AN IMPROVEMENT IN FRICTION CLUTCH·PULLEYS. Our illustration represents au improved friction clutch pulley for belting, the invention of Thomas J. O'Brien, of Cairo, III., which has an equal friction pressure on both sides, and in which the strain of the belt is directly in the center. The pulley comprises two side pieces or webs loosely mounted on the shaft. To both webs a pulley-rim is rigidly secured. Be· tween the webs and within the pulley-rim is a friction disk fa:stened rigidly on the

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... t and formed with projections, V -shaped in cross-section as shown, which are adapted to engage similarly-formed recesses in two bearing· rings attached to the inner sides of the webs .. The one bearing-ring is movable and is provided with projecting stems to which angle-levers are pivoted. These angle-levers are also pivotally connected with the webs through which the stems extend. Loosely mounted on the shaft is a long sleeve, made in two sections for convenience, which sleeve is connected by links with the augle-Ievers. In a channel on the sleeve a shifting-ring is seated with which the ordinary shift ing-lever is.designed to engage.