US1211551A

US1211551A - Metal-working machine.

Info

Publication number: US1211551A
Application number: US72813912A
Authority: US
Inventors: Myron S Curtis
Original assignee: Potter & Johnston Machine Co
Current assignee: Potter & Johnston Machine Co
Priority date: 1912-10-28
Filing date: 1912-10-28
Publication date: 1917-01-09
Anticipated expiration: 1934-01-09

Description

M. S. CURHS.

METAL WORKING MACHINE.

APPLICATION men ocT. 28. 1912.

fl gl 1 551. a Patented Jan. 9, 1917.

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HTTUHNEY'- M. S. CURTIS.

METAL WORKING MACHINE.

APPLICATION FILED OCT. 28. 191-2.

L21 1,55 in Patented Jan. 9, 1917.

ISHEETSSHEET 2.

A TTOR/VEY M. S. CURTIS.

METAL WORKING MACHINE.

APPLICATION FILED OCT. 28. I9I2.

Patented Jan. 9, 1917.

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M. S. CURTIS.

METAL WORKING MACHINE.

APPLICATION EILED OCT. 28. 1912.

1.211 1 55 L Patented Jan. 9, 1917.

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M. S. CURTIS.

METAL WORKING MACHINE.

APPLICATION FILED OCT. 28. m2

1 %1 11 55 L Patented Jan. 9, 1917.

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METAL WORKING MACHINE.

APPLICATION FILED OCT. 28. m2.

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' Patented J an. 9, 1917.

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METAL WORKING MACHINE. APPLICATION FILED OCT. 28. I912.

Patented J an. 9, 1917.

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MYBON S. CURTIS, 0F PA'WTUCKET, RHODE ISLAND. ASSIGNOR T0 POTTER & JOHNSTON MACHINE CGIVIPANY, OF lAWTUCKET, RHODE IS? 'XND, A CORPORATION OF RHODE ISLAND.

METAL-WORKING MAC i K To all whom it may concern:

Be it known that I, Minion SHIRLEY CUR- TIS, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in MetaliVorking Machines, of which the following is a specification.

My invention has reference to an improvement in metal working machines and more particularly to an improvement in feed controlling mechanisms for metal working machines.

In the usual construction of modern metal working machines, such as automatic turret lathes, the essential element of the automatic tool controlling mechanism is a cam or cams which are limited in size to the size of the machine, thereby materially limiting the period of time in which the tool may or may not be operated. A separate cam or cam face is required for each separate and distinct operation of the tool. These cams are expensive to construct and require great accu 'acy in construction, setting up and timing in the machine. The cost of constructing these cams the time required in changing over and setting up and the cost of the skilled labor required for this purpose is greatly in excess of what is usually re quired of these machines and in fact is prohibitive except on work in which the same operation is repeated thousands of times. In the use of these cams there is no practial way except by the cams in which a record of the work may be kept so that the same may be accurately repeated at any future time, when so required it is usually necessary to depend entirely on the skill of the mechanic or operator.

The object of my invention is to improve the construction of metal working machines, such as turret lathes. whereby the same is provided with an automatic mechanism or mechanisms for operating the tools in which the above mentioned cams are entirely elimi nated.

A further object of my invention is to construct an automatic mechanism for controlling. operating and timing the tools of metal working machines, such as turret lathes, which is practically a self contained unit. the principal controlling element of which is a cvclonieter mechanism. and

which may be practically appli d to such Specification of Letters latent.

Patented Jan. 9, 1191?.

Serial No. 728,139.

machines at a minimum of cost and the construction of which is such that an accurate record may be kept of the operation of the tool or tools on the work, such as a card index, so that the identical operation of the tools may be positively and accurately repeated at any future time.

By cyclometer mechanism I mean a mechanism such as is used in the familiar ing thelength and duration of the traverse.

and the duration of the dwell or stops of the tool, the means for shifting the clutch connecting the feed shaft with the tool 'arrying member, the last two in such a way that the relation between the two is kept synchro nous, and the means for shifting this clutch so as to vary the length and duration of the traverse of the tool and the duration of the dwell or stops of the tool at any desired position of the tool in the cycle of operations.

It also has reference to the means for imparting motion to a wheel or drum to which may be attached cams or dogs for governing the spindle speeds. feed shaft speeds. operating the clutch, etc.. in such a manner that the cam or dog wheel moves only at the time when the cams or dogs are acting. the cam or dog wheel remaining stationary for the remainder of the time, thereby increasing the speed or number of operations of the tool without increasing the size of the cam or dog wheel.

The use of my improved mechanism which includes gearing for reciprocating the tool carrying slides, as described hereinafter. has certain distinct advantages against the'disadvantages of a cam driven machine, some of which are. in a cam driven machine, the length of travel is limited for the reason that increase of travel necessitates increase in both diameter and length of the cam, and increase in diameter of the cam is objectionable and impracticable beyond a certain limit, which limit is the size of the machine its; AVAELABLE COPY .mechanism as hereinafter described the extent of travel and dwell of the tool slide may be made anything desired within the limits of'the length of the bed and the design of the bed may be anything desired as my improved mechanism is comparatively small and takes up little room in the machine. The length and duration of traverse of the tool carrying slide and the duration of stops or dwell may be easily and conveniently varied, Without the necessity of attaching Dnew cams or altering the length or shape of old ones. The method of driving lends itself readily to angular motion of the tool slide, with relation to the axis of the work spindle,

. as for example, the compound rest of a lathe.

