US2448393A - Trimming machine - Google Patents

Description

Filed April 27, 1943 7 Sheets-Sheet l I R3 w kl Q i O Q N E R a: a

1 I o b N I o Q g3 R? x D Q r 1948. w. .s. REYNOLDS 2,448,393

TRIMMING MACHINE INVENTOR WARREN J- F /V0403 Aug. 31, 1948'. w. s. REYNOLDS 9 TRIMMING MACHINE Filed April 27, 1943 7 Sheets-Sheet 2 INVENTOR HERE/V J. XIV/vol as ATTORN EY5 Aug. 31, 1948. w. s. REYNOLDS TRIMMING MACHINE 7 Sheets-Sheet 5 Filed April 2'7, 1943 INVENTOR WaKRE/V \S. Ray/v0. as

ATTORNEYS Aug. 31, 1948. w; s. REYNOLDS 2,448,393

\ TRIMMING MACHINE f7 Sheets-Sheet 4 Filed April 27, 1945 INVENTOR WARREN d. inf/vans BY 3W 7 ATTORNEYS Aug.. 31, 1948. w. s. REYNOLDS TRIMMING MACHINE Filed April 27, 1945 7 Sheets-Sheet 5 INVENTOR Mmczw J. KEY/v0; as

at .R 09

9,4 ATTORNEYS Patented Aug. 31, 1948 UNITED STATES PATENT OFFICE TRIMIVHNG MACHINE.

Warren S. Reynolds, Stratford, Conn, assignor to Remington Arms Company, Inc., Bridgeport, Conn, a corporation of Delaware Application April 2'7, 1943, Serial No. 484,701

4 Claims. 1

This invention relates to automatic machinery particularly adapted for operating on metal; articles and is especially applicable to turning operations. It is specifically disclosed, for illustrative purposes, for finishing articles such as the heads of cartridge cases. In quantity production of such articles it is necessary that accuracy be maintained and that the machine operatin time be reduced as far as possible. In general, the present machine comprises a rotating turret which is indexed to various positions, said turret carrying a plurality of rotating chucks. The articles to be operated upon are fed, rotated to the tool stations. and then ejected. The other objects of the invention will become apparent from the following description and illustrations which are merely exemplary.

In the drawings:

Fig. 1 is an end view of the machine looking toward the turret.

Fig. 2 is a side elevation view of the machine.

Fig. 3 is a side View partially in section.

Fig. 4 is a sectional elevation view taken in the direction 44' of Fig. '7, the main turret shaft bein shown unbroken.

Fig. 5 is a sectional elevation view taken along the line 5-5 of Fig. 3.

Fig. 6 is a sectional elevation view of the looking means taken generally along the line 6--6 of Fig. 5. The slide has been broken away and part thereof is not sectional through the center line.

Fig. 7 is a sectional elevation view taken along the line l-! of Fig. 3.

Fig. 8 is a front elevation view of the turret and tool operatin mechanism.

Fig. 9 is an enlarged side elevation view taken in the direction 9-9 of Fig. 8 showing the roughing tool.

Fig. 10 is an enlarged side elevation view in the direction ill-l0 of Fig. 8 showing the finishing tool.

Fig. 11 is a fragmentary sectional view along the line H-'|| of Fig. 9 showing the adjustable roughing too1 holder.

Fig. 12 is an enlarged sectional view of the 'tool feed mechanism looking in the direction [2-42 of Fig. 8.

Fig. 13 is an enlarged sectional view of the roughin tool taken in the direction l3l3 of Fig. 8.

Fig. 14 is an enlarged sectional view of the roughing t-ool operating mechanism taken in the direction i4-! 4 of Fig. 8.

Fig. 15 is an enlarged sectional view showing the operating connections between the roughing 2 tool operator and the too1 rock shaft taken in the direction l'5l.5 of Fig. 8.

Fig. 16 is an enlarged sectional view showing the operating mechanism for the finishing tool taken in the direction Iii-l6 of Fig. 8.

