US1114793A - Controlling mechanism. - Google Patents

Description

A. R. MURRAY.

CONTROLLING MEGHANISM.

APPLICATION FILED JAN.19, 1914i 1,1 14,793. Patented 0011.27, 1914 4 SHEETSSH'EET l.

VHF NORRIS PETERS CO.. F'HOTOLITH 7,,WASHING1ON, D. c.

Patented Oct. 27, 1914.

4 SHEETSSHBET 2.

A. E. MURRAY.

GONTROLLING MECHANISM.

APPLIGATION FILED JAN.-19, 1914.

THE NORRIS PETERS c0. PHOTD-LITHLL, WASHING TON, Dv C,

A. R. MURRAY.

CONTROLLING MECHANISM.

APPLIGA'IION FILED JAN.19, 1914.

1,1 14,793. Patented 001;. 27, 1914.

4 SHEETS-SHEET 3.

r ai

Fill.

gmmm W THE NORRIS PETERS C0 PHOTO-LITHO.. WASHINGTON, r). C.

A. R. MURRAY.

CONTROLLING MECHANISM.

APPLICATION FILED 16.11219, 1.914.

1,1 14,793, Patented 0015.27, 1914.

4 SHEETSSHEET 4.

@FMw

7H!" NORRIS PETERS cow. FHGTO-LlTl-l WASHINGTON, n. c.

UNITED srarns PATENT OFFICE.

ARISTIDES R. MURRAY, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI CUTTING MACHINE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

CONTROLLING IMECHANISM.

Specification of Letters Patent.

Patented Oct. 27,1914.

Application filed January 19', 19141. Serial n5. 812,988.

To all whom it may concern Be it known that LAnrsrmns R. hLlURRAY, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Controlling ,Mechanism, of which the following is a specification. I

My invention is especially applicable in machines of that character in which there is a cutter-support, a work-support,means for causing reciprocating movements between said supports in performing the cutting, and indexing means for intermittently presenting new surfaces of the work to the cutter.

It is the object of my invention to provide novel controlling mechanism, whereby for example the reciprocatiing movements between the cutter-support and the worksupport are automatically discontinued upon the completion of the work, irrespec tive of whether one or more feeding revolutions between the work and cutter are necessary for the completion of the work, or

of the extent of the movements required lee-- tween the work and the cutter for presenting new surfaces to be cut.

I exemplify my invention in a so-called gancutting machine. I illustrate the prin cipal parts of a machine of this nature, and exemplify the controlling means as acting upon an element of the means for reciproeating the cutter-support, and as actuated by said element, but I do not intend that my invention be limited by such exemplifi cation except as the scope of the claims necessitates. I

It is the object of my invention further to provide novel means, in a gear-cutting machine, for example, whereby the reciproeating movements between the cutter and the gear-blank are controlled, so that the same are arrested when a given number of reciprocations have taken place, thus permitting a given number of teeth to be cut irrespective of whether the teeth are cut one adjacent to the other, in which instance the cutting of the teeth will have been per-,

formed atone complete revolution of the gear-blank, or whether the blocksystem of cutting teeth is'employed, in which the cutter cuts non-adjacent toothspaces, one or more of the tooth-spaces being skipped at each actuation of the gear-blank, and more teeth about the gear-blank.

It is theobject of my invention further to provide a controlling 'nieans'of the char acter .nientioned in which there is a controlling member and a controlled member ;whichhave relative rotary and axial move- .ments between them for determining their amoment of coaction; further to provide controlling means of the character mentioned in which there is a controlling member and n controlled member which have rotary imovement imparted between them for a given range of numbersflof reciprocations. Qcontrolled and have axial movement 'im-- parted between them for controlling multiples of said givenrange.

