Motion-picture camera

Claim 2

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and a plurality of additional positions in each of which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; and trigger means movable from an inoperative to an operative position to therebY effect the energization of said electromagnet means by way of said release means, said drive means performing a single operation is response to movement of said trigger means to said operative position in one of said additional positions of said selector means and said drive performing a succession of operations at variable intervals in response to movement of said trigger means to said operative position in another of said additional positions of said selector means, said release means further comprising regulator means arranged to temporarily energize said electromagnet means in each additional position of said selector means on movement of said trigger means to said operative position.

Claim 3

A combination as defined in claim 1, wherein said regulator means comprises pulse shaper means operative to effect a single energization of said electromagnet means in the first additional position of said selector means and adjustable timer means for operating said pulse shaper means at selected intervals in the second additional position of said selector means on movement of said trigger means to operative position.

Claim 4

A combination as defined in claim 2, wherein said timer means and said pulse shaper means comprise electronic components.

Claim 5

A combination as defined in claim 2, wherein said timer means comprises an unstable multivibrator arranged to produce signals for operation of said pulse shaper means, and means for varying the frequency of such signals.

Claim 6

A combination as defined in claim 4, wherein the means for varying the frequency of said signals comprises variable resistor means.

Claim 7

A combination as defined in claim 2, wherein said timer means comprises a plurality of switches and said selector means comprises means for connecting selected switches in circuit with said electromagnet means, and driven actuating means for said switches.

Claim 8

A combination as defined in claim 6, wherein said actuating means comprises a plurality of cams.

Claim 9

A combination as defined in claim 6, wherein said actuating means comprises cam means, one for each of said switches and each arranged to close the respective switch at different intervals.

Claim 10

A combination as defined in claim 8, wherein said timer means further comprises a motor arranged to drive said cam means by way of at least one transmission.

Claim 11

A combination as defined in claim 9, wherein each of said cam means comprises a disk cam and wherein each of said cams is arranged to rotate at a different speed in response to operation of said last-mentioned motor.

Claim 12

A combination as defined in claim 8, wherein said timer means further comprises a motor rotary carrier means driven by said last-mentioned motor, each of said cam means comprising an annulus of cams on said carrier means and the cams of each annulus being located at different distances from each other.

Claim 13

A combination as defined in claim 6, wherein said timer means further comprises an electric motor for driving said actuating means and means for varying the speed of said last-mentioned motor.

Claim 14

A combination as defined in claim 12, wherein the means for varying the speed of said last-mentioned motor comprises variable resistor means in the circuit of such motor.

Claim 15

A combination as defined in claim 2, wherein said pulse shaper means comprises an electronic switch.

Claim 16

A combination as defined in claim 2, wherein said selector means comprises a single selector switch movable between three positions which respectively correspond to the first position, to the first additional position and to the second additional position of said selector means, said timer means comprising an electronic timer arranged to produce a succession of signals for operation of said pulse shaper means and variable resistor means adjustable by said selector switch to thereby change the intervals between successive signals produced by said timer.

Claim 17

In a motion-picture camera, a combination comprising a rotary shutter; a Drive including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit operation of said drive, said blocking means normally tending to move from said unblocking to said blocking position; electromagnet means energizable to move said blocking means from said blocking position to said unblocking position and to simultaneously and invariably complete the circuit of said motor so that the motor circuit is completed whenever and as long as said electromagnet means is energized; control means for regulating the energization of said electromagnet means for the desired mode of operation of said drive including selector means movable between a first position in which said electromagnet means is set for continuous energization so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said electromagnet means is set for intermittent energizations so that the shutter admits scene light for an individual exposure in response to each instance of intermittent energization of said electromagnet means; and master switch means movable from an inoperative position to an operative position to thereby effect energization of said electromagnet means by way of said control means and to thus effect completion of said motor circuit as a result of energization of said electromagnet means.

Claim 18

In a motion-picture camera, a combination comprising a rotary shutter; a Drive including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit operation of said drive, said blocking means normally tending to move from said unblocking to said blocking position; electromagnet means energizable to move said blocking means from said blocking position to said unblocking position and to simultaneously and invariably complete the circuit of said motor so that the motor circuit is completed whenever and as long as said electromagnet means is energized; control means for regulating the energization of said electromagnet means for the desired mode of operation of said drive including selector means movable between a first position in which said electromagnet means is set for continuous energization so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said electromagnet means is set for intermittent energizations so that the shutter admits scene light for an individual exposure in response to each instance of intermittent energization of said electromagnet means; and master switch means movable from an inoperative position to an operative position to thereby effect energization of said electromagnet means by way of said control means and to thus effect completion of said motor circuit as a result of energization of said electromagnet means.

Claim 19

A combination as defined in claim 16, further comprising a socket for attachment of auxiliary trigger means which is adapted to move said master switch means to said operative position.

Claim 20

A combination as defined in claim 16 wherein, said one additional position of said selector means, said drive performs a single operation in response to movement of said master switch means to said operative position, said selector means being movable to another additional position in which said drive performs a succession of operations at variable intervals in response to movement of said master switch means to said operative position.

Claim 21

A combination as defined in claim 10, wherein said drive further comprises a main drive member which is rotated by said motor and a locating member provided on said drive member, said blocking means comprising a blocking element which engages said locating member in deenergized condition of said electromagnet means to thereby hold said drive member in a predetermined angular position.

Claim 22

A combination as defined in claim 19, wherein said blocking element is a lever having an arm provided with a projection which enters a notch provided on said locating member in response to deenergization of said electromagnet means to thereby hold said driving member in said predetermined angular position.