Fig. 17 is a horizontal w'ew partly in section of an alternative form of finishing too1 taken in the direction l.0|0 of Fig. 8.

Fig. 18- is an enlarged sectional view of one of the chucks.

Fig. 19 is a fragmentary sectional view along the line l9-l9 of Fig. 17 showing the tools of Fig. 17.

Fig. 20 is a side view of one form of roughing 0001.

Fig. 21 is an end view looking toward the dog mechanism of Fig. 6 and along the line of the axis thereof.

Fig. 22 is a cross section taken along the line 22-22 of Fig. 6.

In general, the present machine comprises a. frame 20 having a turret 2| rotatably mounted on a shaft 22. Located on turret 2| are collets or chucks which comprise several parts and are identified generally by numeral 23. The chucks 23 are rotatably driven by suitable gearing. For purposes of illustration, cartridge cases will be used, but the invention is applicable to other articles. In the manufacture of cartridge cases, the base end of the drawn case must be finished and an extractor groove cut in the wall of the case adjacent the head. The groove is for engagement by feeding means of the gun and/ or the extractor mechanism thereof so that the groove must be accurately located and correctly formed.

A feed tube 24 feeds cases to the feeding means shown generally at 25. The specific details of the feeding means per se is disclosed in the copending application S, N. 473,065 filed January 21, 1943, now Patent No, 2,369,269, issued February 13, 1945. After a case is fed into a chuck at station A, the turret indexed until a cartridge case is located at station C, at which point a roughing too1, shown generally in the tool holder 26, is advanced and operates on the end and/ or extractor groove of the case. Station B is provided as an additional station where other tools may be placed if desired to perform other operations on the case at this point. The turret at its next indexing operation brings the chuck to station D where a finishing tool carrier, shown generally at '21, may operate on the case. At station E the case is ejected onto the delivery chute .28. The machine has a main driving motor at 29, located within the frame, to operate the various cams and parts in timed relation, as will be described hereinafter, to perform the functions as indicated. A motor 29 is provided for driving the spindles. The machine comprises a number of various parts which will be described in sequence.

Chucks Referring now to Fig. 18, it is desirable that the chuck be constructed in such a manner as to assist in the feeding of the shells therein and to have parts so arranged that they may be interchanged with ease to provide for means to operate on articles or cartridge cases of different sizes and lengths. The .chuck must be constructed so as to be easily manufactured and to maintain an article accurately in position while the tools are operating on the end of said article.

A cartridge case is shown at 30 engaged by the jaws 3!! of the chuck 23. The jaws 3! are contracted by means of the sloping surfaces 32 on the chuck sleeve 33. The chuck may be of the usual split collet or contracting type. The chuck sleeve 33 is resiliently forced to the right (Fig. 18) by spring 34. Retraction of the chuck sleeve is performed by means of the semi-floating fulcrum levers 35. As the collar 36 is moved to the right, a locating pin 31 will engage one portion of a lever, said lever then being slidably pivoted on the fulcrum surface 33. This will move point 39 of the levers to the left to thereby engage surfaces 40 of the chuck sleeve and move the chuck sleeve to the left. This will compress spring 34 and release the spring jaws 3i. By this construction it is not necessary to use a heavy fulcrum pin in the shell at a point where it would be difficult to fit the same. A fulcrum pin would also require enlargement of the parts at this point which is undesirable.

The chuck shell 4| is slotted at 42 and a slidable collar operating piece 43 is movable within this slot. The projecting portions 44 of piece 43 engage the collar 36. The chuck shell M has threads 45 cut thereon, said threads being interrupted by slot 42. Nuts 46 engage threads 45 and serve as a stop for movement of collar 36 to the left under the urgence of spring 34. Chuck shell 4! has suitable bearings 41 carried between the shell and turret 2| in a well known manner. Chuck shell stop pin 48 may be used to limit movement of the chuck operating sleeve 33 and movement of the jaws 3i inwardly of the shell as the sleeve 33 is moved to the left to release the chuck. A threadedly attached cover 49 is provided which can be readily removed and the chuck or operating parts thereof exchanged for those of desired size if a different size piece is to be machined.

