US793920A - Positive-lock clutch. - Google Patents

Description

No. 793,920. PATENTED JULY 4, 1905. L. J. GREGELIUS.

POSITIVE LOCK CLUTCH.

APPLIOATION FILED JAN. 4, 1904.

w if 2 SHEETS-bHLEEE l.

PATENTED JULY 4:, 1905.

2 SHEETS-SHEET 2.

L. J. GREOELIUS.

POSITIVE LOCK CLUTCH.

APPLICATION FILED JAN. 4, 1904.

Ri a/4 H 4 one of thelock-blocks.

Illll'o. T953920.

Patented Juiy t, 1905.

. ririicis.

frOlUlS (l. (JRIECELIUS, OF ST. LOUlS, iiffleltl OURi, AStllt-illltllt TO FREDERICK J. Fi llNl lii IAN, ()F ST. LOUIS, MlSrlUUh-l.

POSlTlWIE-LOwll t mhltl f'fil'l.

SPECIFICATION forming part of Letters Patent No. 798,920, dated July 4;, 1905.

Application filed January 4, 1994;. Serial No. 187,711.

To rt/IZ 0/1/0112 it 712,0, concern.-

Be it known that l, Louis J. Cn'nonnies, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvc-nnents in Positive-Lock Clutches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

I hily invention relates to a positive lock ciatch which can be started at a gradual speed and will hold any load up to its breaking strain without readjustment.

This clutch can be made as a single unit or split to permit of its being placed readily at any desired point on a shaft when used on powertransmitting devices, such as pulleys or driving-wheels. The clutch is also appli cable to the meeting ends of two shafts to com- 2 municate motion from one to the other.

By my invention I dispense with the commonly-known toggle-levers and costly adjustment of parts, my object being, aside from the positive hold, also the cheapening of cost of 2 5 constri'lction to enable general adoption.

M y invention consistsin features of novelty hereinafter fully described, and pointed out in the claims.

Figure l is a longitudinal section of my clutch unlocked. Fig. 11 is a cross-section taken on line H .li, Fig. l, with the parts shown in elevation looking in the direction of the arrow on said line. Fig. lllll is a crosssection taken on line .llli ill, Fig. i. Fig. llV is a perspective view of oneof the oscillating lock-blocks arranged for engagement with the cam-wln-iel of the clutch. Fig. V is a perspective view of one of the regulating-wedges of the clutch. Fig. VI is a perspective view of Fig. Vll isa perspective view of one of the (merating-wedges.

Fig. Vll l: is a longitudinal section of the clutch, sl'iowing the parts in the position assumed when the clutch is locked. Fig. IX is 4-5 a diagrannnatical view of a. portion 01 the working face of the cam-wheel and the ends of the oscillating locl-z-blocks that operate in connection therewith.

1 designates a shaft on which my clutch is 5 shown mounted.

2 is a cam-wheel of split form, 3e Fig. 111,) having a hub 3 that is loosely mounted on the shaft 1 and which may carry a pulley 4, as shown in Figs. [and ll, or other power-transmitting devices to travel with the cain-wheel in its rotation. The pulleys is of split form, so that it may be readily applied to the hub of the cam-wheel after the sections of said wheel have been assembled on a shaft. The working face of the 021111--\\ll06l 2 is furnished with a plurality of crowns or high points 5 and a plurality of dips or low points 6, located at intervals and alternating, as seen in Figs,

i, ll, VIII, and IX. The function of these crowns and dips will hereinafter appear. 5

7 designates a sectional clutch-frame, as

seen in Figs. l, ill, and Vlll, which is held from rotation on the shaft 1 by any suitable means, such as a key (Shown on Fig. ill.) ihefra1'ne is chambered interiorly, and itcoin- 7 prises an end 9 and side arms 10. In the end 9 of the frame are apertures 11, and in the arms 10 are apertures 12.

13 represents webs extending longitudinally and transversely within the frame 7 and 7 5 spaced apart from the arms 10, as seen in Figs.

I, Hi, and VIII.