This is very useful in the turning'of work having conical surfaces such as bevel gear blanks, as the tool slide can be set at any desired angle.

My improved mechanism and method of driving lends itself very readily to the changing over of a metal working machine from hand to automatic, or vice versa. This change is very easily and quickly performed, as hereinafter described. The tools may therefore be set with the convenience of a hand machine and then the machine may be regulated to perform the various operations automatically. If the number of pieces of work does not warrant the'use of an automatic, the machine may be used as a hand machine. The feed controlling mechanism is on the unit principle and is the same for each tool carrying member. The feed controlling mechanisms are each assembled as units and then attached to the bed of the machine to drive cross slide, turret slide and backfacer bars through the spindle or any other tool carrying member.

\Vhen the usual cam or dog wheel to which the speed and feed dogs are attached is driven continuously by the feed shaft, it is evident that the surface speed of the dogs or cams attached to it is limited by the diameter of the wheel, which in turn is limited by the size of the machine bed. It is desirable to have this surface speed of the dogs as high as possible in order that changes in speed and feed may be made quickly atthe time desired. This is best accomplished by making the motion of the dog wheel intermittent, as hereinafter described, wherebythe surface speed of the dogs may be greatly increased without a correspond- I erations.

and (33.

rious tool carrying members must be synchronous with each other and with the common feed shaft for successive cycles of op- It is also desirable that the direction and duration of their traverse be conveniently changed automatically at any desired point. This is accomplished by the hereinafter described construction and method of shifting the clutches which regulate the slide traverse. The method of shifting them by the prime mover or feed shaft, is also of great advantage as the various slides are thus regulated by a common member, which moves at a comparatively high speed. Y

My inventionconsists'in the peculiar and novel construction of a metal working machine and more specifically in the peculiar and novel construction of an automatic tool operating, controlling and timing mechanism or unitfor automaticturret lathes or similar machines, said mechanism including 'a cyclometer element and. having details of construction as will be more fully set forth hereinafter and claimed. In the accompanyin a part of this specification, Figure 1. represents a front elevation partly in section, of a turret lathe embodying my invention and showing the same applied to the dog wheel, to the cross slide and to the turret slide of the machine. Fig. 1 is a side elevation, with parts in section, on a large scale, showing the head stock portion of the machine and illustrating the dog wheel actuated le-- vers, which for the sakeof appearance of illustration, are omitted from Fig. 1. Fig. 2. is a partial vertical section on line 2. 2. of Fig. 1. showing the driving connections to the dog wheel. Fig. 3. is a vertical sec tion of the machine taken on line 3'. 3. of Fig. 1. showing the driving connections to the turret slide. Fig. 4. is a vertical section of themachine taken on line 4. -l. of

Fig. 1. showing the driving connections to Fig. 5. taken on line 6. 6. of Fig. 1. through the unit. Fig. 7. is a partial horizontal sectional view taken through the controlling unit on line 7. 7. of Fig. 1. Fig. 8. is a front detail view of the cam shaft 74, cam 76,

iiidexing plates

71 and 72 and index arms 62 Fig. 9. is a diagrammatic view showing the development of the clutch 58. on the outside diameter. Fig. 10. is a diagrammatic iew showing the development of the cam 76 on the outside diameter. Fig. 11. is a vertical sectional View taken on line 11. 11. of Fig. 5. through the cyclometer mechanism 67. Fig. 12. is a detail face view of one of the dials of the cyclometer mechanism. Fig. 13. is an end viewof Fig. 12.

partly in section. Fig. 14. is an end view partly in section of the cyclometer mechanism 67 showing the indexing arm 63. Fig. 15. is a detail top view of the push rod 70. Fig. 16. is a detail top view of the push rod 69. Fig. 17 is a vertical view partly in section through the dog wheel 137 and cyclometer mechanism 67 and Fig. 18. is an end view of the dog wheel and its connections to the cyclometer mechanism.

In the drawings, 21 indicates the bed and frame of a turret lathe in one end of which. is journaled a. spindle 22 bearing a chuck 23 for holding the work to be operated upon. The spindle 22 is driven in theusual way through gearing and clutches by a pulley 2i and a feed shaft 25 is driven at times by the spindle 22 and at times by the pulley 24. as shown. This driving mechanism is of the usual construction and operation and forms no part of my invention.

On ways 26. 26. of the bed 21 is reciprocally secured a turret slide 27 which supports a revoluble turret 28,-and has on its underside a rack 29. The turret 28 contains the usual means for revolving the turret. A pinion 30 on a transverse shaft meshes with the rack 29 as shown in Fig. 3. This shaft 40 is primarily driven and controlled by the feed shaft 25 through a feed controlling unit 32, as will be more fully described hereinafter.

