US834359A

US834359A - Automatic lathe.

Info

Publication number: US834359A
Application number: US21774304A
Authority: US
Inventors: John Buckley
Original assignee: GEORGE H BENJAMIN
Current assignee: GEORGE H BENJAMIN
Priority date: 1904-07-22
Filing date: 1904-07-22
Publication date: 1906-10-30
Anticipated expiration: 1923-10-30

Description

PATENTED OCT. 30, 1906.

y vJ..BUCKLBT.

AUTOMATIC LATHE.

APPLIQATION FILED IULY22.190-4.

9 SHEBTSTSHBET 1.

Y Nm A mm .AA .M. N.%\/. QNMLIH ..9 0% m w v v@N T v T R/WV o m d n m w @www www@ ATTORN EY PATBNTED 00T.' 3.o,4 190e. I

J, BUGKLEY. AUTOMATIC LATHB.

APPLICATION FILED I ULY 22. 1904.

9 SHEETS-SHEET 2.

, PATENTED OCT. 30, 1906.

J. BUGKLEY. AUTOMATICl LATHE.

APPLIGATION FILED JULY gz. 1904.

9 SHEETS-SHEET 3.

'w|TNEssEs:

PATBNTED 00T. ao, 190e.

J. BUGKLEY. l AUTOMATIC LATHE.

'APPLICATION FILED JULY22. 1904.

WITNESSES: v L Si @2a/m No. 834,359.` PATBNTED 00T. so, 190s. LEUCKLEY.

AUTOMATIC LATHE.

l APPLICATION FILED JULY 22.1904.

9 SHEETS-SHEET 5.

No. 834359. BATENTED 00T. so, 190e.

J. BUGKLEY.

` AUTOMATIC LATHE.

APPLICATION FILED JULY 22.1904.

' 69 194 M3202 4my. 03 u Fl Gr.17.

lNVENTOR W T' 02W l A a I 252. :Q I `ATTONEY PATENTED 00T. so, 1906.

J. BUCKLEY. AUTOMATIC LATHE. AHLIOATION FILED JULY22.1904.

9 SHEETS-SHEET 8.

PATBNTED oo T. so, 1906.'.

J.- BUCKLEY. AUTOMATIC LATHE.

APPLICATION FILED JULY 22, 1904.

' s misma-sum1 9.

lNVENTOR vllTNEssEs: k

' To all whom it may concerm UNITED sTATEs PATENT OEEIOE.

JOHN BUOKLEY, OE WATERBUEY, OONNEOTIOUT, AssIGNOE OE ONE-HALE To GEORGE H. lBENJAMIN, OE NEW YORK, N. r.`

- AUTOMATIC; LATHE.

Specification of Letters lPatent.

Patented oct. 3o, 1906.

i, Application filed July22, l1904. Serial No. 217.743.

Beit known that l, JOHN BUOKLEY, a citizen of the United- States, residing at Waterbury, county of New Haven, State of Connecticut, have invented certain I:new and useful Improvements in Automatic Lathes, of

l which the following is a specification.

My invention relates to a lathe which may be employed for turning or screw-cutting, as

desired.

Broadly stated, my invention consists in a lathe in which the cutting-tool is first adjusted to the work, then makes a cut, then is au- ,i tomatically moved from the work, returned to its first position, and fed forward to the work, such tool making. successive cuts until the material acted upon is reduced to the required size (turning) or has formed in it the' required screw-thread, as previously determined and which the machine has been adjusted to produce. .4

My invention further consists in a con- -struction by reason of which the lathe is made adjustable for cutting right or left hand screws of any desired-length, pitch, or depth of cut.v I

My invention further relates to various details of construction, which will be described in the specification and specifically pointed out in the claims. j

The object of my invention is a lathe in which the work the lathe is designed'to do may be automatically carried on from start to finish or controlled by hand, and, further,l

which may be adjusted to cover a Wide range of work and doa great variety of work en.-

' tirely automatically, thus permitting the use of unskilled labor or a skilled lathe-tender to tend a number of lathes simultaneously.

The general"` operation of my improved lathe is as follows: The tool is first adjusted to the work. `The tool-carriage then carries the tool to make the first cut. The tool is then automatically withdrawn from the work and carried back by the reverse movement of the tool-carriage to itsfirst position, the movement of the tool-carriage at such time being y of out is reached, at which time the machine is automatically thrown out of action and comes to rest.

The lathe is adjustable and may be controlled by hand for cutting right orleft hand screws. j

The lathe is also adjustable for turning work con-trolled by hand or automatic mechanism. y

The speed of lead-screw can be changed, also the direction of rotation, or it can be thrown out of action, leaving the spindle free to be used for finishing work.

Figure 1 ofthe drawings is a side elevation of my improved lathe with the means for driving it adjusted to automatically cut a right-hand screw-thread. Figs. 2 and 3 are details of a portion of the automatic device adjusted for cutting a right-hand screw. Fig. 4 vis a similar view when adjusted for cutting a left-hand screw. Fig. 5 is a side elevation of. a vportion of the lathe with the parts in position when the limit of out is reached. Fig. 6 is a detail of a clutching device on the lathe-spindle. Fig. -7 isa detail of a rock-shaft operated yby the tool-carriage. Fig.- 8 is an end elevation of the lathe. Flg.

