Adjustable drive mechanism for a motion picture camera

Claim 2

In a motion picture camera adapted to receive either (1) a cartridge having means indicating that the cartridge is of a first type having a film advancing portion requiring application of a first driving force by the camera or (2) a cartridge having means indicating that the cartridge is of a second type having a film advancing portion requiring the application of a second and larger driving force by the camera, the improvement comprising: a. first means supported by said motion picture camera for being rotatably driven about an axis; and b. second means frictionally coupled to said first means, said second means being movable in a direction generally parallel to said axis responsive to the means indicating the type of film cartridge received for adjusting said frictional coupling between said first and second means such that said second means transmits to said film advancing portion (1) the first driving force when a cartridge of the first type is sensed or (2) the second driving force when a cartridge of the second type is sensed.

Claim 3

an extended condition, and

Claim 4

an extended condition, and

Claim 5

a depressed condition; and ii. pressure means coupled to said friction clutch for adjusting the driving force transmitted by said friction clutch responsive to said movement of said sensing means, said pressure means being movable (1) to a first condition when said sensing means is moved to said extended condition wherein said friction clutch is effective to supply the first driving force and (2) to a second condition when said sensing means is moved to said depressed condition whereby said sensing means increases the frictional force created between said first and second members of said clutch such that said friction clutch applies the second driving force to a cartridge.

Claim 6

a depressed condition; and ii. pressure means coupled to said friction clutch for adjusting the driving force transmitted by said friction clutch responsive to said movement of said sensing means, said pressure means being movable (1) to a first condition when said sensing means is moved to said extended condition wherein said friction clutch is effective to supply the first driving force and (2) to a second condition when said sensing means is moved to said depressed condition whereby said sensing means increases the frictional force created between said first and second members of said clutch such that said friction clutch applies the second driving force to a cartridge.

Claim 7

The improvement as set forth in claim 1 wherein said second means includes: a. a pressure member supported in position for cooperating with said first means, said pressure member being movable in a direction generally parallel to said axis between (1) a first position and (2) a second position, said pressure member when in its second position being effective to adjust the frictional coupling between said first and second means so that said second means applies the second driving force to the film advancing portion of the cartridge; b. a detecting member for sensing the means indicating the type of cartridge received, said detecting member being mounted for movement (1) to an extended position in response to receipt of the first type of cartridge in the camera and (2) to a depressed position in response to receipt of the second type of cartridge in the camera; and c. resilient means operatively coupling said pressure member and said detecting member so that movement of said detecting member to its extended position permits said pressure member to remain in said first position and so that movement of said detecting member to its depressed position moves said pressure member to said second position.

Claim 8

In a motion picture camera having drive means and being adapted to receive film cartridges having code means indicating the force required for driving a film advancing portion of the cartridge, the combination comprising: a. a friction clutch having a first portion adapted to be rotatably driven by the camera drive means and having a second portion adjustably and frictionally coupled to said first portion, said second portion being adapted to apply a driving force to the film advancing portion of a cartridge, the driving force transmitted by said second portion being a function of the frictional force created between said first and second portions; b. detectioN means for sensing the means on the cartridge indicating the required driving force, said detection means being movable between (1) an extended condition and (2) a depressed condition; and c. pressure means coupled to said friction clutch for adjusting the driving force transmitted by said friction clutch to a cartridge in response to movement of said detection means, said pressure member being movable (1) to a first condition when said detection means is moved to said extended condition wherein said friction clutch is effective to supply a first driving force and (2) to a second condition when said detection means increases the frictional force created between said first and second portions such that said friction clutch applies a second driving force which is greater than said first driving force.

Claim 9

In a motion picture camera having drive means and being adapted to receive film cartridges having code means indicating the force required for driving a film advancing portion of the cartridge, the combination comprising: a. a friction clutch having a first portion adapted to be rotatably driven by the camera drive means and having a second portion adjustably and frictionally coupled to said first portion, said second portion being adapted to apply a driving force to the film advancing portion of a cartridge, the driving force transmitted by said second portion being a function of the frictional force created between said first and second portions; b. detectioN means for sensing the means on the cartridge indicating the required driving force, said detection means being movable between (1) an extended condition and (2) a depressed condition; and c. pressure means coupled to said friction clutch for adjusting the driving force transmitted by said friction clutch to a cartridge in response to movement of said detection means, said pressure member being movable (1) to a first condition when said detection means is moved to said extended condition wherein said friction clutch is effective to supply a first driving force and (2) to a second condition when said detection means increases the frictional force created between said first and second portions such that said friction clutch applies a second driving force which is greater than said first driving force.