On the ways 26. 26., is reciprocally secured a cross slide base 33 as shown in Fig. 4. On the base 33 are pivotally secured the heads 3%. 3a. in such a manner that they may be swiveled at any desired angle to the base 33. Each head 31% has a. tool slide 35 containing a tool holder 36 carrying a tool 37. Fastened to each slide 35. is a nut 38 which engages a screw 39 rotatably secured in the head 34. thereby transferring motion from the screw 39-to the slide The screws 39. 39. are operatively connected to the transverse shaft 401 through gears 41, i2 and 43, horizontal shaft 1L5, bevel pinions i6 and 47, vertical shaft 48 and bevel pinions 4L9 and 50. The gear 4:2 is rotatably secured in a swinging yoke H which is operatively secured to the shafts 4:01 and so as to allow longitudinal movement to the cross slide base 33 on the ways 26. 26. This construction and method of driving allows the heads to be swiveled which is very advantageous. Shaft 401 is primarily driven and controlled by the feed shaft 25 through the feed controlling unit which is identically the same for each tool carrying unit.

It is imperative that the various too-1 carrying slides be driven in such a manner that their movements are synchronous with each other and with the common feed shaft 25 throughout successive cycles of their movements and in such a manner that the length and direction of their traverse may be varied at will. This I have accomplished in the following manner: The .feed controlling unit- 32 is shown in detail in Figs. 5, 6, 7, 8, 9 and 10. The feed shaft 25 has secured to it gears 51 and 52, which drive clutch gears 53 and 54. An intermediate gear 55 meshes with gear 51 and clutch gear 53 to impart a reverse motion to'clutch gear 53 to that of clutch gear 54 as shown by the arrows in Figs. 5 and 6. Clutch gears 53 and 54: rotate freely in bearings 56. 56. and each is provided on its hub with clutch teeth 57 which engage when required with corresponding clutch teeth on a clutch 58 which is keyed to a driven shaft 59 revolving in the bearings 56. 56. Meshing with the clutch gears 53 and 5% are indexing

gears

60 and 61

hearing indexing arms

62 and 63, each of which isprovided on its free end with a roll 6% and 65. These gears 60 and 61 and indexing

arms

62 and 63, revolve freely on a sleeve 66 and are normally held in the positions shown in Fig. 7 close up against a cyclometer mechanism 67 by springs 68. 68. until acted upon by

push rods

69 and 70 in a manner which will be hereinafter described. Either one of these indexing gears 60 and 61 may be shifted along the sleeve 66 until either roll 64 or 65 acts upon an

indexing plate

71 or 72 revolving these indexing plates one quarter of a revolution for one revolution of the indexing gears. Each

indexing plate

71 and 72 is provided with four equidistant radial slots 73. 73. and is fastened to a cam shaft 7% which revolves freely in bearings 75. 7 5. and carries securely fastened to it a cam 76. The

indexing plates

71 and 72 have each four equidistant V shaped notches 77. 77. in their periphery to receive the end of a spring pin 78 which is operatively supported in the frame of the feed controlling unit 32 and which hold the indexing plates securely except when acted upon by the indexing

arms

62 and 63. From the development of the cam 7 6 as shown in Figs. 8 and 10 a cam roll 7 9 work ing in the cam groove 31 may be given three positions corresponding to the three positions of the clutch 58 and is moved from one to the other position by one quarter revolutions of the cam 76. The cam roll 79 is carried by a cam roll lever 80 keyed to a shaft 8]. which is mounted in bearings 8:2. 82. and has keyed to its inner end a yoke 83. This yoke 83 has rolls 8%. 8i. engaging a groove 35 in the clutch 58 and shifts the clutch 38 into either of its three positions, corresponding to ahead, reverse or neutral.

From this construction it will be seen that the clutch 58 is controlled by the clutch gears 53 and 5t and thus by feed shaft 25 through the gears 51., 52 and 55, clutch gears 53 and 54, indexing gears 60 and 61, indexing

arms

62 and 63.

indexing plates

71 and 72, shaft 7%, cam 76, roll 79, lever 80, shaft 81, and

yoke 83 to the clutch 58. It follows therefore that the clutch 58 will always be shifted at the same relative radial positions of the clutch gears 53 and 54 so that the same clutch teeth will always engage and will' always be shifted into the neutral position at the same relative radial position ofthe clutch 58 and gears 53 and 54. To further insure the clutch 58 coming to exactly the same relative radial position each time when shifted into the neutral and also to lock it in this position, the clutch 58 is provided with a cam 86 having two oppositely disposed locating notches 87. 87. -A roll 88. held in a relatively fixed position on an arm 89 engages with the cam 86 in the notches 87. 87., centralizes and locks the clutch 58 in the neutral position. As the ratio of gearing between the clutch gears 53 and 54 and indexing gears 60 and 61 is preferably one to two, it follows that the cam 76.n1ay beindexed at any half revolution of the clutch gears, therefore the clutch cam 86 is provided with the two locating notches 87. 87 to engage the roll 88. The object in providing two indexing gears 60 and 61 is to index cam 76 in reverse directions and so that clutch 58 may be shifted back to the position it just left without it being necessary to first go into the next positions following, as it would be if the cam 76 indexed in only one direction.

