" Sept. 24,1946. 2,408,301 ' c. M. EASQN CLUTCH 'Filed Jan. 22, 1945 5 Sheets-Sheet 1 '. INVENTOR. Clarerwe?i [6260721, - BY ' ' gm““W ' ‘ ' s v _ 4K s¢pt. 24, 1946.‘ ' c. M, EASON ‘ ' ‘ ‘ 2,408,301 CLUTCH Filed Jan. 22, 1945 ‘ 5 Sheets-Sheet 2 P. I??? BY @940 5 Sept. 24, 1946. C. M. EASON - , 2,408,301 , CLUTCH 5 Sheets-Sheet 4 . ‘Filed Jah. } 22, 1943 v . IINVENTOA/ Lia/‘57206171015072, , m’. " ' ' ' > @515 Sept. 24, 1946. .c. M. EAS-ON 2,408,301 CLUTCH Filed Jan. 22, 1945 5 Sheets-Sheet 5 ‘ ' 2,408,301 Patented Sept. 24, 1946 UNITED STATES' PATENT OFFICE , 2,408,301 ‘ I ' CLUTCH - V Clarence M. Eason, Waukesha, Wis. Application January 22, 1943, Serial No. 473,208 ~ 33 Claims. (01.192-36) 1 2 This invention relates to clutches, and has to dowith a combined clutch and brake mechanism. My invention is directed to clutch means of the character referred to. comprising cooperating clutch and brake members including brake servo means associated therewith, the parts being so related and cooperating in such manner that in Further objects’ and advantages of, my invention will. appear from the detailed description. . Inthe drawings: Figure 1 is a fragmentary side view of apress, with clutch means embodying my invention ap plied thereto; I Figure 2 is a front view of the press and the clutch meansshown in Figure 1; a the act of applying the brake the clutch is re l; leased, and in releasing the brake the clutch is Figure 3, is a view, on an enlarged scale, of the applied, assuring proper control of the operating parts at all times. More speci?cally, ‘I provide clutch means. and associated parts, shown in front elevation‘at the lower half of this View and an axially shiftable non-rotatable brake mem in axial section at the upperv half of thispview, certain parts in the upper half being shown in ber and associated means whereby'axial shifting elevation and certain parts being broken away; Figure 4 is a fragmentary axial sectional view of the'clutch means, partly broken away and in section to show they cam rings and balls andas of the brake ‘member in one direction into non braking or releasing position effects the clutch engagement, and axial shifting of the brake member in the opposite direction into its opera tive 0r braking'position effects the declutching operation, the latter operation being assisted by energy stored in the brake servo means by over running of the shaft controlled by the clutch in cident to the declutching operation.~v The clutch is also preferably provided with self-energizing ' sociated parts, on an enlarged scale; Figure 5 is an outer end view of the movable 20 inner cam ring for shifting the axially movable brake member; , ‘ Figure 6 is a sectional view taken substantially on line 6—-6 of Figure 5; . > Figure’? is a sectional view taken substantially’v means which functions after initiation of‘ the ~ clutching operation to hold the friction clutch 25 on line 1-1 of Figure 4; Figure 8 is a diagrammatic view illustrating members, preferably cone members, in clutching the relation between the clutch and the brake contact under considerable pressure. members, and the effect of the overrunning of the clutch controlled shaft and associated parts; Another important aspect of the present inven tion is the use of the servo action for the inter Figure 9 is a vertical transverse sectional view of the bracket supporting the clutch operating rupted rotating brake member, in order that the initial force applied to the non-rotating brake member may be held' to very low values, such, as may be readily controlled by means of a conven shaft, showing the over-center spring and pawl means of the clutch control mechanism; and tional foot treadle without causing undue fatigue Figure v10 is a sectional view taken substantial 35 ly on line I0—‘l0 of Figure 9, certain parts being shown in elevation and certain other parts being Another important feature, of my invention is of the operator. " 7 that the clutching and declutching operation, ac companied by the concomitant relative move broken away. ' . I have illustrated the clutch mechanism of my invention as applied to a press of known type, by ment of the braking member, out of and into co operating braking contact, is effected by axial 40 way of example, to which it is well suited, though it is to be understood that my clutch mechanism is in no way limited to that particular use, since it is suitable for many other purposes, and may trolled'shaft is not necessary for effecting the ‘be applied to any use to which it is suited. The clutching. and declutching operation. My im 45 press shown is a so-called back geared type where ‘ shifting of a non-rotatable brake member and in such manner that rotation of the clutch con proved clutch gives complete control of the driv en shaft. throughout the entire 360 degrees of I rotation thereof and renders it possible to stop the shaft at any desired point in its rotation. A the clutch is located on- a secondary or back ‘shaft which, because of the gear reduction, makes several revolutions to one revolution of the main crank shaft. The clutch structure, however, can further and important practical advantage of 50 very readily be applied directly to the crank shaft and controlled by substantially the same type of the clutchof my invention is that it may be ap plied to a ?ywheel or analogous member of a mechanism which is used to control my improved press or like machine without necessitating‘ob- ‘ clutch when mounted on a back shaft. jectionable changes in the ?ywheel and associ ated parts,v particularly the bearings therefor. In Figures 1 and 2 of the drawings I have shown 55 fragmentarily a portion of a frame 7‘ of a press 2,408,301 4 3 by means of the spanner wrench a distance equal P of known type, this frame having mounted to that between two adjacent openings. By re peating that operation the flywheel 3| may be adjusted to the desired extent in either direction axially, for a purpose which will be explained more fully hereinafer. An oil seal member 36, of known type, is disposed within the inner end portion of collar 2!}, con?ned therein between therein, in a suitable manner, a rotatable crank shaft l I. A bracket I2 is bolted or otherwise suit ably secured to frame f at each side thereof and extends upward and rearward therefrom. Each of the brackets l2 supports a bearing structure 53, and these bearing structures rotatably support a back geared or secondary shaft M extending transversely of frame 9‘ below and in back of the crank shaft M. It will be understood that the u press is provided with a ram connected by a con necting rod to the crank of shaft l l, and associ ated parts, which have been omitted, for clear ness of illustration and as not being necessary to a clear disclosure of my invention. A spurpinion I5 is keyed on one end of drive shaft Id, at the opposite side of frame I to that shown in Figure 1, and meshes with a gear is secured onthecrank shaft H at the same side of the frame, whereby rotation of shaft J4 imparts rotation to the crank shaft. ~ the outer race of the inner bearing 21, the re taining ‘ring 23, and a snap ring 31 engaging in a corresponding groove in the inner face of collar 29. A tubular hub Ml, having a tapered bore cor responding to the tapered portion l8 of shaft it. is secured tightly on portion l8 of shaft I 4 by a nut M screwing onto stud l9 and an associated lock washer 42 held in pressure contact with the outer end of hub 48 by nut 4!. Hub 40 is further secured against rotation relative to shaft M by a key 43 engaging in keyways in hub is and in por 20 tion I8 of shaft M, the lock washer 42 having a - Shaft Hi extends outwardly beyond'thebearing structure 13 at the otherside of frame f, thatis, portion struck therefrom and engaging in the key way of hub 48 at the outer end thereof. ‘It will be seen that hub 46 is effectively secured to shaft M in a .manner to prevent relative movement be at the side thereof remote from pinion l5 and gear l8, and this portion of shaft 1.4 vis tapered 25 tween these two members, and the ‘inner end portion of this hub is interiorly recessed to ac outward'at i8 for a portion of its length, being commodate the outer ‘end portion of the sleeve 22 provided at its outerend with a reduced threaded of the outer bearing 2!. Hub 49 is also provided, end 19. A comparatively heavy mounting collar at its inner end, with an exterior circumferential .20 is rotatably supported on shaft l4, adjacent the side of frame .7" remote [from ‘pinion I15, by 30 ?ange 45 having, at ‘its outer circumference, a ?ange 45 extending outward lengthwise of hub means of ball bearings, 2110f knowntype, each 48. A loose thrust washer Q8 preferably of non having an inner race in the form of a relatively metallic anti-friction material is interposed be long sleeve 22 ?tting about shaft M, the sleeves tween the flanged end 25 of the ?ywheel adjust being disposed in endwise contact. A ?anged ing sleeve 29 and the inner face of clutch hub ring _2.3,is secured to shaft M, by one or more dog~ 463. When the ?ywheel is rotating freely on its point set screws, one of which is shown at 24%, ball bearing-5 2!, ‘with the shaft and clutch sta with its ?ange engaging the rabbeted inner end tionary, there is a slight running clearance be of the inner sleeve 22 ‘in endwise contact there tween these thrust surfaces, but when the clutch with. Collar ‘29 is provided, at its outer end, with an inwardly extending ?ange‘25 extending about 40 is engaged and there is no relative rotation be tween ?ywheel and clutch, the axial thrust reac