Claim 10

In a motion picture camera having drive means and adapted to receive either (1) a cartridge having means indicating that the cartridge is of a first type having a film advancing portion requiring application of a first driving force by the camera or (2) a cartridge having means indicating that the cartridge is of a second type having a film advancing portion requiring application of a second and greater driving force by the camera, the improvement comprising: a. a friction clutch adjustable for selectively applying either the first driving force or the second driving force to the film advancing portion of a received cartridge, said friction clutch comprising: i. a first member supported by the camera in a position to be rotatably driven by the drive means; and ii. a second member adjustably and frictionally coupled to said first member for applying the first or the second driving force to the film advancing portion of the cartridge, said driving force being a function of the frictional force created between said first and second portions; b. friction increasing means for adjusting said friction clutch to apply the first driving force to the film advancing portion of the cartridge when a first type of cartridge is received by the camera and to apply the second driving force to the film advancing portion of the cartridge when a second type of cartridge is received by the camera, said friction increasing means comprising: i. sensing means for cooperating with the means of a cartridge indicating that the cartridge is of a first or second type, said sensing means being movable between 1. an extended condition, and 2. a depressed condition; and ii. pressure means coupled to said friction clutch for adjusting the driving force transmitted by said friction clutch responsive to said movement of said sensing means, said pressure means being movable (1) to a first condition when said sensing means is moved to said extended condition wherein said friction clutch is effective to supply the first driving force and (2) to a second condition when said sensing means is moved to said depressed condition whereby said sensing means increases the frictional force created between said first and second members of said clutch such that said friction clutch applies the second driving force to a cartridge.

Claim 11

In a motion picture camera having drive means and adapted to receive either (1) a cartridge having means indicating that the cartridge is of a first type having a film advancing portion requiring application of a first driving force by the camera or (2) a cartridge having means indicating that the cartridge is of a second type having a film advancing portion requiring application of a second and greater driving force by the camera, the improvement comprising: a. a friction clutch adjustable for selectively applying either the first driving force or the second driving force to the film advancing portion of a received cartridge, said friction clutch comprising: i. a first member supported by the camera in a position to be rotatably driven by the drive means; and ii. a second member adjustably and frictionally coupled to said first member for applying the first or the second driving force to the film advancing portion of the cartridge, said driving force being a function of the frictional force created between said first and second portions; b. friction increasing means for adjusting said friction clutch to apply the first driving force to the film advancing portion of the cartridge when a first type of cartridge is received by the camera and to apply the second driving force to the film advancing portion of the cartridge when a second type of cartridge is received by the camera, said friction increasing means comprising: i. sensing means for cooperating with the means of a cartridge indicating that the cartridge is of a first or second type, said sensing means being movable between 1. an extended condition, and 2. a depressed condition; and ii. pressure means coupled to said friction clutch for adjusting the driving force transmitted by said friction clutch responsive to said movement of said sensing means, said pressure means being movable (1) to a first condition when said sensing means is moved to said extended condition wherein said friction clutch is effective to supply the first driving force and (2) to a second condition when said sensing means is moved to said depressed condition whereby said sensing means increases the frictional force created between said first and second members of said clutch such that said friction clutch applies the second driving force to a cartridge.

