Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – By manual actuator for one or both confronting members
Patent
1978-06-15
1980-10-07
Braun, Leslie
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
By manual actuator for one or both confronting members
F16H 5536, F16H 5552
Patent
active
042261333
ABSTRACT:
A first pulley disc having an inner tubular-shaped member extending concentrically at right angles from the center of said first disc. The inner hub is formed with an externally threaded annular portion adjacent the disc and a smooth surfaces, cylindrical outer end portion. A pair of diametrically opposed slots is formed in the outer end portion and extend in an axial longitudinal direction toward the threaded portion. A second pulley disc having an outer cylindrical-shaped hub member extending concentrically at right angles from the center of said second disc. The outer hub member has an internally threaded end portion adjacent the second disc and an annular internally recessed outer end portion. A threaded opening extends radially through the outer hub member and into the internal recessed portion. The internally threaded portion of the outer hub is engaged with the externally threaded portion of the inner hub for selectively spacing complementary marginal belt engaging surfaces of the disc. A setscrew is adjustably mounted in the radial opening of the outer hub and extends through the inner hub slots to prevent relative rotation between the inner and outer hubs and discs in order to maintain the discs in their adjusted position while simultaneously clampingly engaging a shaft extending through the inner hub to mount the adjusted pulley on the shaft. The smooth cylindrical outer end portion of the inner hub is telescopically received within an inwardly extending annular outer end flange formed on the outer hub to form a general slip fit engagement therebetween to prevent wobble between the threadedly engaged hubs.
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