US1142574A - Ratchet mechanism. - Google Patents

Description

APPLlCAT-ION FILED 118.4119111.

'i' Ptented J uile- 8 2 SHEETS-SHEET 1.

pNrrEn f s'iarus rafrnNai ormoni.'

JOHN T. HUCK, of' sAN FRANCISCO, cALiFoRNIA,.Ass1GNoR or 03E-HALF TQWARREN J. FLICK, 0F SAN FRANCISCO, CALIFORNTA.

RATCHET MECHANISM.

Application filed February 4, 1914. Serial No. 816,492.

T0 all whom it may concern.' l n l Be it known that I, JOHN T.l HUCK', a citizen of the United States, residing at San Francisco, in the countyof San Francisco and State of California, have invented new and useful Improvements in Ratchet Mechanism, of which the following is a Specification. y

This invention relates to improvements in ,ratchet mechanisms and has particular application to ratchet mechanism of the -roller type.

with the least possible friction between the parts.

It is also my purpose to provide a mechanism of the type set forth which will em- -brace the desired featuresof simplicity, ef-

ficiency and durability, one which may be installed and maintained at a minimum expense and one which may be manufactured and marketed at small cost.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawings; Figure 1 is a view in front elevation of a ratchet mechanism constructed in accordance with my present invention. Fig. 2 is a vertical transverse sectional View therethrough. Fig 3 is a similar view taken at right ang-les to ig. 2. F igjfl is a collective AView showing par-ts of the mechanism in elevation.

Referring now to the drawings in detail, 1 designates the driving member ofxthe ratchet mechanism, such member comprising a disk 2 having a central opening 3 formed therein and provided with an outwardly extending annular collar 4 concentiically of the opening, such collar being preferably ,formed integral with the disk and is equipped with a set screw 5 by means of which the disk may be fastened to a shaft or other like element: y Formed on the periphery of the disk 2 is an annular fiange 6. Disposed within the flange 6 and in con* tact therewith is an annulus 7 having the inner wall thereofformed with a series of pockets 8 having inclined inner walls 9 terminating at the relativelydeep ends thereof in abrupt shoulders 1 0. Formed in the annulus 7 and leading 4from the shoulders 10 onto the periphery of such annulus are angularly arranged bores 11 alining with threaded apertures 12 formed in thev flange 6 and disposed at an angle thereto. Slidably mounted'within each bore 11' is a shoe lll having the inner end thereof concaved as Aat 15 and adapted to project into the adjacent pocket, and connected with the outer 1 end of the shoe is a pinl, while threadedly engaging each aperture 12 is a plug 17 designed to hold the shoe within the bore.. A coiled expansion spring 18 surrounds each pin'l and has one end abutting the outer end ofthe respective shoe and the-opposite extremity in engagement -with the. inner end of the plug 17, such spring acting to pockets. l.

19 designates the driven member of the ratchet mechanism, such member compris- -ing an annular plate 20 disposedwithin the Specification of Letters Patent. Patented June 8, 19:15.

' force the shoes normally into the respective annulus 7 formed with the pockets 8 and 'disposed within such pockets are rollers 21 engaging the inner inclined walls of the respective pockets and the periphery of theV annular plate. In the present instance, a

ring-like plate 23 is fastened to the outer edge of the flange 6 and acts toL prevent accidental displacement of thero-llers 21.

From. the foregoing description taken in connection with the accompanying drawings, the. construction, mode of operation and manner ofemploying myinvention will he readily apparent. It will be seen that when the driving member 1 of the clutch or ratchetmechanismvis rotated in the direction of the arrowin Fig; 1 the rollers will be caused to bind between the inclined inner walls of the pocketsl` andthe periphery of theplate .20 of thedriven memberthereby ice n.

e'ecting a connectionbetwe'en -the driving and driven members to rotate the latter from i ment with the rollers act to force, the latter toward the shallow ends of the pockets, incident to the springs -18 acting upon the shoes. Thus, the rollers are positively actuated to bind between the shallow ends of the pockets and the periphery of the plate 20 so as to ee'ct a quick ande'ective connection between the driving and driven members of the clutch or ratchet mechanism. Iclaim: n a ratchet mechanism, a driving member embodying a disk, an annular {iange formed `on the periphery of said disk and provided with a series of apertures spaced apart about the annulus and arranged at an anglethereto, an annulus-wtithin said ange and having @Matra the inner /face thereof ormed with a series of pockets having inclined lower. walls terminating in abrupt shoulders, said annulus being formed with bores alining with the cavel extremities of the respective shoes whereby the rollers are forced into Jrictional engagement with the shallow ends of said pockets and the periphery of said circular plate when the driven member is rotated in one direction. f ,i y

1n testimony whereof l aiix my signature in presence 'of two witnesses.

Jorrit r.. nnen.

` Witnesses:

W. W. Hwy, HAMILTON J. RIeGiNs.

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