US260460A - Friction-clutch - Google Patents

Description

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.FRICTION "GL^UTGH.

10.260.460 Patented July A4:, 1882.

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F. O. DESCHAMPS.

A FRIGTION GLUTGH.-

Patented July 4, 1882.

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UNITED STATESv PATENT OEEICE.l

FRANCIS O. DESCHAMPS, OF PHILADELPHIA', PENNSYLVANIA.

FRICTloN-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 260,460, dated July 4, 1882.

Application nien october 5,1881.V (No model.)

a citizen of the United States, and a resident of the city and county of Philadelphia-,in the State of Pennsylvania, haveinvented certain new and useful Improvements in Friction-Clutches, of which the following is a specilication, reference beinghad to the annexed drawings, wherein- Figure lis a longitudinal vertical section of my invention. Fig. 2 is a horizontal `section of the same. Fig. 3 is afront elevation of one of the movable friction-shoes. Fig. 4 is a plan of shaft with attached disk and lcomponent parts. Fig. 5 is a plan of my improved friction-clutch or coupler. Fig. 6 is a transverse vertical section on line as x, Fig. 5.Y Fig. 7 is a longitudinal vertical section of a modilication of the friction-clutch or coupler, and Fig. S is a detail transverse section ot' the same. A

My invention relates to friction-clutches, and has for its object to so construct such devices that they are adapted for use as frictionclutches or as couplers for connecting and disconnecting the adjacent ends of two aligning shafts.

4My invention accordingly consists of the combination, construction, and arrangement of parts hereinafter described and claimed.

Referring to the accompanying drawings, A

"represents a shaft, and B the clutch-pulley,

loosely mounted thereon, soas to revolve on said shaft when free to do so. l provided with spurs or teeth b for the reception of a chain belting when it is desired to use the sanne. C represents an annular ange projecting from the side b of said pulley. The exterior face, b2, of said an ge is designed toreceive a leather or other belt for driving the pulley B. Slch'construction of said pulley permits ofthe use either of a driving chain or belt singly, or, if desired, they may both be employed simultaneously, such use depend-ing upon the' local conditions and the nature of the mechanism to which the clutch is designed to be applied.

b3 represents a hub formed on pulley B, and

j c from its base the side b of said pulley is inclineduntil said side meets the internal periphery of the iiange C, thereby providing a.

conical side for said pulley.

Said pulley is D isa ring fitting snugly withinthe iiange C, and is retained therein by screws d d. The internal periphery, d', of said ring is made conical or inclinin g inoutline, with its largest diameter toward the pulley side b.

E represents a disk formed on or secured in any suitable manner to shaft A. VThe side c of said disk is hollowed out to conform to the degree of inclination of the pulley side b, so that the latter and said side c will contact with each other throughout their entire opposing surfaces when caused to do so. The disk E is provided with a hub, e', upon which are formed v`lugs e2 e3, placed diametrically opposite each otherNas shown.

F F designate the movable friction-clutch or coupling shoes, each one of which consists ot' a semicircular segment recessed at fto pass over the hub e of disk E, and have dovetail or plain slots f into which pass tongues e4, formed on disk E. Said tongues act as guides for the shoes or segments F F to move upon.

fzf7B are inclining recesses, formed on the diametrc sides f3 f3 of the segments or shoes, so that when the latter are placed inposition the respective recesses ff2 in said shoes or segments will thenregister with each other to forni conical-shaped openings f4 f4. In line with said openings are similarly-shaped apertures in disk E, `as shown at e5 e5. y

G G indicate cones placed within the openings f4 e5, and are each provided with arod, g, projecting therefrom in line parallellwith shaft A, their ends g g' being threaded to receive the adjusting -nuts gZ g2, as illustrated.l g? g4 are curved recesses or notches formed on rods g g, as shown.

H H are levers pivoted at h in the lugs e2 e3 on hub e. The short arms, h', of said leversjenter openings f5 in shoes or segments F, F, while their long arms, h2, from their contracted portions h3, flare outwardly from the shaft A,

thepassage therethrough of rods g g, and with inclining openings t' t', through which pass the ends h2 h2 of the levers H'H. f

On the hub i? of collar I are riveted or otherwise secured thereto two springs, K K, in line ends h2 h2 together.

with the rods g g, so that as said collar is moved on shaft A the curved ends k k of said springs will pass successively into and out of the recesses g3 g4 in said rods.