Gear 55 may be mounted on the chuck shell 4| and held in place by nut The gear 50 is turned by means, which will be described hereafter to rotate the chuck spindle assembly. An ejector plunger 52 is located within the jaws 3i and chuck sleeve 33. The ejector plunger 52 is moved by the ejector plunger operator 53 (which in turn is moved by operating mechanism through aperture 54 in the collar operating piece 43. Movement of plunger operator 53 is transmitted through aperture 54 in the collar operating piece 43. Movement of plunger operator 53 is transmitted through spring 55 to ejector plunger 52, said spring being yiel-dable in case of a jam in the chuck. Pin 56 and collar 57 serve to limit movement of the operator 53 relative to ejector plunger 53. The forward end of the ejector plunger 52 has a hemispherical portion 58 which will serve to guide a hollow tubular article, such as a cartridge case, into position during the feeding operation. The spindles turn in the direction indicated in Fig. 8.

Chuck spindle drive The chucks are rotated at all times while the machine is operating and are driven by the motor 29 through drive shaft 209 (Fig. 5). Gear 2m, located on the drive shaft 209, meshes with gear 2!! (Figs. 3 and 5). Gear 2H is connected to sleeve 2l2 which encircles shaft 22, there being bushings 2|3 and 214 located between the sleeve M2 and the main shaft 22. Gear 2H may be held in place by means of lock nut 215 and key 24f. A'key slot is formed in which key 24! is held from endwise movement by pin 2l6. The gear is forced against flange 242 by turning lock nut 2l5 on threads 243. Gear 2H may be of the helical type, if desired, so as to pull the sleeve to the right and thereby take up end play constantly in one direction. A spacer 2H is provided to assist in properly locating sleeve 2|2 in conjunction with the upstanding flange of bushing 214. In the construction shown the sleeve is accurately held longitudinally. On the end of the sleeve 2! 2 opposite to gear 2 ll there is a hellcal gear 2l8 (shown broken away above the main shaft) which meshes with chuck gears 50. As shown, gears M8 and may be of the helical type with the helix direction so arranged that all play in the chuck bearings will be taken up to the left due to the thrust on the chuck gears which tends to draw the chuck assembly to the left (Fig. 3). By this means, the chuck will be located to the left and the movement of a case therein will not affect the position thereof in the turret. Thus the case will be accurately located each time which is desirable in precision quantity production.

As set forth above, the description of the feed mechanism is given in detail in said Patent No. 2,369,269. In summarizing, articles are fed from tube 24 into the chuck by means of a suitable carrier (not shown) which takes the articles from the inclined position and places them in a horizontal position. The feed rod 59 (Figs. 1 and 3) and 53.

reciprocates in timed relation and moves a case from said horizontal position into a chuck located at the feed station. As described in said copending application (but not shown in detail herein) a feed member provided with a side opening aperture oscillates so as to carry a case from the inclined feed tube 24 to a horizontal position. At the horizontal position the article is discharged from the aperture onto a platform (not shown), the platform being reciprocated by the feed rod 59. The platform has a plunger thereon. The article is held in this horizontal position so that the platform slides thereunder until the end of the plunger is reached, at which time the case falls in front of the plunger and as the plunger is moved toward the turret, the article is carried into a chuck. These details are not shown inasmuch as they are described in said copending application.