9 1s a transverse sectional view on the lineA 9 9'of Fig. 5. Fig. 10 is a detail of an adjusting device for changing the speed of the leadscrew. Fig. 11 is a transverse sectional view on the line 11 11 of Fig. 5. Fig. 12 is a de tail elevation., partly in section, showing the vdriving and speed-changing gearing. Fig.

13 is a sectional plan View on the line 13 13 of Fig. 5. Fig. 14 is adetail of an adjustable slide for adjusting the speed of the leadscrew. Fig. 15 is a detail of a reversingclutch for changing the direction of rotation of lead-screw. Fig. 16 is a detail of a portion of the devicefor withdrawing the tool from the work, tobe used for internal cutting. Fig. 17 is a sectional plan view on the line 17 17 of Fig. 5. Fig. 18 is a detail of the means for changing the speed of the lead-screw. Fig. 19 is a detail of adjusting device for changing the speed of lead-screw. Fig. 20 is a sectional plan view on the line 20 20 of Fig. 5. Fig. 21 is a sectional view on the-line 21 21 of Fig. 20. Fig. 22 is a sectional view on the line 22 22 of Fig. 21. Figs. 23, 24,' and 25 are perspective views showing different positions of the parts shown in Figs. 21-and.

Ioo`

22. Fig. 26 is an enlarged sectional view on the line 26 26of1 Fig.' 13. Fig. y27 is an enlarged sectional lan view of aportionof the tool-carriage. `ig. 28 is a sectional view on the line 28 28 ofl Fig. 26. Fig. 29 is a sectional view on the line 29 29 of Fig. 26. Y Fig.

30 is a sectional view on the line l30 30 lof Fig.

26. Fig. 31 is a detail of adjustment of parts for turning work. Fig. 32 is a detail of an adjusting device to be used forturning work. y

-Secured to counter-shaft 1 is -a cone-pulley'2,which,-throug'h belt 3 ,drives the-conepulley' 41,- loosely mounted on ,thel spindle 5' ofl the lathe. Upon the shaft 1 is a bevel lgear-vheel 6,-rotatedby the shaft by means of a slot 7 and-key in the gear-wheel and capable of being thrown into mesh witha bevel'4 gear-wheel- 8,.secured to a pulley 9,

which by means of belt 10 drives another 'ivlglit to gear-wheel 18', secured to spindle 5.

en desired,clutch device 17 can be withdrawnfromgear-wheel 1'8 and the back gearwh'e'el 19 thrown-into engagement with gearw'heel 16v by means of eccentric 20, Fig. 8, causing the spindle 5 to be drivenf at a slower speed throughthesleeve 21 and small gearvwheel 22,- meshing with gear-wheel 23,v secured? to'the'spindle. By means of the usual attaching devices 24 the work 25 is secured to spindle 5. 4

Meshng 'with gear-wheel 18 is a small gearwneel 2'6, with abroad face. IOne portion of gear-wheel 26 meshes with a gear-wheel 27, turning loosely on a shaft 28. The other portion meshes witha small gear-wheel 29, secured to' a sleeve 30, to which is secured another small gear-'wheel 31,- meshin with a gear-wheel 32, turning loosely on sha t 28, by which means a collar 33,ope1ating'a clutchlever 34, pivoted in aslnt formed in the shaft @28, will cause the shaft to be turned in one direction or the other, according to which-of the `gear-v\`rheels 27 or 32 is engaged by clutchlever 34, Fig.

Gear-wheel 26 and the sleeve 30, havinV the gears 29' and 31 attached, are mounte upon a frame 35, which is pivoted upon the shaft 28'. A pvoted' connection 36 to the frame en| ages the head-stock 37 by the notches' 38, y which means the gear-wheel 26 can be held in mesh with gear-wheel 18 or thrown out, leaving the spindle free for finishing work.

' Upon the outer end of shaft 28 loosely mounted a cone series of gear-wheels 39, and a sliding'key 40 is fitted in the shaft and lwith gear-wheel 43. ibeing rocked upon the shaft 42 in or er that adapted-to engage any one ofthe ears 39, which being in mesh with gear-w eels 41 turn shaft 42, to which gearrwheels 41 are secured. A gear-wheel 43 is. turned by shaft 42 by means of a slot formed in the shaft and `alrey in the gear, which can be worked along the shaft by means of a frame 44, which carries gear-wheels and 46, which are in mesh Frame 44 is ca able of the gear-Wheel 45 may be placed in mesh with any one of a coneseries ofgear-wheels 47, secured' tol shaft' 48, or' that the gear- Wheel546-may be laced in mesh with-any one of a cone seri' es o gear-wheels 49 ,secured to shaft 50. A slot' 51X is forlnedin frame44, in which rides a pin formingpartofa slide 52, in which is iitt'edv an adjustable pin153, which when fitted in onecf aseriesof holes 54 cause the gear-'wheel 46 to engage'one of- -the gear-whee s 49, or if fitted intoone off a-series of holes cause the gear-wlieel' 45 to en age one' of the gear-whee s 47.

