Control mechanism for a web transporting device

Claim 2

A control mechanism for a motion picture prOjector, said control mechanism comprising: a. first and second spindles rotatably supported by said motion picture projector; b. first drive means adapted to cooperate with and to rotatably drive said first spindle; c. second drive means adapted to cooperate with and to rotatably drive said second spindle, said second drive means including (1) clutch means including i. a rotatably-powered driving member; and ii. a driven member frictionally coupled to said driving member such that said driven member is adapted to transmit an increased driving torque to said second spindle as a function of an increased force applied to said driver member; and iii. force applying means movable between a first condition wherein said force applying means is effective to apply an increased force to said driven member and a second condition wherein said force applying means is restrained from applying an increased force; d. first and second brake means adapted to cooperate with and to brake rotation of said first and second spindles, respectively; and e. control means adapted to control said first and second drive means, said first and second brake means, and said force applying means of said clutch means, said control means being positionable between (1) a still position wherein said first and second brake means cooperate with said first and second spindles respectively to restrain said spindles from rotation, (2) a project position wherein said second drive means rotatably drives said second spindle at a first rate, (3) a rewind position wherein said first drive means cooperates with said first spindle and rotatably drives said first spindle, and (4) a fast forward position wherein said second drive means rotatably drives said second spindle at a second and greater rate.

Claim 3

A mechanism for sequentially braking first and second spindles of a motion picture projector, said mechanism comprising: a. brake means adapted to cooperate with said first spindle to brake rotation of said first spindle; b. a control plate movably secured to said projector, said control plate supporting said brake means for movement between (1) a first position wherein said brake means is effective to brake rotation of said first spindle and (2) a second position wherein said brake means is restrained from braking rotation of said first spindle; c. a cam member movably mounted to said projector; d. a brake member movably mounted to said projector and operatively coupled to said cam member, said brake member being movable by said cam member between (1) a first position wherein it is effective to brake rotation of said second spindle and (2) a second position wherein it is restrained from braking rotation of said second spindle; and e. control means operatively coupling said control plate and said cam member for movement to (1) a first condition wherein said brake means is moved to its first position to initiate braking of said first spindle sequentially before said brake member is moved to its first position to brake rotation of said second spindle and to (2) a second condition wherein said cam member moves said brake member to its first position to initiate braking of said second spindle sequentially before said brake means is moved to its first position to brake rotation of said first spindle.

Claim 4

A mechanism for sequentially braking first and second spindles of a motion picture projector, said mechanism comprising: a. brake means adapted to cooperate with said first spindle to brake rotation of said first spindle; b. a control plate movably secured to said projector, said control plate supporting said brake means for movement between (1) a first position wherein said brake means is effective to brake rotation of said first spindle and (2) a second position wherein said brake means is restrained from braking rotation of said first spindle; c. a cam member movably mounted to said projector; d. a brake member movably mounted to said projector and operatively coupled to said cam member, said brake member being movable by said cam member between (1) a first position wherein it is effective to brake rotation of said second spindle and (2) a second position wherein it is restrained from braking rotation of said second spindle; and e. control means operatively coupling said control plate and said cam member for movement to (1) a first condition wherein said brake means is moved to its first position to initiate braking of said first spindle sequentially before said brake member is moved to its first position to brake rotation of said second spindle and to (2) a second condition wherein said cam member moves said brake member to its first position to initiate braking of said second spindle sequentially before said brake means is moved to its first position to brake rotation of said first spindle.