The operation is as follows: Said parts bciug arranged in position, as shown in Figs. l and 2, the clutching` or coupling shoes F F are not in engagement with pulley B, and the latter is free to revolve under the influence of a driving chain or belt, as desired. If at any time it is deemed necessary to slow down or limit the speed of the revolution of said pulley, the collar I is caused to slide in the direction indicated by arrow i, Fig. 5, by means of the usual'or any desired form of operating-handle swiveled to collar I in the customary manner. As the cellarI moves, its inelining openings i i draw the aring lever Consequently the short armsh h of the levers H H spread the shoes FF apart. The sprin gs K K, moving with collar I, have their ends kkpasscd into the recesses gig3 in rods g g, and canse the latter to be moved in direction of said arrow y until the cones G G contact with the sides of the openings f4 in shoes F F, whereupon said movement of collar lis suspended, and, owing to the spreading apart of said shoes by levers H H and cones G G, said shoes are in frictional contact with the side d or inner periphery of ring D, and thereby effecting therewith a slight or limited clutch-connection, which results in decreasing the speed of rotation of the pulley B. Such position of the clutch or coupling shoes is maintained by means of the automatic lock effected by the ends k k of springs K K remaining in the recesses g3 of rods or bars g g. A further movement of collar I draws the lever ends h2 h2 still closer together, and the ends h h spread the shoes F F still farther apart, while the springsK K disengage themselves from recesses g3 to pass into recesses g4, to further move the cones G in the direction of said arrow y to compensate for the additional spreading apart cf the shoes. Such lnovement is continued until collar I abuts againstr the adjusting-nuts g2 on rods g. The spring ends k 7c, remaining in recesses g, as shown in Fig. 5, automatically lock the parts in such described position. The shoesF then bind tightly against ringD at all points 0n its inclined surface d', whereupon, owing to such inclination, the shoes F meanwhile have operated to draw or move the pulley B slightly forward in direction indicated by said arrow y, to cause its conical side b to impinge or frictionally engage with the opposin g side cof disk E, thus obtaining two surfaces for frictional engagement of the clutch or coupling devices, thereby resulting in the formation of a very powerful clutch. To release the clutch or coupling connection, the collar I is simply reversely moved until it arrives at the contracted parts h3 of levers H H.

It will be noticed that the wheel B is not held in place on shaft A by means `of collars or screws passing into an annular slot in said shaft, as has heretofore been the usual manner of holding the clutch-pulley on its shaft, such pulley in my ease being retained in position by means of the disk E and shoes F F acting in conjunction with the ring D, secured to said pulley, as Shown.

As the impinging and bearing surfaces of the clutch wear, the nuts g2 g2 are adj usted to f compensate therefor. When the pulley B and coupling or clutching mechanism are all placed upon one and the same shaft a friction-clutch only isv produced; but when the pulley is secured to one and the coupling or clutching devices secured to the other of two aligning shafts, as shown at A A in Fig. 2, a shaft coupler and clutch is effected.

In Fig. 7 I have shown a slight modification in construction of my invention, wherein the pulley B consists of a ring, B', having the teeth b and plane'surface b formed thereon, as shown, and which is secured by screws n a to a flange, p, on spheroidal shell I. The latter consists of two halves designed to be bolted together at p p,'and is rigidly secured to shaft N. The shoes F F are semi-spherical in outline to fit in a globular chamber within shell I. They are each formed with slots o o, into which pass the small ends of levers H. The latter are pivoted at o o to a sleeve, M, firmly secured to shaft O, and are provided with slots o2 o2, through which pass pins o3 o3, journaled or secured in shoes F, as shown more plainly in Fig. 8.

When collar I is in position shown in Fig. 7 the shoes F F are not in engagement with shell P; hence shaft O revolves independently of shaft N. But when said collar is moved to the right the levers H are drawn together, whereupon their short ends or arms spread the shoes apart to cause them to frictionally engage with spherical shell l?, whereupon both shafts N O revolve together. If desired, the ring B may be dispensed with, in which case the device acts only as a shaft-coupler.

What I claim as my` invention is- 1. A clutching clamp or coupling pulley, B, provided with teeth b, designed to receive a drivin g-chain, and formed with an annular flange, C, having an exterior smooth ory unbroken periphery adapted to receive a drivingbelt, whereby said pulley may be driven by a belt or chain, substantially as set forth.

2. The clutch-pulley B, provided with a ring, D, having inner conical periphery, d', in combination with clutching or coupling mechanism, substantially as shown and described.

3. In a frictionclutch or coupler, the combination of the following elements, viz: a clutch-pulley having a conical side and an attached ring, a disk secured rigidly to the pulley-shaft and provided with movable clutching-shoes, and mechanism for operating said shoes, substantially as shown and described.

4. The combination of pulley B, ring D, disk E, having hub e', with attached shoes F and levers H, the cones G, with recessed rods g,

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and collar I, provided with springs K K, substantially as shown and described. v

5. In a friction or coupling clutch, the combination,witl1 a pulley provided with clutch mechanism from which project notched arms, of a sliding collar having springs thereon, the ends of which are designed and adapted to connect with said notched arms to form an automatic lock, substantially as shown and set forth.

6. In combination with pulley B, the disk E, ring D, shoes F, cones G,.having arms g g, provided with adjusting-nuts g2 g2, and collar I, substantially as set forth.

7. In a friction-clutch or coupler, the combination of the following elements, viz: a clutch or coupling pulley and. a disk or sleeve rigidly secured tothe driving-shaft, said disk being contained in a chamber or recess formed in said pulley, and having shoes secured thereto, which are provided with mechanism, substantially as shown and described, to move said shoes radially and cause them to contact with the wall or walls of said chamber or recess to retain said pulley in position on its shaft, and to form a clutch therefor, substantially asshown and set forth.

8. The shoes F, having slots f f5 and conical recesses f2, substantially as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my band this 30th day ot' September, 1881.

FRANCIS O. DESCHAMPS.

Witnesses:

J. DANIEL EBY, VAN WYcK BUDD.

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