14c designates oscillating lock-blocks, preferably two in number, reciprocatingly posi tioned between the frame-arms 10 and webs 1,3. The forward ends of these oscillating blocks oppose the working face of the camwhecl 2, and in said forward ends are seated :mtifriction-rollers 15. The oscillating lockblocks 14: are recessed, as seen in .liigs. l and 5 ill, and seated therein are expansion-springs 16, that are preferably ol considerable strength. 17 represents lock blocks located at the rear of the oscillating lock-blocks 14; and between which and said oscillating lock- 9 blocks the springs in are seated. Each of these locleblocks is provided with a diagonal groove l8. (See Figs. .l and Vi.)

19 represents regulal ing-wedges having in clined working I ees .50, (see Figs. l and V,) that operate within the grooves of the lockblocks 17.

23 designates reciprocating operatingwedges provided with sligl'itlyinclined working faces Q-zi and positioned between the hubof I00 the frame 7, on which they ride,and the regulating-wedges 19. The working faces 24 of these operating-wedges bear against the working edges 22 of the regulating-wedges 19. The op crating-wedges extend through the apertures 11 in the frame end 9, and these wedges taper toward a point in an upward direction, as seen in Figs. 1, VII, and VIII. Faeh operatingwedge is provided with a sprin 26 at its small end 25. These springs 26 are of less resistance than the springs 16 located between the oscillating lock-blocks 1 1 and lock-blocks 17.

28 designates a shift -collar loosely posi tioned on the shaft 1. (See Figs. I and VIII.) This collar has a flange 29, that is apertured to receive the operating-wedge ends 2-5,which operate loosely therein. This flange serves as hearing for the springs 26, the opposite ends of which bear against the nuts 27. In the shift-collar 28 is an annular groove 29, that receives the pins 30 of a shift-lever 31, having one of its ends pivoted at 32 to a suitable support 33, that may be of any desirable form.

In the practical use of my clutch the operation is as follows: The clutch-frame '7 being fixed to the shaft rotates therewith when the shaft is in motion. Vhen the clutch is to be thrown into operation, the shift-lever 31 is thrown outwardly in a direction away from the clutch-frame 7, and the shift-collar 28 is thereby moved in a direction corresponding to the movement of the shift-lever. As a consequence the operating-wedgcs 23 are reciprocated forwardly in bearingengagement with the regulating-wedges 19, thereby moving said regulating wedges outwardly, during which movement the working faces 20 of the regulating-wedges travel with contact against the lock-blocks 17 to force them rearwardly in a direction toward the oscillating blocks lat. he result is that pressure is exerted against the springs 16 to carry the oscillating blocks 14 rearwardly toward the cam-wheel Zagainst which the rollers 15 at the rear ends of the oscillating blocks bear. The rollers are therefore moved into engagement with the working face of the cam-wheel 2 so that they will ride on the crowns 5 and into the dips 6 of said camwheel working face. During the rotation of the clutch-frame? the antifriction-rollers 15 when moved inwardly travel in a circuit on the working face of the cam-wheel and alternately ride onto the crowns 5 and into the dips 6, thereby causing a reciprocation of the oscillating blocks let, due to the inward and outward movement imparted to the antifrictionrollers by the cam working face and the springs at the front of the oscillating blocks. During this action one of the antifrictionrollers 15 is traveling on a crown of the cam working face, while the other antifrictionroller is traveling in a dip of said working face, as diagrammatically illustrated in Fig. IX, and this condition is maintained, due to the positions of the rollers on said working face being changed from a crown to a dip in alternation. As the operating-wedges 23 are drawn forwardly resistance to the movement of one of them in alternation will be constantly maintained, due to the corresponding oscillating block antifriction-roller moving onto a crown of the cam-wheel working face, and therefore when the shift-collar 28 is drawn forwardly the spring 26 corresponding to said operating-wedge will be compressed, as seen at the upper side of Fig. VIII. At this time the other antifriction-roller associated with the second oscillating block 1 1 being positioned in a dip of the cam working face no resistance is offered to the forward movement of the corresponding operating-wedge 23, and said operating-wedge remains in a fixed position in so far as longitudinal movement thereof is concerned. Immediately upon the antifriction-roller of the oscillating block first referred to passing into a dip of the cam working face resistance to the movement of the first operating-wedge is eliminated, and the expansion-spring 26 corresponding to said operating-wedge acts to move the operatingwedge forwardly, thereby imparting outward movement to the regulating-wedge 19, by virtue of which the lock-block 17 is carried rearwardly. A further movement outwardly of the shift-collar 28, together with these movements of the parts, is occasioned in alternation with respect to the oscillating blocks 17 and the members by which they are actuated, with the result that the antifriction-rollers 15 are carried gradually into firmer contact with the working face of the cam-wheel 2 until such contact becomes sufliciently intense to lock the antifrietion-rollers against the working face of the cam-wheel, thereby locking the clutch positively. The frame 7 on its 0pposite end has an angular inwardly-extending projection a, which answers as a grip to hold against the smooth face Z) of the cam-wheel, as shown in Figs. I and VIII, thus causing a perfect grip on the periphery of the cam-wheel by the locking device referred to. The operation of releasing the clutch is very simple, as it is only necessary to move the shift-collar 2S rearwardly, thereby throwing its flange into engagement with the forward ends of the operating-wedges 23, when said operatingwedges will be readily thrown inwardly in the frame 7 to relieve the pressure exerted thereby against the regulating-wedges 19. hen this is done, pressure against the lock-blocks 17 is removed and the oscillating blocks 14: and springs interposed between said lockblocks and oscillating blocks are freed from restraint, leaving a free path for the travel of the cam-wheel, as shown in Fig. I.

