US1080359A - Forming-machine. - Google Patents

Description

J.v D; MATTISON. PORMING MACHINE.

APPLICATION FILED AUG. 4. woo.

Patented Dec. 2, 1913.

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INVENTOR dm @I L( WITNESSES; QuM/A BY E E ATTORNEY COLUMNA PLANDGRAPH EU.. WASHINGTON. n. E.

J. D. MATTISON.

FORMING MACHINE.

APPLICATION FILED AUG. 4, 1900.

Patented Dec. 2, 1913.

SHEETS-SHEET 2.

COLUMBIA PLANoaizAPH co..wlsu|NoTON. u. c.

J. D. MATTISON.

FORMING MACHINE.

APPLICATION FILED AUG. 4. 1900.

Patented Deo. 2, 1913.

6 SHEETS-SHEET 3.

El@ 17 mmmmmm 1 l I I STF-E sf J. D. MATTISON.

FORMING MACHINE.-

APPLIGATION rILBD AUG. 4, 1900.

6 SHEETS-SHBET 4.

Patented Deo. 2, 1913.

...Mm .9. MW BY J. D. MATTISON.

FORMING MACHINE.

APPLmATIoN FILED AUG. 4, 1900.

"ra l /85 n EN El :.23 O l lil cOLUMUlA PLANOURMII CLLA WAsmNnToN, n. c.

J. D. MATTISON.

PORMING MACHINE.

APPLICATION FILED AUG. 4, 1900.

1,080,359, Patented Dec. 2, 1913.

im' @55 @3E sierras` JAMES D. MATTISON, OF HOLYOKE, MASSACHUSETTS.

FORMING-MACHINE.

Specification of Letters Patent.

Patented Dec. 2,1913.

Application led August 4, 1900. Serial No. 25,864.

To all whom it may concern:

lie it known that I, JAMES D. MATTISON, a citizen of the United States, residing at Holyoke, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Foru iiig-ltlacliines, of which the following is a specification.

This invention relates to the class of machines for automatically forming articles in multiple and exactly alike, from a bar of metal or other material fed through a tubular spindle to the cutters or shaping tools.

ln the machine as herein illustrated there are two spindles and two sets of cutters, which increases its capacity fourfold. The spindles are not supcrposed but disposed in a horizontal plane, so that the chips or cuttings from one mechanism will not fall on the other. The invention is not in all re spects restricted however' to this double construction or feature of the machine.

The novel features of the invention will be hereinafter described and carefully defined in the claims.

In the accompanying drawings, which illustrate an embodiment of the invention Figure 1 is substantially a vertical, longitudinal., section of the machine as a whole. Fig. 2 is substantially a vertical, transverse section taken at line Q02 in Fig. 1, looking toward the right; and Fig. 9.'1 is a detached view of the pawl-device for operating the gage-wheel. Fig. is a side elevation of a cutter-carrier and its swinging support, being taken from the left of Fig. 2. Fig. t is an end-view of the cutter-carrier or cylin der; and Fig. 5 is a detached view of the device for intermittently rotating said cylinder. Fig'. G includes two views of the bolt for locking .'aid cylinder or cntter-cari'ier. Fig. 7 includes two views of the cam for operating' the cutter-carrier and gage wheel. Fig. 8 is a detached view of the cross-head or yoke for operating the cutter-carriers and gage wheels. Fig. 9 is an endview o't the machine as seen from the left in Fig. 1, and showing the worm gearing. Fig. 10 is a vertical, axial section of the turret and turret-slide, illustrating the rotative operating mechanism. Figs. 11 and 1Q. each include `two views of one of the clutch collars of the worm-wheel of the reducing` gear; and Fig. 13 is a sectional view of this clutch device. Figs. 14, 15, 1G and 17 are detail views of the mechanism for operating the turretslide, Fig. 17 being` a dissected plan view. Fig. 1S is a detail plan of the turret cam-drum and the clutch devices associated therewith; and Fig. 1S) is a cross-section at w1 in Fig. 18. Fig. 2() is a plan of the parts seen in Fig. 18, and illustrates thc operation of the clutch. Fig. 21 a side view of the clutch devices for operating the cutter-carrier. Fig. 22 is an axial section of the cam-drum for operating the shipper and chuck, and of the friction box. F .igs 23, 24C and 25 are views illustrating the construction of the friction box. Figs. 26 to 29 are detail views of the means for t'eeding the stock through the tubular spindle and gripping it. Figs. 30 to 3G, inclusive, are views illustrating the cutters and means for seeuring them. Fig. 30 is a sectional view of the ring cutters and their securing' devices. Fig. 31 is a side elevation of same. Fig. 82 is an end view of the securing collet S2 at the left in Fig. 30. Fig. 33 is an end view of a coned ring collet which engages the cutter. Fig. 34 is an end view of the collet S23 seen at the right in Fig. 30. Fig. 35 is an end View of one form of ring cutter'. Fig. 3G shows a split ring cutter' and a collet 83 of reduced size. Fig. 37 is an enlarged view, in elevation, of the construction shown in Fig. 13. Fig. 3S is a vertical section, partly in elevation, showing a portion of the mechanism for effecting rapid and Slow movements of the cutter carriers toward the work. Fig. 39 is a horizontal section, partly in elevation, of the mechanism shown in Fig. 38. Fig. -ftO includes a face view and an edge view of the gears connecting shafts 7 and 41B.