the outer end portion of the outer sleeve 22 and tion due to ‘the servo strut action (to be later in contact with the outer race of. the outer bear described) is transmitted directly from the clutch ing- 2!, vand is further provided, at "its inner end, hub to the "?ywheel itself through this thrust with an outwardly extending circumferential washer. At no time is there any axial thrust on .flange 26. The outer race of the outer bearing the ball bearings 2|, due to clutch servo strut 12.! contacts the inner face of flange 25 and re action. These bearings do'not take end thrustex strains collar 28 against endwi-se movement in cept the very small amount which might be re ward along shaft 14, the outer bearing 2| thus quired to maintain the ?ywheel and the driving functioning as a ‘thrust bearing. Flange 26 is provided with _a plurality of openings bored there~ . clutch ‘cone in proper axial alignment. in, one of which is shown at 2'5, these openings regard, it will be noted that the thrust ring 48, in its abutment against the outer end of collar '25], cooperates with the outer bearing 2| for re straining the mounting collar 243 and ?ywheel 3| against endwise movement in either direction. preferably being disposed close together. Two of these openings, preferably two diametrically opposite openings, receive ‘reduced studs 28 at the inner ends of hollow plungers 29 *slidably mounted in corresponding bores in the hub 13-3 of a flywheel 31 of suitable construction. Each of the plungers 29 is urged inward by a coil com- In this A female ‘clutch member 52, having an out wardly converging clutch surface, is suitably se cured, conveniently by bolting, to flywheel .31 at ‘the outer side thereof. Clutch ‘member 52 co ing therein at its inner end, the outer end of 60 operates with a male clutch member '53 having spring ‘32 seating against a retaining ring 33 fit riveted thereto a clutch lining .54, the latter’ ting in a corresponding annular groove in the clutch member being bolted to a ?anged ring 55 pression spring 32 extending thereinto and seat outer end of hub 30 ‘and bolted thereto. Ring 33 mounted‘ about hub 40, the exterior surface of screws onto the threaded outer end portion 3-4 which is of stepped formation, as shown. A of collar 20. It will be seen that by rotating col 65 ?anged collar 56 is secured to ring '55 by bolts, lar '28 relative to ?ywheel 3!, the latter may be one of which is shown at .57., which secure col adjusted axially in either direction. For that lar til and clutch member .58 ‘together, the bolts purpose I preferably provide a spanner wrench 57 screwing into the heavy ?ange at the outer having ‘two studs equal in thickness to ?ange 2t end of collar 56, and clutch member 53 being and disposed to enter the two diametrically opp-o 70 rabbeted for reception of the ?ange of ring 55, site openings 21 which receive the studs 23 of the the collar and the clutch member being thus ef plungers 29. By means of the stud of the spanner fectively secured together ‘with the ?ange of ring wrench, the‘ stud 28 of the plunger may be dis v55 clamped between the inner portion of clutch placed outwardly so as to release ?ange 26 from member 53 and the ?ange at the outer .end of 75 hub 30, after which the collar 20 may be turned 2,408,801 5 6 , collar; 56,~ bolts 9 51. positively ‘securing the‘ parts together; > W . , tarded' or blocked, will cause the balls .18. to move into the shallower ends of the grooves‘ 15 and 16,-‘thus forcing cam ring 63 axially inwardly . ~Ring:55 and flange 45 of» hub “are connected by‘ 1. clutch: self-energizing mechanism’ comprising away from ring 10 a distance somewhat less than ‘one-half the diameter of'the respective balls 18, equal to approximately one-third of the diam ‘rigid ‘struts 60 of‘ dumbbell formation, constitut ing drive transmission members, andtlengthwise ‘compressiblespring struts'6‘l constituting energy eter- of the ball. At that time eachofwthe balls 18‘ is at the shallow ends of the two cam run ways, as will be clear from Figure 4, and, if the. transversely of the axis of shaft 14 in such direc tion that they act under compression to transmit 10 brake member 61 is held against rotation, to block further rotation of the cam ring 63, this will the drive from ring 55, when the clutch member cause the clutch 52,53 to become declutched and ‘53 is driven, to ?ange 45 of- hub 40, for rotating will function to stop rotation of shaft l4‘. ; the shaft I 4. Thestruts 5| are ‘inclined oppo Brake member'?'l cooperates with a female sitely to’ struts 69 and function both as energy storingvmembers and as reverse drive'members, 15 brake member 89 of dome shape, provided at its inner end with a rim 8| having an inner braking aswill be ‘explained more fully later. In prac tice' I usually provide three struts 60 and three , surface cooperating with the braking surface 68 of member 61. Brake member.80 is provided, struts 6|, though a larger number of struts may at its outer end, with an inwardly extending hub be used if desired; Preferably, the struts are con structed and connected to-ithe vpartsass'o'ciated 20 82 formed with an interiorkeyway 83 slidably receiving a key 84 seating in agcorresponding therewith in the manner shown and described in ‘recess in a bushing 85 ?tting within hub 82,: An detail'in my copending applications, Serial No. adjusting nuti8l, of: cupped shape, is threaded 279,899, ?led June -19, 1939, and Serial No. on the outer end portion of bushing \85, this nut 232,588, ?led July‘ 3,‘ 1939, now issued as Patents 2,308,679 and 2,308,680,'respectively. Within the 25 being provided at its inner end with an outwardly ‘storing ‘members.’ ' The ' struts 60 are inclined extending circumferential ?ange, 88 broader aspects of my invention, however, any other suitable known type of struts may be used. seating against the outer end of hub 82. A ?anged re taining ring 89 is secured to the ‘outer end of brake member 89 by means of bolts, one ofwhich 7A cam ring 63 is mounted about the outer por ~tion of hub 40 outward beyond ring 55, in end wise abutting relation thereto with an interven isshown at 90, having socketed heads for recep tion of a suitable socket wrench. Brake member ing thrust ring 64. Ring 63 is provided with an 89 is held against turning movement, but is free outwardly extending circumferential ?ange se- > for axial shifting movement in either direction, cured, asby means of bolts, one of which is as will be explained more fully later. , Normally, shown at'65, to hub 65 of a male‘brake member vEi'l' having an outwardly converging braking sur 35 ?ange 88 of nut 81'” is clamped tightly between 'hub 82 and ring 89,‘ effectively securing these face. provided by a brakelining 68 riveted or parts together and restraining member, 80 against otherwise suitably secured to the rim of member axial movement relative to bushing 85. By ‘61. A second cam ring 19, provided with an inner slightly loosening the bolts 90, sufficiently to re ‘circumferential inwardly extending ?ange ‘H, is screwed on the outer end of‘hub 40, at 12, with 40 lease'the clamping action of ring 89, nut 81 may be rotated by means of a suitable wrench, for ?ange ‘H in abutment with a shoulder 13 of hub contact with, the outer end of ring 10 by nut 4| . It will be seen that ring 19 is-thus ?xed on hub 49 ‘for rotation ‘therewith, and also provides an which purpose nut 81 is provided at its outer end with a hexagonal element 9|, rotation of the nut serving to effect adjustment of brake member 80 axially along bushing 85 in the desired direction abutment member ?xed against axial movement and to the desired extent,'after which by-tight ‘40; '_'_Lock washer 42 is maintained in pressure in veither direction,’ whereas the male clutch ’ _ :member '53 and the male brake member 57 are ening the bolts 99 the parts are clamped together ' as before. I a , ~A ?anged cap 93 is bolted to cam ring 10, at 50 the outer side thereof, and extends therefrom outward about and across‘the outer end of shaft as ,well as for turning movement thereabout, as l4. Cap 93 is provided, at its outer end, with a will appear more fully later. Lock pins 10a fur hub 94 disposed coaxially with shaft l4, in which ther secure 'ringflll‘against turning on hub 40. is ?xedly secured, by welding or in any other ’ 1 ‘As is shown more clearly in Figures 4 and 7, disposed in endwise abutting relation and are ‘mounted for axialjmovement relative to hub 40, rin'gjlll is provided, in its inner face, with three ‘ suitable manner, the inner end of a stub shaft equally spacedgrooves or recesses 15 increasing 95. A thrust ball bearing 96 is mounted about the inner endportion of stub shaft 95, with its inner race abutting the outer end of hub 94, this jin'depth‘in the direction'of rotation of ring 19 ‘with hub 40 and shaft l4, indicated by the arrow ‘a. Each of the grooves or recesses 15 is concen tric with the axis of shaft l4, and these grooves ‘or recesses are equidistant from such axis. ‘The Tring 63 is provided in its outer face with three grooves or ‘recesses 16, corresponding to the jgro'oVes or recesses 15‘ but disposed’ reversely bearing 96 being disposed in an annular recess 60 in the inner face of a cam ring 91 shown more clearly in Figures 5 and'6. Ring 91 is provided with an outwardly projecting hub 98 having _ spaced slots therein providing outwardly extend ing couplingv projections 99. A second cam ring ' ,‘theret'o, decreasing in depth in the direction of 65 II!!! is disposed about stub shaft 95 outwardly rotation of'shaft 14 when that shaft is driven thereof from ring '91, this second ring having in its lthrough' the clutch‘ means, in a manner to be de scribed? The'recesses or grooves 15 and 16 are bearing structure I DI the inner race of which arranged in cooperating pairs, the rings 63 and 'n‘llllb'eing properly related to that end, and pro vide camrunways for steel balls ‘l8v mounted ‘therein. It will be seen that turning movement ,of. ring 10 in the ‘direction in which shaft I4 is driven, voccurring while ' corresponding’ turning "movement 'of the other cam ‘ring 63 is" being re outer face an annular recess receiving a ball iscon?ned between ring I90 and anut I02 thread ed on a reduced screw stud I03 formed at the . outer end of stub shaft ‘95, with an intervening lock Washer I04. The cam ring N19 is, similar in construction to thecam ring 91. and is provided with an inwardly extending hub.v I05 which'is appropriatelyv slotted to'provide coupling projec~ 2,408,301 7 8 589 :of ring 9], whereby the rings \9?! .and I00 are stantially spherical heads =Izl9. Heads I I9 receive socket members I20 ?tting thereabout, securcd’to coupled together for turning movement as a unit. It will be seen that the acam rings 91 and ‘I00 *manner, conveniently :by nuts -I 22 screwing upon are restrained against axial movement away from each other, ‘by the thrust/hall bearings '96 and the rods. The lower ends of rods I2 I have so cured thereon, conveniently by nuts I23 screw I01 and associated parts. ing onto vthe rods, ‘eye members I24 which re tions disposed :to engage ‘between the projections ‘the :upper ends of thrust rods I21 ‘in a suitable The :bushing .85 is slidably mounted On the cam ‘rings 9.‘! and III!) for ‘relative axial movement in ceive pivot pins I25 suitably secured, convenient ring I08 is disposed within bushing 85, between strain ‘brake member 80 against turning move .grooves or recesses ‘H2 in the inner face of the invention, any other suitable means may be pro shift cam ring We. It will :be understood that the grooves or recesses HI ‘and H2, and the to the cam rings 97!, I!!!) in either direction. .lyby nuts I26, to outwardly projecting arms ‘I21 either direction, .and this :bushing supports the 10 of a torque resisting yoke I28 bolted to a flange I29 at the outer end of a bracket I30 bolted to ‘brake member ‘80 for relative axial movement in frame I of the press. The thrust rods III re either direction, .as above described. A cam shift ment, while permitting axial movement of this the rings 91 and mo, and is secured to bushing either direction, there being slight 85 by set screwsIflS. The axial extent or width 15 member -80 looseness between the vmember-s [I9 and I20 of of’ ring N38 is less than the axial distance be the ball and socket connections, su?icient to pre tween .the rings '9] and fill), as will be clear from vent objectionable bindingin the shifting of brake Figure 4. Cam :ring 91 is provided in its outer .member #8. A brake operating rod I34 ispivoted :face with three equally spaced grooves or de pressions III which decrease in depth in the di 20 at its upper end to the lower end of brake lever IrI B, as shown in Figure l, and extends therefrom :-rection of rotation of shaft I4. The shift cam to ‘an arm -~I3-I ‘pivoted at its lower end, at I32, ring IE8 is provided in'i'ts inner face with three to the ‘lower end of rod I34. Arm IE4 is secured grooves or recesses H2 which are reversed rela at its ‘upper end upon the outer end of a shaft tive to the grooves or recesses III and, accord ingly, increase in depth in the direction of rota 25 I33 rockably mounted through bracket I38. By turning shaft I33 in proper direction the cam tion of shaft Id. .At its outer face the shift cam ring 91 may be turned in either directiondesired ring 1'08 is provided with three grooves or re for shifting brake member 8.!) axially into brake nesses H3 disposed in the same manner as the releasing position or brake setting position rela grooves or recesses I I I, and cam ‘ring It!) is pro vided in its inner face with three grooves or so .tive to brake member 61, in the manner above described. Within the broader aspects of my recesses .I I4 disposed in the same manner as the grooves or recesses II3 and IM are disposed in . ' cooperating pairs, each pair of grooves providing a cam'runway for a steel ball I I5 mounted there in. A brake lever '! I6, provided at its inner end with an annular head III, is suitably secured, conveniently ‘by rivets 'I I8, to the inner end of .cam ring 91.. It will be clear that ‘by moving lever .‘IliB in one direction and thereby turning ring ‘91 in :a direction opposite to the direction of rotation of shaft t4, the shift cam ring IGB will be .forced to the left, as viewed in Figure 4, thus shifting the bushing I35 axially toward the :left:and with it the brake member 811, moving the latter away from brake member 61 into brake releasing ‘position. By turning the brake lever in the opposite direction, and thereby imparting - corresponding turning movement to the rings 78.? and Hill, the cam shift ring 168 will lee-forced to the right, ‘into the position shown in v*li‘igure 4, vided [for imparting the desired turning movement In Figure .8 I have shown diagrammatically the parts in the positions which they occupy when the braking means has been setand the clutch member 53 has been shifted into declutched posi ticn. The arrowa indicates the direction of rota- » tion of shaft 14 when it is driven by the ?ywheel s1 through the ‘clutch. Referring first to the mode of operation which occurs when the clutch structure is revolving, it will be seen that when the brake member 80 is shifted toward the right it engages brake member 5], thereby exerting “braking action thereon, which retards or stops further .rotation of thisinterruptable .brakemem .ber ‘.67? almost immediately. Thereu-pon, the con tinued rotation of the shaft I4 and the clutch releasing servo v.cam ring 10 .acts through the servo .balls'JB to shift the other cam ring 63 toward the right. This shifts the driven clutch element ‘53 towards and into its clutch releasing position, such being effected substantially entirely from being then spaced from ring I09 a distance some servo energy. As the shiftable cam ring 63 and what ‘less than one-half the diameter of the interruptable brake drum .6] shift toward the respective balls H5. This movement of’ ring I08 right in this servo-actuated clutch releasing op shifts the ‘brake member 83 toward the right, as eration, the gcontrollable brake ring 8!) follows shown in Figure 3, into engaging and brake set up this shifting movement, .oontinuing to main ting relation to the brake wmember El. Prefer ably, the ‘ball receiving recesses or vrunways of 60 tain vits frictional pressure against the interrupt ..ab-le brake members]. The shifting of the driven the rings 97 and Idli and IE8 are disposed sub .clutch element 53 into clutch releasing position stantially tangent to a circle struck from ‘the .compresses-thesprings G-I ’ of the spring distended axis of stub shaft I35 which, as noted, is vcoaxial reverse acting toggle struts ,6I, storing energy in with shaft I4, rather than being substantially effective to .reengage the concentric with the axis of the latter :shaft as (55 these springs which .olu-toh .as soon as the controllable ‘brake .ring '80 are the recesses ‘I5, 15 :of rings ~63, ~13, since I is backed away from the .interruptable 'brake ?nd that this'tangent arrangement of the grooves drum 6] in the .clutch engaging operation. The or recesses of ‘the rings 97 and Hi0 and I138 is ‘controllable brake .member 80 may be shiftedinto more e?icient for obtaining the desired cammin'g this clutch releasing position solely under manual action. energy, or it ‘may be actuated hydraulically or Brake member 80 is provided, at diametrically pneumatically, .or it may respond to an auto opposite points thereof, with integral bosses :I‘i’i matic one-cycle stop mechanism which can be through which are secured :pins II;8, convenient set toj-produce single trip operation .or repeating 1y by nuts screwing .on their inner ends, these pins ‘being providedat their outer ends with sub operation of the punch press,as desired. .In the . 2,408,801 9.. 