f the pin1 53 be placed? midway between the holes 54 and 55,-then the gear-wheels- 45 and 46 do not engage with the gear-wheels 47 and 49.- Frame 4-4' is then free to be moved alon the shaft 42, slide-52 being heldin` the mid le yposition by a spring-pressed pin 56, fitting in a recess formed inthe slide. Pin 56 is' fitted in -a' slide 57, which serves as a gu'ide for the slide 52 and which isguided by an inclined slot 51, the series of holes 54 and 55 being alongside and parallel. The inclined' position of the holes and slot correspends-with the-position of the gear-wheels 45 and 46 when in mesh with the different gear-wheels"fo'rxningV thecone-

gears

47 and 49. Shaft 48 has a gear-wheel 58 secured to it, which can be put in meshwith a sliding adjustable gear-w eel 59 on a stud-shaft 60, gear-wheel 59v being at such time in -mesh with a gear-wheelA 61, secured' to a smaller gear-Wheel 62, provided with a clutching device 63, Whch at this time is thrown out, leaving the ear-

wheels

61 and 62 free Ito turn on` the s aft 50. Gear-wheel 62 being in mesh with a large gear-,Wheel 64, having the adjusting device 65, drives the leadscrew 66. t a slow seed., or gear-wheel 64 can be thrown out c ar with gear-wheel 62 and gear-wheel 67, aving the' adjustin device 68, thrown into gear with gear-whee 61, causing the lead-screw to be turned at a greater speed. The lead-screw is turned b gear-Wheel 67 by means of a slot inthe lea screw and a key in the gear-wheel. When the gear-wheel 59-is thrown out of mesh with the' gears 58 and 61 'and the clutch. device 6-3 thrown in, then the lead-screw is driven b the sha-ft 50' by either one of the gear-whee s IIO 61 and' 62, according to the position of the gear-

wheels

64 and 67. 50, to whichv are secured the cone series of gear-

Wheels

47 and 49, serve to drive the The shafts 48 and larger than gear-Wheels 49.

I cranks coming in contact with the si'des of gagement with gear-wheel 16, causing the.

speeds, accordingto gear-wheels 47 being vBy removing gear-wheel 62 from gear-wheel 61 and placing it on the lead-screw 66 and .by removing gear-wheel 64 from lead-screw and attaching it to gear-wheel 61 another change can be Ilpade in the speed of lead-screw, as shown in ig. 18.. l

The lead-screw 66, turning'in split nut 69, moves the tool-carriage and apron 7 0 toward the head-stock, when adjustment is made for cutting a right-hand screw-thread. A bellcrank 71 is pivoted to the end of apron toward the head-stock and a similar one 72 to the opposite end, the upper vend of belllead-screw at different which is in gear, the

corresponding toothed wheels 7 3 and 74, .adjustab y secured 'to oppositel ends of a rockshaft 75, causing the lower end of bell-cranks to rise, which, taking under the tooth of

wheels

73 and 74, willv give the rock-shaft a Ipartial rotation as the carriage nears the cad-stock and as it nears the 'end of its re`-' turn movement. This shaft 75 through interme be described, withdraws artial rotation of iate mechanism, to clutch 13 from entool-carriage to come to a standstill.

Rock-shaft 75 has a slot 76 extending its entire length, which serves to turn a gear-segment 77, having a key to fit the slot and moved along the shaft by the apron. Gear-segment 77 is in mesh with a bevel gear-Wheel 78, to which is attached a bar 79, upon one end lof which is connected a link 80, connecting it to a gear-segment 81 in mesh with a gear-wheel 82, secured to a shaft 83, on the other end of which is secured a gear-wheel l84, which by means of the racks 85 operate the jaws of the split nut 69. By the means above described t e split nut 6'9 is thrown out of engagement with the lead-screw when the end of cut is reached. Split nut 69 can also be controlled by means of hand-crank 86, which is secured to shaft 83. There are two gear-segments 77 adjustable in the apron 70, so that one segment will be in engagement when adjustment is made for cutting a right-hand screwthread, the other gear-segment 77 being in engagement when adjustment is made for cutting a left-hand screw-thread. The gearsegments 77 can be adjusted in a central por sition out of engagement with gear-wheel 78, in which case split nut 69 will not be operated by rock-shaft-75, but can be operated by the hand-crank 86. I

Tothe upper end of bar 79 is adjusted a pin 87, engaging the slotted end of a pivoted ever 88, the opposite end of the lever being provided with a movable portion 89, having adjusting-screws 90, which take against one arm of a bell-crank 91, pivoted upon a shaft 92, the other endvof the bell-crank carrying a double-ended pawl 9 3, capable of adjustment for additional cut.

by means of a spring-pressed pin 94, to engage a rachet-wheel 95, formingjpart of a short screw 96, to move it in one direction or the other. Screw 96 works in a nut 97, havinga pin 98, which rides in a spiral slot 99, formed in the removable part 89 of the lever 88. The spiral slot and the pin cause withdrawal or advance of the nut 97 and shaft 92 when the lever 88 is swung on its pivot. Shaft 92 has a shoulder against whichv the screw 96 bears, the shaft extending through the screw, bell-crank 91 being pivoted upon the shaft and held against the opposite end of screw 96 by a hand-crank 100, secured to the shaft. Shaft 92 can be turned by the hand-crank 100 and by the cross-feed gearwheel 101 by means of. a slot formed in the shaft and a key in the gear. The other end stock 102, carrying the tool 103. The tool 103- is `adjusted to the work by turning the screw-shaft 92 and hand-crank 100, the screw-shaft being held in position by screw 96 yand nut 97.