The main sections of the machine are indicated as to position by capital letters.

A indicates the position of the shipper and chuck mechanism for feeding the bar or stock to the cutters.

l indicates the posit-ion of the cutters.

C indicates the position of the turret mechanism.

The operative parts are mounted in a suitable frame of any kind, which will not require description.

1 is a cone pulley to receive a belt for driving the machine forward, or in the normal direction, and Q is a pulley to receive a belt for driving said pulley in the opposite direction to the pulley 1, for reversing. These pulleys are loose on a driving shaft 4, and either may be coupled to the shaft. for driving it by means of a clutch 3. When the clutch is moved to the right (in Fig. 1) the pulley 1 will be vclutched to said shaft, and when moved to the left, the pulley 2 will be clutched thereto. The shaft t is hollow, and the clutch 3 is operated by a slide-rod 7 8 in the hollow of the shaft. The means for controlling the operation of this slide-rod will be described hereinafter. The shaft Il drives twotubular spindles 5, rotatively mounted in the frame, through suitable gear wheels 6, seen at the left in Fig. 1, and in Fig. 9. These spindles are disposed in substantially horizontal plane, and not one above the other. The object of this is to prevent the cuttings or turnings from the stock in one spindle from falling down upon that below. The gear-wheels 6 drive a cam-shaft 7, through suitable change wheels 8, seen best in Fig. 9. This is the ordinary mechanism for effecting a change of ,speed and will be familiar to any skilled machinist.

The means for feeding and clutching the stock will now be described with especial reference to Figs. 1, 2G, 27 28 and 29. On the shaft 7 is mounted a cam-drum 9, the

cams 9 on which operate shifters 10 and 27,

the former operating a gripping device for holding the stock (S in Fig. 28) while it is being operated on, and the latter operating a feeding device for feeding the stock forward tc the cutters. The gripper device, best seen in Fig. 29, comprises a coned sleeve 11, slidable on an enlarged part. of the spindle 5 and circumferentially grooved to receive a lug on the shifter 10. .This sleeve, when moved to t-he left (in Fig. 29) acts on the longer arms ofelbow-levers 11, fulcrumed in the spindle, to cause the shorter arms of said levers to act upon and push outward (to the right in Fig. 29) a slidable split clamping sleeve 13 in the spindle. The outer end of this sleeve is coned and plays in the coned nosing 5 on the spindle, whereby a very slight endwise movement of the sleeve 13 causes it to grip on the stock it embraces and hold it fast. When the sleeve 11 is moved back (to the right in Fig. 29) springs 11b retract the levers 11 and the shorter arms of the latter which engage the gripping sleeve 18, draw back or retract the latter. Figs. 26, 27 and 28 illustrate the means for feeding the stock. Fig. 26 is an end view of the shifter 27, showing its adaptation to both spindles, and to the operation of both of the sliding collets or sleeves 28 on the spindles. This shifter 27 and the shifter 10, are slidable on a fixed rod or bar 12, in the frame, and the shifter 27 engages circumferential grooves in the respective sleeves 28. This shifter has a lug which is engaged by a cam 9L to move the sleeve 28 to the right in Figs. 1, 27 and 28. This sleeve has pivotally mounted in it two oppositely disposed serrated jaws 29, which bear on and bite lightly int-o the stock S when the sleeve is moved to the right for feeding, and which slide over the stock when the sleeve moves in the opposite direction. Each jaw has behind it, back of the fulcrum or pivot, a spring 29, tending to press the jaws up to the stock. These jaws play in slots in the tubular spindle. Figs. 26 and 27 illustrate the means fo-r limiting the movement of the sleeve 28 toward the left, and Fig. 27 shows the spring 30, for returning the shifter 27. A screw 30 extends through the frame (at the left in Fig. 27 and screws into the frame at the right.

This screw has loosely embracing it the spring 30 and it passes loosely through the shifters. 0n it is a collar 30b which engages the shifter 27, whereby it forms a limiting stop to limit the extent o-f movement of the shifter 27, under the influence of the spring 30, and thus regulate the extent or length of each feeding movement of the sleeve 28. The head of this screw 30 projects and is squared to receive a wrench. The cam on the drum 9 operates the shifter 10 in both directions. As the cam-drum 9 rotates, at each rotation the cams 9 thereon act to feed out the stock S to a predetermined extent, and to grip it and hold it while the cutters operate on it. The cams on the drum will be so disposed as to first feed the stock and then clamp it fast. point where the cutters operate, the stock is backed by a head 14k which prevents it from springing away from the cutters. This head has in it work-supports 15 in which the stock rotates, said supports being open on the side to-ward the cutters, as seen in Fig. 2.

The cutting mechanism will now be described, premising that in this machine the stock S rotates and the cutter or cutters are brought up to it by a swinging movement. n order, also that several cutters may be brought up successively to work on the stock, these cutters are mounted in longitudinally extending chambers in the periphery of a cutter cylinder or carrier 19, which turns on an arbor 20, in a frame 20. Fig. 8 shows this carrier in side elevation, and in Fig. a it is seen in end elevation. The frame 2O rocks on a fulcrum 21 and is actuated to bring the cutter up to the stock by mechae nism that will be hereinafter described. The carrier 19 may be rotated to bring any one of its cutters into position, but while the cutting is under way the carrier is locked against rotation by a lock-bolt 22, seen detached in Fig. G, and in place in Fig. 2. This bolt is disposed upright in a recess in the frame 20, and is pressed upward by a spring seen in dotted lines in Fig. 2, into engagement with a locking recess 19b in the carrier. The bolt is pressed down and disengaged by a cam 23 on a rocking collar 23 on the same arbor with the carrier. This When fed out to the collar, which is seen detached in Fig. 5, is rocked through a connecting-rod 24 coupled (at 24a in Fig. 5) to said collar, and at its other or lower end to a cross-head 25 (seen detached in Fig. S) hung on the shaft 7, and actuated by a cam 2Gb on said shaft. This cam is seen detached in Fig. 7. The

' collar 23 has on it a spring pawl 23b (Fig.

