Variable speed V-belt sheaves

Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Including lubrication or particular guide or bearing for...

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308 5R, F16H 5556

Patent

active

043701396

ABSTRACT:
A variable speed drive having a pair of sheaves and a belt interconnecting the sheaves in which one of the flanges on at least one of the sheaves is mounted on an axially moveable hub and is adjustable toward and away from the other flange. The hub is mounted on a shaft, and a key interconnects the shaft and hub and prevents relative rotation between the shaft and hub. The bearing surface of the hub is provided with spaced axially disposed lubrication grooves, and the shaft contains an axial passage and radial ports through which lubrication is injected into the grooves in the hub. An annular lubrication groove interconnects the axial lubrication grooves and is provided with a port for relief of excess lubricating pressure. The flange ends of the axial grooves are closed by a seal disposed in the end of the bore in the hub at the inner end thereof. The key is disposed in complementary key-ways in the shaft and hub, and the side of the hub adjacent the key is substantially uninterrupted and provides a smooth surface for contacting the key to facilitate sliding of the hub along the key and to prevent excessive wear between the hub and key.

REFERENCES:
patent: 1634768 (1927-07-01), Bonner
patent: 2740246 (1956-04-01), Smith et al.
patent: 2746816 (1956-05-01), Michie et al.
patent: 3252346 (1966-05-01), Prior
patent: 3611821 (1971-10-01), Legler
patent: 3785458 (1974-01-01), Caldwell et al.
patent: 4173155 (1979-11-01), Togami et al.
Reliance Electric Brochure, Bulletin No. G-2533-1.
VDI Zeitschrift (periodical) 106 (1964) No. 2, Sep. (III) p. 1360.
"Grundzuge der Schmiertechnik", by Erich Falz, Verlag Julius Springer, Berlin, 1931.

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