The driven shaft 59 carries a worm. 90 which meshes with a worm gear 91 fastened to a sleeve 92 which by means of a clutch 93 on the shaft 10 imparts motion to the shaft 40 from the feed shaft 25 through the

gears

51, 52, 55, 53 and-54 and thus to the tool slides, as described. A further means of operating the tool slides by hand is provided. A hand wheel 94 is rotatably secured to the outer end of the shaft 40 by a hub having clutch teeth in a position to engage with clutch teeth on the clutch 93. The outer end of the sleeve 92 also having clutch teeth in a position to engage with the teeth on the clutch 93 which is secured to the shaft 10 and is operated by hand by a lever 95 which is pivotally secured to the bed 21 and has a yoke 96 operatively engaging with the clutch 93 as shown in Figs. 3, 4 and 7. By moving the lever 95 outward the clutch 93 engages with the hand wheel 94 and the shaft 40 may be turned by hand thereby operating the tool slides by hand, and by moving the lever 95 inward the clutch 93 engages with the sleeve 92 thereby operating the tool slides automatically by power.

The machine may be easily and conveniently altered from one automatically controlled to one hand controlled or vice versa. When used as a hand cont-rolled machine the operation of the automatic cyclometer mechanism 67 is cut out by the following construction and operation. Keyed to the outer end of the hub of the cam roll lever 80 is a hand lever 97 provided with a pivoted spring latch 98. A spring 99 interposed between the cam lever 80 and the bearing 82 holds the hand lever 97 in its inward normal auto matic position so that cam roll 79 engages with the cam 76, as shown in Fig. 6. On pulling out the hand lever 97 against the tension of the spring 99 and moving the latch 98 so that the inner end of the latch rests on a pad 100 the cam roll 79 is disengaged from the cam 76 the hub or sleeve upon which the

levers

80 and 97 are mounted is longitudinally slidable. The clutch 58 may now be operated by hand by the hand lever 97 through the shaft 81 and yoke 83, the cyclometer mechanism meanwhile running idle.

lVhen used as an automatic it is essential that the clutch 58 may be automatically" shifted into either of its three positions at any desired position or revolution of the feed shaft This is accomplished through the cyclometer mechanism 67. Indexing gears 60 and 61 revolve freely on the sleeve 66 which is held fixed in bearings 101. 101. Thesleeve 66 has a longitudinal recess 102 in which are two

push rods

69 and 70. The push rod 69 is provided with three cam lugs 103, 101 and 105 on its outer face and a roll 106 in its right hand end as shown in Figs. 11 and 16. A push rod 70 in the recess 102 is also provided with three cam lugs 107, 108 and 109 on its outer face and a roll 110 in its left hand end, as shown in Fig. 15.- Each

push rod

69 and 70 is held in its normal retracted position by a spring 111 in a recess in the sleeve 66 engaging with a stud on the underside of the rod, as shown in Fig. 1.1. The roll 106 ofthe push rod 69 acts upon the indexing gear 61 and the roll 110 of the push rod 70 acts upon the indexing gear 60. Surrounding the sleeve 66 are three

cylindrical dials

112, 113 and 111,

, which rotate on the sleeve 66 and are each provided with two circular series of ten holes each numbered from 0 to 10. A series of

pins

115, 116, 117, 118, 119 and 120 are detachably secured in the numbered holes in the

dials

112, 113 and 114, each pin extending through the dial into an annular groove 121 in the sleeve 66'. Each dial and the indexing gear 61 has a gear plate 122 which mesh with

pinions

123, 121 and 125. As may be seen by reference to Figs. 12 and 13, the arrangement is the ordinary one common to cyclometer and other forms of adding mechanisms, the gear 122 of one dial having a complete circle of teeth, and the adjacent gear 122 of the next dial having but a single tooth, and the

pinion

123, or 124, or 125, as the case may be, being wide enough to extend between said two adjacent gears 122, one tooth, however, being only wide enough to engage the teeth of the gear with the full circle of teeth. Ihus a, complete revolution of the one tooth gear 122 will cause only a partial revolution of the transfer pinion (123 or 121- or 125) and said pinion will impart only a partial revolution to the dial of next higher denomination. These pinions are supported on a shaft 126 which is rotatably supported in bearings. The indexing gear 61 intermittently drives the

dials

112, 113 111 through the pinions and gear plates on the principle of the Geneva stop motion in such a way that the dial 112 indicates one tenth of a revolution for one tenth of a revolution of the indexing gear 61 and remains locked during the remaining nine tenths of the revolution of indexing gear 61. In the same way dial 113 is indexed by dial 112 and dial 111 by dial 113. Dial 112 indexes one division for each revolution of the indexing gear 61, dial 113 indexes one division for every ten revolutions of indexing gear 61 and dial 111- indexes one division for each one hundred revolution of the indexing gear 61. The dials are divided into divisions and the holes numbered for convenience in setting the pins and for record. Although I show three dials it is self evident that the number of dials and the number of holes or divisions in each'dial is not limited. The feed controlling units 82. 32. when connected to the turret and cross slides are preferably secured to the front the bed 21 and each inclosed in a casing having a normally closed opening for eonvei'nence in inserting the pins into the dials, as shown. in Figs. 1. 3,