I have shown and described my clutch as having a pulley arranged in connection therewith in Fig. I; but it is obvious that the ends of two shafts may be operatively united by it for the transmission of power from one to the other, where the cam-wheel 9 is located upon the end of one shaft and the clutch-frame 7 and the parts associated therewith are mounted upon the end of the other shafts, as shown in .lfig. Villl.

f claim as my invcntion-- l. A clutch comprising a cam having a working face, locking means arranged to be gradu- I ally lIlOVGtl into contact w1th said cam working face, and wedge mechanism for holding said locking means positively to said cam worle ing face after continued movement thereof, substantially as set forth.

2. A clutch comprisingacam havinga waving working face, locking means arrai'iged to be gradually moved into contact with said cam working face, and wedge mechanism for holding said locking means positively to said cam working face after continued movement thereof, si'ibstantially as set forth.

A clutch com prising a cam having a waving working face, a reciprocating member for gradual movement to said cam working face, and wedge mechanism for shifting said reciprocating member toward said cam working face and finally hoiding said member to said face, substantially as set forth.

a. A clutch comprising a cam having a working face providi-xd with a plurality-of crowns and dips intervening between said crowns, a reciprocating member for gradual movement into contact with said cam working face crowns and into said dips, means for actuating said reciprocating member, and a spring associated with said iast-named means arranged to permit play of a portion thereof during the actof reciprocating said member, substantially as set forth.

in a clutch, a locking device composed of a cam-w heel 2, oscillating blocks 14-, lock-block 1'7, regulating wedge 15), and operatingwedges E23, substantially as described.

in a clutch, the combination with a shaft, of a cam-Wheel on said shaft having a working face provided with a plurality of crowns and dips intervening between said crowns, a pair of f'6Ci})IOCLtOl',Y members for movement to said cam working-face crowns and dips, a member fixed to a shaft in which said reciprocatory members are positioned, and means whereby said reciprocatory members are moved indimendently and alternately toward the working face of said cam, substantially as set forth.

7. in a Gilli/(Ill, the combination with a shaft, of a cam-wheel on said shaft and having an undulatory working face, a phjirality of reciprocatory men'ibers, means fixed to a shaft and carrying said reciprocatory n'iembers, means for moving said members toward the working face of said cam-wheel, and springs intcrposed in said reciprocatory moving means, substantially as set forth.

8. in aclutch, the combination with ashaft, of a cam-wheel on said shaft and having an nndulatory working face, a plm'ality of reciprocatory members, means fixed to a shaft and carigving said rcci 'n'ocatory members, means for exerting pressure against said reciprocatory members, and an operating-wedge for actuating said pressure-exerting means, substantially as set forth.

9. in a clutch, the con'ibination with a shaft, of a cam-wheel on said shaft, and ha ing an umlulatory working face, a plurality of reciprocatory members, means fixed to a shaft and carrying said reciprocatory members, means for exerting pressure against said reci procati'n-y members, an o1ierating-wedge for actuating said pressurc-exerting means, and means associated with said operatirig-wedge for yieldingly resisting movement thereof, substm'itially as set forth.

