of the cutting-01T tools, a.

pro-l the tool-plate along the standards substantially as set forth. I

0 5. The combination in a machine substantially as described, of the feed-screw, a stock- `carrierarranged to be fed by said screw, t'he mam `shaft a coupling between the main shaft and the feed-screw, clamps for holding the stock-rods fromlongitudinal movement, means for forcing said clamps into engagement with the stock-rods and intermediate devlces between the means for operatin the clamps and` the coupling between the eedscrew and lmain shaft, substantially as -set forth. I

6. The combination in a machine substantlall as described, of the framing, the main sha t, the rotatableguide-tubes for the stock-l rods, gri ping-blocks in said tubes, nuts turnmg on t e tubes and arranged Yto compress the blocks upon the stock-rods, means for turning said nuts into and out of position to compress the gripping-blocks, a carrier for the stock-rods, afeeder for said carrier and intermediate devices between the nuts and the feeder for the carrier whereby the feeder may Abe thrown out of operation when the .nuts are adjusted to position to compress the grip:

,ping-blocks, substantiallgr as set forth.

7.v The combination in a machine substantially as described of` a main shaft,a feedscrew, a carrier for the stock-rods arra ed for operation bythe feed-screw, ide-tu es arranged to receive the stock-ro a frame su porting said tubes, means for turning the tu es, whereby to yturn the stock-rods, the

IOC

tools for o erating on the stock-rods arranged on t e porting frame om the carrier, means for opposite side of the tube-supolding the stock-rods from longitudinal movement arranged between the said frame and the tools for operatin on the stock-rods, f,

main shaft, said coupling being arranged between the tube-supporting frame and the stock-carrier, and rods extending from said coupling through the tube-supporting frame 'and arranged for operation bythe devices for a coupling between the eed-screw andthe IIO provided in its opposite sides with slots, of

standards vhaving lugs entering saidV slots, whereby the tool-plate may move along the standards, tools movably supported on said tool-plate, a cam-plate to operate in said tools, means for turning the cam-plate, and means for moving the cam-plate and 'toolplate along the standards, substantially as n' set forth. i Y

9. The combination in a machine substantially as described, of the tool-carrying plate, the tools movable along said late, the carnplate'arranged to operate saiA tools and provided with a worm-rack, a wormshaft mesh and the cam.p'late,-of the tool composed of an ing-with' midgrtck, bm seemed to' uit um;

plate and having slots receivingsaid worinshaft, standards carrying the cam-plate and tool-plate, and means for moving said lates a1ongthestandards,substantiall asset orth.

10. VThe combination with yt `e tool-plate intermediate section having a lo itudinal slot, sections on o posite sides of the intermediate section, van ,the stud passing through said section, and having av threaded stem screwing Ainto one of the.sections,said stud passing through the tool-plate into the camplate, substantially as set forth.

11. The combination with the main shaft,

the carrier for-the stock-rods, a feed-screw for o rating said carrier, a coupling between the eed-screwand the main shaft, a series of rotatable guide-tubes for the stock-rods, gearing between the said tubes and the main4 shaft, gri ping-blocks in the guide-tubes for holding t e stock-rods from endwise movement, nuts threaded on the guide-tubes and adapted to compress the gripping-blocks 1 pinions on the nuts a gear-wheel mes with said pinions and moving bodily therewith alonie guide-tubes in the direction of the coup between, the main shaft and feed-screw and means arr ed for operation by said gear-wheel for releasing the coupling, substantially as set forth.

12. The combination with rotatable guidel tubes for the stock-rods and havinga threaded ortion for g the stock-rods against en Wise movement, nuts t on said threaded portion and rovided withy means for compressing the b ocksupon the stock. "rods, said nuts having mes withsaid pinions, and t normally eely with said pinions as'the atter are revolved with R the guide tubes, and means for locking said gear from turning, whereby the nuts may be held by their pinions from turning and will be caused to travel j along the .revolving threading portion, substantially as set forth.

ed portion, of ing-blocks in said threadinions a ear-wheel,

13. The combination with the rotatable guide-tubes having threaded gripping-blocks in said three. ed ,portions nuts turning Ion the threadedfportions' an provided with means operative to compress the blocks, and said nuts being provided wit-li pinions, a gear-wheel `meshing with said pinions, means whereby the gear-wheel may be held from turning, push-rods arra ed to be acted on by said ear-wheel, a fee -screw, a

main shaft, a coup Ybetween said screw andI guide-tubes, said tubes being rovided lwith threaded ortions', nuts on sai threadrtions, the

sys

ed portions an provided with pinions,means operated by the travel of said nuts along the t aded portions for. clamping thel stockrodsagainst endwise movement, and means whereby the said nuts maybe held from movement whereby they will .be caused to travel along the threaded portions.'v I' 15. The combination in an a paratus substantially as'described,'.with t e feed-screw, 'anda carrier operated thereb and arranged to feed the stock-rods, of t e main shaft, means for clampingl the stock-rods against endwise movement, and means operated from the stock-clamping means for uncoup- -ling the feed-screw from themain shaft When .the stock-clamps are-thrown into position-to ip the stock-'rods the feed-screw vbeing forth.

Witnessesz PHILIP F.' Han'rnsm, O. H. Timms.

'ven by the 'main-shaft, substantiallyas set JOSEPH KENNARD lKooNs;

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