Projector function control mechanism

Claim 2

For a motion picture projector having (1) a light source for projecting images from a received film material, (2) electric drive means for advancing said film material through the projector and (3) a selection lever movable to a plurality of positions to select the mode of operation of the projector from a plurality of modes including off, still, project, rewind and fast forward the improvement comprising: a. a coordinating plate pivotally supported by said projector, said coordinating plate including an irregularly shaped opening defined by a plurality of edges, said opening being adapted to receive said selection lever which cooperates with different ones of said plurality of edges for moving said coordinating plate between (1) A first position when said selection lever is moved to said position for selecting said project and said still modes of operation and (2) a second position when said selection lever is moved to the position for selecting said off, rewind or fast forward modes of operation; b. a film gate comprising a first portion and a second portion, said second portion being movable relative to said first portion between (1) an open position wherein it is spaced from said first portion to permit said film material to be readily inserted between or removed from between said first portion and said second portion or to permit said film material to be readily moved therebetween, and (2) a closed position wherein said second portion is moved closely adjacent to said first portion such that said received film material is movable along an essentially flat plane defined therebetween to permit projection of images from said film material; and c. linkage means operatively coupling said coordinating plate and said second portion of said film gate such that when said coordinating plate is moved by said selection lever to its first position, said second portion of said film gate is moved to its closed position and when said coordinating plate is moved by said selection lever to its second position, said second portion of said film gate is moved to its open position.

Claim 3

The improvement as set forth in claim 1 further comprising an electric switch supported by said projector such that movement of said selection lever to the position for selecting said still, project or rewind mode of operation is effective to open said electric switch for energizing said electric drive means and movement of said selection lever to the position for selecting said off mode of operation is effective to de-energize said electric drive means.

Claim 4

The improvement as set forth in claim 1 further comprising means for selectively energizing and de-energizing said light source, said means being supported by said projector and being operatively coupled to said coordinating plate such that when said coordinating plate is moved toward its first position said means energizes said light source and when said coordinating plate is in its second position said means deenergizes said light source.

Claim 5

The improvement as set forth in claim 1 wherein said linkage means comprises a slide bar movably supported by the projector, means coupling one end portion of said slide bar to said coordinating plate, and means coupling the other end portion of said slide bar to said second portion of said film gate to effect pivotal movement of said second portion of said film gate in response to movement of said slide bar.

Claim 6

For a motion picture projector having (1) a light source for projecting images from a received film material, (2) an electric drive means, (3) a first rotatable spindle adapted to receive a roll of film material, said spindle including a rotatable drum portion, (4) a second rotatable spindle for winding said film material into a roll, said second spindle being supported by said projector at a spaced distance from said first spindle, (5) first and second drive means operatively coupled to said electric drive means for selectively cooperating with said first and second spindles respectively for rotatably driving said spindles, (6) first and second brake means for selectively cooperating with said first and second spindles respectively for braking rotation thereof, and (7) control means operatively coupled to said first and second drive means for controlling said drive means and operatively coupled to said first and second brake means for controlling said brake means such that said motion picture projector can be operated at a plurality of modes of operation, the improvement comprising: a. a control plate supported by said motion picture projector, said control plate including an irregularly shaped opening defined by a plurality of edges, said opening beIng adapted to receive said control means which is suitable for cooperating with different ones of said plurality of edges for maintaining said control plate in either (1) an open or (2) a closed position; b. a film gate supported by said projector comprising a first portion and a second portion, said second portion being movable relative to the first portion between (1) an open position wherein it is spaced from said first portion to permit said film material to be readily inserted between or removed from between said first and second portions or to permit said film material to be readily moved therebetween and (2) a closed position wherein said second portion is closely adjacent to said first portion such that a received film material is urged into an essentially flat plane defined therebetween for projection of images from the film material; and c. linkage means connecting said control plate and said second portion of said film gate such that when said control plate is moved to its open position, said second portion of said film gate is moved to its open position, and when said control plate is moved to its closed position, said second portion of said film gate is moved to its closed position.