When the tool-carriage reaches the limit of its cut, part 89 of pivoted lever 88 will be moved from the osition shown in Fig. lfin the direction of t e arrow shown in Fig. 5, in doing which slot 99, acting on pin 98, vwill withdraw nut 97 from the tool-carriage, carrying tool 103 with it. set-screw will move bell-crank 91, causing pawl 93vto turn screw 96, forcing tool in for an additional cut. j

When adjustment is to be made for interof shaft 92 is screw-threaded into the toolnal cutting, the removable part 89,'(represented by Fig. 16,) having the slot 99 inclined. in the opposite direction from the one used for external cutting, xwill be attached to pivoted lever 88 anddouble-ended pawl 93will 4be adjusted to `turn ratchet-wheel 95 and 'screw 96 in the opposite direction, resulting yin a reverse movement of tool 103.'in withdrawing it from the work and feeding it in4 y When the art 89 is removed, the nt 97 is held in p ace by screw 104. -U on the-end of rock-shaft 75, near the hea -stock, is a bevel gear-'wheel 105 in mesh with Aa bevel gear-Wheel 106, turning upon a stud-shaft 107. Bevel gear-wheel 106 hasa weightedarm 108 attached, also a pin 109, which yextends. through a short slot 110 in a cam-disk 111, having a pin 112 extending through a short slot 113 in a segmental gear 114. On a radial line with the slot `are two

longer slots

115 and 116. Riding in slot 115 is a pin forming art of an arm- 117, secured to av sleeve 118, aving an arm 119 connected to a slide 120,y which actuates the clutch-collar 33, as shown in the drawings,l to clutch-gear wheel 27 to shaft 28. Riding in slot 116 is a lpin forming part of arm 121, secured to a shaft 122, extending through sleeve l118 and having an arm 123, connected by the bar 124 to a pivoted lever IOS l radial line with slot 126 are the two longer,

slots

127 and 128. Slot 127, operating arm 117, serves to kee clutch-collar 33 in a position to `cause the ead-screw to rotate in the opposite direction, forcing the tool-carriage .away from the head-stock. vSlot 128,

` operating arm 121 serves to. throw clutch- Sie - 140'.l Mounted loosely upon shaft 141 next vto arm 142 is a gear-wheel 146, driven by a 4can engage the notches 138.

collar13 out of engagement with gear-wheel 16 when the tool-carriagenears the. end of its travel away from the head-stock.

When cutting right or vleft hand screws without using the automatic device, in 109 will be fitted in a hole 129: Qn a ra ial line with hole 129 are the two

long slots

130 and 131..` Slot 130, operating arm 117 serves to change the direction of rotation .ofleadvscrewA when

disk

1,11 is rotated. Slot 131,

operating arm 121, serves to keep clutchcollar 13 in eng-agement with gear-wheel 16. As the bevel gear-wheel 106 with the pin 109 "rotates, the d1sk 111 does not rotate until the limit of short slot 110 is reached. Then the disk rotates luntil the pin 112 on disk reaches the limit of short 'slot 113' of segmental gear 1 14. The movement of disk 1 1 1 and segmental gear 114 is continued by pin-109 on bevel gear-wheel V106 -from bevel gear-wheel 105 until-the, weighted arm 108 passes over the center, which takes place when the center of long-

slots

115 and 116 are just over the center of gearwheel 106. It is during this movement ol disk 111 thatO clutch 13 is .thrown out of engagement with gear-wheel 16 by means of long slot 116.

When the weighted arm over the center,- it then serves to continue the rotation of disk 11.1 `and gear-segment 114. vGear-segment 114 is in mesh with a gear-wheel 1.32, secured to a shaft.133, to` -which is secured a cam 134 and a gear-wheel 1135 in mesh with a gear-wheel 136, having a rim 137 with twov notches 138 on one sideoic it and. a'rim 139 with two notches 140 on the oppositev side. The rim gear-wheel 13 6 is mounted loosely upon a shaft 141 and keyed l to the-shaft inside the rim 137 is an; arm 142,

having a spring-pressed plunger 143, which Inside the rim 139--is-angarm'144, keyed toshaft 141, extending radially at 'right angles to the direction-of arm 142 and having a spring-pressed plunger 145, which can engage the notches gear-wheel 147, secured to positively-driven Gear-wheel 146 has apin 148 in Gear-wheel 146 has internal gear-teeth 149, (which mesh with a t en inthe other.

=tuates a 108 has. passed small gear-wheel 150, secured lto a Ashort shaft 151, u on the opposite end of which is another sma l gear-wheel 152 in mesh with a gear-Wheel 153, mounted loosely upon shaft 141 and provided with a pin 154 in line with rim 139 and in osition to be engaged by lunger 145. P ungers 143 and 145 are eld out of engagement with the notches in the

rims

137 and 139, in lone ease by the rims, in another b fixed cams 155 and 156, which throw the p ungers out of en agement with the rims. Shaft 141 is held 1n place by an arm 157, secured yto one end and having a `spring-pressed plunger 158, which engages with notchesA 159 and 160 after making a uarter-revolution, irst in one direction, The end of plunger 158 is made tapering to allow it to esca e the notches 159. and 160 whensuicient orce is applied to rotate shaft 141. Cam`134 acpivoted lever 161 and clutch-collar 162, sliding upon a shaft 163, which is turned by meansof a slot formed in the shaft and a keyin the collar when the collar is throwninto engagement with. positivelydriven shaft 12.