5) which engages shoulders on a boss on the earrierone shoulder for each of the cutters in the carrier-and this pawl acts to rotate the carrier intermittently at the properl times and to the proper extent to bring a fresh cutter into play. A hoo-k 2? on the collar takes under a roller stud (22a in Fig. (3) and holds the lock-bo-lt against accidental depression and disengagement when it is in its locking position. It may be proper here to state that the cutter carrier 19 has (see Fig. 3) a spring' back-pawl, indicated at 541-, which is a well known device, to prevent back rotation of the carrier. As has been stated the cross-head 25 is hung on and guided in its up and down movement on the shaft 7 and it is also guided below on a boss on a shaft l18, to be hereinafter described. On the face of the cross-head 25 (Fig. 8) are two projections 25, 251 and when the 'am 2G rotates (to the right as seen in Fig. 2) it first engages the projection 25u catching under it and elevating the cross-head 25, thus throwing the pawl 23D into the notch in the cutter carrier 19, while the cam 23, (Fig. 5,) depresses the stop bolt 22, freeing the cutter carrier 19, so that as the cam 2Gb continues to rotate to the right it catches on top of the lug 25h, which is then in elevated position, and depresses it, carrying the cross head 25 downward and turning the cutter carrier 19 one step.

rlhe means for rocking the frames 2O about their fulcrums 21, in order to bring the cutters up to the stock, will new be described.

On the pendent portion of the respective frames 2O are hung hinged buffers 20, carrying rollers 20h, adapted to be acted on by cams 26 and 26a on shaft L18; and the extent. or depth of the cutl is regulated in each case by a gage-wheel SG, rotatively mounted in the frame 2O and pro-vided with .radial and peripheral studs SG, which may be set in or out, and which are brought, successively, to bear on the back of the buffer .2()C and limit its movement independently of the main frame. There are, as here shown, tive of these studs 8G, one for each cutter in the carrier 19, and they are brought successively into operative position behind the butl'er 2()c by the downward movement of the crosshead 25, through the medium of a connecting-rod S8 (Figs. 2 and 2a) coupled at one end to a lug on the cross-head 25 and at. the other end to a rocking pawl- :arrier 53 similar to that seen in Fig. 5) which turns on a boss in the gage-wheel 8G and carries a spring pawl 87 which engages teeth or shoulders on said boss. As the pawl-carrier is rocked, the pawl thereon imparts intermittent rotation to the gage-wheel.

The shaft 118 is called, for convenience, the slow shaft and the shaft 7 the rapid shaft, and their relative speed is variable. A worm or screw i15'), drives the shaft 48 through a worm wheel ($3 on the latter, this wheel being clutched to the shaft by a ratchet 1nechanism (52 of a known kind.

lt is essential that the stock S shall be fed to the cutters at the proper time and at any time required. When, therefore, the piece operated on requires the use of two cutters only in the cutter-carrier, the stock should be fed forward only at each two operations of the ciitter-carrier. flf, however, the article being made requires the use of three cutters of the cuttor-carrier, then the feeding device should operate but once at each three operations of the eutter-carrier. As there are, as here shown, live cutters in the cuttercarrier 1t), the feeding mechanism for the stock may be set to operate once for from one to .tive operations of the cutter-carrier. This regulation is ell'ected by the means now to be describtul. The device for ell'ecting this regulation is called a friction box, and is indicated as a whole by .D in Fig. 1; it is seen more in detail in Figs. 22, 2, 2t and The fixed box 31, which incloses a part of the shaft 7, contains a :friction eup 32, lined with leather and provided about its periphery with live series of notches 32", the first series containing live notches, the second four notches, the third three, the fourth two, and the fifth one. It may be stated here that Fig. 23 is an edge view ol. the friction cup. This cup 22 is driven by a cone 33, on a sleeve 34, on the shaft 7. Ihere is a pawl 35 (Fig. 21) on the box 31, the nose of which is held in engagement, normally, with one of said notches. This pawl is thrown out by a pin 2li (Figs. 2 und 7) in the boss of the cam 26" at each time the shaft 7 rotates, but drops into the next succeeding notch, thus locking the cup 32, while the cone 33 goes on and completes its rotation. It may be explained here that the pin 2GC acts on an arm 35 (liigs. 24.- and 25) on a rock shaft 35", on which the pawl 35 may be shifted along to put it in position to engage any one of the live series of notches 232". It is secured when thus adjusted and set, by ar screw 35". The trietion eup has onits end or, bottom a projection or boss $32 (seen in Fig. 23), and this cup will rotate but one step while a sleeve 341- (which carriesl the cam 261') makes one complete rotation. lf the pawl 35 he set to engagige that series containing tive notches 32'), for example, the pawl will lift and drop into the next succeeding notch and it will be seen from this that it will require five complete rotations of the cone 33 to produce one complete rotation of the cup 32. Now as the latter, by its rotation, controls the feed of the stock, it will be seen also that there will be but one operation of the feed to five rotative impulses of the cutter-carriers.