The feed rod 59 is reciprocated by means of cam surfaces on the main cam drum 6!] (Fig. 3) which is mounted on cam shaft 6i supported in the main frame of the machine by bearings 62 Bearing 63 is supported by the frame dividing wall l it. The cam shaft is driven by pulley 64 (Fig. 3) from the main operating motor 293 (Fig. 2). The motor 290 is not shown as it is located within the frame. As shown, pulley 64 also serve. as a handwheei. Feed rod operating lever $5 is pivoted at: 66 and has a roller 61. which is engaged by the cam surfaces 6.3 on the cam drum 6i Motion thereof is transmitted through links 69 to block l0. Spring Tl abuts block. it: and collar '32 at its other end on feed rod 5? Spring ii normally holds block 10' against feed rod collar l3 and thus the counter-clockwise rotation of the feed rod operating lever iitl will be transmitted to the feed rod 59 through springv it and collar 12. In the event there is a jam stoppage which prevents feed rod 59' from moving to the left, spring 7! will be compressed and no damage will be done. A switch operator M- is pivoted at it on. block it. As the spring "H is compressed, block Iii will separate from collar 1'3 and surface l6 will coact with the switch operator M and cause the same to move. upwardly, thereby contacting plunger Ti and operating a suitable microswitch 18' to stop the machine. The switch l8 may be placed in the circuit of the motor 295 in any of the usual manners. It is thus seen that the cam. surfaces tail on cam drum kit? will cause oscillation of feed rod operating lever 65, which in turn, will reciprocate feed rod 59 and move articles into a chuck.

Chuck opening. and closing In order for the article to be fed into the chuck and ejected. therefrom, it is necessary that chucks be opened at the stations where these operations are performed, namely, stations A and. E of Fig. l. The. chuck opening mechanism will be described specifically for the work ejecting station which is shown in Fig. 3. The chuck opening mechanism for the feed station is identical thereto with the exception that the ejection plunger is emitted. [a hollow reciprocable actuator H3 iscarried in bearing. til 01 the main machine frame. A thrust bearing M is located on the end thereof, which contacts the sliding piece it of the collet operating mechanism. The reciprocable operator E9 is screw threadedly engaged with the crcsshead 32. Adjacent the screw threaded portion there is a slot 83 and a screw 8 which may be tightened up so as to hoid the reciprocating operator E9 in position after it has been adjusted therein. The crosshead this pivotally connected at 85-by means or pivot pin 86 to the chuck operating lever 87 (Figs. 3 and 'Z). The upper end of lever 81 is bifurcated at 38 (Figs. 3, i and 7) and slid'ably engages the oscillatable block 89 which is pivotally connected at 90 to the frame of the machine. The lower end of lever 81 has a cam roller ill which is engaged by the cam surfaces 92' of the main cam drum so as to reciprocate the crosshead 82. In this manner a straight line motion is given to the cross head 82 and the bifurcated end 88 may slide on the oscillatable block 89 as the cam surfaces 92 cause oscillation of the chuck operating lever 81. The reciprocable chuck actuator 96 for the feed station is similar to that just described but is not shown in Fig. 3 except for the threaded portion 93 and a small portion which is broken away, so as to' simplify the drawing; As the lever 81 is oscillated, motion is transmitted to the cross head. 82 and from there to chuck actuators l9 and 9A. These in turn transmit motion to the slidable piece 43 through the thrust bearings 8!: so as to release the chucks.

Work ejecting mechanism An ejector actuator rod 95 is located within the chuck actuator 19. Ejector actuator 95 isreing t e same. has been withdrawn from slot PM so as to allow ciprocated by means; of. ejector actuating lever it which is pivoted at 9:! and has a cam; roller 98 thereon which is. operated by cam surfacesv E19 of the. main cam drum 50.. The end of ejector actuator Q5 advances at: the. proper time and enters the aperture 5d (Fig. 18). to engage plunger operator 53 which. in turn ejects. the case throughejector plunger 5-2 from the chuck as the chuck is opened. The ejector plunger: and operators 5 2 and. 53. remain: in their forward position as the turret is indexed to the feed station. Then when an. article is into. the chuck, the. rounded end 522- of the ejector plunger 52? assists in guiding the new article into place and the plunger and operators 552. and are moved to the. left by the new article.