Claim 5

A motion picture projector having first and second spindles adapted to receive film reels for transporting a film strip therebetween, said projector comprising: a. brake means adapted to cooperate with said first spindle to brake rotation of said first spindle; b. a control plate movably secured to said projector, said control plate supporting said brake means for movement between (1) a first position wherein said brake means is effective to brake rotation of said first spindle and (2) a second position wherein said brake means is restrained from braking rotation of said fiRst spindle; c. a cam member movably mounted to said projector; d. a brake member movably mounted to said projector at a point located along a radius extending from said second spindle, said brake member being operatively coupled to said cam member for movement between (1) a first position wherein said brake member is effective to contact said reel received by said second spindle at a point which is removed from said radius, said braking member being effective to apply a first braking force when said brake member contacts said reel as it is being driven in a first direction and being effective to apply a second and greater braking force when said brake member contacts said reel as it is being rotated in a second direction and (2) a second position wherein said brake member is restrained from braking rotation of said second spindle; and e. control means operatively coupling said control plate and said cam member for movement to (1) a first condition wherein said brake means is moved to its first position to initiate braking of said first spindle sequentially before said brake member is moved to its first position to apply said first braking force to brake rotation of said second spindle and (2) a second condition wherein said cam member moves said brake member to its first position to apply said second braking force to initiate braking of said second spindle sequentially before said brake means is moved to its first position to brake rotation of said first spindle.

Claim 6

A motion picture projector having first and second spindles adapted to receive film reels for transporting a film strip therebetween, said projector comprising: a. brake means adapted to cooperate with said first spindle to brake rotation of said first spindle; b. a control plate movably secured to said projector, said control plate supporting said brake means for movement between (1) a first position wherein said brake means is effective to brake rotation of said first spindle and (2) a second position wherein said brake means is restrained from braking rotation of said fiRst spindle; c. a cam member movably mounted to said projector; d. a brake member movably mounted to said projector at a point located along a radius extending from said second spindle, said brake member being operatively coupled to said cam member for movement between (1) a first position wherein said brake member is effective to contact said reel received by said second spindle at a point which is removed from said radius, said braking member being effective to apply a first braking force when said brake member contacts said reel as it is being driven in a first direction and being effective to apply a second and greater braking force when said brake member contacts said reel as it is being rotated in a second direction and (2) a second position wherein said brake member is restrained from braking rotation of said second spindle; and e. control means operatively coupling said control plate and said cam member for movement to (1) a first condition wherein said brake means is moved to its first position to initiate braking of said first spindle sequentially before said brake member is moved to its first position to apply said first braking force to brake rotation of said second spindle and (2) a second condition wherein said cam member moves said brake member to its first position to apply said second braking force to initiate braking of said second spindle sequentially before said brake means is moved to its first position to brake rotation of said first spindle.

Claim 7

A mechanism for selectively controlling the movement of a received web of material, the mechanism comprising: a. a frame; b. a first spindle rotatably supported by said frame, said first spindle being adapted to receive said web material; c. drive means engageable with said first spindle for rotatably driving said first spindle; d. brake means engageable with said first spindle for braking rotation of said first spindle; e. support means movably secured to said frame, said support means for supporting said drive means and said brake means for movement between (1) a first position wherein said drive means engages said first spindle to rotatably drive said first spindle, (2) a second position wherein said brake means engages said first spindle to restrain rotation of said first spindle, and (3) a third position wherein said drive means and said brake means are restrained from engaging said first spindle; f. a second spindle rotatably supported by said frame at a space distance from said first spindle, said second spindle being adapted to receive and rotatably drive a reel for web material, said second spindle being adapted to supply an increased driving torque for driving said reel as an increased force is applied to said second spindle; g. force applying means supported by said frame for movement between (1) a first condition wherein said force applying means is effective to apply an increased force to said second spindle to substantially increase the driving torque supplied by said second spindle and (2) a second condition wherein said force applying means is restrained from applying said increased force to said second spindle; and h. control means coupling said support means and said force applying means for moving said support means between either its first or second positions when said force applying means is in its second condition and for moving said support means to its third position when said force applying means is moved to its first condition.

