Worm gear mount

Details Worm gear mount Worm gear mount

1977-08-30

1982-01-05

Scott, Samuel

Machine element or mechanism

Gearing

Pivotally supported

308 37, 308 28, 74 8914, 74425, F16H 3500, F16C 3500

Patent

active

043087590

ABSTRACT:
A worm gear mount of a type used in slide projectors includes a shaft, a pair of bearings supporting the shaft, a drive wheel on an end overhang of the shaft extending beyond one of the bearings, a worm gear on the shaft betweeen the bearings, and a gear wheel rotatable on an axis perpendicular to the shaft and meshing with the worm gear. The bearings are formed with generally U-shaped openings that face toward the gear wheel, and the openings allow the shaft to be moved into the bearings from the region occupied by the gear wheel. The gear wheel serves to prevent movement of the shaft out of the openings, and the openings are preferably shaped so that the shaft has a snap fit in the bearings. The shaft is also preferably formed with reduced diameter journal portions fitting in the bearings to prevent axial movement of the shaft.

REFERENCES:
patent: 2220537 (1940-11-01), Murrin

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