Turret indexing The turret is indexed by means of the. Geneva escapement mechanism which includes. the star wheel H30 (Figs; 3 and '7'). Cam roller: ti located on. the end of the main cant engages-theapertures it? of the star wheel and. causes the main turret shaft 22 to be indexed the correct amount; the: turret being unlocked- Turret locking The turret is locked by-means'of a dog Hi3 (Fig. 5) which is advanced into slots Hi4. (Figs. 3' and: 5) inthe external surface of the turret. These slots may be located in adjustable or removable plates Hi5 which are held inplace-by screws Hi6. Thedog is advanced by means of: spring till (Fig. 6), The tension of spring iiit may be adjusted by means of screw tilt; lhe dog, is retracted at the proper time by turret locking cam ltd which causes oscillation of the lock operating leversi I it and I'll)" which are mounted on. shaft Ht, said levers being connected by hub H5. A cam roller. M2 is provided on. arm Mil. Thearm H8 is-co-nnected' to the lock operating slide M3 by means of stud. lit. The lock slide H3 is slidable ina groove 2:21 (Figs. 21 and 22) out the slide carrier 223. Slide'carrier 228 is held. in: place on the main frame by means of machine screws 228; The adjusting screw 588 is mounted in the head of the carrier 228 and may have a pilot 235 to. assist in guiding the spring ld'i, said: spring being located. in an aperture 25H in the slide i iii; The slide M3 is held in place by means of slide retaining, bars. 232 and 233;, Slide retaining bar- 232 may be. fastened to carrier 2.28 by means of screws 234. and slide retaining bar 2 33? may be held in place by screws 2'35 and locatingpin. 235i.

. The stud H4 engages a square bushin 2.315,.sai'd bushing being shown broken away along its cen ter line in Fig, 6. The bushing. 23"! is located on the slideby'meansof a locking block 238* which is fastened to the slideby means ofscrew 239v and locator'pin 2%;

The turret indexing and locking is thus accomplished' by means of the cam roller Hil entering the apertures 32 of the star wheel 508- andturn Previous to this the locking dog the turret to turn. Upon completion of the turrot movement cam I89 will have been so rotated as to allow re-engagement of the locking dog with the succeeding slot I04.

Tool. operating means A tool operating rock. shaft tit (Figsfi and 85.). is oscillated by a cam on. the end of the main operating; cam drum. 60 through roller I215 andv tool shaft operating; lever I22. Oscillation of" 7 shaft I causes a rocking movement of the bell crank lever I23, (Figs. 8, 12 and 15.)

The operation of the roughing tool at station C first will be described. There is an upstanding arm EM carrying a stepped stud I on which is mounted a block E25, said block I 25 being slidable within the guide E27. Guide I2? is attached to arm I28 by means of nut I29 and pin I35. It is to be noted that Fig. 15 is a section looking in the direction 55-45 of Fig. 8, the drawing having been turned on the sheet so that the shaft I25 is shown in a vertical position instead of a horizontal position as it actually is in the machine. This is done for convenience in order to properly correlate Figs. l4, l5 and 16, which are cross sections, taken in the directions indicated, of the tool operating linkage. As the shaft I25 oscillates, the upstanding portion I 24 Will oscillate, which in turn will cause oscillation of arm 528 about its pivot I5l.

