Film supply and take-up system for motion picture projector

Details Film supply and take-up system for motion picture projector Film supply and take-up system for motion picture projector

1977-02-22

1979-10-02

Taylor, Billy S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 7551, 352128, B65H 1748, G03B 2100

Patent

active

041695666

ABSTRACT:
An improved film supply and take-up transport for use with a motion picture projector. At least two horizontal film platters are connected through bearing plates to a single vertical drive shaft. A circular film winding core is selectively positioned concentric with the shaft on one platter. The core engages a mechanism for locking the platter through the bearing plate to the drive shaft for operating the platter in a take-up mode. A motor is controlled to rotate the drive shaft for winding the film onto the core at the same rate that the film is advanced through the projector. Film is supplied to the projector from the center of a film coil on another platter which is coupled through its bearing plate to the drive shaft. An auxiliary motor is intermittently operated to initially accelerate the supply platter when the projector is first started and to control the supply platter speed to maintain a desired film supply rate.

REFERENCES:
patent: 3780959 (1973-12-01), Burth
patent: 3823890 (1974-07-01), Potts
patent: 4010910 (1977-03-01), Boudouris et al.

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