The cup 32 controls the feed through the following described means: rhe drum 9, that carries the 'cams 9a, effects the feeding of the stock, is loose on the shaft 7, and may be clutched thereto by a suitable clutch-device 9b (Fig. 22), the clutch being set by pushing in (to the left in Fig.- 22) a spring shifting bolt 37. As the cup 32 rotates the boss or projection 32 thereon wipes over the inner Aend of a slide 36 in the framev and alined with the shifter 37, and said slide pushes the shifter 37 in or back, thus causing the latter to set the clutch and connect the drum 9 to the shaft 7. One member of the clutch slides on the shaft 7 and is made to rotate therewith by a 'cross-pin 38 extending through a slc-t in the shaft. As soon as the drum 9 starts to rotate, the shifting bolt is carried around so that its end bears against the face of the machine frame and this holds the clutch set until the drum sh all have made a complete rotation; The bolt 37 now registers with the bore in which the slide 36 plays and shoots into same, thus disengaging the clutch and locking` the drum to the frame. This single rotation of the drum completes a feeding operation. llVhile this feeding operation is being eected the cutter-carriers are being rotated so as to bring the proper cutter into position for the next operation.

The sleeve 34, carrying the cam 2Gb, is operated and controlled by the mechanism now to be described with especial reference to Figs. 13, 19, 2O and 21. On the shaft 7 and forming a substantial continuation of the sleeve 34, is a sleeve 42. Splined and slidable on the shaft 7 is a double-faced clutch-member 39, one face of which may be made to engage a clutch-member 40 on the sleeve 42, and the other face with a clutch-member 41. `When the sliding mem ber 39, rotating with the shaft 7, engages the member 40, the sleeve 42 is driven; and in order that it may make but one rotation and then stop, the following described mechanism is employed: To operate thc clutch-member 39, there is a spring1 bolt 43, mounted slidably in a cam-drum 44 on the shaft 7. This bolt, as the drum rotates, becomes operative to force back a slide 45, which forms a part of a shifter 46, which engages a circumferential groove in the member 39. rfherefore the operation of the bolt 43 sets the clutch-member 39 into engagement with the member 40. There is a. lug 4G@ on the shifter 4G, which lug engages a circumferential groove 42a (Fig. 21) in the sleeve 42 and holds the clutchmembers 39 and 40 locked together until the rotation is completed; then the lug 46a moves out into a wider portion of the groove 422L and the clutch is automatically disengaged. This assures the stopping of the action of the friction device D, which controls the cam-drum 9, and the action of the cross-head 25, which controls the operations of the cutters and the gage-wheels 86. lWhen the cutter-cylinders or carriers are required to make more than one movement, the bolt 43 is caused to retain its pressure on the shifter-slide 45 so that the shifter cannot disengage the clutch. drum 44 is rotatable on the shaft 7 and is driven from a geaiwheel 47 fixed on the shaft 48, which rotates relatively slowly. Therefore, as the drum rotates quite slowly the end of the bolt 43 moves off from the end of the slide 45 before the rotation of the sleeve 42 is quite completed and thus allows the bolt with the shifter 4G to spring back into place. 1t will therefore be noted that when the bolt 43 is made to impinge upon the slide 45 far enough from its edge, it will still continue its pressure after one rotation of the sleeve 42 is completed and the clutch will remain engaged until the completion of a second rotation. 1f more than two rotations are required the bolt 43 is allowed to impinge sooner, and before the cam-drum shall have carried it off from the end of the slide 45, a third rotation of the sleeve 42 will have begun. The means employed for effecting the above object is best seen in Fig. 19. 1t consists of a collar 50, mounted loosely in a circumferential groove in the neck of the drum 44 and held elastically or yieldingly againstrotation by a spring 51. lVhen the bolt 43 is carried around to the upper part of the cam-drum it is pressed back by contact with a boss 52 on the frame (Fig. 13) and is thus in position to impinge upon a boss 73 on the collar 50 (Fig. 20). This collar then acts as a carrier for said bolt to the point where the latter is allowed to impinge on the end of the slide 45, and this point is determined by a pawl 55 which engages one of a series of teeth 50 on the collar 50y and prevents the further rotation of the lat-ter with the bolt 43, 1t may be explained that the frictional pressure of the bolt on the face of the collar carries t-he latter around with it, distending Ahe spring 51, until the pawl 55 engages the teeth on the collar, after which the bolt slides off from the collar onto the slide 45 and sets the clutch. The extent of movement of the collar before its arrest by the pawl, depends on the point of enga gement of the latter with the ratchet teeth 50u, and this point of engagement is determined by a gage-wheel 56 back of or behind the pawl and having substantially the same form and functions as the gage-wheel 86 The 4 before. described. The amount of projection of the screws o f the gage-wheel govern the number of rotations of the sleeve 42 without disengagement of the clutch. The member 41 of the clutch is connected with the drum 44, and if the clutch-member 39 be shifted .so as to engage with this member 41, the drum will be driven with the shaft 7 and of course at the Same speed. TVhcn driven in this manner the drum communicates its motion to the lower shaft 48, and through it to the `cams 28 and 2G, thereby rotating these cams rapidly and causing them to operate the cutters with greater rapidity. 'This accelerated movement of the normally slow shaft 48 is permitted by the ratchet mechanism 62 (Fig. 13) which will be of the known kind where the teeth will slip or wipe over each other when the driven clutch-member is made to travel faster than the other. The details of the ratchet mechanism in Fig. 13 are further illustrated in Figs. 11, 12, and 37. Suitably fixed to the sleeve G3 of the gear or pinion 48d is a. toothed annulus or ring (i2, shown in Fig. 12, which is keyed to the sleeve G3 in any suitable manner, as by .means of the key G21). Loosely surrounding the sleeve 63 is a toothed annulus G2, shown in Fig. 11. The toothed annulus 62 has a spline or feather connection with the worm wheel G3 by means such as the key 631. The annulus 62 is forced yieldingly toward the annulus G2 by means suoli a plurality of small coil springs B2b set into sockets in the worm wheel G3, the construction being such that the worm wheel G8, through the ratchet mechanism consisting of the annulus (32 and the annulus 62, will normally rotate the sleeve (33, and through the gear wheels 48, 48, and 48, the shaft 48, at a slow speed, but when a fast speed is applied to said shaft 48 from its opposite end, the annulus G9. will slip over the teeth of the annulus G2 in the well known manner of a ratchet, and will thus permit this temporary rapid rotation of the shaft 48.