Claim 8

A mechanism for selectively controlling the movement of a received web of material, the mechanism comprising: a. a frame; b. a first spindle rotatably supported by said frame, said first spindle being adapted to receive said web material; c. drive means engageable with said first spindle for rotatably driving said first spindle; d. brake means engageable with said first spindle for braking rotation of said first spindle; e. support means movably secured to said frame, said support means for supporting said drive means and said brake means for movement between (1) a first position wherein said drive means engages said first spindle to rotatably drive said first spindle, (2) a second position wherein said brake means engages said first spindle to restrain rotation of said first spindle, and (3) a third position wherein said drive means and said brake means are restrained from engaging said first spindle; f. a second spindle rotatably supported by said frame at a space distance from said first spindle, said second spindle being adapted to receive and rotatably drive a reel for web material, said second spindle being adapted to supply an increased driving torque for driving said reel as an increased force is applied to said second spindle; g. force applying means supported by said frame for movement between (1) a first condition wherein said force applying means is effective to apply an increased force to said second spindle to substantially increase the driving torque supplied by said second spindle and (2) a second condition wherein said force applying means is restrained from applying said increased force to said second spindle; and h. control means coupling said support means and said force applying means for moving said support means between either its first or second positions when said force applying means is in its second condition and for moving said support means to its third position when said force applying means is moved to its first condition.

Claim 9

The mechanism as set forth in claim 4 further comprising: a. a brake member supported by said frame for movement between (1) a first position wherein said brake member cooperates with said reel received by said second spindle to restrain rotation of said second spindle and (2) a second position wherein said brake member is restrained from braking the rotation of said second spindle; and b. cam means coupling said force applying meAns and said brake member whereby movement of said force applying means to its first condition is effective to move said brake member to its second position.

Claim 10

In a projector, an improvement for selectively controlling movement of a web material along a path which leads between first and second rotatable spindles of the projector, said second spindle including a rotatably-powered driving member and a reel-supporting driven member adapted to receive and rotatably drive the web material as a function of the radial force applied to said driven member of said second spindle, said improvement comprising: a. driving means engageable with said first spindle for rotatably driving said first spindle; b. braking means engageable with said second spindle for braking rotation of said first spindle; c. a plate pivotably mounted to said projector, said plate supporting said driving and braking means for movement between (1) a first position wherein said drive means rotatably drives said first spindle, (2) a second position wherein said brake means restrains said first spindle from being rotatably driven, and (3) a third position wherein said driving and braking means are disengaged from said first spindle; d. force applying means movable between (1) a first condition wherein it is effective to apply a radial force to said reel-supporting driven member of said second spindle to substantially increase the driving force transmitted by said driven member, and (2) a second condition wherein it is restrained from applying a radial force to said driven member of said second spindle; and e. control means coupled to said plate and to said force applying means for moving said plate between said first and second positions when said force applying means is moved to said second condition and for moving said plate to said third position when said force applying means is moved to said first condition.

Claim 11

In a projector, an improvement for selectively controlling movement of a web material along a path which leads between first and second rotatable spindles of the projector, said second spindle including a rotatably-powered driving member and a reel-supporting driven member adapted to receive and rotatably drive the web material as a function of the radial force applied to said driven member of said second spindle, said improvement comprising: a. driving means engageable with said first spindle for rotatably driving said first spindle; b. braking means engageable with said second spindle for braking rotation of said first spindle; c. a plate pivotably mounted to said projector, said plate supporting said driving and braking means for movement between (1) a first position wherein said drive means rotatably drives said first spindle, (2) a second position wherein said brake means restrains said first spindle from being rotatably driven, and (3) a third position wherein said driving and braking means are disengaged from said first spindle; d. force applying means movable between (1) a first condition wherein it is effective to apply a radial force to said reel-supporting driven member of said second spindle to substantially increase the driving force transmitted by said driven member, and (2) a second condition wherein it is restrained from applying a radial force to said driven member of said second spindle; and e. control means coupled to said plate and to said force applying means for moving said plate between said first and second positions when said force applying means is moved to said second condition and for moving said plate to said third position when said force applying means is moved to said first condition.