10 embodiment illustrated, I have shown the. con; trollable brake-member 80 responding tosuch a in brake releasing direction and is completed by the self-energizingtorque transmitted through the toggle struts 60, the brake means being set upon completion of the declutching operation mechanism. As will be described later, this auto- ‘ matic mechanism "comprises a biasing spring I48 (Figures 9 and 10), which acts alternatively ‘to \ shift the controllable brake member 80 either toward the clutch releasing position or toward the clutch engaging position. When said brake member is shifted toward its. clutch releasing and being released upon completion of the clutching operation, so that the brake means retains control until the clutching operation has been completed and until and'after completion of the declutching operation. Further, .whenthe position this Ibia'sing spring I48 is operative to shaft I4 is'not being driven and is at standstill, exert more pressure tending to movethebrake as when the clutch is engaged and flywheel 3I member in this direction‘ than the toggle springs is not being driven, the shaft I4 may be clutched M’ can exert in the opposite direction. Hence, to. and declutched 'from'the ?ywheel 3| by axial when the clutch. is released the brake member shifting of brake member 80 in proper direction, 80 ;remains in this clutch releasing position, 15 ‘which is desirable to facilitate slight manual shifted to the right in opposition to the pressure turning of the crank shaft of the press formak of the toggle springs'?l'. . ’ ‘ ' ' . ing» adjustments or for other purposes. In thus In this clutch releasing position of'the parts, releasing the clutch with the shaft I4 at a stand a braking force is also exerted on the driven shaft still, the spring struts BI are compressed to ya I4 from the. brake members 61, 80. vThis brak 20 certain extent, and ‘ upon movement of brake ing force is‘effective through the cam ring 63, member‘ 80 ' in .brake releasing direction, the thrust washer 64, driven clutchelement ‘53 and spring struts 6| areeifec'tive for‘ moving clutch toggle struts to the driven shaft. The‘servo balls 18 are also operative‘ to transmit braking force through the positive end stops atvthe'opposite ends of the inclined runways 15, ‘I6 and through the cam ring 10 to the ‘driven shaft I4. Thus, braking retardation is continuously maintained member 53 into cooperating contact with clutch ' member 52, though not under the high clutch ing pressure available-when ‘shaft I4‘ is being driven from ?ywheel 3I by the thrust then‘. ex erted by the strut members ‘60, as vabove ex ~ plainéd. It is possible, howevergrto clutch? and on the driven shaft l4 so long as the clutch re declutch the driving member'ror' ?ywheel 3|? to mains released. It should be noted that inthe 30 the'driven member or shaft I4 ‘when this shaft 'is " above described clutch releasing operati0n,‘the at standstill,’ which 'is- advantageous for the extremely high force which the clutch releasing servo mechanism 15, 16, ‘I8 can exert is capable of freeing the clutch surfaces no matter how reasons stated. , . ' ~ 7 ' T_ “ >While I preferably provide the cam balls and. verse operation. of engaging‘ the -clutch,.the con cam runways therefor for effecting axial shift; ving of the‘brake member Wand of the‘r-ingv 63', as. reducing friction, the invention is not limited trollable brake member 80 is merely backed away . to this form of brakeshi'fting 'means. 1_ Hydraulic tightly they may be forced together. In .the re from the int'erruptable brake member 61 in a means, pneumatic means and "other forms 10f shifting movement toward'theleft. This per actuating ‘means may be employed for effecting mits the compression springs 6|’ on the spring 40 the axial shifting of brake member 80 ,in'the struts 6_I to shift the driven clutch element .53 desired direction and to the desired extent for back into clutch engaging position, whereupon the self-energizing struts 60 complete the'high pressure engagement of the clutch surfaces. ‘The clutch is now engaged and the brake released. Referring now to the operation of the clutch when the flywheel is not being driven, the oper ation of releasing the clutch at this time is like wise performed by shifting the controllable brake member 80 to the right. This ‘merely transmits corresponding shifting force to the then inert brake drum '6'! which in turn is transmitted through the cam ring 63 and thrust washer 64 to the driven clutch element 53. II‘hus, this driven clutch element is shifted to clutch releasing posi tion solely by shifting force imparted to control lable brake member 80, and without any servo ‘boost. It will be seen that the clutching and cooperation with brake member 6‘! in'the man ner above described. vThe clutch member 53lmay be slidably mountednon hub 40 and on flange 4301? this hub, by means of theringi 55 and collar 55, or, if desired, the clutch member 53 may have a‘ ?oating mounting as provided by ‘the self energizing mechanism comprising thegs/truts 60 and 6|. Preferably'I provide three struts60 and three struts 6|, though the number of struts em.‘ ployed maybe varied within limits, but the mini mum numberof struts ofeach kind should‘ be three, as will beiunderstood. > p _ v r _. - As previously stated, any suitable means may be provided for operating ‘the brake lever-in proper direction to cause shifting of brake mem ber 80 in the desired direction axiallyf I prefer ably provide, however, the control means shown declutching operations, accompanied by the brake herein and which will now be described. Shaft releasing and the brake setting operations, may 60 133 is ,rockably mounted in ball bearings‘. I35' be performed at any -point in .the ‘rotation of‘ suitably supported by bracket I30. 'Anvarm' I36 shaft I4, and, accordingly, of the crank shaft driven from. shaft I4, which is advantageous in that rotation ofv shaft I4 ‘or of the crank shaft of the press, through a de?nite angle or througha complete revolution is not necessary in order to effect either the declutching or the clutching operation. 4' ‘ ~ -' From what has been said ,it will be seen that is clamped on the inner endv of shaft I33. and extends downward therefrom this arm being pro 'vided, at its lower portion, with an integral sock et element I31 and, below socket element I31, with an integral eye I38 disposed substantially perpendicular‘to socket element I31. » An upper spring abutment head I39 is pivoted to eye.l38 by meansof ,a'pivot bolt ‘I40 secured thereto by the clutch releasing operation, when shaft I4 is 70 ‘means of a nut and associated washer, and a lower spring abutment head MI; is pivoted, by being driven, is started by movement of the brake 'means of a bolt I42, to a boss I43 formed integ member 80 in brake engaging direction, and is rally with the web. elements I44 and I45 of completed by servo energy derived from rotation of shaft I4; and the clutch engaging operation bracket I30,v de?ning with adjacent portions is started by movement of the brake member 80 75 thereof a housing for arm‘ I36 an'd'the parts 2,408,301 11 associated therewith. Bolt I42 is provided, at its inner end portion, with a reduced stud I46 on which is pivoted another spring abutment head I41. A relatively heavy compression spring I48 seats at its ends against heads I39 and MI about short studs or necks extending therefrom, in a well known practice. A relatively light com 12 here I60, and con?ned between plunger I81: and the outer end‘ wall of bore I68‘. In the position of the plunger shown in Figure 10, handle I92 is engaged in notch I93, which is of less depth than notch I94, thereby holding plunger I61 in its retracted position. By pulling the plunger outward slightly, so as to disengage handle I92 from notch I63‘, and. turning it so as to position pression spring I50 has its lower end bearing handle I62 in notch I194, the plunger I81 is pro against spring mounting head I41 and has its upper end bearing against another spring mount 10 jected, upon release of handle IP92, so as to engage through the opening de?ned either-by the: lower ing head I5I. The latter head is pivoted on a stud I52 secured in the lower end of an arm I53, the upper end of which is ?xed on a pin I54 rock cooperating recesses" I85a, I'86a or by the upper ablyv mounted. in a bushing I55 extending through arm I36 above and at right angles to socket element I31. A two arm. pawl I51 is Whether the links‘ I'IIt, L82 are in their‘ upper cooperating recesses I85; I66’, depending upon positions (Figure 9) or intheir lower positions. These locking functions will be later‘ described. The links Ill and I82 are adapted to be pulled ?xedly secured by a set screw I58 on pin I54 at downwardly by actuating means which is typical‘ the outer face of arm I36- Pawl I51 is disposed ly illustrated by a foot treadle, although other in the vertical. plane of two arms I59 and. I60 loosely mounted on a bushing I6I extending 20 actuating means may be» employed if desired. This foot treadle is connected to the lower end about reduced inner end portion I62 of shaft of an operating rod I91 which has a laterally I33, the latter, being‘ of. reduced diameter at the bent upper end I91.’ adapted for alternative piv portion thereof passing through the inner race otal connection either in a hole I98 in the lower of the ball bearing I35, and there being a re taining ring I63 disposed about. shaft I33, be 25 end of link I1I, or in a hole I96a in. the lower end of link I02; When the operating‘ rod I91‘ is tween bushing IBI and the adjacent bearing coupled to hole I98- of‘ link IN the control mecha~ I35. A snap retainer ring I64‘, seated in a cor nism is thereby rendered operative to cause. a responding groove in yoke I28, in which the single stroke or one-cycle operation of the press outer bearing I35 is disposed, contacts the outer when the foot treadle is depressed. When the race of this latter: bearing and restrains it against operating rod: I01 is coupled to hole I98a of link endwise movement. Arm I3I contacts the inner I32‘ the control mechanism is thereby rendered race of the outer bearing I35, and, in cooperation operative to cause continuous repeating operation with shoulder I66 of shaft I33, restrains this of. the press when the. foot? treadle is depressed. shaft against endwise movement. Ring I63 and Referring now to‘ the locking functions of the shoulder I61‘ of shaft I33 cooperate with the recesses I85:.