Apparatus for adjusting the rotational speed of a drive mechanis

Details Apparatus for adjusting the rotational speed of a drive mechanis Apparatus for adjusting the rotational speed of a drive mechanis

1976-06-24

1977-09-13

Scott, Samuel

Machine element or mechanism

Mechanical movements

Grip units and features

74207, F16H 1508, F16H 1510, F16H 1512

Patent

active

040474429

ABSTRACT:
The invention concerns a device for adjusting the rotational speed of a drive mechanism preferably of the type used in a movie projector and provided with a drive motor having a stationary fixed stator, a rotor rotating in only one direction and connected to a friction wheel with at least one, preferably two, oppositely disposed friction discs fixed on a drive shaft for driving engagement with the friction wheel, the friction wheel being adjustable with respect to the friction discs in a radial direction to thereby adjust the rotational speed of the driving mechanism.

REFERENCES:
patent: 1397296 (1921-11-01), Schaf, Jr. et al.
patent: 1811465 (1931-06-01), Geloso
patent: 2273121 (1942-02-01), List
patent: 3125284 (1964-03-01), Lawler
patent: 3496943 (1970-02-01), Mueller et al.

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