Claim 12

A motion picture camera having a plurality of walls defining a portion of a cartridge chamber adapted to receive either (1) a first cartridge having a film advancing member requiring a first driving force for advancing a film strip supported by the cartridge and having an indicia indicating that the first force is required or (2) a second cartridge having a film advancing member requiring a second and larger driving force for advancing the film supported by the cartridge and having an indicia indicating that the second force is required, said camera comprising: a. a drive member supported by one of the plurality of walls for rotation about an axis, said drive member being engageable with the film advancing member of a received cartridge for supplying either the first or Second driving force to the film advancing portion of a received cartridge; b. drive means rotatably supported in the camera at a spaced distance from said drive member; c. friction means positioned between said drive member and said drive means and frictionally coupling said drive member and said drive means for transmitting a force to said drive member from said drive means; d. first means supported by said drive member in a position displaced from said axis, said first means for engaging said friction means for increasing the driving force transmitted to said drive member by said drive means through said friction means, said first means being movable between (1) a first position wherein the first force is supplied to the film advancing member of a received first cartridge and (2) a second position wherein the second force is supplied to the film advancing member of a received second cartridge; e. second means associated with said first means, said second means for cooperating with the indicia to determine whether the first or the second force is required for advancing the film, said second member being movable between (1) a first position when it is in contact with a first cartridge and (2) a second position when it is in contact with said second cartridge; and f. third means coupling said first and second means, said means suitable for moving said first means to its second position responsive to said second means being moved to its second position.

Claim 13

A motion picture camera having a plurality of walls defining a portion of a cartridge chamber adapted to receive either (1) a first cartridge having a film advancing member requiring a first driving force for advancing a film strip supported by the cartridge and having an indicia indicating that the first force is required or (2) a second cartridge having a film advancing member requiring a second and larger driving force for advancing the film supported by the cartridge and having an indicia indicating that the second force is required, said camera comprising: a. a drive member supported by one of the plurality of walls for rotation about an axis, said drive member being engageable with the film advancing member of a received cartridge for supplying either the first or Second driving force to the film advancing portion of a received cartridge; b. drive means rotatably supported in the camera at a spaced distance from said drive member; c. friction means positioned between said drive member and said drive means and frictionally coupling said drive member and said drive means for transmitting a force to said drive member from said drive means; d. first means supported by said drive member in a position displaced from said axis, said first means for engaging said friction means for increasing the driving force transmitted to said drive member by said drive means through said friction means, said first means being movable between (1) a first position wherein the first force is supplied to the film advancing member of a received first cartridge and (2) a second position wherein the second force is supplied to the film advancing member of a received second cartridge; e. second means associated with said first means, said second means for cooperating with the indicia to determine whether the first or the second force is required for advancing the film, said second member being movable between (1) a first position when it is in contact with a first cartridge and (2) a second position when it is in contact with said second cartridge; and f. third means coupling said first and second means, said means suitable for moving said first means to its second position responsive to said second means being moved to its second position.

Claim 14

A motion picture camera as set forth in claim 5 wherein (1) said first means is substantially a tubular-shaped member having an end portion engageable with said friction means, said first means being supported for movement between said first and second positions by said drive member, (2) said second means is substantially a tubular-shaped member adapted to cooperate with said first means in a telescopic fashion and (3) said third means comprises a coil spring interposed between said first and second means.

Claim 15

In a motion picture camera adapted to receive a film cartridge having means indicating the cartridge is either a first type having a film advancing portion requiring application of a first driving force or a second type having a film advancing portion requiring the application of a second and larger driving force, the improvement comprising: a. first means for selectively applying either the first or the second driving force to the film advancing portion of a received cartridge, said first means including a first member rotatably supported by said motion picture camera, a second member rotatably and eccentrically supported with respect to said first member, said second member being engageable with the film advancing portion of the received film cartridge to apply the first or second driving force to the film advancing portion of the cartridge, and a third member frictionally coupling said first and second members; and b. second means for cooperating with the indicating means of a received film cartridge for adjusting said first means to apply the first driving force when a cartridge of the first type is sensed or the second driving force when a cartridge of the second type is sensed, said second means including a pressure member adapted to cooperate through said third member to change the frictional coupling between said first and second members, a detecting member for sensing the means indicating the type of cartridge, said detecting member being movable to an extended position when the first type of cartridge is received in the camera and to a depressed position when the second type of cartridge is received in the camera, and resilient means coupling said pressure member and said detecting member so that movement of said detecting member to its extended position permits said pressure member to remain in said first position and so that movement of said detecting member to its depressed position moves said pressure member to its second pOsition.

