US805550A

US805550A - Friction-clutch.

Info

Publication number: US805550A
Application number: US25022105A
Authority: US
Inventors: Harry W Hill
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-03-15
Filing date: 1905-03-15
Publication date: 1905-11-28
Anticipated expiration: 1922-11-28

Description

PATENTED NOV. 28, 1905.

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H. W. HILL. FRIGTION CLUTCH. APPLIUATION FILED MAR.15, 1905.

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105,005,550. PATENTED Nov. 28, 1905.

H. W. HILL.

FRIOTION CLUTCH.

APPLIGATION FILED 55.55.15, 1905.

No. 805,550. PATENTED NOV. 28, 1905.

H. W. HILL.

IRICTON CLUTCH. APPLIGATION FILED Mime, 1905.

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@X -/J) WinGJJeJ HARRIT W. HILL, OF CLEVELAND, OHIO.

lFFlCTlON-CLUTCH.

Specication of Letters Patent.

Patented Nov. 28, 1905.

Application filed March`15,l905. Serial No. 250,221.

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Be it known that I, HARRY W. HILL, a citi- Zen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Friction-Clutches, of which the following is afull, clear, and exact description,

reference being had to the accompanying drawings.

This invention relates to the class of friction-clutches which employ a pair of inversely and radially movable jaws adapted to grasp a cylindrical pulley-iiange between them.

The primary objects of the invention are to provide a strong and simple construction which can be quickly assembled and initially adjusted to cause the jaws when closed to bear equally and with the desired force upon opposite sides of the cylindrical ange and which can also be very easily adjusted at any time to compensate for wear.

The invention may be summarized as consisting of the construction and combination of partshereinafter described, and pointed out delinitely in the claims.

In the drawings, Figure l is a view of one side of the clutch-frame and one pair of jaws l mounted thereon and the parts associated with said pair of jaws. Fig. 2 is a sectional view in the plane of line 2 2 of Fig. 1. Fig. 3 is an end view, and Fig. 4: a front View, of the outer jaw. Fig. 5 is an end view, and Fig. 6 is a front view, of the inner jaw. Fig. 7 is a side View of the two jaws in normal relationship. Fig. 8 is a central sectional view of the inner jaws, and Fig. 9 is a sectional view on line 9 9 of Fig. l with the jaws removed.

Referring to the parts by letters, A represents the clutch-frame or spider, whose hub a5 is to be attached to a rotatable shaft M. In the outer edge of this spider are a plurality of equally-spaced radial recesses a, six being shown, and on one face of the spider, associated with each of said radial recesses, are two heavy ribs or lianges a', which are parallel with each other and with a radial line extending centrally through the associated recess. In the proximate faces of these flanges are grooves a2, extending from the periphery inward a suliicient distance. These grooves are for the purpose of guiding the jaws B and D in radial paths, and they are of suitable width for that purpose.

Thepouter jaw B has a ange b with a concave inner face fitted to the curvature of the outer periphery of the ange o on the pulleyl C. The jaw has also a radially-extended shank b, whose edges are parallel. The width of the jaw-shank is substantially eq ual to the distance between the bottoms of the opposing grooves t2 in the lianges ct. The inner jaw D has a liange Z with aconvex face fitted to the curvature ofthe inner periphery of the pulleyflange c, and it also has a shank d. When the parts are assembled, the edges of these shanks ZJ and d' are in contact with each other and are inserted in the grooves a2, which grooves are of proper width to receive the edges of the jaw-Shanks and guide them nicely. The two jaws are moved simultaneously and inversely toward or Vfrom the interposed iiange c by a rocker E, which is fulcrumed upon the frame A and is pivotally connected in the manner to be now explained on opposite sides of its fulcrum with the two jaws of a pair. This rocker E is preferably formed of two thin wrought-metal pieces e e. This rocker is pivotally connected at one end with ears Z2 on the inner jaw D. Said rocker is adjustably fulcrumed upon the clutch-frame. Upon the clutch-frame and associated with each pair of jaws is a flange or rib (t3, which lies between a radial recess a and the hub of the frame, and there is a radial hole through this rib. A fulcrurn-bolt G passes loosely through this hole and its outer flattened end lies between the two members e of the rocker E and is pivoted thereto. Nuts g' g2 screw upon this bolt on opposite sides of said iiange and against said flange, and thereby rigidly fasten the bolt G to the frame A in any desired relation. By moving this bolt inward or outward the fulcrum of the rocker E is correspondingly moved outward or inward. The outer jaw has in a similar way adjustable connection with the rocker E. A boss or enlargement 53 is formed on the rear side of jaw B and there is a radial hole through said boss. A bolt K passes loosely through this hole toward the shaft M and its flattened end lies between and is pivoted to the two members e and the rocker E. This bolt is rigidly connected to the outer jaw in any desired relation thereto by means of nuts t', which screw upon the bolt and against opposite sides of said boss b3.