By means ofa'bevel gear-wheel 164, secured` to shaft 163, meshing with bevel gearwheel 165 or 166 a shaft 167 is turned.. By means of the adjusting device 168, fitting in one of three holes 169 in Ishaft 167, the double gear-wheel 165 166 may be en aged on either side of gear-wheel 164or isengagedrom gear-wheel 164. Aslot extends through the hub of gear-wheel 165166 and a key is fixed firmly in shaft 167, the keyA being iitted to allow the double ear to be moved endwise. Bythis meansghaft 167 may be turned in either direction, which will by means to be described move the tool-carriage 4 7 0 .in one direction or the other.

`The movement of gear-segment 114 from` the position shown in Fig. 2 to the-position shown in Fig. 5 moves cam 134,romthe position shown in Fig. 423 tothe position shown in Fig. 20 and the rim gear-wheel 136'rom the position shown in Fig. 23 to the position shown in Fig. 21, the notch 138 being nearly in line with (plunger 143 of arm 142 and the -plunger hel .l

Jfrom engagement. by the rim 137.` It is at this time that weighted arm y108 comes into action to continue the movernent of rim gear-wheel 136 until notch 138 shall be in line-with plunger 143,'when the plunger will drop into the-notch. Plunger 143-,i dropping into notch 138,--is now in hne ,of travel of pin 148 on the ositively-driven gear-wheel 146, causing p unger 143, arm 142, yshaft 141, and rim gear-wheel 136 to be turned until plunger 143 is thrown out of notch 138 -by means of iiXed caml 155,as

shown in Fig. 24. This movement of rim gear-wheel 136 .will `be transmittedto cam 134, moving itrom theposition shown in Flg. 20 to t e position shown in Fig. 24, the

inclinedportion of cam-operating lever 161 to throw clutch-collar 162 into engagement with shaft 12 resulting in movement of rim tool-carriage 70. In addition to moving cam 134 the movement of rim-gear 13.6 will by means ofshai't 133 and gear-wheel 132 be transmitted to gear-segment 114 and camdisk 111, causing them to occupy the position shown in Fig. 3.

Referringto Fig. 24, plunger 145 will new,

be the one which is held Jfrom engagement with notch 140 by rim.139. Whenthe toolcarriage 70 nears the end of its. movement away form the head-stock, rock-shaft. 7'5 is rotated in .an opposite direction by 'bellcrank 72 taking under'tooth 74 on the oppo- -in line oftrave of pin 154 on.'po-'sitivelydriven gear-wheel 153, rotating in a direction the reverse of gear-wheel'146, causing plunger.145, arm 144, shaft 141, and rim gear- Wheel 136to be turned until plunger 145 is thrown out of notch 140 by means of fixed c am 156,- as shown in Fig.l 23,-cam 134.being .moved from the-position shown in Fig. 20 tov 4theposition-shown in Fig. .23, the straight portion of cam having no effect `u on'lev'er 161, gear-seg1nent 114 andv cam-dis 111 being movedto the positionshow'n lin Fig. 1.

The purpose vof elongatingv the. hole 113 in segmental gear 114 is that disk 111 will be a little behind in driving ear-wheel 132, causing the spring-pressed p ungers to be delayed in dropping in the notches-'of rim earwheel 136 as weighted arm'108 passes "t dicular. This intermission gives time for stop-motion work. i

When adjustment is-made for cutting lefthand screws with vcam 134 in the positionA shown iniFig. 24,v arm v14.4 will be turned to the position shown in Fig. 21, as shown in' Fig. 25.A As the tool-carriage 70 nears the headstock on'its'return to m'ake a new cut cam 134 willI be moved in the direction of arrow in 25, the inclined portion of cam.

moving lever 161 tostop the tool-canjiage.

The action of rim gear-wheel 136, plfn ersl 143 and 145, and gear-se ment 114 and iskI 111 is the -same as that escribed for Figs.' 21

and 21 except that lon slot 12.7, through 'arm 117, causesthe lea -screw tol rotate in 'the opposite direction and `that'long slot 128,

through arm 121, throws clutch-collar 13 l. .into engagement -With gear-wheel 16 in the shaft 167 bevel gear-wheel 165 will be e perpen.-

last part of movement of disk 111 to cause the rotation of lead-screw.

Changing the direction of rotation of lead- 'i screw causes the tool-carriage to be moved away from the headstock in making the cut,

and in order that the tool-carria e shall be returned toward the head-stocky y means of put in mesh with bevel gear-wheel 164.

When the automatic mechanism isnot in` use, b evel gear-wheel onthe counter-shaft'l is disengaged from gear-wheel 8 the disk 1 11 is turned so that pin 109 on gear-wheel 106 can be inserted 1n hole 129 of the disk, weighted arm 108 is removed from gearwheel l106, and gear-wheel 132 is withdrawn from meshwith segmental-gear-114. When gear-'wheel 132 is replaced, .marked tooth.1

of segmental gear'1-14` will. occupy space 1 of gear-wheel'132 for right screw-cuttin or marked tooth 2 of segmental gear 114 wi l oecupy space 2 of gear-wheel 132 for left-hand screw-cutting.