Referring particularly to Figs. 18, 19, 20, and 21., the operation of the parts is substantially as follows: The upper shaft T rotates normally at a fast speed, and the lower shaft 48 rotates normally at a slower speed. The cam drain 44 is normally rotated at the same speed as the slow shaft 48 through the gear wheels 47, 47, and 44h. connected with drum 44. The clutch 39 is splined or keyed on shaft and is double faced so that it is adapted, when moved to the right in Fig. 21, to engage the clutch member 41 so as to rotate the drum 44 and the lower shaft 48 at the same lspoed as the shaft 7, and when moved to the left in Fig. E21, the clutch member 8f) 'engages the member 40 and thus rotates the sleeve 42 which, through the mechanism described, operates or rotates the critter' earriers and also feeds the stock through the cam drum 9. It may be here explained that the reason why it is desirable at times t0 rotate the lower shaft 48 rapidly is, that said lower shaft, through the cams 2G thereon, is adapted to swing the cutterearrier frames 2O toward the work. It is' desirable that these :frames Q0 shall be moved very rapidly until the cutters are nearly in contact with the work, and that said frames shall then be :fed slowly forward to move the cutters into engagement with the work or stock. 'lherefore, when the clutch 3S) in Fig. 2l is engaged with clutch 4l, the lower Shaft is rapidly rotated, to swing the frames 2O toward the work, and when said clutch 39 is moved out of engagement with 41, as hercafter described, the normal slow speed of the lower shaft 48 resumed. In order t0 convey a clear mulerstanding of this part of the invention, a description will now be given of the successive operations of the sleeve 42 which rotates the cutter carriers, and of the shaft 48 which swings the cutter carrier frames toward the stock. Referring to Figs. 18 and Q0, it will be seen that as the drum 44 is slowly rotated in the direction of the arrow, the bolt which is backed by a strong spring 43', engages an inclined projection 78 on collar 50 and rotates said collar slowly in the same direction as the drum 44. lVhen one of the gear teeth 50 in Fig. '19 on the collar 50, is engaged by the pawl the collar 50 stops. The pin 43, however, continues its movement with the drum 44 until it slips o'tii' the inclined projection 78 of the colla r 50 and strikes against the end of bolt 45 and :forces the same to the left in Fig. Q1. Connected with the bolt 45 is a shifter 4G having a lateral arm in eugagement with the clutch 89. The bolt 48, therefore, through bolt 45 and shifter 4G, moves the clutch 3S) into engagement with clutch 40. As the arm 4b on shifter 4G simultaneously moves out of the recess in the groove 4Q, and thusl unlocks sleeve 42, which was previously locked against rotation by the arm 4G, said sleeve 4:2 begins to rotate and thus operates the cutter carriers l). It' it be desired to rotate the sleeve 42 several times, the pawl in Fig. 1S) will be arranged so as to permit very little movement of the collar 50, for which reason the. bolt 43 will quickly slip oil' of said collar and engage the bolt 43, and as the drum 44 and bolt 43 are traveling at the slow motion of the lower shaft 48, the bolt will remain in engagement with bolt 45, and consequently clutches 39 and 40 will be enga ged, for a longI enough time to give several rotations of the sleeve 4Q during the time that the bolt 4b is traveling slowly across the end of bolt 45. then bolt 43 finally slips out of ei'igagement with bolt 45, the spring .4(3h in Fig. 2l will move the shifter 46 so as to unclutch 39 from 40. Spring 461, however, can only unclutch the members 39 and 40 when the arm 46a is opposite the recess in the groove 42e, so that the sleeve 42 will always stop its rotation and be locked in ,position at one particular point in its rotation. r1`he operations just described will have operated the cutter carriers 19 to bring the proper cutters into position. The continued slow rotation of the drum 44 next brings the bolt 43 into engagement with a small lever 61 for the purpose of transmitting rapid movement to the drum 44 and shaft 48 to feed th-e cutter carrier frames 20 rapidly toward the stock. rll`he lever 61, as shown in Figs. 18, 38 and 39, is provided with gear teeth which mesh with rack teeth on a longitudinally movable rod 60. Rigidly fixed on rod 60 is a sleeve 60, which is provided with a lateral extension 60', which fits around the bolt 45 in rear of the spring 46h, so that as the lever 61 draws the rod 6() and sleeve 60EL to the right in Fig. 18, the spring 46b is compressed and serves to throw the shifter 46 to the right in Fig. 21, thus engaging clutch 39 with clutch 41 and causing the drum 44 and lower shaft 48 to rotate at the rapid speed of the upper shaft 7, whereby the cutter carrier frames 2O are swung rapidly toward the work. The means for maintaining` this rapid movement of the cutter carrier frames 2O toward the work and for stopping the same at the proper time will now be described with reference to Figs. 38 and 39. Mounted on the end of the rod 60 is a block 59, which is in engagement with the lower end of a lever 58 pivoted in a recess in the work head 14 of the machine The upper end of the lever o8,