It is a further ob cCt of my invention to provide controlling means of compact form capable of being readily attached t'o a machine of the character mentioned" for controlling the,reciprocationsbetween the cutter-support andthe work-support. The invention will be further readily un-' derstood from the following description and claims, and from the drawings, in which latter: I a 1v v a Figure 1 is a plan view of a gear-cutting machine embodying my invention. Fig. is a rear side elevation of the same. Fig. is a front end elevation of the same. Fig. is a rear end elevation of the same. Fig.

isa vertical cross-section taken onthe irregular: line 5-5 of Fig; 1, showing the clutch-operating mechanism for controlling the carriage. movement. Fig. 6 is a side elevation of the controlling mechanism, showing the same mounted on the machine frame, the actuating member being shown in normal position in full lines, and in as sumed position in dotted lines, the controllingmechanism being shown partly in section on the irregular line 66 of Fig. 9. F 7 is a rear side elevation of the same, the casing being shown partly in vertical section on theirregular line 77 of Fig. 9, and showing the arresting member in normal inoperative position in full lines, and in arresting positionin dotted lines. Fig. 8 is a plan view of the same, with the casing shown iri'section on the line 8-8 of Fig. 6. Fig. 9 is aYplanview of the same. Fig. 10

is a vertical cross-section on the line 1010' of Fig.7 and Fig. 11 is a .detail'in vertical section taken on the line 1111 of Fig. 2,

showing tripping means for the indexing mechanism.

11 represents the main frame of a gearcutting machine, which supports a carriage 12,or cutter support, which reciprocates on guideways 13 on the main frame. A cutterarbor let is journaled in bearings 15 on an adjustable cross-slide 16 on the carriage, and is arranged to have a suitable cutter 17 secured thereto.

21 is a slide, which has a spindle 22 j ournaled thereon in a bearing 23, the spindle being arranged to have a suitable blank, shown as a gear-blank 24, releasably secured thereto. The slide 21 is slidable along a guide 25 on a column 26 of the frame, and is adjustable up and down by means of a screw-rod 27.

The cutter is caused to rotate and the cutter-support is caused to reciprocate under jacent or non-adjacent tooth-spaces.

A drive-shaft 31 is journaled in'bearings 32 in the main frame, and has a bevelgear 33 and a spur-gear 3% fast thereon. A shaft 35 is journaled in a bearing 36 in the main frame, and has a bevel-gear 37 fast thereon which meshes with the bevel-gear 33. A shaft 38 for driving the cutter is journaled in bearings 39, 40, of the main frame, bearings 41 on the cutter-carriage being received about the shaft and having a worm 42 between them, the worm having splineconnection 43 with said shaft for being rotated thereby irrespective of its lengthwise position on the shaft 38. A gear A4: is on the shaft 35 and a gear 45 is on the shaft 38, and mesh with each other, these gears being capable of being changed for varying the speed of the shaft 38. A worm-wheel 46 fast on the cutter-arbor 14 meshes with the worm 4-2 for being rotated thereby.

Suitable means are provided for auto matically intermittently rotating the spindle 22 with a step-by-step movement, the steps representing one or more of the teeth to be cut on the gear-blank. I have instanced this mechanism as comprising a worm-wheel 51, which is suitably releasably secured to the spindle 22. A worm 52 meshes with the worm-wheel. This worm has journals 53 in bearings 5 f on a bracket 55 extending from the slide 21. A shaft 56 has splineconnection 57 with the wormf It has a bevel-gear 58 fast thereon, meshed by a bevel gear 59 fast on a shaft 60 j ournaled in bearings 61 andodrivenfrom a shaft 62 journaled in bearings 63 in the main frame.

Suitable change-gear mechanism is located between the shafts 62 and 60, indicated generally at 64:, for the purpose of changing the relations of speed between the shafts 62 and 60, depending on the distance it is desired to move the gear-blank at its respective steps of intermittent movement.

