Film feed mechanism for moving the film in normal and reverse directions

Claim 2

A feed mechanism for moving a strip, having information recorded thereon, in normal and reverse directions between a supply reel and a take-up reel comprising, in combination, a supply reel shaft for mounting and rotating a supply reel; a take-up reel shaft for mounting and rotating a take-up reel; a respective drive wheel mounted on each shaft; a respective oneway clutch interposed between each drive wheel and its associated shaft; reversible driving means operatively connected to both drive wheels to rotate the same simultaneously in the same selected direction; each one-way clutch coupling its associated drive wheel to its associated shaft only when its associated drive wHeel is driven in a direction to wind strip on a reel mounted on its associated shaft, and disconnecting its associated drive wheel from the associated shaft when its associated drive wheel is driven in a direction to unwind strip from a reel mounted on its associated shaft; a respective braking wheel mounted on each shaft; a respective brake shoe engaged with each braking wheel; and a respective further one-way clutch interposed between each braking wheel and its associated shaft; each further one-way clutch coupling its associated braking wheel to its associated shaft only when its associated shaft is driven in a direction to unwind strip from a reel mounted thereon, and disconnecting its associated braking wheel from its associated shaft when its associated shaft is driven in a direction to wind strip on a reel mounted thereon.

Claim 3

A feed mechanism for moving a strip, having information recorded thereon, in normal and reverse directions between a supply reel and a take-up reel comprising, in combination, a supply reel shaft for mounting and rotating a supply reel; a take-up reel shaft for mounting and rotating a take-up reel; a respective drive wheel mounted on each shaft; a respective one-way clutch interposed between each drive wheel and its associated shaft; reversible driving means operatively connected to both drive wheels to rotate the same simultaneously in the same selected direction; each one-way clutch coupling its associated drive wheel to its associated shaft only when its associated drive wheel is driven in a direction to wind strip on a reel mounted on its associated shaft, and disconnecting its associated drive wheel from the associated shaft when its associated drive wheel is driven in a direction to unwind strip from a reel mounted on its associated shaft; said driving means including a main driving pulley; driven pulleys and endless belts interconnecting said driving pulley to said drive wheels; a capstan roller engaged with the strip between said supply reel shaft and said take-up reel shaft; a driven pulley rotatable with said capstan roller; said endless belts including an endless belt interconnecting said main driving pulley and said last-named driven pulley; a third shaft between said capstan roller and said take-up reel shaft; an idler pulley rotatable on said third shaft and having the strip trained thereover; a driven pulley rotatable on said third shaft; said endless belt interconnecting said driving pulley and the driven pulley rotatable with said capstan roller being trained over said last-named driven pulley; an additional driven pulley rotatable with said last-named driven pulley; a first endless belt interconnecting said additional pulley and the drive wheel mounted on said take-up reel shaft; another additional driven pulley rotatable with the driven pulley which is rotatable with said capstan roller; and an endless belt interconnecting said other additional driven pulley with the drive wheel mounted on said supply reel shaft.

Claim 4

A feed mechanism for moving a strip, having information recorded thereon, in normal and reverse directions between a supply reel and a take-up reel comprising, in combination, a supply reel shaft for mounting and rotating a supply reel; a take-up reel shaft for mounting and rotating a take-up reel; a respective drive wheel mounted on each shaft; a respective one-way clutch interposed between each drive wheel and its associated shaft; reversible driving means operatively connected to both drive wheels to rotate the same simultaneously in the same selected direction; each one-way clutch coupling its associated drive wheel to its associated shaft only when its associated drive wheel is driven in a direction to wind strip on a reel mounted on its associated shaft, and disconnecting its associated drive wheel from the associated shaft when its associated drive wheel is driven in a direction to unwind strip from a reel mounted on its associated shaft; said driving means including a main driving pulley; driven pulleys and endless belts interconnecting said driving pulley to said drive wheels; a capstan roller engaged with the strip between said supply reel shaft and said take-up reel shaft; a driven pulley rotatable with said capstan roller; said endless belts including an endless belt interconnecting said main driving pulley and said last-named driven pulley; a third shaft between said capstan roller and said take-up reel shaft; an idler pulley rotatable on said third shaft and having the strip trained thereover; a driven pulley rotatable on said third shaft; said endless belt interconnecting said driving pulley and the driven pulley rotatable with said capstan roller being trained over said last-named driven pulley; an additional driven pulley rotatable with said last-named driven pulley; a first endless belt interconnecting said additional pulley and the drive wheel mounted on said take-up reel shaft; another additional driven pulley rotatable with the driven pulley which is rotatable with said capstan roller; and an endless belt interconnecting said other additional driven pulley with the drive wheel mounted on said supply reel shaft.

Claim 5

A strip feed mechanism, as claimed in claim 1, in which said reversible driving means includes capstan roller means operatively engaged with the strip between said supply reel shaft and said take-up reel shaft; said capstan roller means being rotated simultaneously with said drive wheel to move the strip in the selected direction.

Claim 6

A strip feed mechanism, as claimed in claim 3, in which each drive wheel, when rotated in a direction to wind strip on the reel connected to its associated shaft is rotated by said driving means at an angular velocity greater than the angular velocity of its associated shaft as controlled by the strip being wound thereon as driven by said capstan roller means.

Claim 7

A strip feed mechanism, as claimed in claim 1, including means frictionally coupling each drive wheel to its associated one-way clutch.

Claim 8

A strip feed mechanism, as claimed in claim 1, in which said drive means includes an external-switch-controlled reversible electric motor.

Claim 9

A strip feed mechanism, as claimed in claim 1, in which said driving means includes a main driving pulley; and driven pulleys and endless belts interconnecting said driving pulley to aid drive wheels.

Claim 10

A strip feed mechanism, as claimed in claim 7, including a capstan roller engaged with the strip between said supply reel shaft and said take-up reel shaft; a driven pulley rotatable with said capstan roller; said endless belts including an endless belt interconnecting said main driving pulley and said last-named driven pulley.

Claim 11

A strip feed mechanism, as claimed in claim 2, in which the endless belts interconnecting each drive wheel to its associated driven pulley are crossed belts.