1.0. if n a clutch, the combination with a shaft, of a cam-wheel on said shaft and having an undulatory working face, a plurality of re ciprocatory members, means fixed to a shaft and carrying said reeiprocatory members, an operating-wedge for actuating said n'essureexerting means, and a spring associated with said o )erating-wedge to be placed under tension during the movement of the operatingwedge, substantially as set forth.

11. in a clutch, the combination of a camwheel having an nndulatory working face, a frame in proximity with said cam-wheel, an oscillating block in said frame for movement toward said cam working face, a lock-block adjacent to said oscillating block to actuate it, and n'ieansifor moving saidlock-block, substantialiy as set forth.

12. in a clutch, the combination of a camwheel having an midulatory working face, a frame in proxin'iity with said canrwheel, an oscillating block in said frame for n'n'n'ement toward said cam working face, a lock-block adiacent to said oscillatii'ig block to actuate it, a spring interposed between said oscillating block and lock'block, and means for moving said lock-block, su l.)sfa1'1tiall as set forth.

'13. lln a clutch, the combination of a camwhecf having an undulatm'y working face, a frame in proximity to said cam-whcel, an oscillating block in said frame for movement toward said cam working face, a lock-block for imparting movel'nent to said oscillatiz'ig block, a rcgulating-wedge having engagement with said l ')cl\'block, and means for actuating said regulating-wmlge, snbsti'mtially as set forth.

H1. in a clutch, the combiliiation of a cam wheel having an undl'ilatory working face, a frame in proximity to (aid cam-wheel, an oscillating block in said frame for n'iovcment toward said cam working face, a loek-block for imparting movement to said oscillating block, a regulatingwedge having engagcn'ient with said lock-block, and an oscillating wedge for moving said regulatingovedge, substantially as set forth.

f5. ln a clutch, the combination of a camwheel having an undulatory working face, a frame in proximity to said cam-wheel, an oscillating block in said frame for movement toward said cam working face, a lockblocl: for imparting movement to said oscillating block, a regulating-wedge having engagement with said lock-block, and a spring-controlled oper ating wedge for moving said regulatingwedge, substantially as set forth.

16. In a clutch, the combination of a camwheel, having an undulatory working face, a frame in proximity with said cam-wheel, an oscillating block in said frame for movement toward the working face of said cam, a lockblock for imparting movement to said oscillating block, a regulating-wedge engaging said lock-block, and an operating-wedge engaging said regulating-wedge, substantially as set forth.

17. In a clutch, the combination of a camv wheel having an undulatory working face, a

frame in proximity with said cam-wheel, an oscillating block in said frame for movement toward the working face of said cam, a lockblock for imparting movement to said oscillating block, a regulating-wedge engaging said lock-block, and a spring-controlled operating-wedge engaging said regulating-wedge, substantially as set forth.

18. In a clutch, the combination of a camwheel having an undulatory working face, a frame in proximity to said cam-wheel, an oscillating block in said frame, an antifrictionroller interposed between said oscillating block and cam working face, a spring bearing against said oscillating block, a lock-block bearing against said spring, a regulatingwedge engaging said loch-block, and an operating-wedge bearing against said regulatingwedge, substantially as set forth.

19. In a clutch, the combination of a camwheel having an undulatory Working face, a frame in proximity to said cam-wheel, an oscillating block in said frame, an antifrictionroller interposed between said oscillating block and cam working face, a spring bearing against said oscillating block, a lock-block bearing against said spring, a regulatingwedge engaging said lock-block, an operating-wedge bearing against said regulatingwedge, and a spring associated with said op erating-wedge to be compressed during the movement of said operating-wedge and to impart movement to the operating-wedge thereafter, substantially as set forth.

20. In a clutch, the combination of a cam having an undulatory working face, a frame in proximity to said cam-wheel, an oscillating block in said frame, an antifriction roller interposed between said oscillating block and cam working face, a spring bearing against said oscillating block, a lock-block bearing against said spring, a regulating-wedge engaging said lock-block, an operating-wedge bear ing against said regulating-wedge, a shift-collar for actuating said operating-wedge, and a spring mounted between the forward end of said operating-wedge and said shift-collar, substantially as and for the purpose set forth.

LOUIS J CREGELIUS.

In presence of E. S. KNIGHT, NELLIE V. ALEXANDER.

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