Means are provided for intermittently rotating the shaft 62 from a shaft 65, the shaft 65 being a continuously rotating shaft ar ranged to impart rotation to the shaft 62 when it is desired to have a movement of the gear-blank take place, the shaft 62 preferably rotating one revolution at each such actuation. The shaft 65 is journaled in bearings 66 on the frame and has a gear 67 thereon which is meshed by a gear 68 fast on the shaft 35. The shaft 65 also has a gear 69 fast thereon which meshes with a gear 7 0 on one member of a suitable frictionclutch 71, the other member 72 of said clutch being fast on the shaft 62. The shaft 62 is normally arrested to prevent its rotation, and its arresting member is arranged to be rendered momentarily inoperative by a suitable carriage control. This mechanism is instanced as a trigger 73 engaging a tooth 7 i on a hub 75 fast on the shaft 62, the trigger being controlled by a bell-crank lever 76 pivoted at 77 to the frame and connected with the trigger by a link 78. The bellcrank lever is arranged to be engaged by a finger 79 secured to a shifter-rod 80, the finger being arranged to ride over a latch 81 on the bell-crank lever, depressing the same against the action of a spring 82, the latch rising after passage of the trigger into obstructing position so as to actuate the bellcrank lever upon reverse movement of said finger, for momentarily raising the trigger 73, but allowing its immediate retraction for riding on the hub 75 and into obstructing relation with the tooth 7 a for permitting only one revolution of the shaft 62 at a time.

The means exemplified for reciprocating the carriage include a gear 86 journaled on a stud 87 and meshing with the gear 67. A gear 88 meshes with the gear 86 and has a hub 89 journaled in a bearing 90 .in the main frame, the inner end of the hub having one member of a clutch 91 thereon. A screw-rod 92 is received in the hub 89, is j ournaled in a bearing 93 in the main frame, and has threaded connection with the threaded bearing 9 L of the cutter carriage. These means cause movement of the carriage in one direction, namely the reverse movement of the carriage for returning the cutter-carriage to initial position ready for a new cut to be taken, and is the speedier of the two movements of the carriage. For moving the cuttencarriage in the opposite or feed direction for causing cutting travel between the carriage and the gear-blank, the gear 3% meshes with a gear 95 on a crossspective clutches 91 and 100 thereon. This collar has spline-connection102 with the screw-rod and is arranged to beshifted by an operating lever 103. This operating lever is shownpivoted to the frame on a stud 104 and has fingers 105 thereon received in an annular groove 106 in the colthe opposite clutch. initiated, the roller 112 will have arrived lar 101, and is provided with a handle 107 by means of which the same may be shifted by hand.

Means are provided for causing quick release and-engagement of the clutches when the machine is in operation. Thus 111 is a rocking member pivoted on the stud 104 and has a roller 112 thereon. It is provided with a lug 113 which is movable back and forth in a recess 114 in the clutch-lever, the end walls of the lug and recess being so arranged that contact therebetween will cause engagement between the clutches..-.

The rocking member is arranged to be rocked by means of a sleeve 115 which has flanges 116 at its ends, the flanges being arranged to engage the rocking member. Endwise movement of the sleeve is controlled by the movement of the carriage. It is mounted on the longitudinally movable rod slidable in bearings 117 in the main frame. It also has collars 119, 119 thereon,

which are arranged to be adjusted to suitable positions lengthwise of the rod, de-

pending on the length of travel it is desired that the carriage shall have. These collars are set lengthwise of the rod by bolts 120, 120. A striker-pin 118 is arranged to be contacted by the collars 119, 119, for longitudinally shifting the rod 80.

A. thrust-bolt 126 has oppositely inclined contact faces 127 thereon arrangedto contact the roller 112. The thrust-bolt is received in a socket 128 of the frame and is spring-pressed toward the roller by a spring 129. When the sleeve is moved longitudinally by the carriage, it first aifects'the' rocking member 111, permitting the clutch that has been. in engagement to remain in engagement during the initial part of its movement. lVhen the lug 113 strikes the end face of the recess 114, toward which it is moving, the further movement of the rocking member will cause a shifting of the operating lever for initiating movement toward When its movement is It has one memberv at the apex between the inclinedlcontact' faces .127, the bolt having been meanwhile pressed lengthwise for compressing the spring 129, whichv willforce the bolt outwardly when the contacted part of the periphery of" the roller 112 will have passed the said apex.