s

5 and 6. The action of either push rod 0% or T0 is as ollows: Push rod is normally held in its 'etracted position by the spring 111. in is position the pin 1.17 in the dial 11-1 the ug 105; of the push rod ant. 115 in dials 113 As the dial 111 ,aring against the cam 6 in the direction of ll lg. 11. so that the cam lug 10 1- is brought 1 position to be operated upon by 'e pin 11%. 11s the dial 113 indexes the pin 11% acting on the cam. lug pushes the rod 69 still farther in, the direction. of the arrow so that cam lug 103 is a position to be acted upon by the pin 11. in the dial 112. and also so that the roll 10 is just bearing on the gear plate 122 which abuts against the indexing gear Dial 112 now indexesand by means of the pin engaging with the cam lug 108 pushes the push rod (39 still farther in the same direction thereby pushing'or moving the indexing gear 01 to the right against the tension ofthe spring 08. The roll on'the indexing arm 03 now enters a radial slot 73 in the indexing plate '12. revolving the indexing plate T2 and the can: 70 one quarter of a 1 while the sins 11o revolution, thereby shifting the clutch 58, as described. The gearing is so positioned that indexing gear 61. is pushed to the right when the roll is radially located opposite a radial slot 73 in the indexing plate 72. Further rotation of the indexing gear 61 carries the dial 112 to index a one tenth division, thus carrying the pin 115 away or out of engagement with the cam lug 103 and the indexing plate 71. The cam lugs 103 to 109 on the

push rods

69 and 70 are beveled on their tops in order that the pins 115 to 120 may be inserted into the dials when the cam lugs are in an operative position.

it is extremely desirable that the usual dog wheel be indexed a division at any desired position or revolution of the common feed shaft 25 and in time with it. This 1 have accomplished by the use of the cyclonieter mechanism- 0? heretofore described. as shown, the mechanism is arranged to drive two dog wheels,.but only one will be described, as the operation is identically the samefor both.

The common feed shaft 25 has fast to it a gear 127 which meshes with an intermediate v gear 128 which in turn meshes with a twin gear This twin gear 129 revolves loose on a collar 130 which is keyed to the cyclonieter sleeve 66 so that the collar 130 may move laterally but cannot revolve on the cyclometer sleeve 60. The gear 129 has clutch teeth which engage with clutch teeth on a spiral gear 131 at any desired revolution of the feed shaft by means of the cvcloineter mechanism 67 as shown in Fig. 1?. The spiral gear 131 revolves freely on the cyclometer sleeve 60. The inner gear of the twin gear 122 drives the c clcmeter mechanism GT'and is operated upon by a push rod controlled by the cyclometer mechanism (57 in the manner previously described. The spiral gear 131 meshes with a spiral gear 132 which is fast to a shaft 133 rotatably supported in bearings 131-. 131., as shown in Fig. 18. The shaft; 133 carries a worm 135 which meshes with a worm gear 136 secured to the hub of a dog wheel 13'? which is secured to a shaft 138 rotatably supported in bearings 139. 139., as shown in 1 and 17, thereby driving the dog wheel 187. The ratio the gearing is such that the dog wheel 13? revolves one division for each revolution of the common feed shaft A downwardly extending roll 140 is secured to the collar 130 adjacent the outer edge of the dog wheel 137 which has on its outer end at the periphery a series of raised cam faces 141. 141. which engage with the roll 140. On the operation of the push rod 69. the twin gear 129 is moved laterally and clutched to the spiral gear 131 and through the spiral gear 132, the shaft 133, the worm 135 and the worm gear 136, the dog wheel 137 starts to revolve and the roll 140 rides on a cam face 141. The twin gear 129 and the'spiral gear 131 are held in engagement by the push rod in the cyclometer mechanism a suflicient time for the dog wheel to start. After the dog wheel has revolved one division the roll 140 drops into a space l 42..between the cam faces 141. 141. The twin, gear 129 is now retracted out of engagement with the spiral gear 131 by the spring 68 thus stopping the dog wheel. If it is desired to revolve the dog Wheel more than one division without stopping, the spaces 142. 142. may be closed by filllng in pieces 143. 143. The roll 140 will then pass over the spaces 142. 142. filled by these pieces until it comes to an open space 142.

v The dog Wheel 137 is provided with the usual cams 144. 144. which operates the driving mechanism clutches, changes the spindle speeds and the feed shaft speeds in the usual well known manner and forms no part of my invention. I

In illustration of the operative connection between the dog'vvheel and the spindle and feed shaft, "1 show in Fig. 1 two

levers

145 and 145 respectively, each of which is adapted to be engaged and rocked by the appropriate cams 144 of the dog wheel, the lever 145 being connected by a rod or link 146 with a bell cranklever 147, which engages a sliding clutch 148, which is adapted to render operative either, or neither of two gear Wheels 149 and 150, which respectively mesh with

gears

1,51 and 152011 the spindle 22. The lever l45 is connected by a rod or link 153, with a lever 154 with a sliding clutch 155, which is adapted to render operative either, or neither of two

gears

156 and 157, which are loose on the feed shaft 25.

By this construction it is apparent that the various tool carrying slides and dog wheel operating mechanisms or units are each connected synchronously with the common feed shaft 25, therefore they will all be in the same relative relation one with the other during successive'cycles of their movements. This mechanism may be applied to any other tool carrying member, suohas a backfacer bar through the spindle.