as shown in Fig. 39, is provided with a V-shaped notch 58a. When the rod 60 is thrown to the right by the engagement of the bolt 43 with the lever 61 in the manner described, the upper end of lever 58 is rocked to the left and the notch 58a is engaged by a \l'-shaped projection 57 on the lower side of a longitudinally movable bolt 57, which is moved outward normally by means of a spring 57a. The engagement of the project-ion 57h with the notch 582L holds the rod 60 in the position to which it has been moved by the lever 61, so that clutches 39 and 41 are held together and rapid movement is given to the cutter carriers. When, however, the cut-ter carrier 19 in Fig. 39 is near to the stock, one of aiseries of pins 19a on said carrier contacts with the outer end of rod 57 and pushes the same inward, whereby projection 57b leaves the notch 58EL of lever 58, and a spring 61a, which surrounds the rod 60, forces said rod to the left in Fig. 18, whereby the tension exercised by arm 60 on spring 46b is released and the clutches 39 and 41 become disengaged, so that the fast movement of the lower shaft 48 through Edrum 44 is stopped and the carrier frames 2O are fed toward the work at the normal slow' speed of the lower shaft 48. 1t will be understood that the spring `43 which backs the bolt 43 is stronger than the spring 46h, which backs the bolt 45, so that the spring 43 will overcome the spring 46b when bolt 43 is in contact with bolt 45, as previously described.

The devices for mounting and securing the cutters in the chambers of the cuttercarrier or cylinder 19 are illustrated in Figs. 3() to 3G. These devices permit the cutters `to be shifted along` the axis of their chamber to any position desired. rFhe chambers vin the cylinder extend lengthwise of the same and open out at the end of the cylinder so that the cutters may be drawn out when detached or freed. The chamber is undercut, or is rather more than one half of a circle in cross-section, and it extends to such a length that the cutter may be shifted along the same through the full operative or working space of the machine. Thus, where the cylinder has a plurality of chambers, the several cutters therein may be set in different operative planes. For securing a cutter, 81, in place, it is mounted on a bolt, 78, having a conical part, 79, and on its end, a nut 80 (Figs. 30 and 31). The cutter or cut.- ters, shaped as desired and of general ringlike. forni, are slipped on the bolt, on which is also slipped a securing collet 82, which lits normally rather snugly in the chamber in the cylinder and has in it a. conical aperture through which the coned part of the bolt passes. This collet is cut, as seen at 82a in Fig. 32, so that it may expand on the bolt and thus fit tightly in the chamber when the coned bolt is driven into it by the nut. Next to the nut is a coned colle-t 83, the cutters being embraced between these collets 82 and 83. This'last named collet may be cut, as indicated in Fig. 36, or be left uncut. Figs. 30 and 33 show the cut, coned rings 84, which are slipped on the bolt and eneoned apertures in the cutters and the collet 82. Then the assembled parts-as in Figs. 30 and 31-are slipped. into the chamber in the cylinder 19 and the nut 8O screwed up the collet 82 will be expanded into the chamber in a manner to hold the cutters where set. By loosening the nut the cutters may be shifted in the chamber or wholly withdrawn. The ring-like cutter may also be slitted or cut radially so that it can expand. rl`his is shown in Fig. 36. rlhe turret 1.6 is, in itself, of substantially the usual construction, and its use will depend on the kind of work to be done. 1f the article operated on is to be drilled axially, or otherwise so formed that the turret may be brought into play, the latter may be so coupled as to operate automatically; it is mounted t0 slide longitudinally of the machine, to and fro, for advancing to the Work and receding therefrom, and is mounted to be rotated axially so as to bring ditl'erent tools into play. Means to loe hereinafter described are provided whereby the turret, as it moves to and fro, operates the reversing mechanism so that in ease it is cutting a screw, the article operated on may rotate bacl'cward in order to free it from the receding tap or die. The details of construction of the turret are to be seen in Figs. 10, 1l, 15, 1G and 1.7. The turret has any suitable number of holes or sockets arranged in pairs, and in rotating it makes at each turn a part revolution. It is adapted to receive cutters, drills, taps, dies and other tools, the tool being held in place by a set-screw.

'.Fig. 17 is a dissected plan of the main slide 17, which carries the turret, the position of the latter being merely indicated by a circle in this figure. Fig. 141 is a seetional, fragmentary View of the slide in the same plane as the aXis of the gage-Wheel G5. Fig. 10 is a fragmentary section showing the mechanism for operating the turret. Figs. 15 and 16 are a plan and end View of the lug-slide GS, detached.