Arm I28 pivots at E 3i about an opposed conical surface two-part telescoping adjustable journal. There are two outwardly diverging conicalli shaped bearing surfaces 32 and H33 mounted on the frame of the machine. The journal which oscillates cooperatively with these conical bearing surfaces comprises two opposed conical surfaces carried by telescoping parts. One conical surface is integral with the head I35 of the lever arm 28. The other conical surface opposed thereto is integral with the telescopable portion I3 of the journal which telescopes within the head E35 by fitting into the apertur 21H located in head E35. The portions IM and I35 may be adjusted longitudinally of each other by means of varying the thickness of spacer ring MI. The screw I3I and washer it! serve to hold I3 3 and I35 together through spacer ring I lI. A key is provided at Hill for preventing relative rotation between I35 and I35. The key may be of the three-part Presto type if desired. As the adjusting screw iii is tightened, the conical surfaces of I35 and ld l are moved closer together so as to tighten the journal between the conical surface-s I32 and :35. Operating arm I39 is attached to portion 3d by means of screws I45, By this means, lost motion can be controlled so as to insure accuracy in tool movement. A suitable sealing ring N2 of metal, leather or some other substance, may be employed to prevent chips or powdered material from entering the bearing and thus spoiling the bearing surfaces of the journal. The sealing ring M2 may have a metal backing 244- which is pressed inwardly by a plurality of springs 2A5.

Operating arm E39 has attached thereto a tool I holder shown generally at I 55 (Figs. 8, 9 and 13) The tool may be of the conventional circular type (Fig. 20) having a cut out portion 202. It is to be noted that Fig. 20 is taken in a direction looking to the left in Fig. 9, It is to be understood, of course, that other types of tools may be used.

A carrier block I it is mounted on operating lever I39 by means of locking screws Hi5 which may be tightened to hold the block in place, adjusting slots being provided. The vertical position of the sliding block M l may be adjusted by means of adjusting screw I after loosening locking screws M5. The tool is carried on a shaft I41 having a nut M8 thereon. The tool I45 is pinned to a plate (Figs. 11 and 13) by pins 203. The tool may be adjusted for angularity by means of set screws l5i which are mounted in I44. The plate I58 has shoulders 204 out thereon which cooperate with screws I5I for ad.-

justing the angular position thereof. In this manner, the cutting edge I 52 (Figs, 9 and 20) of the tool I49 may be adjusted.

As the rock shaft I20 is oscillated, the arm I39 will be oscillated. The tool M9 is thus oscillated about the pivot 55H so that it will engage the shell I53 and cut the desired grooves therein.

A plate I54 (Figs. 8 and 15) is mounted on the stud l 55, said plate serving as a fastening for one end of the spring I56. The other end of spring I58 is mounted on the link by stud 295. This is done so as to take up all slack in the pivot pins and other surfaces before the tool starts to out.

The finishing tool is operated by the mechanism about to be described. Link E5? is pivoted to arms 58 and i225. Arm 58 pivots at I55 about an opposed conical surface two-part telescoping adjustable journal similar to that described for pivot I3 I. The bearing comprises two outwardly diverging conically shape-d bearing surfaces IGI and I62 mounted on the frame of the machine. The journal which cooperates with these conically shaped bearing surfaces has opposed conical surfaces carried by telescoping parts. One conical surface is integral with the head E58 of the lever I58 and the other conical surface opposed thereto is integral with the telesc'opable portion I64 of the journal which telescopes in the head I68 within aperture 295 thereof. The head and telescopable portion may be adjusted longitudinally of each other by means of varying the thickness of washer 555. The screw i156 and washer I6'I serve to hold it l and 65% together through spacer ring I59. A key is provided at 257 for preventing relative rotation between the head I68 and portion I54. Operating arm Ill is attached to telescopable portion 554 by means of screws 208. In this manner it is possible to closely adjust and eliminate lost motion from the journal in a critical portion of the linkage for accurate movement of the tool. Sealing ring H5 is provided for preventing foreign material from getting into the pivot bearing and has a metal backing plate and springs similar to that described for Fig. 14.

The operating arm Ill has attached thereto a sliding plate I'IZ which is longitudinally adjustable on said operating arm. Adjusting screws I13 and I it are located in elongated slots so as to provide for longitudinal adjustment of the adjustable plate I72. Pin H 6 may be tapered and have adjusting and lock nuts i912 thereon. The tool Il'l (Figs. 8, l0 and 16) is carried in the slot I18 of the plate and clamped in place by means of clamp H9 and screw 5%. The tool I" may be adjusted by means of the screw threaded member I92.