The machine is set up and operated in the following manner: With the clutch 58 in the neutral position, the feed shaft 25 stopped and the clutch 93 shifted to ehgage with the hand wheel 94, the mechanism may be operated by the hand wheel 94 and the turret slide 27 fed by hand until the tools in the first turret face have finished their work. The clutch 93 is now shifted by hand to engage with the worm gear 91 through its sleeve 93 and the feed. shaft 25 allowed to revolve by power. After sufiicient dwell for the purpose desired has been allowed, the pins are inserted into the dials of the cyclometer mechanism 67 so as to act on a pushrod, thus acting through the mechanism to shift the clutch 58 into the reverse position, as described. The turret will now move back by power to the position desired when pins are inserted into the dials to throw the clutch 58 into the neutral position again, thus stopping the movement of the turret slide. a After allowing suflicient dwell to re- .voh e the turret or for any other purpose,

pins are inserted into the dials to throw the clutch 58 into ahead and the turret feeds ahead presenting the second turret face and tools to the work the turret revolving by its usual automatic mechanism, not shown. After the tools in the second turret face have completed their work, pins are inserted in the dials to shift the clutch 58 into thev nism 67, indexing

arms

62 and 63,

indexing plates

71 and 72, shaft 74, cam 76, cam roll lever 80, shaft 81, yoke 83, clutch 58 to either of the clutch gears 53 or 54 and then when either gear is engaged with the clutch 58 through the clutch 58 to the shaft 59, through the worm 90, worm gear 91, sleeve 92, clutch 93, shaft 40, pinion 30, rack 29 to the turret slide 27. When set up to work automatically for the cross slides, the construction and operation is identically the 'same except the shaft 40 revolves gears 41,

42, 43, shaft 45, bevel pinions 46 and 47, vertical shafts 48., 48., bevel pinions 49 and 50,

screws 39, 39, tothe tool slides 35. 35. thereby reciprocating the tool slides and'tools in a predetermined manner as described. In the construction shown, the cyclometer mechanismindexes up to one thousand, therefore there are one thousand revolutions of the indexing gear 61 for one complete cycle of operations. If it is not requiredto use all of these to perform the work, the mechanism can be allowed to run idle during the time necessary to use them up, allowing time for chucking the work, etc, and the same operations will then be automatically repeated. In the same way the cross slide'is set to Work at any desired time with the turret slide. The time when it is desired to change the spindle speeds or the ratio of movement of the common feed shaft, pins inserted into the dials of the cyclometer mechanism governing the dog wheel, to throw gear 129 into engagement with spiral gear 131 thus starting the dog wheel revolving in time with the feed shaft. The cams 144. 144. are then attached to the dog wheel in a predetermined position to vary the speeds and feeds in the usual way. After the insertion of the pins as required in the dials of the cyclometer mechanisms is completed for the required number of operations, time, dwell, etc., on a given piece of work, a complete record of the number and position of the pins, right or left, may be taken and the same filed away in any suitable manner, such as in a card index. By this means the machine may be quickly and accurately set up and the identical operation on the work repeated at any future time and at a minimum of cost.

It is evident that the construction of the feed controlling mechanism may be varied so as to adapt the same to various kinds of automatic metal working machines.

Having thus described my invention I claim as new 1. In a metal working machine the combination of a driving element, a member movable intermittently, a disconnectible operative connection between said driving element and said member, a controlling mechanism comprising manuallysettable acv tuating devices, means for actuating the disconnectible operative connection operated by the controlling mechanism, and an operative connection between said driving element and said controlling mechanism.

2. In a metal working machine the combination of a driving element, a reciprocating tool-carrying member, a disconnectible opera-ting connection between said driving element and said member, a controlling mechanism comprising manually settable actuating device, means for actuating the disconnectible operative connection 0 erat-ed by the controlling mechanism, an an operative connection between said driving element and said controlling mechanism.

3. In a metal working machine the combination of a driving element, a member movable intermittently, a disconnectible operative connection between said driving element and said member, a controlling mechanism' comprising manually settable successively acting actuating devices, means for actuating the disconnectible operative connection operated by the controlling mechanism, and an operative connection between said driving element and said controlling mechanism.

4. In a metal working machine the combination of a driving element, a reciprocating tool carrying member adriving shaft operatively connected with said member, clutch mechanism adapted operatively to connect said driving element and said shaft, said clutch mechanism including a shiftable clutch collar, a controlling mechanism for said clutch collar comprising manually settable successively acting actuating devices, and an operative connection between said driving element and said control mechanism.

5. In a metal working machine, a common driving member, a plurality of tool carrying members, feed controlling units operatively connected with the common driving member and with each tool carrying member, means in each feed controlling unit, including a cyclometer mechanism, for automatically controlling the relative relations of the various tool carrying members and for automatically varying the length and duration of movement of each tool carrying member and by which a record may be kept of all the various movements. of each of the tool carrying members.

6. In a metal working machine, a driving member, a plurality of tool-carrying members, motion transmitting means opera'tivelv connected with the driving member and with the respective tool-carrying members,

means operatively connected with said motion transmitting means for automatically controlling the movements of the respective tool-carrying members, and means for automatically varying the length and duration of movement of each tool-carrying member and comprising manually settable actuating devices and rotating elements carrying said devices.

7. In a metal working machine, a driving member, a plurality of tool-carrying members, motion transmitting means operatively connected with the driving member and with the respective tool-carrying members. means operatively connected with said motion transmitting means for automatically controlling the movements of the respective tool-carrying members, means for automatically varying the length and duration of movement of each tool-carrying member and comprising manually settable actuating devices and rotating elements carrying said devices, and means for operating the tool-carrying members by hand.

