Film canister

Claim 2

A film canister comprising an enclosure of circular formation having a throat for admitting film into the enclosure, the film being propelled by a driver external of the canister, and a resilient member within the enclosure, pivotally connected at one end thereof to the enclosure and being free at the other end to move along the enclosure, said member occupying the position of a chordal line between two points of its intersection with the curve of the enclosure, said member being contactable by said film upon being received within the enclosure and being outwardly deflectable in a direction away from the axis of the enclosure and assuming a position conforming with the curvature of the circular formation by reason of the film being admitted in said enclosure and pressing against said resilient member.

Claim 3

The canister of claim 1 wherein the resilient member is a thin plate with its central area removed.

Claim 4

In a canister for receiving film propelled by external means, the improvement comprising a resilient plate adaptable to respond to increasing and decreasing pressures of the film thereagainst and pivotally connected at one end thereof with the canister in a wall portion thereof, the other end being free to move along the wall in response to increasing or decreasing pressure by the coils of film, said plate extending in chordal fashion from the pivotal connection and adapted to be engaged by the film as it is received into the canister, the plate initially restraining the film in a chordal path across the canister and subsequently deflecting outwardly in relation to the center of the canister to conform to the shape thereof as additional film is received therein.

Claim 5

In a canister for receiving film propelled by external means, the improvement comprising a resilient plate adaptable to respond to increasing and decreasing pressures of the film thereagainst and pivotally connected at one end thereof with the canister in a wall portion thereof, the other end being free to move along the wall in response to increasing or decreasing pressure by the coils of film, said plate extending in chordal fashion from the pivotal connection and adapted to be engaged by the film as it is received into the canister, the plate initially restraining the film in a chordal path across the canister and subsequently deflecting outwardly in relation to the center of the canister to conform to the shape thereof as additional film is received therein.

Claim 6

The canister of claim 3 wherein the resilient plate includes edge portions only contactable by the edges of the film.

Claim 7

The canister of claim 3 wherein the resilient plate includes a pair of spaced rails connected by end portions, the end portions being of lesser dimension in thickness than the rails.

Claim 8

Film-containing apparatus having a supply canister and a take-up canister, means for propelling the film from one canister to the other, and means within the take-up canister for controlling film as it is being propelled therein, said controlling means comprising a resilient plate pivotally connected at one end thereof to a wall of the canister, and the other end being freely movable along the wall, and the plate being responsive to increasing and decreasing pressures of the film thereagainst, and extending across a chordal portion of the canister in undeflected condition, said plate being contactable by the film as it is propelled from the supply canister to the take-up canister, said plate restraining the initial coil of film along a path of lesser diameter adjacent the chordal portion, and deflecting outwardly by reason of increased pressure from additional coils of propelled film, and assuming a position conforming with the curvature of the canister upon loading thereof.

Claim 9

Film-containing apparatus having a supply canister and a take-up canister, means for propelling the film from one canister to the other, and means within the take-up canister for controlling film as it is being propelled therein, said controlling means comprising a resilient plate pivotally connected at one end thereof to a wall of the canister, and the other end being freely movable along the wall, and the plate being responsive to increasing and decreasing pressures of the film thereagainst, and extending across a chordal portion of the canister in undeflected condition, said plate being contactable by the film as it is propelled from the supply canister to the take-up canister, said plate restraining the initial coil of film along a path of lesser diameter adjacent the chordal portion, and deflecting outwardly by reason of increased pressure from additional coils of propelled film, and assuming a position conforming with the curvature of the canister upon loading thereof.

Claim 10

The apparatus of claim 6 wherein each canister includes a resilient plate responsive to increasing and decreasing pressures of the film thereagainst, the plates being alternately deflected upon transfer of the film from one canister to the other.