When camdisk .111 is adjusted for handwork, `cam 134 will be rotated'in the direc- Vtion indicated bythe arrow in Fig. 23 until lever 161 rides in straight part of cam.'y Any further movement of cam caused b rotation of disk 111 will n ot change the positionjof lever 161, as 1it will still'ride in the straight',

part of cam 134, kee clutch-collar 162 out of engagement'wit shaft 12. I

Cam-dlsk 11 1 can'be rotated by means of a hand-lever 170 on rock-shaft 75 and held in any one of three positions-central or two opposite. In one position'of disk 111,10n slot 130, through'arm 117.,"willfcause lthe cad"- screw to rotate in a direction'tocause the tool-carriage "to -move toward the 'headstock. In theV central vpositionlead-screw will not rotate. The opposite' end of long slot will cause the lead-screw to rotate" the op osite direction. Hand-lever 170,

having a e -to ride in slot 7 6 [of "rock-shaft 75, is move along the shaft bythe ftool-cairia e. A pin 171 1n the free end foflever 170 A isitted in oiie of vthree notches' 172 on thel tool-carriage, or the pin can' be thrown o'iit of engagement by' means of a spiral cam 17 3', leaving the rock-shaft 7 5 free to be moved, as before described, when the vautomatic mechanism is in use. 4Shaft 167 has a vslot174 its,- .enrtire length, which turns a bevel gearwheel 175, having'a key to ride'hin the slotand mounted on the tool-carriage 70. Bevel gear-wheel 175 meshes withI a s bevel gearvwheel 176 securedto a short shaft v177,` to

the other end of which is secured a gearwheel 178 in meshwith a rack 179 on the lathe-bed. As' shaft 167 is turned gearwheel 178 is turned, which, taking a ainst the fixed'rack 179, causes movement o the toolcarriae'70, which is much faster than when move v [by lead-screw 66.

' rod 180, which as the tool 103 is fed to the J n3" i l 834,359

' Securedy to .the tool-rest `102 is a hooked work 25 engages a-slide 181, provided with a rack 182, Which engages a. pinion 183, to Whicha segmental gear 184 is attached. 'Segmental gear 184, meshing With a rack 185, forming. part of a slide 186, causes slide 186 to move agreater distance than tool-rest 102. An adjustable bar 187 is attached to slide 186, one end having graduation-marks and supporting-a rod 188,.attachedto.a paWl 189, pivotedto the tool-carriage. One portion of the free endfof -pawl l189 is shaped to engageza tooth 190,'. the .other portion of-pawl being sha ediasa hookto engage a tooth 191 facing in.; e opposite direct1on, the teeth- 190,-and 191 formlngpart of a sleeve 192, having a key to.ride in slot.76 ofA rock-shaft '75-.and movedalong the` shaft by the tool-carria e.

When, the. :final de th of cut is reache by toolf103,l rod 188, W ich is supported. by bar 187, Will be released, throwing. pawl 189 into enga ement with the teeth 190 .and 191, of the s eeve 192. Y

AThat part off. the movement. of rock-shaft 7.5- controlled lby the yWeighted 4arm -108 is checked bythe paW1;189 engaging either tooth 190.or 1'91,.according to direction ofretationof rock-shaft. .If the rotation of rock- .shaft.7.5 is stopped before the rim gearwheel 1-36 releases .one ofithe :plungers 143 vor 145, cam 134 will 'notoperate lever 161. vand clutch 162 to cause rotation of shaft 163. lThe tool- Oarriagenot'beingreturned to make Va new cut, everythingremains at rest.

For 1 turning -.work, which may be :automatic or b hand, the device now to be described-.Wil be used.

The lead-screw 66 hasa slot 193 its entire length, which turns 1a Worm 194, having a ,key to4 rideV in the-slotand moved alongthe lead-screw by the tool-carriage. Worm. 194

turnsa Wormfwheel 195, turnin loosely upon a hollow shaft: 19.6, the Worm-.W eel being engaged-by a1frictionclutch197b means of screw-shaft 1198,'turned by the and-Wheel -199. Friction-clutch 197 turns thehollow Shaft 19.6by means of slots formed-in the .shaftand projections-from theclutch, the .shaft-19.6 having gear-wheel 200 vkeyed to it, lwhich meshes Witha large gear-Wheel201, secured to a sleeve 202,having a small gearwheel :20.3 securedto it, which meshes W1th rack:17.9,. causing theitoolvcarriage to move slowly in-one' direction or another, according'- to direction of rotation oflead-screw. Gear- .vvheel 200, keyed to hollow shaft 196, canbe turned by land-:Wheel 204, which is also ke ed to shaft 196. Friction-clutch 197 is holding-position to-be thrown in or out ofengagement with wormfwheel 195 `through serewfshaftf198 by; means of an arm 205, se-

,curedtoa shaft'- 206 intl-1e hub of. hand-wheel 199 and held in position byeatch 207, the arm 205 'riding in a groove 208, formed in the hub of hand-Wheelf204, as-shown .by -dotted lines in Fig. 32.