Means are provided for causing cessation of reciprocating movements between the cutter-support and'the' worlnsupport upon,

completion of a given number of said recip rocations, and I. have exemplified these means as readily. attachable. tothe machine as a self-containeddevice. Thus 151 is. a

casing secured to theYframe by means of. bolts152. 153 is a"rotary controlling element and is arranged to be intermittently rotated by-suitable means, as. a-rotary actu-" ating element, exemplified as a ratchetwheel 154. The rotary controlling element and rotary actuating element rotatesimultaneously. I have shown the rotary controlling element in the form of a round block mounted on a sleeve .155 and secured rigidly to said sleeve by a set-screw 156, the

sleeve in the present exemplificationforming the hub ofthe. ratchet wheel. Axial movement is also iinparted to the rotary controlling element, exemplified as accomplished by a screw-rod. I have shown the screw-rod rigid in the casing. This screw rod isexemplifiedat 157, fixed in a bearing,

.158 in the casing, and having threaded connection with the threaded bore 159 of sleeve An actuating lever 161 is pivoted on a shaft 162 mounted in bearings 163 of the casing. A pawl 164 is pivoted by means of a pivot-screw 165 to the arm 166 of the actuating lever, the tooth 167 of the pawl coacting with the teeth 168 of the ratchetwheel. The weight" of the pawl normally causes engagement between its tooth and the teeth of the ratchet-wheel. :The actuating lever is arranged to be actuated by a suit- 1 able part of the machine,"exemplified as the. clutch-operating lever 103, the actuated .arm 169. of the actuating lever extending outside the casing through an opening 170 in the casing'into the normal range of movement of the clutch-lever 103. This clutchlever reciprocates as hereinbefore described, and when moving in one direction is arranged to strike an inclined face 171 on said actuated arm for depressing said actuated:

arm at each movement in one direction of said clutch-lever, thereby actuating the pawl 164 and causing amovement of theratchetwheel and of the rotary controlling element for the distance of one tooth of the ratchet-wheel. The actuated arm is brought into normal range with the clutch-lever by. means of a push-pin 172 acting upon a lug 173 of the actuating lever and "springpressed by a spring 174 received about the stem 175 of said push-pin in asocket 176 of a socket-cap 177 releasably secured to the casing, as shown by the threaded connection 178. An extension 183 extends from said pawl through a slot 18 1 in thecasing to a position outside said casing, so that the pawl may be manually brought out of coaotlng relation with the ratchet-wheel.

The element controlled by the rotary controlling element is exemplified as an arresting lever 186 arranged to arrest the reciprocating movement of the clutch-lever for preventing engagement of the clutch 100, and consequently the movement of the cutter-support toward the work-support, this arresting being effected when the. proper number'of teeth have been cut in the gearblank. This arresting lever is pivoted on the shaft 162 and has an arm 187 extending to the outside of the casing through the opening 170. The arm is provided with a hook 188 arranged to be placed into obstructing position with relation to the clutch-lever 103 when the desired number or" reciprocations between the cutter-support and the work-support have taken place.

The inner end of the lever 186 is provided with a finger 18.9. The rotary controlling element comprises apart arranged to coact with the finger for bringing the hook 188 into arresting position. shown accomplished by providing the rotary controlling element 153 with a depres-' SiOn 191 in which the finger is arranged to be received. The finger is normally pressed toward the rotary controlling element by a push-pin 192 acting on the finger'189 of the lever 186 and spring-pressed by a spring 19 1 received about the stem 195 of the push-- pin in a socket 196 of a socket-cap 197 having threaded connection 198 with the casing. The finger is provided with an extension 199 received through a slot 200 to the outside of the casing ,for manual manipulation of the finger. The extensions 183 and 199 are in adjacent positions so that both said extensions can be simultaneously manually manipulated for bringing both the pawl 16 1 and the finger 189 into inactive relation respectively with the ratchet-wheel and ro tary controlling-element,for instance when setting the parts.