Claim 12

In a motion picture projector having first and second spindles rotatably supported by a housing, said spindles for receiving and transporting a film strip therebetween, the improvement comprising: a. a control plate movably supported by said housing; b. drive means supported by said control plate for movement between (1) a first position wherein said drive means engages said first spindle for driving said first spindle and (2) a second position wherein said drive means is restrained from driving said first spindle; c. brake means supported by said control plate for movement between (1) a first position wherein said brake means engages said first spindle for braking rotation of said first spindle, and (2) to a second position wherein said braking means is restrained from braking rotation of said first spindle; d. clutch means operatively coupled to said second spindle, said clutch means comprising a rotatably-powered driving member and a driven member which is frictionally coupled to said driving member, said clutch means being adapted to transmit an increased driving torque to said second spindle as a function of an increased force applied to said driven member; e. force applying means supported by said housing for movement between (1) a first condition wherein it is effective to apply an increased force to said driven portion of said clutch means and (2) a second condition wherein it is restrained from applying said increased force; f. a brake member operatively coupled to said force applying means, said brake member movable by said force applying means between (1) a first position wherein said brake member is effective to brake rotation of said second spindle and (2) a second position wherein said brake member is restrained from braking rotation of said second spindle; and g. control means supported by said housing, said control means coupling said control plate and said force applying means for moving said control plate and said force applying means for movement beTwen (1) a still position wherein said brake means is in its first position, said force applying means is in its second condition, and said brake member is in its first position, (2) a project position wherein said brake means is in its second position, said force applying means is in its second condition and said brake member is in its second position, (3) a rewind position wherein said brake means is in its second position, said force applying means is in its second condition and said brake member is in its second position, and (4) a fast forward position wherein said brake means is in its second position, said force applying means is in its first condition and said brake member is in its second position.

Claim 13

In a motion picture projector having first and second spindles rotatably supported by a housing, said spindles for receiving and transporting a film strip therebetween, the improvement comprising: a. a control plate movably supported by said housing; b. drive means supported by said control plate for movement between (1) a first position wherein said drive means engages said first spindle for driving said first spindle and (2) a second position wherein said drive means is restrained from driving said first spindle; c. brake means supported by said control plate for movement between (1) a first position wherein said brake means engages said first spindle for braking rotation of said first spindle, and (2) to a second position wherein said braking means is restrained from braking rotation of said first spindle; d. clutch means operatively coupled to said second spindle, said clutch means comprising a rotatably-powered driving member and a driven member which is frictionally coupled to said driving member, said clutch means being adapted to transmit an increased driving torque to said second spindle as a function of an increased force applied to said driven member; e. force applying means supported by said housing for movement between (1) a first condition wherein it is effective to apply an increased force to said driven portion of said clutch means and (2) a second condition wherein it is restrained from applying said increased force; f. a brake member operatively coupled to said force applying means, said brake member movable by said force applying means between (1) a first position wherein said brake member is effective to brake rotation of said second spindle and (2) a second position wherein said brake member is restrained from braking rotation of said second spindle; and g. control means supported by said housing, said control means coupling said control plate and said force applying means for moving said control plate and said force applying means for movement beTwen (1) a still position wherein said brake means is in its first position, said force applying means is in its second condition, and said brake member is in its first position, (2) a project position wherein said brake means is in its second position, said force applying means is in its second condition and said brake member is in its second position, (3) a rewind position wherein said brake means is in its second position, said force applying means is in its second condition and said brake member is in its second position, and (4) a fast forward position wherein said brake means is in its second position, said force applying means is in its first condition and said brake member is in its second position.

Claim 14

The improvement as set forth in claim 7 wherein said force applying means includes a cam member and wherein said brake lever includes a cam follower adapted to cooperate with said cam member, said cam member and said cam follower operatively coupling said brake lever and said control lever through said force applying means such that movement of said control lever is effective to move said brake lever between its first and second positions.