Adjustment of the plate 5 ?2 on arm I'II toward and away from the face of the chuck is effected. by means of adjusting screw I 8! carried in an aperture I82 (Fig. 10) of the bracket I83 on operating arm ill. The pin I84 and mating groove I85 in the shank of the screw IBI hold the screw I5l from longitudinal displacement in the bracket I83. Screw threads I853 are provided in the plate I72. By turning screw ISI, the plate I12 is adjusted longitudinally on the arm I?! so as to properly locate the finishing tool relative to the head of the cartridge case to be finished.

As shaft 526 is oscillated, the arm I58, through arm I23 and link I51, will be oscillated and the finishing tool ill will be carried into or across the head of the case being operated upon so as to give a finishing c'ut thereon.

It is to be noted that the lever arms are of different lengths so that the amount of oscillation of the finish and roughing tool will not be the sam and can be varied in accordance with the lengths of lever arms used. In the particular arrangeinent shown, the finishing tool will be given a greater travel than the roughing tool relative to the cases being finished. A. spring it? has one end fastened at 588 to lever H 3 and one end 33%! to arm E55 so as to take up slack in the pivot pin and othersurfaces before the tool starts tocut.

An alternative type of tool is shown in Figs. 17 and 19. When a tungsten carbide tool is to be used it is 'difficult to cut the desired contour there-in if a sharp corner is required. In order to trim the groove of a cartridge shell and put the exterior chamfer on the head it is necessary to provide two tools. This may be done by the tool holder arrangement shown in Figs. 12 nd 19. The plate 93 is hinged on the hinge pin H6, which carried by the sliding plate W2, similar to that reviously described for ill. The adjusting screw shown at iSl is carried on the bracket 4 The tool for finishing the extractor groove of a cartridge case is shown at lu l and the tool for finishing the chamfer on the end of the cartridge is shown at l These-tools are held in position by the clamping plates W5 and till which are locked in place by screws and 595. In Fig. 19 may be seen a portion of a cartridge case at 2% with the groove finishing tool and the bead chamfering tool ass.

oiling system.

One type of oiling system which ma be employed includes a pump 22!) (Figs. 3 and 7) which is driven from cam 22! located on the end of the main cam drum 68. A bell crank lever 222 serves to transmit the motion from cam 22d to pump 220 in a conventional manner. An oil strainer 223 may be provided through which the oil is pumped to the various bearings by way of oil manifold 22d. A typical oil connection to a bearing is shown at 225. A level indicator 226 of the conventional type may be provided.

Summary Shells are fed to the machine through feed chute 24 and by means of reciprocation of feed rod 59 by cam 68 are fed into a chuck located at station A. Previous to this, the chuck at station A has been opened by reciprocation of crosshead 82 by means of cam 92. The crosshead 82 then moves to the left allowing the chuck to close on the shell which then rotates rapidly with the chuck. The turret is then indexed twice until it reaches station 0. At this point the tool operating rock shaft I20 is oscillated causing roughing tool M9 to be oscillated counter-clockwise (Fig. 8) about its pivot l3l. This moves the tool into contact with the rotating shell and causes a roughing cut to be made thereon. The turret is then indexed to station D and at this point the next oscillation of tool rock shaft l2 8 causes movement of the finishing tool about its pivot I65 to move the finishing tool I'll counter-clockwise about said pivot and cause a finishing cut to be made upon the shell. At the next indexing of the turret a shell arrives at station E where actuation of crosshead 82 will open the chuck as previously described for the feed station. Crosshead 82 operates to open two chucks at a time through reciprocating operator 19 (election station) and reciprocation of operator 9d (feed sta tion). When the chuck is open at the ejection station, ejection cam 99 will cause movement of ejector actuator rod 95 to the right (Fig. 3)

which'will contact operator '53 and in turn will move ejector plunger 52 to the right and elect the shell from the chuck. The spring 55 be partially cocked in this operation so that when friction between the shell and chuck is overcome the shell will be forcefully ejected outwardly and away from the chuck.