The arms 169 and 187 are preferably located in adjacent relation for respectively being acted upon by and acting upon the clutch-lever 103. .A setscrew 201 is provided for adjustably positioning the actuating lever 161 for causing proper engagement of the pawl 164 with the teeth of the ratchetavheel, and a set-screw 202 is provided for causing proper relation of the finger 189 with the wall of the depression 191,

the set-screws also properly positioning the outer arms of the actuating lever and the controlled lever. A gage is provided for This s is determining the number of actuations which the rotary controlling element or the ratchetwheel is to receive for moving the depres.

sion 191 and finger 189 into coacting relation. This gage is instanced as comprising a gage-plate 205 which has bearing about the sleeve 155 for permitting rotation of the gage-plate with relation to the rotary controlling element or ratchet-wheel, for positioning said gage-plate with relation thereto.

The ratchet-wheel is instanced as having an index 206 thereon, its index being" an index of the number, and relation of the teeth of the ratchet-wheel. Instancing the ratchet-wheel as comprising one hundred teeth in its circumference, the index will be with said bearing to prevent turning of the stop. The stop 209 is movable in a direction parallel to the axis of rotation of the ratchet-wheel, shown by permitting the stem to slide longitudinally in the bearing,

and to be clamped in adjusted positions by means of a set-screw 214.

The depression 191 has an end wall 215 that is a wall extending substantially parallelwith the axis of rotation of the rotary controlling element. This end wall is -ar ranged to coact with the inner end 216 of the finger 189 for permitting the finger to drop into the depression, whereby the hook 188 is moved into range with the clutchlever. When the end wall 215 and inner end 216 of the finger are in such coacting relation, the zero mark on the index will register with the register-face 21.0 of the stop 209. If it is desired to set the said stop 207 for a given number of teeth to be out, the stop having been unclamped from the ratchet-wheel, it is rotated about the ratchetwheel until its register-face 208 registers with the number on the index corresponding to the number of tooth-spaces to be cut, whereupon the gage-plate is clamped in such adjusted position by means of a clamp nut 219 having threaded engagement 220 with the sleeve 155, whereby the rotary controlling element, the ratchet-wheel and gageplate on which the stop 207 is located are united as a self-contained unit. This unit is now manually turned until the registerface 208 on stop 207 contacts the registerface 210 on stop 209. The parts are now ready to begin the cutting of the teeth. hen the given number of teeth has been cut,'the inner end 216. of the finger drops past the end wall 215 of the'depression for moving the hook 188 into range with the clutch-lever. The self-contained unit may be returned to initial position as many times as desired without readjustment of the parts for cutting new gears having the same number of teeth. Adjustment for a given range of units of adjustment, instanced as one hundred, is thus provided It frequently occurs however that a range of adjustment is desirable which is greater than the number of teeth which can be provided on the periphery of a ratchet-wheel without making the teeth too small or the wheel to large for practical purposes; I therefore provide means for moving said rotary controlling element axially a given distance for each rotary movement of the same, which I ac complish by mounting the sleeve on the screw-rod 157, instanced as rigidly secured in the casing. Each rotation of the ro tary controlling element will therefore cause axial movement thereof a given distance, each of said axial movements representing a multiple of said original series of adjustment units. The depression 191 and the finger 189 are out ofregistry with each other lengthwise of the axis of rotation of the rotary controlling element during adjustment for such higher multiples of adjustment units. The width of the depression and the width of the finger and their positions are preferably such that the finger can be re-f ceived in the depression only when said zero mark has reached said stop 209 during the lowest multiple ofadjustment unitsr The depression is provided with a side wall 226 and thefinger is provided with a side face 227, this side wall and side face extending in directions crosswise of the axis of rotation of the rotary controlling element,the side face 227 being permitted to pass across the side wall 226 only when said depression has reached its zero limit of movement, in

the final series of units. of adjustment, the

finger otherwise riding upon the periphery of the rotary controlling element 153.