-—I‘05' and I85a'—t86a, when the lock inner bearing I35 to restrain these parts against ing plunger I81 is projected through the recesses relative axial movement, the arms I59 and I60 I85a and‘ ISIia', with both links HI and I62 in being con?ned between ring I63 and arm I36 their raised clutch. releasing positions, the clutch and. restrained thereby against relative movement axially of shaft I33. Arm I60 extends in a di 40 is thereby locked out so that the press cannot have any type of operation. Conversely, when rection forwardly of the press frame f, or to the the locking plunger I81‘ is. projected through the right as viewed in Figure 9, and arm I59 extends rearwardly, or to the left, as viewed in Figure 9. The forward end of arm I60 is pivoted at I10 to the upper end of a link I1I vertically movable I through an opening I12 in web I44 of bracket I30. Arm I59 is‘ pivoted, at its rearward end, at I13, to a link I14, this link being vertically mov able through an opening I15 in top web I16 of bracket I30. Link I14: is: pivoted adjacent its ; lower end, at I18‘, to. the rearward end of. a trans verse link I19 pivoted at its iorwardend, at I80, to link I1I. The arms I59 and I60 and the links HI and I14 and I19 together constitute a link age system substantially‘ in the form of a paral- .: lelogram. A link I02 is pivoted at its upper end, other recesses I85, I35, with both links HI and I82 in their lower clutch engaging positions, the clutch is held in engagement so that the crank shaft Hi can be manually rotated; or inched around for die setting purposes. “1 Link I'14'is pivoted at its upper end to a power actuated trip rod I99 which in turn is pivoted at its" upper end (Figure l). at 2.00 to av trip. lever 2011 pivoted at. a point intermediate its‘ ends on a. stud 202 secured in. a boss 203 secured to the front of the press frame j. A counterweight 205' is suitably mounted on trip lever" 2'0I for wardly of pivot. stud 202,. and urges the rearward arm 206 thereof upward into the path of a trip at I83, to link I19 adjacent link HI, and depends roll'er 201' mounted on a pivot. bolt adapted to be from link I19 in position adjacent and parallel with link HI, and extends with the latter through opening I12. Link I1I is provided, at its lower portion and in its rearward edge, with two semi-circular recesses I85 and I85a, and link I82 is provided, in its forward edge, with two semi-circular recesses I86? and I86a. In the po sition of the parts shown in Figure 9, recesses , screwed. into any one, selectively, of a series of I65a and I86a are in register and aligned with a plunger I81. slidable. in‘ a. bore I88 in a boss I89 I of bracket I30; Plunger I81 is provided with a stem I90; extending outward therefrom through a reduced bore I9.I. opening into‘ bore I88. The outer portion of stem I90‘ is bent at right angles to provide a handle and. stop element I62 for engagement in either one of two notches I93 and I94‘ in the outer end of boss I89.. A compression coil spring I95 is disposed. about. stem I60, within tapped‘ bores 208 in the hub 209' of a brake drum 2I01 keyed on crank shaft II‘ of the press; It will be clear from Figure 9 that arm I36 and compression spring I410 together constitute a toggle, and‘ that the compression spring I48 is an over-center spring. The pressure of this over center spring is dominant over the pressure of the toggle strut‘ springs GI’ and is capable of disengaging the clutch in opposition to the action of said latter springs. In Figure 9 the parts are shown in the positions which they occupy when arm 206 of trip lever 20I is in its depressed position shown. in Figure 1. At that time one arm- of pawl I51 is disposed in contact with and beneath a shoulder I60a of arm I60; Arm I36 is then held by compression spring I43 in its position shown in Figure 9, and shaft I133 has 13. 2,408,801 14 been turned into such position that aim I3I'is disposed as shown in‘Figure 1. The brake lever . and‘IBZ are then disposed as shown in Figure 9, corresponding to a brake-engaging, clutch-re of. the clutch mechanism is then in its position in which the braking mechanism is set and the leasing relation of the mechanism. If desired, the links "I and I82 may be locked in this posi tion by‘means of the plunger I81, thus locking arm I36 ‘in itsbrake setting and declut'ching po sition so asto guard against any possibility of accidental operation of the press, as when mak members of the clutch'are declutched. ' In the brake setting and declutching operation the shaft III overrunsto a certain extent, as does the crank shaft I I of the press, ‘the overrun of the latter shaft being sufficient to move the trip roller 201 I in‘g adjustments, changing die blocks, or" in any clear of trip lever 206. When it is desired to again 10 other case where it is desirable to guard‘against operate the press, the treadle is depressed, mov unwantedoperation of the press: a . ing linkI1I of Figure 9 downward. That swings Movement ‘of brake lever II6 in the brake en arm I60 ‘downward about shaft I33 and, since gaging direction of movement is not limited but shoulder I60a of arm _I60>is in contact with one continues during the follow-up'motion of the arm of pawl I51 (this pawl annalso riding on 15 controllable brake member 80. Movement "of the peripheries of the hub portions of the~arms said lever in the opposite direction may be lim I60 and I59) arm I36 is swung toward ‘the left, ited by the associated means for shifting brake as viewed in Figure 9, turning the shaft-I33 in member 80 after the brake has been released, as clockwise direction. When thepivot bolt’ I48 is will ‘be readily understood. The over-center in dead center position relative to pivot stud M2 20 spring I48 assures full'throw of said brake lever and shaft I33, thearm I3I is in the positio'n‘indi-v " in either direction and retains it in- either-its cated by the line .r-x‘of Figure 1. _-When' bolt brake releasing » and ; clutch applying position or I40 passes beyond dead center position, the com- ‘ in its brake setting and clutchtrele'asing position, pression spring I 48 expands, turning shaft 133 while also providing ‘yielding operating means a further distance ‘in clockwise direction and 25 accommodating and compensating for wear of moving arm I3I tothe-position"indicated bythe line y—’y of Figure-1.11 The brake leve'r'is'then in its clutch‘ engaging and brake releasing posi tion,~thus setting thegclutch and releasing the brake. During swinging movement of‘arm I36 parts in ya manner to assure proper and reliable - operation of the brake-clutch mechanism. ‘ The control means, comprising the toggle and spring arrangement shown and described, is well suited 30 for use with the brake-clutch mechanism of my “from its position shown in Figure 9' to its oppo site- position, the secondary compression spring I50 imparts turning movement to pawl I51 in clockwise direction, through arm I53 and pin I 54, spring I50 also'being an over-center spring similarly to spring I48. -As a result of this turn ing movement of pawl I51, combined with the swinging movement of arm I36, when this latter arm reaches its opposite position to that shown in Figure 9, the other arm’ of pawl I51 is disposed 40 invention but, in its broader aspects, may be used to advantage with other brake or clutch mechanisms controlled by a lever having limited throw in opposite directions, or to analogous mechanisms. ’ l The socket element I31'of‘arm I36 is intended for the reception of a suitable rod or handle 2I5, beneath a shoulder I 58a of arm I59 and in con- , indicated in' dot and dash lines in Figure 9, in sertibleythrough either one of twovopenings 2I6 in bracket I 30,? v'By means of handle 2 I 5, arm I 36 may be quickly swung into either of its two posi tact with the peripheral hub portion of . this tions for manually’engaging the clutch or re arm and of arm I60, as before; It will be ap parentthat when arm I36 has been moved into leasing‘ thev clutch. Suf?cient leverage can be exerted through this manual handle to release ‘its opposite position to that shown inv Figure 9, the clutch even though the clutch‘ surfaces have arm I50 is in raised position, with pawl I51'en ‘become tightly wedged together by'the self-en ergizing action of the toggle struts 60. This gagedbeneathshoulder I59a, and arm I60 is in its lowered position, with pawl I51 out of contact manual control is often advantageous for effect with shoulder I60a thereof. In that position of ing slight rotation of crank shaft I I of the press, the parts, link "I is in its lowered position, and 50 or for inching the press, when making adjust recess I85 thereof isin register with recess I 86. ments, etc. Still further, the mechanism can be of link I82, both of these links being lowered into readily converted solely to manual control for such position that the opening de?ned by the re normal running byremov-ing the tripping roller cesses I85 and I86 is aligned with plunger I81; , 201 and thenoperating the clutch in each direc If continuous operation of the, press is desired 55 tion by the manual handle 2 I 5. ' at this time, the handle I92 of plunger I81 is ' Preferably, I provide a drag brake for retard disengaged from notch I93 and placed in notch ing any objectionable overrunning of the press To that end, a ?exible brake I94, permitting the plunger I 81 to be projected , ‘ crank. shaft I I. through the'recesses I85 and 186, thus locking band 220, provided with asuitable brake lining the links HI and I82 against upward movement 60 22I, is passed about brake drum 2I0, ‘one end of andlocking shaft I33 against turning movement this band 220 being anchored, at 222,'to a short so that arm I3I is, held in its brake releasing arm 223 integralwith' a, bell-crank'brake lever and clutch setting position.v The trip roller 201 224.pivoted at its'upper end on stud 202. The may also be removed from the brake drum 2I0. other end of brake band 220 is attached to a If, on the other hand, cyclical operation of the press is desired,‘the plunger I81 remains in its retracted position. Under _ such conditions, the link 225 passing through a ?ared. opening 226 in lever224', the outer or forward endportion of this link being'threaded for reception of adjusta treadle is depressed, causing'movement of-arm ing nuts 221 and 228 screwing thereon, nut 228 I36 into its clutch engaging and brake releasing having a rounded bearing surface contacting position, after which the treadle maybe re~ 70 lever 220.v " At its lower end lever 224 is provided leased. The cam shaft II then turns through a with‘a' boss 229 through which is threaded an complete revolution, at the. end of which trip adjusting screw 230 on which is threaded a jam ‘roller 201 contacts arm .206 of trip lever>20‘I-,"forc nut 23I. Th'e rearwardend of screw 230 bears ing arm 206 downward and returning arm I36_to against alug 232 of thepress frame 7‘. It will its-position shown iniFigu'r‘e 9."