Claim 15

In a motion picture projector, the combination comprising: a. a frame; b. first and second spindles supported by said frame, said first and second spindles being adapted to receive film reels; c. a generally triangular shaped control plate pivotally supported by said frame, said control plate having first, second and third corners; d. drive means supported adjacent said first corner of said control plate, said drive means being movable by said control plate between (1) a first position wherein it is in driving contact with said first spindle for rotatably driving said first spindle and (2) a second position wherein said drive means is ineffective to drive said first spindle; e. brake means supported adjacent said second corner of said control plate, said brake means being movable between (1) a first position wherein said brake means communicates with said first spindle to brake rotation of said first spindle and (2) a second position wherein said brake means ineffective to brake rotation of said first spindle; f. clutch means coupled to said second spindle, said clutch means having a drive portion and a drive portion which is frictionally coupled to said drive portion, said clutch means being suitable to provide an increased driving torque to said second spindle as an increased radial force is applied to said driven portion of said clutch means; g. force applying means supported by said frame, said force applying means being movable between (1) a first position for applying a radial force to said driven portion of said clutch and (2) a second position wherein said force applying means is restrained from applying a radial force to said driven portion of said clutch; and h. control means coupled to said forced applying means to move said force applying means between its first and second positions and said control means being coupled to said third corner of said control plate for moving said control plate such that said drive means and said brake means are moved between their respective first and second positions.

Claim 16

In a motion picture projector, the combination comprising: a. a frame; b. first and second spindles supported by said frame, said first and second spindles being adapted to receive film reels; c. a generally triangular shaped control plate pivotally supported by said frame, said control plate having first, second and third corners; d. drive means supported adjacent said first corner of said control plate, said drive means being movable by said control plate between (1) a first position wherein it is in driving contact with said first spindle for rotatably driving said first spindle and (2) a second position wherein said drive means is ineffective to drive said first spindle; e. brake means supported adjacent said second corner of said control plate, said brake means being movable between (1) a first position wherein said brake means communicates with said first spindle to brake rotation of said first spindle and (2) a second position wherein said brake means ineffective to brake rotation of said first spindle; f. clutch means coupled to said second spindle, said clutch means having a drive portion and a drive portion which is frictionally coupled to said drive portion, said clutch means being suitable to provide an increased driving torque to said second spindle as an increased radial force is applied to said driven portion of said clutch means; g. force applying means supported by said frame, said force applying means being movable between (1) a first position for applying a radial force to said driven portion of said clutch and (2) a second position wherein said force applying means is restrained from applying a radial force to said driven portion of said clutch; and h. control means coupled to said forced applying means to move said force applying means between its first and second positions and said control means being coupled to said third corner of said control plate for moving said control plate such that said drive means and said brake means are moved between their respective first and second positions.

Claim 17

The combination as set forth in claim 9 wherein said force applying means comprises: a. a support member movably supported by said frame; b. a roller member rotatably supported by said support member, said roller member being adapted to rotatably engage said driven portion of said clutch means for applying a radial force to said driven portion; and c. a cam member supported by said support member.

Claim 18

The combination as set forth in claim 10 further comprising a brake member supported by said frame for movement between (1) a first position wherein said brake member is effective to engage a received reel on said second spindle for braking rotation of said second spindle, and (2) a second position wherein said brake member is restrained from braking rotation of said second spindle, said brake member being movable to said second position responsive to movement of said cam member.

Claim 19

A transport mechanism for web material, said transport mechanism comprising: a. a frame; b. a pair of spaced-apart spindles rotably supported by said frame, one of said spindles being adapted to support a reel which functions as a supply reel and the other spindle being adapted to support a reel which functions as a take-up reel; c. drive means for each of said spindles; d. brake means operatively associated with each of said spindles; and e. control means operatively coupled to said brake means, said control means being adapted to actuate said brake means in sequence to brake rotation of said spindles, said brake means actuated first in the sequence being self energizable.

Claim 20

A transport mechanism for web material, said transport mechanism comprising: a. a frame; b. a pair of spaced-apart spindles rotably supported by said frame, one of said spindles being adapted to support a reel which functions as a supply reel and the other spindle being adapted to support a reel which functions as a take-up reel; c. drive means for each of said spindles; d. brake means operatively associated with each of said spindles; and e. control means operatively coupled to said brake means, said control means being adapted to actuate said brake means in sequence to brake rotation of said spindles, said brake means actuated first in the sequence being self energizable.