G - Physics – 03 – B
Patent
G - Physics
03
B
242/30.4
G03B 21/32 (2006.01)
Patent
CA 1279858
ENDLESS LOOP TRANSPORT AND STORAGE SYSTEM ABSTRACT OF THE DISCLOSURE A transport and storage apparatus and method especially adapted for use in an endless loop film projection system. A turntable rotating at a speed synchronized with a film projector has mounted thereon a platter having a cam track including a plurality of arcuate sections alternating with an equal plurality of straight sections, the latter constituting chords relative to the axis of rotation. Means are provided for measuring the linear speed of the cam track and for applying incoming film to the platter at cyclically varying speeds in timed relation with the linear speed of the track. Radially extending low friction skid strips may be provided on the upper surface of the turntable to assist the portions of film layers applied during the chord sections of the cam track to move radially inwardly on the platter to form inwardly directed rounded cusps. Template means may be provided for use during initial stages of loading or make-up of a filmed program on the platter, and anchor blocks of rubbery high friction material may be provided on the platter surface to resist the breaking down of the ends of each of the arcuate portions of film on the platter until enough film layers are applied to give the coil stability.
518537
Crites Clark F.
Macrae & Co.
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