~'The links I" 75 be apparent-that 'thisscrew 230' is a pressure ~, 2,408,301 15' screw effective for adjusting the‘tension of brake band 220, and that the brake band and its lining 22I cooperate with brake drum 2H)‘ for exerting 16' said rotatable brake member. in said one direc tion and in said opposite direction. 5. In a clutch, a driving member, a rotatable a braking eiiect upon crank shaft H so as to driven member, braking means therefor compris of one such modi?cation or alternative construc roller 201.. The same mechanism can be used by clutched to and declutched from saididriven mem ber responsive‘ to axial shifting of said rotatable brake member in said one direction and in said opposite direction, and means for enabling said braking means to impose braking retardation on said driven member through said self-energizing mechanism. reversing the attachment of the parts, as to the links HI and I'M, making suitable provision for driven member, braking means therefor compris ing a rotatable axially shiftable brake member prevent objectionable overrun thereof while not and a cooperating non-rotatable brake member objectionably interfering with rotation of the axially shiftable into brake setting position and crank shaft in the normal operation of the press. brake releasing position relative to‘said- rotatable As above indicated, it will be understood that brake member, means whereby said rotatable changes in construction and arrangement of parts of my invention may be resorted to with 10 brake member is shifted axially in one di rection responsive to release of said‘ braking out departing from the ?eld and scope thereof, means. and in the, opposite direction respon and I intend to include all such variations,‘ as fall sive to setting of said braking means, sup— within the scope of the appended claims in this plementary means comprising self-energizing application,v in which the preferred form only of my invention has been disclosed. As illustrative “ mechanism whereby said drive member is tion, the above described operating relation might be reversed so that the spring I48 would be released by manual tripping transmitted from the foot treadle and would be compressed by ~_ power tripping transmitted from the tripping an increase of throw of the mechanism actuated by'the tripping roller 261, and also reversing the relative throw of the’ double-acting ball cam mechanism 91, N30, I58, Ill-I I5, I claim: 1. In clutch mechanism, the combination of av driving member, a rotatable driven member, a self-energizing axially shiftable clutch spring biased to engage by shifting movement in one 6. In a clutch, a driving member, a rotatable ing a non-rotatable brake member axially shift able into braking position and brake releasing position,and means actuatedby axial movement of said brake member whereby releasing and set ting of said braking means clutches and de clutches said drive member to and from‘ said driven member, and also releases and applies braking force to and from said driven member, 7. In a clutch, a driving member, a. rotatable driven member, braking means for holding said comprising a servo action axially shiftable brake 35 driven member against rotation comprising a non-rotatable brake member axially shiftable in spring-biased to engage by shifting movement in one direction into braking position and in the op the other direction, the spring biasing force of posite direction into releasing position, and means said brake being operative tov overcome the spring direction, and control apparatus for said clutch biasing force of said clutch. 2. In clutch mechanism, the combination of a drivingmember, a rotatable driven member, a self-energizing axially shiftable clutch, spring means operative to axially shift said clutch into engagement in one direction, control apparatus for said clutch comprising a servo action axially ‘ shiftable brake, and spring means operative to axially shift said brake into engagement in a di rection opposite to the direction of engagement of said clutch, said last named spring means be ing dominant over said ?rst named spring means. l.‘ 3. In a clutch, a driving member, a rotatable driven member, braking means for applying a braking force to said driven member comprising a non-rotatable brake member axially shiftable into brake setting position and brake releasing . actuated by axial movement of said brake mem— ber whereby releasing and setting of said brak ing means clutches and declutches said drive member to and from said driven member. 8. In a clutch, a driving member, a rotatable driven member, braking means for applying brak~ ing force to said driven member comprising a non-rotatable brake member axially shiftable in one direction into braking position and in the opposite direction into releasing position, and means whereby releasing and setting of said brak ing means clutches and declutches said drive member to and from said driven member, said last means comprising a clutch member movable axially in the same direction with the shifting movement of said brake member. 9. In a clutch, a driving member, a rotatable driven member, braking means for holding said driven member against rotation comprising a non-rotatable braking member axially shiftable in one direction into braking position and in the opposite direction into releasing position, means 60 4, In a clutch, a driving member, a rotatable actuated by axial movement of said brake mem driven member, braking means for stopping and ber whereby release and setting of said braking holding said driven member against rotation means initiates clutching and declutching of comprising an axially shiftable rotatable brake said drive member to and from said. driven mem member and a cooperating non-rotatable brake ber, and biasing spring means operative to cause member axially shiftable into brakev setting the clutching and declutching operations initiated position and brake releasing, position relative to by said brake member to be completed. said rotatable brake. member, means whereby 10. In a clutch, a driving member, a rotatable driven member, braking means for stopping said said rotatable brake member is shifted axially in one direction responsive to release of said brak 70 driven member and holding it against rotation, said braking means comprising‘ a non-rotatable ing means and in they opposite direction respon braking member axially shiftable in one direction sive to setting of said braking means, and self into braking position and in the opposite direc energizing clutch means whereby said drive tion into releasing position, means actuated'by member is clutched to and declutched from said driven member responsive to axial shifting of 75 axial movement of said brake member whereby position, and means whereby releasing and set ting of said braking means clutches and de clutches said drive member to and from said driven member when the latter is at standstill. 2,408,801 17 .tingand releasing of said braking means. ~ 15., Ina clutch,‘ a rotatable shaft, a driving clutch member, a hub ?xed on said shaft, a driven only upon completion of the clutching operation and said declutching operation being completed clutch membermounted on said hub for relative .only' upon setting of said braking means. 