Claim 7

For a motion picture projector having (1) a light source for projecting images from a received film material, (2) an electric drive means, (3) a first rotatable spindle adapted to receive a roll of film material, said spindle including a rotatable drum portion, (4) a second rotatable spindle for winding said film material into a roll, said second spindle being supported by said projector at a spaced distance from said first spindle, (5) first and second drive means operatively coupled to said electric drive means for selectively cooperating with said first and second spindles respectively for rotatably driving said spindles, (6) first and second brake means for selectively cooperating with said first and second spindles respectively for braking rotation thereof, and (7) control means operatively coupled to said first and second drive means for controlling said drive means and operatively coupled to said first and second brake means for controlling said brake means such that said motion picture projector can be operated at a plurality of modes of operation, the improvement comprising: a. a control plate supported by said motion picture projector, said control plate including an irregularly shaped opening defined by a plurality of edges, said opening beIng adapted to receive said control means which is suitable for cooperating with different ones of said plurality of edges for maintaining said control plate in either (1) an open or (2) a closed position; b. a film gate supported by said projector comprising a first portion and a second portion, said second portion being movable relative to the first portion between (1) an open position wherein it is spaced from said first portion to permit said film material to be readily inserted between or removed from between said first and second portions or to permit said film material to be readily moved therebetween and (2) a closed position wherein said second portion is closely adjacent to said first portion such that a received film material is urged into an essentially flat plane defined therebetween for projection of images from the film material; and c. linkage means connecting said control plate and said second portion of said film gate such that when said control plate is moved to its open position, said second portion of said film gate is moved to its open position, and when said control plate is moved to its closed position, said second portion of said film gate is moved to its closed position.

Claim 8

The improvement as set forth in claim 5 further comprising an electric switch supported by said projector such that movement of said control means is selectively effective to open and close said electric switch for energizing and de-energizing said electric drive means for different modes of operation.

Claim 9

The improvement as set forth in claim 5 further comprising means for selectively energizing and de-energizing said light source, said means being supported by said projector and being operatively coupled to said control plate such that when said control plate is in its open position said means de-energizes said light source and when said control plate is in its closed position said means energize said light source.

Claim 10

In a motion picture projector having (1) first and second spindles rotatably supported by said projector, said spindles being suitable for winding and unwinding a received filmstrip which is transported therebetween, (2) first driving means and first braking means supported by said projector for controlling the driving and braking of said first spindle, (3) second driving and second braking means supported by said projector for controlling the driving and braking of said second spindle, and (4) control means for moving said first and second braking means between a first condition wherein said first braking means brakes rotation of said first spindle sequentially before the braking of the rotation of the second spindle by said second braking means and a second condition wherein said second braking means brakes rotation of said second spindle sequentially before the braking of the rotation of the first spindle by said first braking means, the improvement comprising: a. a control plate supported by said motion picture projector, said control plate including an irregularly shaped opening defined by a plurality of edges, said opening being adapted to receive said control means which is suitable for cooperating with different ones of said plurality of edges for maintaining said control plate in either (1) an open or (2) a closed position; b. a film gate supported by said projector comprising a fixed portion and a movable portion, said movable portion being movable between (1) an open position wherein it is spaced from said fixed portion to permit said film material to be readily inserted between or removed from between said movable and said fixed portion or to permit said film material to be readily moved therebetween and (2) a closed position wherein said movable portion is closely adjacent to said fixed portion such that a received film material is urged into an essentially flat plane defined therebetween for projection of images from the film material; and c. linkAge means connecting said control plate and said movable portion of said film gate such that when said control plate is moved to its open position, said movable portion of said film gate is moved to its open position, and when said control plate is moved to its closed position, said movable portion of said film gate is moved to its closed position.

Claim 11

In a motion picture projector having (1) first and second spindles rotatably supported by said projector, said spindles being suitable for winding and unwinding a received filmstrip which is transported therebetween, (2) first driving means and first braking means supported by said projector for controlling the driving and braking of said first spindle, (3) second driving and second braking means supported by said projector for controlling the driving and braking of said second spindle, and (4) control means for moving said first and second braking means between a first condition wherein said first braking means brakes rotation of said first spindle sequentially before the braking of the rotation of the second spindle by said second braking means and a second condition wherein said second braking means brakes rotation of said second spindle sequentially before the braking of the rotation of the first spindle by said first braking means, the improvement comprising: a. a control plate supported by said motion picture projector, said control plate including an irregularly shaped opening defined by a plurality of edges, said opening being adapted to receive said control means which is suitable for cooperating with different ones of said plurality of edges for maintaining said control plate in either (1) an open or (2) a closed position; b. a film gate supported by said projector comprising a fixed portion and a movable portion, said movable portion being movable between (1) an open position wherein it is spaced from said fixed portion to permit said film material to be readily inserted between or removed from between said movable and said fixed portion or to permit said film material to be readily moved therebetween and (2) a closed position wherein said movable portion is closely adjacent to said fixed portion such that a received film material is urged into an essentially flat plane defined therebetween for projection of images from the film material; and c. linkAge means connecting said control plate and said movable portion of said film gate such that when said control plate is moved to its open position, said movable portion of said film gate is moved to its open position, and when said control plate is moved to its closed position, said movable portion of said film gate is moved to its closed position.

Claim 12

In a projector as set forth in claim 8 wherein said linkage means comprises a slide bar movably supported by the projector, means coupling one end portion of said slide bar to said control plate, and means coupling the other end portion of said slide bar to said movable portion of said film gate to effect pivotal movement of said movable portion of said film gate in response to movement of said slide bar.