. The rotary movement of the rotary controlling element for causing coaction between the finger and depression for caus ing arrest of the clutch-lever takes place in the. direction indicated'by the arrow at in Fig. 6. The axial movementof this element for causing said coaction takes place in the direction indicated by the arrow 6 in Fig. 10. The rotary controlling element for each of its'revolutions representing one of the series of units ofadjustment, is moved axially for the distance of the lead of the screw-rod 15 7. The stem 211 is provided with a gage, 229, each of the markings of which repre-- sents' the axial movement due to one revolution' of 'the rotary controlling element.

Instanci ng the desired adjustment of th e controlling mechanism,- as herein exempli= iied, as two hundred and ninety teeth, the

clamp-nut219 is released for releasing the proximate end wall 230 of the bearing 212,

for the reason that the adjustment desired is in the third step or multiple of the series of units of adjustment. The gage plate hav-- 111g been clamped in place by means of the clamp-nut 219, andthe stop 209 having been clamped in position by means of the set screw 214:, the sleeve 155 is turned for retracting the rotarycontrolling element rotatively and axially until the register-face 208 y contacts the register-face 210, in which position the parts are in proper relation for having the first tooth-space to be cut on the gearblank operated upon. At thefcompletion of i each advancing movement'of the cutter-support, the clutch-lever 108 is tripped for moving the handle end 231 of said clutchlever toward the actuating lever 161 and causing actuation of the pawl for advancing the ratchet-wheel one tooth. completion of the cutting of' the two hundred and ninetieth tooth-space, whether one or more than one revolution of the gear blank has taken place, the actuating lever will be again actuated for advancing the ratchet-wheel for its two hundred and ninetieth time, whereupon the side wall 226 will i have been brought into, coacting relation with the side-face 227 and the end wall 215 At the will have been brought into, coacting relation with the inner end 216, so.that the finger 189 will be received in the depression 191, and q the controlled or arresting lever 186 will be swung on its pivot by means of the spring 194. for bringing the 110011188 intorange with the clutch-lever I 108, soqthat, when the tool-support is-returned to its limit of retracting inovement for again initiating a reverseswinging of the clutch-lever, the hook 188 will arrest the swinging of the clutch-lever when the 7 clutch-sleeve 101 is in neutral position, so that both the-clutches 91 and are out of operative relation for automatically stop ping the feeding of; the cutter-support.

A brake-plug232 is urged against the rotary controlling element by a spring 283 r for preventing overthrow of the. ratchetwheelupon actuation thereof by the pa'wl,

The spring is shown received-about the stem" 234 of the-brake-plug inthe socket of a socket-piece 235 having threaded connec-. tion 236 with the casing.

Having thus fully described" my invention, what Iclaim' as new and desire to j secure by Letters Patent,is v "1.; In mechanism 1 of the character gnieli tioned, the combination of a controlled memf ber, a'controlling member therefor, said controlled member and-controlling member having coacting parts between them, means for axially and rotatively adjusting the operative relations between said coacting parts, and meanscausingintermittent axial and rotative movements between said coacting parts for causing coacting relation between said coacting parts. j

2. In mechanism of the character mentioned, the combination of a controlled member, a controlling member therefor, said controlled member and controlling member having coacting parts between them, and means for adjusting the relation axially and the angular distance between said coacting parts.

3. In mechanism of the character mentioned, the combination of a controlled member, a controlling member therefor, said controlled member and controlling member having coacting parts between them, means for adjusting the relation axially andthe angular distance between said coacting parts, and a brake acting on said controlling member.

L In mechanism of the character mentioned,-the combination of a controlled member, a controlling member therefor, said controlled member and controlling member having coactin parts between them,- means for adjusting the angular distance between said coacting parts for given units of adjustment and for adjusting the distance axially between said coacting parts for multiples of said given units of adjustment, and means for causing intermittent rotative' and axial movements between said coacting parts.

5. In mechanism of the character mentioned, the combination of a controlled member, a rotary controlling element therefor, a rotary actuating element for said rotary controlling element, a rotary gage-member for the latter, means for adjustably positioning said gage-member with relationto said actuating element, and actuating means for said actuating element.