For turning-work, :using the automatic mechanism, friction-clutch 197 is connected bythe strips 209 to a collar 210, controlled by a pivoted lever 211, which by means of a spring 212 is forced against

cams

213 and 214, having a key to ride in slot 76 of rockshaft 75, moved along the rock-shaft and adi justed by the device 215, so thatl one cam will be in use to throw friction-.clutch 197 into engagement with Worm-wheel 195/.when the tool-carriage is to be moved in one direction,the other cam being in use when the tool-carriage is to be moved in the opposite -direction or;adjusted so that lever`211 being in the center is not operated by the

cams

213 or 214, in which case friction-clutch 197 will nt be thrown into engagement W-ith worm gear-Wheel195 by the automatic mechanism.

When the .automatic mechanism is in use, the arm 205 isthrown outof engagement -With the.v groove .208 in the hub of hand- -wheel 204, leaving the friction-clutch `197 free to be. movedbythe automatic mechanism', screW-shaft198 being held inplace by a spring-pressedpn .216,1 riding inv a. roove 217 in the hub of handheel.:199, hol ing it to the hub of hand-Wheel 204. l

For turning-Work .part 89 .is removed from pivoted lever 88 and nut 97 secured to toolcarriage by means ofscrew 104.

.Having thus. described my invention, I claim- 1. In a lathe, the combinationlwith means for .rotating the Work, of a tool-carriage, means for traveling thetool-carriage .along the bed of the. lathe in Vone direction, means for automatically-starting the work-rotating means and the tool-carriage-traveling means when the tool-carriage is atv one limit of its v.movement andA fo`r -automatically stopping said work-rotating means vand tool-carriagetraveling means when the tool-carriage is at the other limit of its movement, independent means for traveling the tool-carriage back to initial position when the means aforesaid have stopped, and means for auto- ITO matically stopping said tool-carriage-returning means when the tool-carriage arrives at its initial position.

2. In a lathe, the combination with driving means, of Work-rotating means:a toolcarriage, means for traveling the tool-carriagealong theilatheebed, 'reieasable means yfor operably connecting or disconnecting both the workerotating means and the toolcarriage-traveling means to the driving means aforesaid, a tool movable on the toolcarriage, means for determining .the final depth of cut, automatically-acting mechanism ycontrollin the releasable connecting means aforesa' ,and means for. arresting the action of the automatic; mechanism aforesaid when the final depthl of cut has been made to thereby release the Work-rotating means and the carriage-traveling means from the driving means and thus stop their action.'

3. In a lathe, the combination with a toolcarriage, and means for traveling said toolcarriage along the lathe-bed, of a tool movable on the tool-carriage, means for determining the final depth of cut', a rock-shaft operated by the tool-carriage at predetermined times, automatic mechanism controlledby said rock-shaft for automatically starting, stopping, and revelsing the travel `of thetool-carriage, and means automatically actuated when the tool has reached the final depth of cut Whichvprevents operation ofthe rock-shaft and automatic mechanism controlled thereby and thereby stops .the

, matically operating. the cam at the 'ends of the movement of vthe tool-carriage.

5. In a lathe, the combination with a toolcarriage, of a toolLholder movable thereon, means fo'r traveling'the tool-carriage in one direction along the lathe-bed, independent means for traveling the tool-carriage in the otherldirection along the lathe-bed, means for automatically withdrawing and feeding said tool-holder at'thdend of a cut comprisingva slidable cross-feedscrew, a slidable nut with which the cross-feed screw is lconnected by screw-threads, a ratchet-,Wheel connected to the cross-feed'screw, a movable cam engaging the slidable nut aforesaid, a pawl for '4 turnlng the ratchet-wheel, means carried by the carrr foroper'ating the paWl, means for releasing the tool-carriage from its advancin traveling means at the end of the cut an connecting it thereto at theA beginning of the cut, a rock-shaft operated by the carriage at Vthe limits of its movements, gearin interpoed betweenthe rock-shaft and t e cam an return feedmg means of fthe tool-carriage into and out of operative connection with the tool-carriage. I

' 6. In a lathe, the combination with a toolcarriage, of meansfor advancing said' toolcarriage along the lathe-bed, independent means for travelingit back-again, automatic mechanism comprislng a movable controlling member, means operated from said movable e nut with which 'the releasing means aforesaid, and means ,y controlled by the rock-shaft for throwing thev member for starting and stopping theadvancing feeding means of the tool-carnage at predetermined limits of the movement of the tool-carriage, means operated by said movable member for-starting and stopping -the return feeding means of the carriage at the predetermined limits of the movement of the 'tool-carriage, a pivoted arm coperatingy with said movablevcontrolling member, means acting on said armvto move it tol one side or the other of its dead-center, and means actuated by thel tool-carriage at the limits of its movement for automatically actuating said arm to thereby actuate the movable controlling member aforesaid.