8. In a metal working machine, a driving member, a plurality of tool-carrying members, motion transmitting means operativelv connected with the driving member and with the respective tool-carrying members, means operatively connected with said motion transmitting means for automatically controlling the movements of the respective tool-carrying members. and means for automatically varying the length and duration of movement of each tool-carrying member and comprising manually settable actuating devices and rotating elements carrying said devices, and means associated with said ro tating elements enabling a record to be kept of the various movements of the tool-carrying members.

9. In a metal working machine, a spindle driving mechanism, a dog wheel operatively connected with the spindle driving-mechanism, a driving member operated by the spindle driving mechanism, a plurality of tool carrying members, a speed controlling mechanism operatively connected with the driving member and with the dog wheel,

feed controlling mechanisms operatively connected with the driving member and with the tool carrying members, the speed and feed cont-rolling mechanisms having means various movements of the tool carrying members and means for operating the tool carrying members by hand I 10. .In a metal working machine, a spindle 1 driving mechanism, a common driving memher, a dog wheel adapted to control the operations of a spindle driving mechanism, tool carrying members, a speed controlling unit operatively connected with-the common driving member and with. the dog wheel, feed controlling units operatively connected with the common driving member and with the tool carrying members, each speed and feed controlling unit having means including a cyclometer mechanism for'automatically controlling the relative relations of the tool carrying members with each other and with the dog wheel, means for automatically varying the length and duration of movement of each tool carrying member and dog wheel, means whereby a separate record may be kept of the various movements and operations of the dog wheel and tool carrying members and means for operating thetool carrying members by hand.

11. In a feed controlling-unit for metal working machines, a driving member, a driven member, intermediate means for connecting and disconnecting the driving and driven members, and means including a cyclome'ter mechanism, for positively and automatically controlling and holding the relative relation between the driving and driven members.

12. In a feed controlling unit for metal working machines, a driving member, a

driven member, a clutch adapted to connect or disconnect the driving and driven members and means including a cyclometer mechanism, for positively and automatically controlling and holding the relative relation between the driving and driven members.

13. In a feed controlling unit for metal working machines, a driving member, a

driven member, a clutch adapted to connect or disconnect the driving and driven members, and means including a cyclometer mechanism for positively and automatically controlling and holding the relative relation between the driving member, the driven member and the clutch.

14. In a feed controlling unit for metal working machines, a driving member, a driven member, a clutch on the driven member adapted to connect or disconnect the driving and driven members, means for positively and automatically controlling and holding the relative relation between the driving member, the driven member and the clutch, comprising essentially a cyclometer mechanism, a cam, means for operatively connecting the driving member with the cyclometer mechanism, means for operatively connecting the cyclometer mechanism with the cam and means for operatively connecting the cam with the clutch on the driven member.

15. In a feed controlling unit for metal working machines, a driving gear, a driven shaft, a clutch operatively secured to' the driven shaft and adapted to connect or disconnect the driving gear and the driven shaft, a cyclometer mechanism, a cam, means for operatively connecting the driving gear with the cyclometer mechanism, means for operatively connecting the cyclometer mechanism with the cam and means for operatively connecting the cam with the clutch, whereby the driving gear and driven shaft are positively and automatically controlled and held in their relative relation one with the other.

16. In a feed controlling unit for metal working machines, a driving gear, a driven shaft, a clutch reciprocally secured to the driven shaft and adapted to connect or disconnect the driving gear and driven shaft, a cyclometer mechanism, a cam, means for operatively connecting the driving gear with the cyclometer mechanism, means for operatively connecting the cyclometer mechanism with the cam and means for operatively connectingthe cam with the clutch,

whereby the driving gear and driven shaft are positively and automatically controlled and held in their relative radial relation and means for disconnecting the cam from the clutch.

17. In a feed controlling unit for metal working machines, a driving gear, a driven shaft, a clutch on the driven shaft adapted to connect or disconnect the driving gear and driven shaft. a cyclometer mechanlsm, a gear on the cyclometer mechanism meshing with the driving gear, a cam, means for operatively connecting the cyclometer mechanism with the cam and means for operatively connecting the cam with the clutch. whereby the driving gear and driven shaft are positively and automatically controlled and held in their relative radial relation and means for disconnecting the cam from the clutch.

18. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, a cyclometer mechanism, gears on the cyclometer mechanism in meshing with the driving gears, a cam, means for operatively connecting the cyclometer mechanism with the cam and means for operatively connecting the cam wit-h the clutch, whereby the driving gears and driven shaft are positively and automatically controlled and held in their relative radial relation and means for disconnecting the cam from the clutch.

19. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, a cyclometer mechanism, gears on the cyclometer mechanism meshing with the driving gears, a cam con structed to give a forward movement, a reverse movement and a neutral position to the clutch. means for operatively connecting the cyclometer mechanism with the cam, and means for operatively connecting the cam with the clutch.

20. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, a cyclometer mechanism, gears on the cyclometer mechanism meshing with the driving gears. a cam constructed to give a forward movement, a reverse movement and a neutral position to the clutch, means for operatively connecting the cyclometer mechanism with the cam, means for operatively connecting the cam with the clutch and means for disconnecting the cam and clutch.

21. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, a cyclometer mechanism, gears on the cyclometer mechanism meshing with the driving gears, a cam constructed to give a forward movement, a reverse movement and a neutral position to the clutch, means for operatively connecting the cyclometer mechanism with the cam, means for operatively connecting the cam with the clutch, means for locking the clutch in the neutral position and means for dis? connecting the cam and clutch.

In a feed controlling unit for metal working machines, a for a rd driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, a cyclometer mechanism, gears on the cyclometer mechanismmeshing with the driving gears, a am constructed to give a forward movement, a reverse movement and neutral position to the clutch, means for operatively connecting the cyclometer mechanism with the cam, means for operatively connecting the cam with the clutch, means for locking the clutch in the neutral position, means for disconnecting the cam and clutch, means for operatively connecting the driving gears with the common feed shaft of the machine and means for operatively connecting the driven shaft with a tool carrying member of the machine.

23. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and the driven shaft, a cyclometer mechanism, gears on the cyclometer mechanism meshing wit-h'the driving gears, a cam constructed to give a forward movement, a reverse movement and a neutral position to the clutch, means for operatively connecting the cyclometer mechanism with the cam, means for operatively connecting the cam with the clutch, means for locking the clutch in the neutral position. means for disconnecting the cam from the clutch, means for operatively connecting the driving gears with the common feed shaft of the machine, a transverse shaft. means for transmitting power from the driven shaft to the transverse shaft, and means for operatively connecting the transverse shaft with a tool holding member of the machine.

24. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, :1 cyclometer mechanism, gears on the cyclometer mechanism meshing with the driving gears, a cam constructed to give a forward movement. a reverse movement and a neutral position to the clutch, means for operatively connecting the cyclometer mechanism with the cam, means for operatively connecting the cam with the clutch, means for locking the clutch in the neutral position, means for disconnecting the cam from the clutch, a transverse shaft, means for transmitting power from the driven shaft to the transverse shaft, means for connecting or disconnecting the transverse shaft and driven shaft, means for ope atively connecting the transverse shaft with a tool holding member of the machine and means for operatively connecting the driving gears with the feed shaft of the machine.

25. In a feed controlling unit for metal working machines, a forward driving gear, a reverse driving gear, a driven shaft, a clutch on the driven shaft adapted to alternately connect or disconnect the driving gears and driven shaft, a cyclometer mechanism having a fixed sleeve, gears rotatably supported on the sleeve and meshing with the driving gears, said sleevegears having a predetermined lateral movement on the sleeve and normally held in their inward position under spring tension, push bars reciprocally supported in the sleeve and adapted to engage with the sleeve gears, dials rotatably supported on the sleeve intermediate the sleeve gears, each dial. having a plurality of numbered holes, pins detachably secured in the holes in the dials and adapted to operate the push rods which in turn operates to move the sleeve gears laterally, outward, means for giving an intermittent rotary movement to the dials, an indexing arm secured to each sleeve gear, a roll on the end of each arm, a cam shaft, indexing plates secured to the cam shaft each plate having four radial slots in a position for the roll on theindexing arm to enter a slot on the outward lateral movement of the sleeve gear, a cam on the cam shaft constructed to give a forward, a reverse and a neutral position to the clutch, a transverse clutch shaft, means for operatively conn t ing the transverse clutch shaft with the cam and clutch, means for locking the clutch in the neutral position, means for disconnecting the clutch shaft from the cam, a transverse shaft, means for transmitting power from the driven shaft to the transverse shaft, means for operatively connecting the transverse shaft with a tool holding member of the machine, means for connecting or disconnecting the driven shaft and trans verse shaft, means for operating the transverse shaft by hand and means for operatively connecting the driving gears with the common feed shaft of the machine.

26. In a speed controlling mechanism for metal working machines, a driving gear, a cyclometer mechanism, having a fixed sleeve, a collar reciprocally secured to the sleeve, a gear rotatably secured to the collar and meshing with the driving gear, a spiral gear rotatably supported on the fixed sleeve, the opposing faces of the sleeve gear and spiral gear forming a clutch, a spring intermediate the sleeve gear and spiral gear, a push bar reciprocally supported in the fixed sleeve and adapted to engage with the collar and push the sleeve gear outward into clutch with the spiral gear, dials rotatably supported on the sleeve, each dial having a plurality of numbered holes, pins detachably secured in the holes in the dials and adapted to operate the push rod, means for giving an intermittent rotary movement to the dials, a dog wheel, means for transmitting power from the spiral gear to the dog wheel, a roll on the collar, and means on the dog wheel adapted to engage the roll to give a reciprocating motion to the collarand sleeve gear and means for operatively connecting the driving gear with the common feed shaft of the machine, whereby 'a predetermined intermittent rotary movement is given to the dog wheel.

27; In a feed controlling mechanism for metal working machines, a driving member, a driven member, means for connecting and disconnecting said members, and manually settable automatic actuating means control-' ling .said connecting and disconnecting means.

In testimony whereof, I have signed my name to this specification in the presence of.-

two subscribing witnesses.

MYRON S. CURTIS.

WVitnesses C. PERRY WVHITE, CHAS. H. LUTHER.