Film editing device

Claim 2

In an editing device for inspecting and splicing motion picture film, the combination of: a. a Film editing station including: i. film viewing means; ii. film cutting means; iii. film splicing means; b. a pair of film transporting stations disposed at opposite sides of said film editing station for transporting said film across said film editing station. c. each of said film transporting stations including: i. film winding means; ii. variable speed motor means for driving said winding means at high or low speeds; iii. means for automatically braking said winding means in the event said motor means is deenergized or the film breaks; iv. film slack take-up means; d. means for operating said driving, braking, and takeup means in cooperation with each other for preventing: i. elimination of excess slack in said film; ii. accidental breaking of said film due to excess tensioning; iii. accidental unwinding of a free end of said film in the event of a pre-existing break in said film.

Claim 3

A film editing device according to claim 1, wherein said film editing station includes: a. guide means for receiving said film as it passes across said film editing station; b. means for rapidly moving said guide means with said film held therein between a position over said viewing means and a position at said cutting and splicing means.

Claim 4

A film editing device according to claim 2, wherein said film guide means include brackets mounted for rotation approximately 180* from one of said positions to the other of said positions.

Claim 5

A film editing device according to claim 1, wherein said driving means includes: a. a variable speed motor mounted for movement into and out of frictional engagement with said winding means; b. means for moving said motor into and out of frictional engagement with said winding means.

Claim 6

A film editing device according to claim 1, wherein said braking means includes: a. a brake band engageable with a surface presented by said winding means; b. spring means for normally biasing said brake band into engagement with said surface; c. means for moving said brake band out of engagement with said surface upon actuation of said motor means.

Claim 7

A film editing device according to claim 1, wherein said film slack take-up means includes: a. idler roller means engageable with said film; b. lever means carrying said idler roller means; c. means engageable with and responsive to movement of said lever means for changing the rate of speed of said driving means from a creep speed to a pre-selected higher speed when said film is tensioned about said idler means.

Claim 8

A motion picture film editing device including a film editing station, having film viewing means and film splicing means located adjacent each other, and a pair of film transporting stations disposed on opposite sides of said editing station and having means for transporting film to be edited across said editing station, each of said film transporting stations comprising: a. film winding means including a drum mounted for rotational movement and a film support detachably attached thereto for rotation therewith; b. a variable speed motor for driving said drum; c. motor control means operable to vary the speed of said motor between a low creep speed and a higher regular speed; d. brake means operable between drum engaged and drum disengaged positions; e. film slack take-up means including a film contact element carried on a take-up control lever; f. said take-up control lever being operatively engageable with said motor control means and said brake means and being pivotally mounted: i. for rotation in one direction, responsive to tension on the film at said film contact element, to actuate said motor control means and thereby increase the speed of said motor and also to move said brake means to disengaged position; ii. for rotation in the opposite direction, responsive to no tension on the film at said film contact element, to deactuate said motor control means and thereby decrease the speed of said motor and also to move said brake means to engaged position.

Claim 9

A motion picture film editing device including a film editing station, having film viewing means and film splicing means located adjacent each other, and a pair of film transporting stations disposed on opposite sides of said editing station and having means for transporting film to be edited across said editing station, each of said film transporting stations comprising: a. film winding means including a drum mounted for rotational movement and a film support detachably attached thereto for rotation therewith; b. a variable speed motor for driving said drum; c. motor control means operable to vary the speed of said motor between a low creep speed and a higher regular speed; d. brake means operable between drum engaged and drum disengaged positions; e. film slack take-up means including a film contact element carried on a take-up control lever; f. said take-up control lever being operatively engageable with said motor control means and said brake means and being pivotally mounted: i. for rotation in one direction, responsive to tension on the film at said film contact element, to actuate said motor control means and thereby increase the speed of said motor and also to move said brake means to disengaged position; ii. for rotation in the opposite direction, responsive to no tension on the film at said film contact element, to deactuate said motor control means and thereby decrease the speed of said motor and also to move said brake means to engaged position.

Claim 10

A device according to claim 7, wherein said film editing station includes: a. guide means for receiving said film as it passes across said film editing station; b. means for rapidly moving said guide means with said film held therein between one position over said viewing means and another position at said splicing means.

Claim 11

A device according to claim 8, wherein said film guide means include brackets rotatable approximately 180* from one of said positions to the other of said positions.

Claim 12

A device according to claim 7, wherein said variable speed motor is pivotally mounted for movement into and out of engagement with said drum.

Claim 13

A device according to claim 7, wherein said brake means includes: a. a brake band engageable with a surface presented by the drum of said winding means; b. spring means for normally biasing said brake band into engagement with said surface;

Claim 14

A device according to claim 7, wherein said film contact element includes at least one idler roller rotatably mounted on said take-up control lever.