6. In mechanism of the character mentioned, the combination of a controlled member, a rotary controlling element therefor, a rotary actuating element for said rotary controlling element, means for axial adjustv ment between said rotary controlling element and said c'ontrolled member, a rotary gage-member for said'rota-ry actuating element, means for adjustably positioning said gage member with relation to said actuating element, and means for causing intermittent rotary and axial movements between said rotary controlling element and said controlled member.

7 In mechanism of the character mentioned, the combination of a controlled mem-- ber, a rotary controlling element therefor provided with a depression having awall extendinglengthwise of the axis of said rotary controlling element and a wall extending crosswise of said axis, said walls coact' ing with said controlled member, a rotary actuating element for said rotary controlling element, said elements connected for combined movements, and a screw-rod with which said elements have operative connection for causing rotative-movement of said firstnamed wall and axial movement of said second-named wall into coaction with said controlled element.

8. In mechanism of the character .mentioned, the combination of a controlled member, a rotary controlling element therefor, a rotary actuating element for said rotary controlling element, a rotary gage-member arranged to be rotatively adjustably positioned about the axis of said rotary actuating element, said rotary controlling element, rotary actuating element and rotary gage-member connected as a unit for combined movement, and a screw-rod with which said unit has connection, for the purpose described.

9. In mechanism of the character mentioned, the combination of a controlled member, a rotary controlling element therefor provided with a depression with which said controlled member coacts, a rotary actuating element for said rotary controlling element, a rotary gage-memberarranged to be rotatively adjustably positioned about the axis of said rotary actuating element, said rotary controlling element, rotary actuating element and rotary age-member connected as a unit for combined movement, and means for actuating said rotary actuating element for moving said depression into eoacting re- ;lation with said controlled member.

10. In mechanism of the character mentioned, the combination of controlled member, a rotary controlling elem nt therefor provided with a depression with which said controlled member coacts, a rotary actuat ing element for said rotary controlling elemeet, a r tary gagemember arranged to be rotatatively adjustably positioned about the axis ofsaid rotary actuating element, said rotary cont-rolling element, rotary actuating element and rotary gage member connected as a unit for combined movement, means for actuating said rotary actuating element for moving said 'depresslon into coacting relation" with said controlled member, and a brake acting" on said unit.

11. In mechanismof the character mentioned, the combination of a controlled member, a rotary controlling element provided with a coacting part for said controlled member, a rotary gage-member for said con trolled member provided with a stop arranged to be rotatively adjustably positioned with relation to said coactingv part, and a 'coacting' stop for said last-named stop whereby the range of rotary movement of said rotary controlling element is determined.

12. In mechanism of the character men tioned, the combination of a controlled member, a rotary controlling element provided with a coacting part for saidcontrolled member provided with a wall extending lengthwise of the axis of rotation of said rotary controlling element, and a wall extending crosswise of said axis, means for imparting rotary and axial movements to said controlling element, a stop arranged to be rotatively positioned with relation to said coacting part and axially positioned with said coacting part, and a coacting stop for said first named stop arranged to be passed in the rotary movement of said first-named stop in selective rotations of said first-named stop and whereby the range of combined ro tary and axial movement of said rotary con trolling element is determined.

13. In mechanism of the character mentioned, the combination with a reciprocating member, of an arresting member therefor, a rotary controlling element provided with a depression for said arresting member, a ratchet-wheel having operative connection with said rotary controlling element, a lever actuated by said reciprocating member, and a pawl for said ratchet-wheel actuatedjby said lever, and constructed and arranged for moving said depression into coacting relation with said arresting member. i

14. In mechanism of the character mentioned, the combination with a reciprocating member, of an arresting member therefor, a rotary controlling element provided with a depression for said arresting member, a screw-rod for said rotary controlling element, a ratchet-wheel having operative connection with said rotary controlling element, a lever actuated by said reciprocating memher, and a pawl for said ratchet-wheel actuated by said lever for moving said depression rotatively and axially into coacting relation with said arresting member.