7. In a lathe, the combination with a toolcarriage, of means for advancing said toolcarriage along the lathe-bed, independent means for traveling it back again, automatic mechanism comprising almovable controlllng member, means operated from said movable member for starting and stopping the advancing feeding means of the tool-carnage at predetermined limits of the movement of the tool-carriage, means operated by said movable member for lstarting and `stopplng the return feeding means of thecarriage vat the predetermined limits'of the movement of the tool-carriage, means for delaying the operation of the carriage-returnlng means until 'after the carriage-advancing means has stopped at one limit ofthe movement of the tool-carriage and forlstopplng the actlon of said carriage-returning means before the carnage-advancing means begins to operate' at the other limit of the movement of the tool- Ioo y carriage, and means actuated by the toolcarriage at the limits of its movement for automatically/ ling member. y c

8. In a lathe, the combination with a toolcarriage, of means for advancing said toolcarriage along the lathe-bed, `independent means for traveling it back again, automatic f mechanism comprising a movable controlling member, means operated from sald movable member for starting and stoppingtlle advancing feeding means of the tool-carnage the tool-carriage, means operated by said movable member for starting and stopping the ,return feeding means ofthe carriage-at the predetermined limits of the movement of the tool-carriage, means for delaying the operation of the carriage-returning means until after the vcarriage advancing means has stopped at one limit of the movement of the tool-carriage and for stopping the action ofl said carriage-returnlnglmeans before the carriage-advancing means begins to operate at the other limit of the movement of the toolcarriage, a pivoted arm cooperating with the actuating the movable control- IIO at predetermined limits of the movement of y izo` movable controlling member, means acting on said arm to bmove it to one side or they other of its dead-center, and means actuated iol ,by the tool-carriage at the limits of its movement for automatically actuating the pivoted arm.

9. In a lathe, a tool-carriage, means for traveling the tool-carriage along the lathebed, and automatic mechanism governing the means aforesaid, comprising a movable controlling member, a pivoted arm for shifting said movable controlling member, means acting on said arm to move it to one side or the other of its dead-center, an oscillatory Wheel operated by the movable controlling member and provided with engaging means,

s ing-the positively-'driven Wheel to the engag.

a positively-driven Wheel, means for clutching the positively-driven Wheel to the engaging means on the oscillatory Wheel at predetermined times to cause rotation of said oscillatory wheel and automatically unclutching said Wheels at other times to stop theoscillatory Wheel, means for automatically operating the pivoted arm and movable controlling member at redetermined times, and means controlled. y the oscillatory wheel governing the tool-carriage-traveling means.

10. In a lathe, a tool-carriage, means for traveling the tool-carriage along the lathebed, and automatic mechanism governing the means aforesaid, comprising a movable controlling member, a pivoted arm for shifting said'movable controlling member, means acting on said arm to move it to one side or the other` of its` dead-center, an oscillatory wheel operated by the movable controlling member and 'rovided with engaging means, a positivelyriven wheel, means for clutching means on the oscillatory Wheel at predetermined times to cause rotation of ,said os-` cillatory Wheel and automatically unclutching said Wheels at other times to stop the oscillatory Wheel, means for automatically operating. the pivoted arm and movable controlling member at predetermined times from the tool-carriage by the movement thereof, and means controlled by the oscillatory Wheel governing the tool-carriage-traveling means.

1,1. In a lathe, a tool-carriage, means for traveling the tool-carriage along the lathebed, and automatic mechanism governing the means aforesaid comprising a movable controlling member, la pivoted arm for shifting said movable .controlling member, means acting on said arm to move it to one side or the other of its dead-center, an oscillatory wheel operated by the movable controlling member and provided with engaging means, oppo- 'sitely-rotating positively-driven Wheels, independent devices for clutching the respective positively-driven Wheels to the engaging means of the oscillatory Wheel at different predetermined times according to the direction of movement of the oscillatory wheel to cause rotation of said oscillatory wheel and automatically unclutching the respective positively-driven Wheels from the oscillatory Wheel at other predetermined times to stop carriage-traveling means according tothe direction of movement of the oscillatory Wheel.

12. In a lathe, a tool-carriage, means for traveling the tool-carriage along the lathebed, and automatic mechanism governing the means aforesaid comprising an oscillatory Wheel having rims provided with notches,-oppositely-driven wheels, inde endent plungers normally restrained by t ie respective rims aforesaid but adapted to drop into the notches to move 'with the oscillatory Wheel, means on the oppositely-driven Wheels for engaging the plungers alternately at predetermined times When in the notches, means for releasing the plungers from the notches at predetermined times, means for' actuating the oscillatory Wheel at different predetermined times in opposite directions, and means controlled by the oscillatory Wheel to alternately stop and start the tool-carriagetraveling means according to the direction of v movement ofthe oscillatory wheel.

' 13.j In a lathe, a tool-carriage, means for traveling the tool-carriage along the lathebed, and automatic mechanism governing the means aforesaid comprising an oscillatory Wheel having rims provided with notches, oppositely-driven Wheels, inde endent plungers normallyV restrained by t c respective rims aforesaid but adapted to drop into the notches to move with the oscillatory wheel, means on the oppositely-driven Wheels for engaging4 the plungers alternately at'predetermined times when in the notches, means for releasing the plungers from the notches at predetermined times, means controlled by the tool-carriage at predetermined times f or actuating the oscillatory Wheel in opposite directions, and means controlled by t c oscillatory Wheel to alternately stop and start the tool-carriage-travelingl means according to the position of the tool-carriage.

In testimony whereof Iaflix my signature in the presence of two witnesses.

' JOHN BUCKLEY. Witnesses:

AMBRosE H. BUCKLEY, CHAs. G. Roor.

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