On the caurdrum tl (Figs. 1S and Q0) are cams, l-t, which impart the reciprocating movements to the main slide 17, engaging a lug 68 on the lug-slide 68. This latter is mounted in the main slide 17, and a flange or part thereof is engaged by a rocking detent G7 (F 14e), this latter being mpinged upon by a spring-bolt U6 in the main slide. Under certain conditions this bolt is held against yielding, and this holds the detent 67 rigid so that the cams 4st operate the main slide 17; but il'l the bolt (5(3 be left free to yield, the detent G7 will rock and the turret and its main slide will not be reciproeated. This regulation is effected by the gage-wheel G5, which has live radial studs h, and tive depending studs (35c in its underside. Then one of the studs (35 is in the path of the bolt 6G, the latter cannot lyield and holds the detent G7 against rocking; the lug-slide (SS then moves the main slide 17 and the turret. There is a gage-stop 65 on the frame and set in the path of the radial studs (35", so that, when one of these impinges on the stop the gagewheel is rotated far enough to move the stud (35C out of the path of the bolt (3G and allow the lngslide GS to pass the detent G7 by rocking the latter. rlhis leaves the turret stationary. A spring hook GS" (Fig. on the top of the lug-slide GS engages the depending pins in the gage-wheel and rotates it.

G5 is a frictional spring brake on the wheel. 55 to prevent accidental rotation.

In the main slide 17 is a spring bolt (tt, which enters a recess in a pendent flange on the base of the turret and serves to lock it l against rotation and also to accurately posi tion it. There is a cross lock-bolt Gil behind the bolt (311-, and these bolts are moved respectively by rockers (ltl and ft", which are themselves acted upon in succession by a fixed block (31151 on the frame.

The turret is rotated by a rocher 18, mounted in the :frame under the slide and backed by a spring tft, secu in Fig. 10. The, nose or the upper end ol this rocker engages one of any suitable number of depending studs lo on the turret and when the turret is moved with its slide. the rocken nose engages one of said studs and rotates the turret a part way around. lv'hen it is desired to render the recher inoperative, this is done by means of a manually operated crank-pin which engages a slot or recess 1S in the rocker, seen in Fig. l0. lt may be explained with respect to thisl ligure, that the section through the main slide 17 is taken in the plane ot' the turret-axis while the section of the, frame below is taken in. the plane ot the rocker 1S. ll'ence the slot in the slide 17, in which the rocker 1S plays, does not appear in Fig. 10, but is clearly seen in lig. 17.

The reversing or shifting apparatus operated from the turret through the head (55) thereon, will now be briefly described by reference to Fig. 1. The shifting rod 73, before mentioned, is coupled by a head 72, to a rod 70, 71 which extends through a guide at the point ll, and through a guide at (59 on the turret. As the turret moves forward, or toward the head 1l, its guide (it) impinges on an adjustable stop-collar 7()4l on 70, and shifts to reverse, and as the turret moves outward its guide ultimately impinges on a similar stop-collar 7U". and again shifts to go ahead. As the shift' requires considerable movement of thc sliding rod, and as this must be ellected quickly, there is spring plunger 7-l in the head 111-, which has pivotally mounted on its upper end a finger 75, the upper end of the latter engaging the lower side ot' the rod 70. This device when carried a little beyond its center by the movement oi the turret', suddenly arts to shift the clutch-device, as will be readily understood. it setscrew 77 at 'il may be employed to hold the sliding rod in any position desired and a hand-lever 7G serves to eflect the reversing by hand if required.

lt may be wcll to explain here how the shaft -18 may be driven rapidly from the shaft 7, through the gear wheels seen at the right in Fig. 1, when the shaft i,t8 is driven normally from the worm --l-f). lhen the clutch-member 3S) is made to engage with the member 'l'l on the drum dit, thus coupling the latter to the shaft 7, a gear whecl fl-ll on the drum drives through an intermediate fl7", a spur wheel 17 on the shaft -fl-S. (See Figs. 1 and :10). On this shaft (at the left in Fig. 1) is keyed a spur wheel 48L which gears with a pinion 48D fixed to a stud wheel 48C, this latter gearing with a pinion 48d (Fig. 13) on a sleeve 68a rotatable on the shaft 48. This sleeve carries one member (seen above in Fig. 11) of the slipclutch G2, the other member of this clutch (seen below in Fig. 11) being carried by the worm-wheel 63, and backed by springs. lVhen the worm 49 is the driver the shaft 48 is driven slowly through the clutch, the sleeve and the gear-wheels described; but when the shaft 4S becomes the driver, the driven clutch-member slips over the other and the worin-wheel G8 still rotates slowly. Referring to Fig. 21, when the member 39 is engaged with the member` 40 the cutters are at work, and when said member 39 is engaged with the member 41, the cutters are disengaged and the parts are operating rapidly to get into position for the cutters to again operate.

At S5, in Figs. 1, 1S and 20, are seen gears for operating the drum 44 by hand, if required. rl`he mechanism may be mounted in any suitable frame S9, and there may be a tray or pan 90 to catch the oil which drips from the machine.

Respecting the operation of the jaws Q9 which feed the stock through the spindle, it may be stated that they have their fulcrum pivots disposed between their serrated faces and at their outer ends which keep them pressed yieldingly against the stock. This causes the serrated faces to turn in a curve with a very short radius and effects a quick bite on the stock with very little lost motion.

