US1081528A - Friction-clutch. - Google Patents

Description

J. E. GILSON.

FRIGTION CLUTCH.

APPLIOATION FILED JUNE 10, 1912.

1,981,52, Patented Dec. 16, 1913.

2 SHEETS-SHEET 2.

WITNESSES.' A INVENTOR.'

COLUMBIA PLAINOGRAPH C0., WAsHlNu'roN. D. C.

NETE@ STAES PALENT OFFEQE.

JOHN E. GILSON, OF PORT WASHINGTON, WISCONSIN, ASSIGNOR T0 GILSON MANUFAC- TURING COMPANY, 0F PORT WASHINGTON, WISCONSIN, 'A CORPORATION OF WISCONSIN.

FRIoTIoN-CLUTCH.

Specification of Letters Patent.

Patented Dec. 16, 1913.

Application led J'une 10, 1912. Serial No. 702,784.

To @ZZ whom t may concern Be it known that I, JOHN E. GILsoN, a citizen of the United States, residing at Port lVashington, in the county of Ozaukee and State of Wisconsin, have invented a Frietion-Clutch, of which the following is a full and complete specification.

My invention is an improvementJ in friction-clutches, and relates more especially to that particular class in which a split ring or band carried by the driving-wheel is clamped for frictional engagement with a drum keyed to the operating-shaft, whereby to connect said wheel to the shaft for rotation therewith.

The primary object of my present invention is to provide a particular form of mechanism for applying the friction ring or band, such mechanism being strong and durable in construction and effective in use to insure a positive operation'of the clutch device; all as hereinafter fully described in the specification and specifically set forth in the appended claims.

In the. accompanying drawings: Figure 1 is a side view of a friction-clutch, constructed in accordance with my invention. Fig. 2 is a longitudinal vertical sectional view through the clutch. Fig. 3 is a rear end view of the clutch. Fig. 4 is a detail view of the split ring or band, the upper part being broken away to show the means employed for contracting said ring or band.

Fig. 5 is a face view of the wheel whichcarries the split ring or band.

Like numerals of reference indicate like parts in allthe figures of the drawings.

In carrying out my invention the drivingshaft, as 7, to which the friction-clutch is applied, is preferably reduced in diameter at its outer end, as shown in Fig. 2, and upon this shaft is mounted a long sleeve 8, which is securely fixed to said shaft in any suitable manner, for instance at its front and rear ends by a pin 9 and key 10, respectively. The rear end of the sleeve is enlarged to form a friction-drum 8, and at a suitable distance from the drum said sleeve is reduced in diameter to provide two stepped bearing portions 8b and 8, adapted to receive the operating parts hereinafter described.

Mounted upon the 'drum S, so as to frictionally engage therewith, is a split I ing'or` 11b, by which it is connected to a wheel 12, loosely mounted on the bearing portion 8b of the sleeve, said pairs of ears being at opposite sides of the ring or band, and the pair of ears 11a located at one side of the transverse cutor split 11c in the ring to receive a spindle or rocking-shaft 13 which coperates with a sliding-bolt -14 for contracting the ring or band, said bolt extending from a lug, 15, on the ring at the opposite side of the transverse cut or split therein. The spindle or rocking-shaft is carried by the wheel 12, being mounted in a long bearing 12a at one side of the same, and passing through the ears 111L of the split ring or band serves to connect the lat-ter to said wheel. To hold the split ring or band on the end of the spindle or rocking-shaft the latter is provided with a transverse pin 16 at its outer end, and to more securely connect the ring to the wheel a pin 17 is passed through the ears 11b at the other side of the ring and through an opening 12b in the wheel, said wheel being preferably reinforced at this point by bosses which surround the opening at the opposite ends thereof, as shown in the drawings.

For the purpose of operating the slidingbolt the spindle or rocking-shaft 13 is provided with a longitudinal groove forming a shoulder 13a, with which engages a corresponding shoulder, 14a, on the bolt, the lastmentioned shoulder being formed by cutting away or notching the bolt at one side, and in order ,to maintain the sliding-bolt in positive engagement with the spindle or rockingshaft a pin 18 is passed transversely through the pair of ears 11a immediately above said bolt. 'It will be seen by reference to Figs. 3 and 4 of the drawings that when the spindle or rocking-shaft 18 is turned to the right the bolt will draw one end of the split-ring toward the other; thatis to say, will draw the end carrying the lug 15 and bolt toward the end which is support-ed on the wheel l2 by the spindle, and this operation will contract 'the ring or band upon the drum so as to frictionally engage therewith. according to the power applied to the spindle or rocking-shaft. The spindle or shaft is rocked only a certain distance by the operating means, Vhereinafter described, and in order to regulate the frictional engagementof the clutch-surfaces the sliding-bolt is adjusted by means of nuts 19 threaded. on outer end thereof against the lug 15, it being understood, of course, that the bolt rpasses loosely through said lug.