A lever N is pivoted to the hub a5 of the clutch-frame and it is connected by a link P with the long arm of the rocker E.

R represents a sleeve which slides upon the shaft and has a link T pivoted to it, which link is also pivotally connected to the lever N.

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By moving this sleeve R along' the shaft the clutch-jaws (all pairs thereof) are moved to grasp or release the interposed llange c.

Clutches of this type have always more than one pair of jaws and associated mechanism like that which is above described. The number of pairs of jaws, however, is not material. Fig. l in the drawings, while it shows the entire clutch frame, shows one pair of jaws mounted thereon and only the operating mechanism associated with that pair of jaws. There are, however, six radial recesses a in the clutch-frame, as shown, and it will be understood that a pair of jaws and operating mechanism like that which has been described is associated with each of these radial recesses.

I claim-w 1. In a friction-clutch, the combination of the clutch-frame, a pair of inversely and radially movablejaws mounted thereon, a rocker having a radially-adjustable fulcrum-pivot by which the rocker is connected with said frame, pivot connecting said rocker to one of the jaws, and a radially-adjustable pivot connecting the other jaw with said rocker on opposite side of the said fulcrum-pivot, and means for operating said rocker.

2. In a friction-clutch, in combination, a pulley having a cylindrical flange, a clutchframe, a pair of inversely and radially movable jaws mounted upon said frame and adapted to grasp said flange between them, a bolt adjustably secured to the outer jaw, a rocker, pivot-pins connecting' said rocker with the inner jaw and with said bolt, a bolt adjustably secured to the clutch-frame, a pivot-pin connecting this bolt with the rocker ata point midway between the two pivot-pins before mentioned, and mechanism for rocking said rocker.

3. In a friction-clutch, in combination, a clutch-frame having` a plurality of radial recesses through which the rocker may pass, and the following parts associated with each radial recess, to wit: two parallel ribs integral with and projecting from the inner face of said frame on opposite sides of said recess, which ribs have grooves in their proximate faces, a boss a3 integral with and projecting from the inner face of said clutch-frame, a pair of inversely and radially movable jaws having shanks which, when in contact with scatto each other, are slidably litted in said grooves, the outer jaw having an outwardly-projecting boss a bolt adjustably secured in said boss Z13 and extending therefrom toward the axis of the clutch, a rocker extending through the recess in the frame and pivotally connected with said bolt and with the inner jaw-shank, a bolt adjustably secured in boss 3 and extending therefrom away from the axis of the clutch, a pivot-pin connecting said bolt with the rocker at a point midway between the two pivoted pins before mentioned, and mechanism for rocking said rocker.

il. In a friction-clutch, in combination, a pulley having a cylindrical flange, a clutchframe, a pair of inversely and radially movable jaws mounted upon said frame and adapted to grasp said flange between them, a bolt adjustably secured to the outer jaw, a rocker, pivot-pins connecting said rocker with the inner jaw and with said bolt, a bolt adjustably secured to the clutch-frame, a pivot-pin connecting' this bolt with the rocker at a point midway between the two pivot-pins before mentioned, a lever pivoted to the clutchframe, a link connecting the inner end of said lever with the outer end of said rocker, aslidable sleeve, and a link connecting said sleeve with the outer end of said lever.

5. In a friction-clutch, in combination, a clutch-frame, a pair of inversely and radially movable jaws mounted thereon, a bolt adjustably secured to the clutch-frame and having a flattened outer end, a bolt adjustably secured to the outer jaw and having a flattened inner end, two rocker members e lying on opposite sides of said flattened bolt ends, three pivot-pins connecting the inner jaw-shank and both of said flattened bolt ends with said rocker members, a link P whose outer end extends between the outer ends of the rocker members and is pivoted thereto, a lever N pivoted to the frame and to the inner end of said link P, a slidable sleeve R, and a link t pivotally connecting with said sliding sleeve and with the outer end of the lever N.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

HARRY W. HI LL.

Witnesses:

E. B. GILoI-IRIs'r, E. L. THURs'roN.

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