Motion picture camera

Claim 2

In a motion picture camera, a combination comprising a housing; a film magazine removably received in said housing and having takeup means rotatable only in a given direction to thereby collect exposed film and supply means for paying out unexposed film, said magazine defining a chamber for accommodation of film which is being paid out by said supply means while said takeup means is at a standstill; film transporting means including motor means mounted in said housing; rotary motion transmitting means mounted in said housing and engaging with the takeup means of said magazine; a power train connecting said motor means with said motion transmitting means and including clutch means for enabling said motor means to operate while said motion transmitting means is held against rotation whereby said film transporting means draws film from said supply means while said takeup means is at a standstill and the thus withdrawn film accumulates in said chamber; timer means for automatically arresting said motor means with a predetermined delay to thereby interrupt the transport of film and to thus terminate the accumulation of uncollected film in said chamber; blocking means actuable to hold said motion transmitting means against rotation while said motor means is in operation; and common actuating means for said blocking means and said timer means.

Claim 3

A combination as defined in claim 1, wherein said actuating means is movable between an operative position in which it actuates said blocking means and said timer means and an inoperative position, and further comprising means for biasing said actuating means to inoperative position.

Claim 4

A combination as defined in claim 2, further comprising shutter means, an operative connection between said shutter means and said motor means, shutter release means operative to start said motor means and to simultaneously release said shutter means, and locking means for holding said actuating means in operative position between successive operations of said release means.

Claim 5

A combination as defined in claim 3, further comprising disengaging means for automatically disengaging said locking means from said actuating means in response to operation of said release means.

Claim 6

In a motion picture camera, a combination comprising a housing arranged to accommodate film magazines of the type having takeup means rotatable in a given direction to thereby collect exposed film; film transporting means including motor means mounted in said housing; rotary motion transmitting means mounted in said housing and arranged to engage with the takeup means of a magazine on insertion of such magazine into said housing; a power train connecting said motor means with said motion transmitting means and including clutch means permitting operation of said motor means while said motion transmitting means is held against rotation; timer means actuatable to automatically arrest said motor means with a predetermined delay to thereby interrupt the transport of film; blocking means actuatable to hold said motion transmitting means against rotation while said motor means is in operation; common actuating means for said blocking means and said timer means, said actuating means being movable between an operative position in which it actuates said blocking means and said timer means an inoperative position; means for biasing said actuating means to inoperative position; shutter means; an operative connection between said shutter means and said motor means; shutter release means operative to start said motor means and to simultaneously release said shutter means; locking means for holding said actuating means in operative position between successive operations of said release means; and disengaging means for automatically disengaging said locking means from said actuating means in response to operation of said release means, said locking means comprising cam means and said disengaging means comprising follower means which can bypass said cam means in response to movement of said release means to an idle position but disengages said locking means from said actuating means by way of said cam means in response to operation of said release means.

Claim 7

In a motion picture camera, a combination comprising a housing arranged to accommodate film magazines of the type having takeup means rotatable in a given direction to thereby collect exposed film; film transporting means including motor means mounted in said housing; rotary motion transmitting means mounted in said housing and arranged to engage with the takeup means of a magazine on insertion of such magazine into said housing; a power train connecting said motor means with said motion transmitting means and including clutch means permitting operation of said motor means while said motion transmitting means is held against rotation; timer means actuatable to automatically arrest said motor means with a predetermined delay to thereby interrupt the transport of film; blocking means actuatable to hold said motion transmitting means against rotation while said motor means is in operation; common actuating means for said blocking means and said timer means, said actuating means being movable between an operative position in which it actuates said blocking means and said timer means an inoperative position; means for biasing said actuating means to inoperative position; shutter means; an operative connection between said shutter means and said motor means; shutter release means operative to start said motor means and to simultaneously release said shutter means; locking means for holding said actuating means in operative position between successive operations of said release means; and disengaging means for automatically disengaging said locking means from said actuating means in response to operation of said release means, said locking means comprising cam means and said disengaging means comprising follower means which can bypass said cam means in response to movement of said release means to an idle position but disengages said locking means from said actuating means by way of said cam means in response to operation of said release means.

Claim 8

In a motion picture camera, a combination comprising a housing arranged to accommodate film magazines of the type having takeup means rotatable in a given direction to thereby collect exposed film; film transporting means including motor means mounted in said housing; rotary motion transmitting means mounted in said housing and arranged to engage with the takeup means of a magazine on insertion of such magazine into said housing; a power train connecting said motor means with said motion transmitting mean and including clutch means permitting operation of said motor means while said motion transmitting means is held against rotation; timer means actuatable to automatically arrest said motor means with a predetermined delay to thereby interrupt the transport of film; blocking means actuatable to hold said motion transmitting means against rotation while said motor means is in operation; and common actuating means for said blocking means and said tImer means, said actuating means comprising a lever pivotable about a predetermined axis and having a first arm provided with a wheel which receives torque from said power train and a second arm a portion of which constitutes said blocking means, said lever being pivotable by hand from an inoperative position to an operative position in which said wheel actuates said timer means and said blocking means holds said motion transmitting means.

Claim 9

In a motion picture camera, a combination comprising a housing arranged to accommodate film magazines of the type having takeup means rotatable in a given direction to thereby collect exposed film; film transporting means including motor means mounted in said housing; rotary motion transmitting means mounted in said housing and arranged to engage with the takeup means of a magazine on insertion of such magazine into said housing; a power train connecting said motor means with said motion transmitting mean and including clutch means permitting operation of said motor means while said motion transmitting means is held against rotation; timer means actuatable to automatically arrest said motor means with a predetermined delay to thereby interrupt the transport of film; blocking means actuatable to hold said motion transmitting means against rotation while said motor means is in operation; and common actuating means for said blocking means and said tImer means, said actuating means comprising a lever pivotable about a predetermined axis and having a first arm provided with a wheel which receives torque from said power train and a second arm a portion of which constitutes said blocking means, said lever being pivotable by hand from an inoperative position to an operative position in which said wheel actuates said timer means and said blocking means holds said motion transmitting means.

Claim 10

A combination as defined in claim 6, wherein said timer means comprises a second wheel which is rotated by said first mentioned wheel in operative position of said lever and is arranged to effect stoppage of said motor means in response to rotation through a predetermined angle.

Claim 11

A combination as defined in claim 6, wherein said power train further comprises a gear which receives torque by way of said clutch means and rotates said motion transmitting means, said blocking means engaging with and holding said gear against rotation in response to movement of said lever to operative position.

Claim 12

A combination as defined in claim 8, wherein said power train further comprises a second gear which drives said clutch means and said wheel.

Claim 13

A combination as defined in claim 1, wherein said motor means is a reversible electric motor and wherein said timer means is arranged to set the motor for operation in reverse in response to stoppage of the motor with said delay, and further comprising operating means for starting said motor in reverse to transport the film in said chamber backwards during an interval corresponding to said delay.