What is claimed is:

1. In a machine; a frame; an indexably rotatable turret carrying a plurality of chuck spindles; an ejection and feeding station; and means for simultaneously opening said chucks at said ejection and feeding stations including a cam, a pair of slidable operators for opening said chucks, a crosshead joining said operators, a lever pivotally connected to said crosshead, the ful crum end of said lever having a floating connection with said frame and the opposite end of said lever engaging said cam for operating the lever and crosshead whereby the crosshead is given a substantially rectilinear motion.

2. In a machine; a frame; an indexably rotatable turret carrying a plurality of chuck spindles; an ejection and feedin station; means for opening said chucks at said ejection and feeding stations including a pair of slidable actuators for opening said chucks, a crosshead to which said actuators are adjustabiy fastened; a lever pivotally connected to said crosshead, the fulcrum end of said lever having a rotatable and slidable connection relative to said frame and the opposite end of said lever engaging cam for operating the lever and crosshead, whereby the crosshead is given a substantially rectilinear movement; an ejector plunger in each of said chuck spindles; an ejector plunger operator slid-- able within the slidable chuck opening actuator at the ejection station; and means to operate said ejector plunger operator.

3. In a turret type machine having a plurality of chuck spindles; a pair of bell cranks mounted on said machine; a pair of sets of tools each adjustably mounted on an arm of one of the bell cranks to operate on work carried by said spindles; means to operate said tools comprising a cam operated rock shaft, a two-armed crank on said rock shaft, a sliding block connection between one arm of said two-armed crank and the bell crank on which one of said sets of tools is mounted and a link connection between the other arm of said two-armed crank and the bell crank on which the other of said sets of tools is mounted, the ratio of said connections being such that the tools are moved difierent distances at differcut rates by said rock shaft.

4. In a machine; a turret having a plurality of rotatable chuck spindles with interchangeable collets; a chuck shell for each collet; an actuator reciprocable within each shell relative to and co operating with a collet for contracting the same, each of said collets having an ejection plunger aperture and an interchangeable, telescoping ejection plunger assembly, spring extended to a limited extent and slidably mounted in said aperture for axial floating movement therein limited by the collet and said actuator, said plungers having rounded ends for yieldably engaging a piece of work as it is being fed into a collet; caps engaging said shells for removably holding said collets in a position engageable by said actuators; feed and ejection stations for said machine; chuck openin means at said feed and ejection station each including a plunger and members cooperating with said actuator to operate any of the interchangeable collets; an operator at the ejection station for moving any of the interchangeable ejection plungers to eject an article from an open chuck; means to indexably rotate the chuck from the ejection station; and means to feed an article into the chuck at the feed station, said article sliding the ejection plunger assembly against the actuator in a direction opposite to ejecting movement and slightly telescop ing the spring extended assembly.

WARREN S. REYNOLDS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 12 Name Date Bullard et a1. Nov. 19, 1918 Drissner et a1 Nov. 4, 1919 Shearer Dec. 5, 1922 Trundle July 15, 1924 Brown July 29, 1924 Longley July 21, 1925 Andrew June 26, 1928 Lewis Oct. 30, 1928 Brown Nov. 24, 1931 Wilt Jul 18, 1933 Dumser Dec. 19, 1933 Rupple Feb. 20, 1934 Dumser et a1. July 8, 1934 Cone Nov. 6, 1934 Rupple Dec. 24, 1935 Rupple Nov. 3, 1936 Probach Dec. 8, 1936 Brown et a1 June 8, 1937 Jones Aug. 23, 1938 Miller Nov. 22, 1938 Groene et al June 6, 1939 Schmuldt Sept. 8, 1942 Rupple Oct. 27, 1942 Musante May 1, 1945

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