Claim 16

In a motion picture camera adapted to receive a film cartridge having means indicating the cartridge is either a first type having a film advancing portion requiring application of a first driving force or a second type having a film advancing portion requiring the application of a second and larger driving force, the improvement comprising: a. first means for selectively applying either the first or the second driving force to the film advancing portion of a received cartridge, said first means including a first member rotatably supported by said motion picture camera, a second member rotatably and eccentrically supported with respect to said first member, said second member being engageable with the film advancing portion of the received film cartridge to apply the first or second driving force to the film advancing portion of the cartridge, and a third member frictionally coupling said first and second members; and b. second means for cooperating with the indicating means of a received film cartridge for adjusting said first means to apply the first driving force when a cartridge of the first type is sensed or the second driving force when a cartridge of the second type is sensed, said second means including a pressure member adapted to cooperate through said third member to change the frictional coupling between said first and second members, a detecting member for sensing the means indicating the type of cartridge, said detecting member being movable to an extended position when the first type of cartridge is received in the camera and to a depressed position when the second type of cartridge is received in the camera, and resilient means coupling said pressure member and said detecting member so that movement of said detecting member to its extended position permits said pressure member to remain in said first position and so that movement of said detecting member to its depressed position moves said pressure member to its second pOsition.

Claim 17

For a motion picture camera, drive means adapted to provide a driving force to a film advancing portion of a received cartridge responsive to indicating means of the cartridge, said drive means comprising: a. first means supported by said apparatus, said first means adapted to be rotatably driven about an axis; and b. second means for transmitting the driving force to the film advancing portion of a received film cartridge, said second means being frictionally coupled to said first means and being displaceable responsive to the indicating means of a received cartridge in a direction generally parallel to said axis for altering the frictional coupling between said first and second means thereby controlling the driving force provided to the film advancing portion of the cartridge.

Claim 18

For a motion picture camera, drive means adapted to provide a driving force to a film advancing portion of a received cartridge responsive to indicating means of the cartridge, said drive means comprising: a. first means supported by said apparatus, said first means adapted to be rotatably driven about an axis; and b. second means for transmitting the driving force to the film advancing portion of a received film cartridge, said second means being frictionally coupled to said first means and being displaceable responsive to the indicating means of a received cartridge in a direction generally parallel to said axis for altering the frictional coupling between said first and second means thereby controlling the driving force provided to the film advancing portion of the cartridge.

Claim 19

The drive means as set forth in claim 8 wherein said second means includes: a. a pressure member adapted to be displaceable in a direction generally parallel to said axis of rotation to cooperate with said first means to alter the frictional coupling between said first and second means; b. sensing means for cooperating with the indicating means of a received film cartridge and being displaceable thereby between an extended position and a depressed position; and c. resilient means coupling said pressure member and said sensing means such that movement of said sensing means from its extended position to its depressed position changes said pressure member from a first condition wherein a first frictional coupling is created between said first and second means and a second condition wherein a different frictional coupling is created between said first and second means.

Claim 20

In a motion picture camera adapted to receive a film cartridge having means indicating the driving force required by a film advancing portion of the cartridge for advancing a film strip in the cartridge, drive means comprising: a. first means supported by said camera for rotation about an axis; b. second means adapted to be frictionally engageable with said first means, said second means being displaceable in a direction parallel to said axis between a first condition wherein a first level of force is created between said first and second means and a second condition wherein a second and different level of force is created between said first and second means; and c. third means coupled to said second means for transmitting a driving force to the film advancing portion of a received cartridge, said driving force being directly proportional to the level of force created between said first and second means.

Claim 21

In a motion picture camera adapted to receive a film cartridge having means indicating the driving force required by a film advancing portion of the cartridge for advancing a film strip in the cartridge, drive means comprising: a. first means supported by said camera for rotation about an axis; b. second means adapted to be frictionally engageable with said first means, said second means being displaceable in a direction parallel to said axis between a first condition wherein a first level of force is created between said first and second means and a second condition wherein a second and different level of force is created between said first and second means; and c. third means coupled to said second means for transmitting a driving force to the film advancing portion of a received cartridge, said driving force being directly proportional to the level of force created between said first and second means.