US320007A - Friction-clutch - Google Patents

Description

(NoModeL) A. D. SIMPSON.

FRIOTIONVGLUTOH.

Patented June .16, 1885.

VLSS ES I/n/va niir ra'rns ATNSON D. SIMPSON, OF NIVERVILLE, NEW YORK.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 320,007, dated June 16, 188 5.

Application filed March 28, 1885. (No model.)

To all whom it may concern:

Be it known that I, ANsoN D. SIMPsoN, a citizen of the United States, residing at Niverville, in the county of Columbia and State of New York, have invented a new and useful Improvement in I riction-Olutches, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings.

This invention relates to that class of clutches for which I have Letters Patent Nos. 305,764 and 305,765, dated September 30, 1884; and it consists in partially duplicating the hub, the segments, and their belongings, as hereinafter described, for the purpose of taking up any wear that may occur and cansing the extreme end of the shoulder of the hub to carry back the segments. I obtain these objects by the mechanism illustrated in the accompanying drawings.

Figure 1 is a face view of the disk, hub, and springs interposed between the hub and segments, and the segments resting against the hub. Fig. 2 is an inside face view of the cap. Fig. 3 is a sectional view of the clutch, taken on the line 00 00, Fig. 1.

A circular plate or disk, A, is provided with a double eccentric hub, B, formed of two eccentric arcs and two segments of a circle, the arcs meeting the segments of a circle at points directly opposite each other across the center of the shaft at points marked a a.

The hub is thus provided with two shoulders, b b, and two opposite points of pressure, d 63.

Two segments, 8 s, are placed against the hub B, the inner edges being straight and resting against the shoulders of the hub and coming in contact with the eccentric at opposite points across the center of the shaft, and the outer edges-curved in such a manner that the said outer edges form a complete broken circle when the inner edges of the segments are at rest against the hub. The straight sides of the segments 8 s and the shoulders of the hubB are recessed to receive springs E E.

A cap, 0, fits snugly but loosely over the outer edges of the segments 8 s.

The disk A or the cap 0 may be provided with cogs, or with a groove for a belt or cord,

or with any suitable means for transmitting is revolved in the direction of the arrow, Fig. 1, the outer edges of the segments 8 s will bind against the rim of the cap 0, and the inner edges of the said segments will come in contact with the eccentrics of the hub, as the gravity of the segments vs 3 and the releasing of the springs E E that are interposed between the segments and the shoulders of the hub causes the segments 8 s to press against the eccentrics of the hub, binding the cap 0 and hub B together. If the cap 0 is revolved in the inverse direction of the arrow, the segments will not bind, and the cap 0 will slide over them.

The disk A is held firmly on the shaft and the cap 0 mounted loosely on the shaft, or the cap 0 may be held firmly on the shaft and the disk A may be mounted loosely, and the motion transmittedfrom the disk or cap, as desired, or the disk and the cap can be mounted on separate shaftsif desired, or in any other suitable manner.

The advantage and improvement of this clutch over the ones referred to in my before-mentioned patents are that by interposing springs between the shoulders of the hub and the segments they constantly keep the segments in place and take up any wear that may occur, and, also, by making the shoulder of the hub a segment of a circle, instead of a tangent, it causes the extreme ends of the shoulders to carry the segments back instead of the whole surface of the tangent,

and therefore they are carried back with less power.

Having thus explained the construction of my friction-clutch, what I claim as new, and desire to secure by Letters Patent, is-

A friction -clutch made substantially as hereinbefore described, and consisting of a disk or plate provided with a double eccentric hub, B, formed of two eccentric arcs meeting the segments of a circle at points directly opposite each other across the center of the shaft at points marked a a, the segments with straight sides resting against the hub, with springs interposed between the hub and segments, and the cap fitting over them, for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

ANSON D. SIMPSON.

Witnesses:

LAURA J. SrMrsoN, MILTON J. DOWNING.

ICC

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