7 ,18 clutching position in the brakereleasing opera tion, and self-energizing mechanism whereby said clutch member is movedinto clutching posi tion and declutching position responsive to set release andsetting or said braking means initiates clutching, and declutching of said drive member to vand from said driven member, andsupplemen tary means whereby the clutching and declutch :ingoperations initiated by said brake member are completed, said braking means beingv released axial ‘and turning movement, self-energizing 11. ,In a clutch, a driving member, a rotatable .10 means connecting said driven clutch member and driven member, braking, means for holding said driven member against rotation comprising a said‘ hub comprising drive transmittingstruts, an abutment member ?xed on saidyhub, a brake non-rotatablebrake member axially shiftable in membenmounted on said hub-for“ relative axial one direction into braking position and in'the f and turning movementvbetween- said abutment opposite direction into releasing position, means ,5‘ member andsaid drivenclutch» member in end actuated-by axial movement oi said brake mem berpwhereby release and setting ofpsaid braking meansinitiates clutching and declutching of said bie brake~_member3axially shiftable into brakeset driyemember to and fromsaid driven member, to. said’, ?rst brake member, said second brake and supplementary, means comprising servo mechanism receiving rotative' energy from said member moving said ?rst brake member axially andfthereby moving said driven clutch member rotatable driven member and arranged whereby the declutching operations initiated by ,said setting operation, andsaid self-energizing means brake member are assisted by servo energy. ting position and brake releasing position relative axially into declutching position during the brake moving said driven clutch member axially into - ~ 12. In combination,» a rotatable driving, mem ber, a rotatable drivenvmemiber, a clutch for cou pling said .wise abutmentiwiththe, latter, and a non-rotata ‘25 clutching position and thereby imparting similar l . ' ' axial movement to said ?rst brake member dur- ‘ members ' together, self-energizing ing the-brake releasing operation. ' I V _ 7 mechanism for actuating said clutch, and brake .16. In anclutch, a rotatable'shaft, a‘ driving means for controlling said self-energizing mech clutch member, ahub ?xed on said shaft,.a anism comprising an axially shiftable rotatable 30 drivenclutch member mounted on said hub for brake member and a co-acting axially shiftable relative iaxial , and turning. movement“v self -ener gizing means ,connectingsaid driven clutch mem non-rotatable brake member, said brake means being-operative to apply¢braking retardation to her and said hub comprising drive transmitting said rotatable driven member through said ax struts; and ‘oppositely related’ yielding energy ially shiftable non-rotatable brake member when 35 storing struts, an abutment member ?xed on. said hub, a brake member mounted on said hub 'for' said 1-3;clutch In' combination, is released. a'rotatable ' ' ' driving mem~ , her, a rotatable driven member, a clutch there between, self-energizing mechanism ‘for, actuat ing'rsaid ‘clutch, said self-energizing mechanism comprising two‘ cooperating relativelyv rotatable self-energizing members adapted to have rela relative axial and turning movement between saidabutment member and said driven. clutch member in endwise abutment with the latter, said I 40 brake member'andsaid abutment member hav '' ing cooperating cam ,meanswhereby} said brake memberl-ismoved axially in .a direction; toward tive ‘axial, movement occurtherebetween. when and-in a directionI away irom said driven clutch one of; said self-energizing members is rotated member responsive to turning of said brake mem relatively tothe other, means for driving oneiof 45 ber in. one direction and in the opposite direc- ' said self-energizing members from said rotary tion,» and anon-rotatablebréxke member axially driven member, braking means for retarding ro shiftable into brake setting position and brake re tation of the ‘other self-energizing member, to leasingyposition relative to said ?rst brake mem cause'relative axial movement between said vself ' her, said second brakemember moving said ?rst energizing, members, said braking means com 50 brake member axially and in cooperation with said self-energizing means causing turning of prising'an axially shiftable rotatablebrake mem ber andv a co-acting manually controlled axially said drivenvclut‘ch member and said ?rst brake member in‘ said one direction thereby moving shiftable non-rotatable brake member, means for said driven clutch member axially into declutch transmitting said relative axial movement to said ~ clutch for controlling the latter, and means en 55 ing position during the brake setting operation, said yielding struts being compressed by over abling said braking means to stop said driven running of, said shaft after declutching and set member and to hold it against rotationaiter re lease of said clutch. . ‘ ' ting of .thebraking means,’ said self-energizing -14. In a clutch. a driving member, a rotatable ‘ _ means acting. to turnsaid driven clutch member driven member, braking means for stopping said 60 and said ?rst brakemember in said opposite di driven member and holding it against rotation, said braking means comprising anv axially shift able rotatable brake member and a cooperating rection andto thereby ’move said driven clutch into clutching position during the brake releas ing operation. ' non-rotatable brake member axially shiftable _17_.. In‘ a clutch-Ma rotatable shaft, a ems into brake setting position and brake‘releasing 65. driving cone clutch member having an outwardly ' position relative to said rotatable brakemember, ' converging clutching surface,- a hub ?xed on said shaft, adriven male cone clutch member mount the latter member being axially movable by said non-rotatable member in the movement thereof in brake setting direction, clutch means compris ing a shiftable clutch member for clutching and, declutchingsaiddriving member to and from said driven member, said clutch member shifting ax ially directly with and in the same direotionas 7 said rotatable brake member into declutching position in the brake setting operation andninto 15, ed on said hubfor relative axial and turning movementcooperating with said female member, self-energizing, means‘connecting said hubvan'd said male member comprising drivevtransmitting struts, an abutmentmember ?xedon saidv hub outward from said male member, a‘male cone brake- member mounted, on said hub for relative axialla'nd turning movement between said abut 2,408,301 19 20 able relative to the other brake member into ment member and said male clutch member, said brake setting position and brake releasing posi brake member having an outwardly converging tion relative thereto and said other brake member braking surface, a‘ cooperating non-rotatable fe being axially shiftable with said one brake mem male brake member axially shiftable into brake setting position and brake releasing position rel her in continued movement of the latter in brake setting direction and in brake releasing direction, ative to said male brake member, and means whereby setting said braking means shifts said male clutch member axially into de-clutching po sition, said self-energizing means moving said and means whereby setting and release of said braking means shiftsv one of said clutch members into declutching position and clutching position, 10 and applies braking force to the driven clutch male clutch member axially outward into clutch ing position in the brake releasing operation. member in said declutching position. 231. In a clutch, a female’ cone clutch member, a cooperating male cone clutch member axially shiftable into clutching position and declutching clutching position and clutching position, a pair 15 position, an axially shiftable male cone brake member disposed in endwise abutting relation to of axially shiftable cooperating cone brake mem said male clutch member, a cooperating female bers operative to apply braking‘ force to said cone brake member axially shiftable into brake driven clutch member, one of said brake members setting position and brake releasing position rel being axially shiftable relative to the other into brake setting position and brake releasing posi 20 ative to said male brake member, the latter being axially shiftable with said female brake member tion, and means whereby setting and releasing of in continued movement thereof in brake setting said braking means shifts said one clutch mem direction and brake releasing direction, continued ber axially into declutching position and into movement of said female brake memberin brake clutching position. 19. In a clutch, a female cone clutch member 25 setting ‘direction shifting said male» cone clutch member axially into declutching position and having an outwardly converging clutching sur applying braking retardation to said male clutch face, a cooperating male cone clutch member ax member for stopping rotation thereof, and sup ially shiftable into clutching position and ‘de plementary means whereby release of said brak clutching position, an axially shiftabiemale cone brake member disposed outward of said male 30 ing means shifts said male clutch member axially into clutching position. clutch member and having an outwardly con 24. Incombination, clutch means, brake means verging clutching surface, a cooperating female governing said clutch means comprising a rotat cone brake member axially shiftable into brake able axially shiftable brake member and a co setting position and brake releasing position rel ative to said male brake member, and means‘ 35 operating non-rotatable axially shiftable brake member, control mechanism for controlling said whereby setting and release of said braking latter brake vmember comprising a shift lever means shifts said male clutch member axially 18. In a clutch, a pair of driving and driven cone clutch members, one of said members being axially shiftable relative to the other into de with limited movement in opposite directions into into‘ declutching position and clutching position, two operative positions, manual means for’ mov said latter means enabling said brake members to hold said male clutch member against rota tion when said clutch is disengaged. ing said lever in one direction a distance less than its full throw, power means responsivetothe en gagement of said clutch means for moving said lever in the opposite direction a distance less than its full throw, andv yielding means for complet ing the throw of said lever in either direction. 25. In combination, clutch means, brake means governing said clutch means comprising a rotat able axially shiftable brake member and a co . 