The general operation of the machine will be understood from the above description; but it will be proper to say that the opera: tion will depend in a measure on the work to be performed. The purpose or object is to produce, automatically, with the machine a number of like articles which may be turned from a rod of metal or stock, and cut olf as finished. Suppose for example it is desired to produce a number of ornamental, turned articles, each two inches long, and capable of being formed from a rod threefourths of an inch in diameter. Suppose also that the design requires five cutters, set to operate successively along the two inches of length of the article. The machine is set to operate as desired; the proper cutters are set in the cylinder 19; a bar or rod of stock is placed in each hollow spindle-if two spindles be used-and the machine set in motion. rl'Che stock is fed and clamped automatically; the cutters advance and make the cuts, operating successively, the last one cutting off the finished piece. 1n this case the pawl 35a at the friction box D, will be so set as to provide tive operations of the cutters to one operation of the feeding camdrum 9, as has been explained.

One characteristic of the present invention is the fixed head disposed between the two cutter cylinders, and the dies or worksupports 15, mounted in opposite faces of the head. The head and work-supports eX- tend the entire length of the working iield or limits of the several cutters in the cylinders, so that however the cutters may be shifted in their chambers, or whichever cutter may be put in operation, it will always bear on the stock at a point where the latter is backed by the work-support. This enables the machine to be employed on certain work which cannot be done where the stock being operated on projects beyond the support or head.

From inspection of the lower portion of Fig. 17, it will be seen that the block a is secured by a bolt Gf in an undercut slot 65g, so that by loosening the bolt 65E, the block 651 can be adjusted along the slot 65g, whereby to rotate the wheel 65 at any desired point.

Having thus described my invention, I claim- 1. In a forming machine, the combination with the cutter-cylinders and cutters, the operating cam, and the rocking frame carrying said cylinders and operated by said cam, of means for regulating the depth of the cut of the cutters, said means comprising a gage-wheel rotatively mounted in the frame carrying the cutters, and a hinged arm on said frame interposed between the gage-wheel and the operating cam, substantially as set forth.

Q. In a forming machine, the combination with the cuttercylinders rotatively mounted in a rocking frame, the said frame, the cutters in the cylinder, and the shaft and cam for feeding the cutters up to their work, of the hinged arm 20C on the frame, the roller 2Gb on said arm for the cam to bear upon, and the gage-wheel 86, rotatively mounted-in the frame and provided with radial studs in its periphery, said studs being adapted to take behind and bear on the back of said hinged arm, substantially as set forth.

3. 1n a machine for the purpose specified, the combination with the cutter-cylinders and cutters, the rocking frame 2O in which said cylinders are mounted, the hinged arm 20C, provided with a roller 20", and the gage-wheel 86, provided with studs in its periphery, said wheel being mounted in the frame 2O and adapted by rotation to bring said studs to bear in succession on the back of the arm 20C, of a rotating cam adapted to bear on the roller 2Ob for bringing the cutters up to their work, and automatic means for imparting intermittent rotation to said gage-wheel, substantially as set forth.

l. A machine for the purpose specified, having two parallel spindles for carrying the stock, means for rotating said spindles and feeding the stock, a fixed head disposed within the space between the prolongations of the axes of said spindles, two vvorlesupports mounted in the respective opposite faces of said head, two cutter-cail` riers disposed opposite to the respective work-supports and movable up to and from the same, said work-supports extending throughout the entire working fields of the said cutters, and means for moving the cutter-carriers up simultaneously to the work.

5. In a machine for the purpose set forth, the combination with a cutter-cylinder or holder having a chamber to receive a cutter, and the said cutter, of a conical bolt which extends through said cutter, an expanding collet on said bolt and occupying said chamber, and a nut on said bolt.

6. In a machine for the purpose specified, the combination with a cutter-cylinder or holder having in it a longitudinal openended chamber for the cutter extending throughout the operative space of the machine, of a cutter in said chamber, a tapei-ed bolt which extends through said cutter, an expanding collet on said bolt to tit in said chamber, conical friction collets to hold said cutter firmly on said bolt, and a nut on said bolt to draw the parts together.

7. A forming machine having two spindles for the stock abreast and at substantially the same level, two stock-feeding mechanisms, a fixed head disposed between the prolongations of the axes of the spindles, hardened steel work-supports mounted in the respective outer faces of said head, and two sets of cutters and their carriers disposed oppositely to the respective worksupports.

8. A forming machine having two spindles for the stock, abreast and substantially at the same level, oppositely facing work supports disposed between the prolongations of the axes of the spindles, two movable cutter carriers having cutters disposed opposite the work supports, said work supports extending throughout the entire working fields of said cutters.

S). A forming machine having an adjustable cutter carrier, means for moving said adjustable cutter carrier toward and from the work, automatic mechanism for operating said adjustable cutter carrier to bring different cutters into operative position, automatic means for moving said cutter carrier rapidly toward the work, and means operated by said cutter carrier for stopping said rapid movement.

l0. An automatic screw machine having a turret mounted upon a slide, a drum provided with permanent cams of uniform throw, and means intermediate the drum and the turret slide adapted to automatically interlock and release the turret slide at a predetermined point.

In witness whereof I have hereunto signed my name this 3d day of August, 1900, in the presence of two subscribing witnesses.

JAMES D. MATTISON.

Witnesses:

HENRY CONNETT, PETER A. Ross.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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