15. In mechanism of the character mentioned, the combination with a reciprocating member, of a rotary controlling element and a ratchet-wheel having operative connection with each other, a pawl for said ratchetwheel, and adjacent levers, one of which is an arresting lever for said reciprocating member and the other of which is an actuating lever for said pawl normally in the range of movement of said reciprocating member and actuated thereby, and said rotary controlling element provided with a coacting part for said arresting lever brought into coacting relation with said arresting lever by the actuations imparted to said ratchet-wheel by said actuating lever and pawl;

16. In mechanism of the character mentioned, the combination, with a casing,..of

a rotary controlling element anda rotary actuating element having operative connection with each other located inside said casing, and an arresting lever and an actuating lever pivoted to said casing and having arms extending outside said casing,- said actuating lever having operative connection with said rotary actuating, element for actuating the 7 same, and said rotary controlling element provided with a coact-ing part for said arresting lever, for the purpose described.

17. In mechanism of the character mentioned, the combination of'a casing, a rotary controlling element and a ratchet-wheel having operative connection with eachother located in said casing, a' pawl for said ratchetwheel, and an arresting lever and an actuat ing lever for said pawl pivoted to said casing and respectively having an arresting arm and; an actuating armextending outside said casing," and said rotary controlling element provided with a coacting part for said arrestingflever brought into coacting relation-with said arresting lever by theactua tions imparted to said ratchet-wheel by said actuating lever and pawl.

18. In mechanism of the character men--- said casing, said rotary controlling element provided with a coacting part for said arresting lever brought into coacting relation with said arresting lever by the actuations imparted to said ratchet-wheel. by said actuating lever and pawl, and adjacent means having operative connection with said pawl and with said arresting lever extending outside said oasing for manually moving said pawl and arresting lever.

19. In mechanism of the character mentioned, the combination with a frame, and a reciprocating member, ofa casing secured to said frame, a rotary controlling element and a ratchet-wheel having operative connection with each other located in said casing, apawl for said ratchet-wheel, an arresting lever for said reciprocating member and an actuating lever for said pawl pivoted to said casing and respectively having an arresting arm and. an actuating arm extending outside said casing, said actuating arm normally in the range of movement of said reciprocating member and actuated thereby, said rotary controlling element provided with a coacting part for said arresting lever brought into coacting relation with said arresting lever by the actuations imparted to said ratchet-wheel by said actuating lever and pawl, and means operatively connected with said pawl extending outside said casing for manually placing said pawl in inactive relation.

20. In mechanism of the character mentioned, the combination with a reciprocating member, and a casing, of a rotary controlling element and a ratchet-wheel having operative connection with each other, a pawl for said ratchet-wheel, and an arresting lever and an actuating lever pivoted to said casing and having arms extending outside said casing, one of said arms being an arresting arm for said reciprocating member and the other of said arms being an actuating arm normally in the range of movement of said reciprocating member and actuated thereby, said rotary controlling element provided with a coacting part for said or resting lever, and said levers being springpressed for normally urging said arresting lever into coaction with said coacting part and normally urging said actuating lever into said range of movement of said reciprocating member.

21. In mechanism of the character mentioned, the combination with a frame and a reciprocating IIIQIIIbQIQ Of a casing secured to said frame, a rotary controlling element and a ratchet-wheel having operative connection with each other located in said casing, a pawl for said ratchet-wheel, an arresting lever for said reciprocating member and an actuating lever for said pawl pivoted to said casing and respectively having an arresting arm and an actuating arm extending outside said casing, said actuating arm normally in the range of movement of said reciprocating member and actuated thereby, said rotary controlling element and said arresting lever provided with coacting arresting parts brought into coacting relation by the actuations imparted to said ratchetavheel by said actuating lever and pawl, and means operatively connected with said pawl and with said arresting lever extending outside said casing for manually placing said pawl and said arresting part of said arresting lever in inactive relations.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ARISTIDES R. MURRAY.

Witnesses CHARLES E. Vanna, THERESA, M. SILBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 1

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