20.. In a clutch, a female cone clutch member, a cooperating male cone clutch member axially shiftable into clutching position and declutch ing position, an axially shiftable male cone brake member, a cooperating female cone brake mem ber axially shiftable into brake setting position and brake releasing positionrrelative to said male brake member,’ the clutching surfaces of said clutch members and the braking surfaces of‘ said brake members being similarly inclined, and means whereby setting and release of said brak operating non-rotatable axially shiftable brake member for holding it against rotation in said two operative positions, a rockably mounted shaft, an operating arm secured on said- shaft member, control mechanism for controlling said latter brake member comprising a shift lever with. limited movement in opposite directions into two operative positions, a rockably mounted arm con ing means shifts said male clutch member axially nected to said lever, toggle means connected to into declutching position and clutching position, and applies braking retardation to said male 55 said arm, and mechanism for turning said arm in 7 either direction beyond dead center position of clutch member when in declutching position. said toggle means comprising power driven means 21. In a clutch, a pair of cooperating driving responsive to said clutch means for effecting the ‘ and driven cone clutch members, a pair of coop turningin one direction, said toggle means com erating cone brake members one axially shift able relative to the other into brake setting po so prising an over center spring effective for com pleting the throw of‘ said arm and said lever in sition and brake releasing position relative there either direction. to and said other brake member being axially 26-. In combination, clutch means, brake means shiftable with said one brake member in contin governing said clutch means comprising a rotat ued movement of the latter in brake setting di rection and in brake releasing direction, and 65 able axially shiftable brake member and a co operating non-rotatable axially shiftable brake means whereby setting and release of said brak member, control mechanism for controlling said ing means shifts one of said clutch members into latter brake‘ member comprising a shift lever with declutching position and clutching position, and limited movement in opposite directions into also applies braking force to the driven. clutch declutching position. _ 22. In a clutch, a pair of cooperating driving having operating connection to said lever, toggle and driven cone clutch members, a pair of co operating cone brake members, one of said brake means connected to said shaft, and manual means and power means responsive to said clutch 75 means for turning saidshaft in either direction members being non-rotatable and axially shift 21 2,408,301 beyond dead center position of said toggle means, 22 responsive to the engagement of said clutch , the latter comprising an over center spring ef fective for completing the throw of said arm and said lever in either direction. 27. In clutch mechanism for punch presses and the like, the combination of a driven shaft, a means for» imparting endwise movement to the other of said side links, and means cooperating with said arms and with said shaft for rocking the latter in opposite directions responsive to clutch controlling the rotation of said shaft, brake 31. In combination, clutch means, brake means governing said clutch means comprising a rotat means governing said clutch comprising a non-' endwise movement of said side links. ' rotatable axially shiftable brake member, a foot able axially shiftable brake member, and a co treadle for shifting said brake member in one 10 operating non-rotatable axially shiftable brake direction for initiating the engagement of said member, control mechanism for controlling said latter brake member comprising a rockably shaft for shifting said brake member in the oppo mounted shaft, two arms loosely mounted about site direction for effecting the disengagement of said shaft projecting oppositely therefrom, an said clutch, and automatic control mechanism 15 end link substantially parallel with said arms, clutch, power means actuated by said driven responsive to said foot treadle and to said power means for controlling the shifting of said brake member, said control mechanism comprising a ?rst actuating member towhich said foot treadle two side links. connecting the outer ends of said arms to said end link forming therewith a paral- , lelogram, power means responsive to said clutch means and manual means for imparting endwise is adapted to be connected for producing single 20 movement to either of said side links, means co stroke operation of the punch'press, and a sec operating with said arms and with said shaft for ond actuating member to which said foot treadle rocking the latter in opposite directions respon is adapted to be connected for producing repeat sive to endwise movement of said side links, and ing operation of the punch press. means for locking said parallelogram against 28. In combination, clutch means, brake means 25 movement in either position of said shaft. governing said clutch means comprising a rotat able axially shiftable brake member and ‘a co operating non-rotatable axially shiftable’ brake member, control mechanism for controlling said ' 32. In combination, clutch means, brake means governing said clutch means comprising a non-, rotatable axially shiftable brake member, con trol mechanism for controlling said brake mem latter brake member comprising a rockably 30 ber comprising a rockably mounted shaft, toggle mounted shaft, toggle means comprising an oper ‘ means comprising an operating arm secured at ating arm secured at one end on said shaft and an over center compression spring connected to one end on said shaft and an over center com pression' spring connected to the other end of said arm, two arms loosely mounted about said shaft the other end of said arm, linkage and pawl means for turning said shaft in either direction 35 projecting oppositely therefrom, an end link be beyond dead center position of said toggle means, low said shaft substantially parallel with said said spring completing throw of said shaft in arms, two side links connecting the outer ends of either direction, manual means for actuating said said loosely mounted arms and said end link linkage and pawl means in one direction, and forming therewith a parallelogram, a pawl piv power means responsive to said clutch means for 40 oted on said operating arm, said pawl and said actuating said linkage and paw] means in the loosely mounted arms having cooperating ele other direction. ments for turning said shaft beyond dead center 29. In combination, clutch means, brake means position of said toggle means in one direction governing said clutch means comprising a rotat when one of said side links is moved downward able axially shiftable brake member and a 00 and in the other direction when the other side operating non-rotatable axially shiftable brake member, control mechanism for controlling said latter brake member comprising a rockably mounted shaft, togglemeans comprising an oper link is moved downward, an over center compres sion spring for positioning said pawl in cooperat ing relation to the respective loosely mounted arms responsive to movement of said operating ating arm secured at one end on said shaft and 50 arm from one position to the other, manual an over center compression spring connected to means for actuating one of said side links, and the other end of said arm, means comprising a power means responsive to the engagement of linkage parallelogram distortable from a ?rst said clutch means for actuating the other of said position to a second position for turning said side links. a shaft in either direction beyond dead center po 55 33. In combination, clutch means, brake means sition of said toggle means, manual means for governing said clutch means comprising a non actuating said parallelogram in one direction, rotatable axially shiftable brake member, control power means responsive to said clutch means for mechanism for controlling said brake member actuating said parallelogram in the opposite di comprising a shift lever with limited movement rection, and means for locking said linkage par 60 in opposite directions into two operative posi allelogram against distortion in either of its said tions, an operating shaft connected to said lever, positions. an arm secured to said shaft, an over center 30. In combination, clutch means, brake means spring connected to said arm effective for com governing said clutch means comprising a rotat pleting throw thereof in either direction, means able axially shiftable brake member and a co 65 for turning said arm in one direction beyond operating non-rotatable axially shiftable brake dead center position of said spring, and power member, control mechanism for controlling said driven means responsive to the engagement of latter brake member comprising a‘ rockably said clutch means for turning said arm in the mounted shaft, two arms loosely mounted about other direction beyond dead center position of said shaft projecting oppositely therefrom, an 70 said spring, said arm having a socket element end link substantially parallel with said arms, disposed substantially transversely of said shaft two side links connecting the outer ends of said - for reception of a handle for turning said arm arms to said end link forming therewith a paral manually in either direction. lelogram, manual means for imparting endwise movement to one of said side links, power means 75.. CLARENCE M. EASON.