For the purpose of operating the spindle or rocking-shaft the forward end thereof projects beyond the bearing 12a and has keyed thereon an operating-arm 20, the outer end of which is disposed in the path of a sliding-cone 21, mounted on the reduced bearing-portion 8c of the sleeve 8, and for the purpose of manipulating this cone it is provided with a hand-wheel 22, secured thereon by a collar 23. At the upper end of the cone, just beyond the inclined surface thereof, is a peripheral groove 21a, to receive the outer end of the arm, or frictionroller 24 thereon, and maintain the parts in this relative position. rIhe cone is loosely mounted o'n the sleeve so that it will not turn therewith during the operation of sliding it back and forth to operate the arm 20, in applying and releasing the friction-clutch, and it will b-e noted that the movement of the sleeve in applying the clutch is limited by contact with a shoulder, as 8d, formed by the enlarged bearing-portion 8b of the bearing-'sleeve 8. y

rlhe wheel 12, which carries the split ring or band is provided with la long hub, by which it is mounted on the bearing-portion 8b of the bearing-sleeve, and said wheel is held in place by means of a collar 25. rIhe wheel 12 may constitute the driving-wheel fortransmitting the rotary motion of the shaft, but in the present instance the rim of this wheel is narrow, and is provided with yapertures 12C, suitably spaced and adapted to receive the means for fastening theretov'a ring, as 26,` (dotted lines in Figs. 1 and 2.) having peripheral teeth to form a gear-wheel, or of sufficient width to form a pulley.

In Fig. 1 the parts are shown in their relative position when the clutch `is applied, the arm being swung outward with its free end engaging the groove 21a' at the outer portion of the slidingcone, and the spindle 13 turned to exert tension on the bolt to clamp the split-ring tightly upon the friction-drum 8a, and when so arranged the wheel 12 and split-ring turn with the drum and shaft by reason of the frictional engagement of the split-ring with said drum. In releasing the clutch it is only necessary to grasp the hand-wheel 22 and move it outward until the sliding-cone carried thereby releases the arm v20, which latter will then swing inward toward the sleeve and relieve the tension on the bolt thus permitting the split ring or band to expand out of 'fric-f tional vengagement with the drum. This will permit the sleeve 8 and driving-shaft 7 to which it is connected to revolve freely within the split=ring, wheel 12, and slidingcone, and the gearwheel 26 will then remain stationary.

Having thus described my invention, I claim:

1. In a friction-clutch, the combination with the driving-shaft, of a drum fixed thereon and having a bearing-sleeve at one side of the same, a split-ring on the drum to frictionally engage the same, vsaid split-ring having a pair of apertured ears o'n one end and a lug on the other end, apertured ears on the split-ring opposite the aforesaid ears and lug, a wheel mounted onthe bearingsleeve and having a long bearing on a line with the apertured ears at `one of the Vadjoining ends of the split-ring, a pin projecting from the wheel through the other apertured ears of the split-ring, a rocking-shaft in the aforesaid bearing 0n the wheel rotatable in the adjoining ears of the split-ring and having a shoulder between said ears, a bolt extending from the lug on the splitring and having a shoulder with which the shoulder on the rocking-shaft cooperates, and means for operating the rocking-shaft.

A2. In a friction-clutch, the combination with the driving-shaft, of a drum fixed thereon and having a bearing-sleeve at on'e side of thejsame, a split-ring on the drum to frictionally lengage therewith, said splitring having a pair of apertured ears on one end and Ya lugon the other end, apertu'red ears on the split-ring opposite the aforesaid ears and lug, thering being cut transversely on a line with the center oflthe `last'mentioned ears, a wheel mounted on the bearingsleeve and having a long bearing on a line with the apertured ears at'the end of the split-ring, a pin connecting said wheel with the apertured ears hereinbefore last mentioned, a rocking-shaft inthe aforesaid bearing on the wheel rotatable in the adj oining ears at one end of and having a shoulder between 'said earson the split-ring, a bolt eX- tending from the lug of the split-ring and having a shoulder' with which the shoulder on the rocking-shaft coperates; together with an' arniprojecting from the other end of the rocking-shaft, and a sliding cone on the sleeve engaging the outer end of the arm, substantially as shown and described.

In testimony whereof I have signed my name to this specification in the 'presence of two subscribing witnesses.

JOI-IN E. GILSON. Witnesses:

H. W. Boutis, A. J. BOERGER.

Copies of this patent may be obtained vfor five cents each, by addressingl the Commissioner of Patents,

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