Claim 23

A combination as defined in claim 16, further comprising synchronizing switch means movable to closed position in response to movement of said shutter to open position.

Claim 24

A combination as defined in claim 21 wherein said synchronizing switch means forms part of a flash circuit.

Claim 25

A combination as defined in claim 16, wherein said drive comprises a rotary main drive shaft and further comprising frame counter means operated by said main drive shaft in response to each opening of the shutter.

Claim 26

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor and a rotary main drive shaft which is rotated by said motor; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in whiCh said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; and frame counter means operated by said main drive shaft in response to each opening of the shutter, said frame counter means comprising means for arresting said drive upon completion of a predetermined number of exposures.

Claim 27

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor and a rotary main drive shaft which is rotated by said motor; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in whiCh said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; and frame counter means operated by said main drive shaft in response to each opening of the shutter, said frame counter means comprising means for arresting said drive upon completion of a predetermined number of exposures.

Claim 28

A combination as defined in claim 24, wherein said arresting means comprises a limit switch.

Claim 29

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; adjustable diaphragm means; exposure meter means for adjusting said diaphragm means as a function of scene brightness; and correcting means for correcting the adjusting action of said exposure meter means in response to the movement of said selector means to said additional position.

Claim 30

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; adjustable diaphragm means; exposure meter means for adjusting said diaphragm means as a function of scene brightness; and correcting means for correcting the adjusting action of said exposure meter means in response to the movement of said selector means to said additional position.

Claim 31

A combination as defined in claim 26, wherein said exposure meter means comprises an electric light meter and said correcting means comprises resistor means connected in parallel with said light meter and switch means in series with said resistor means and arranged to close in response to movement of said selector means to additional position.

Claim 32

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; said release means further comprising a master switch in circuit with said electromagnet means and arranged to close in response to movement of said trigger means to said operative position, said selector means comprising a second switch in series with said master switch and arranged to close in the first position of said selector means so that said electromagnet means is energized in direct response to movement of said trigger means to said operative position and remains energized while said trigger means dwells in said operative position.

Claim 33

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; said release means further comprising a master switch in circuit with said electromagnet means and arranged to close in response to movement of said trigger means to said operative position, said selector means comprising a second switch in series with said master switch and arranged to close in the first position of said selector means so that said electromagnet means is energized in direct response to movement of said trigger means to said operative position and remains energized while said trigger means dwells in said operative position.

Claim 34

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor, a main drive member which is rotated by said motor, and a locating member provided on said main drive member; bLocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor, said blocking means comprising a blocking element which engages said locating member in the deenergized condition of said electromagnet means to thereby hold said main drive member in a predetermined angular position; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive, and a normally open control switch which is in circuit with said motor and is closed by said blocking element in response to the energization of said electromagnet means; and trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means.

Claim 35

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor, a main drive member which is rotated by said motor, and a locating member provided on said main drive member; bLocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor, said blocking means comprising a blocking element which engages said locating member in the deenergized condition of said electromagnet means to thereby hold said main drive member in a predetermined angular position; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive, and a normally open control switch which is in circuit with said motor and is closed by said blocking element in response to the energization of said electromagnet means; and trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means.

Claim 36

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor, a main drive member which is rotated by said motor and a locating member provided on said main drive member; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor, said blocking means comprising a blocking element which engages said locating member in the deenergized condition of said electromagnet means to thereby hold said main drive member in a predetermined angular position, said blocking element constituting a lever having a projection and said locating member comprising a wheel having an end face provided with a single notch which receives said projection in the deenergized condition of said electromagnet means when said main drive member reaches said predetermined position, said blocking means further comprising means for biasing said projection against said end face and said end face further having a slanting guide face which guides said projection into said notch upon deenergization of said electromagnet means; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; and trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means.

Claim 37

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor, a main drive member which is rotated by said motor and a locating member provided on said main drive member; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor, said blocking means comprising a blocking element which engages said locating member in the deenergized condition of said electromagnet means to thereby hold said main drive member in a predetermined angular position, said blocking element constituting a lever having a projection and said locating member comprising a wheel having an end face provided with a single notch which receives said projection in the deenergized condition of said electromagnet means when said main drive member reaches said predetermined position, said blocking means further comprising means for biasing said projection against said end face and said end face further having a slanting guide face which guides said projection into said notch upon deenergization of said electromagnet means; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; and trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means.

Claim 38

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor, a main drive member which is rotated by said motor, and a locating member provided on said main drive member; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor, said blocking means comprising a blocking element which engages said locating member in the deenergized condition of said electromagnet means to thereby hold said main drive member in a predetermined angular position, said locating member comprising a flank cooperating with said blocking element to prevent the rotation of said main drive member in either direction in said predetermined angular position of said main drive member and in the deenergized Condition of said electromagnet means; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; and trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means.

Claim 39

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor, a main drive member which is rotated by said motor, and a locating member provided on said main drive member; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor, said blocking means comprising a blocking element which engages said locating member in the deenergized condition of said electromagnet means to thereby hold said main drive member in a predetermined angular position, said locating member comprising a flank cooperating with said blocking element to prevent the rotation of said main drive member in either direction in said predetermined angular position of said main drive member and in the deenergized Condition of said electromagnet means; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; and trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means.

Claim 40

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means, said release means comprising a normally open master switch which is closed in response to the movement of said trigger means to said operative position to thereby at least initiate the energization of said electromagnet means; an internally threaded socket for attachment of auxiliary trigger means which is adapted to close said master switch; a second socket having electric terminals in parallel with said master switch; and second auxiliary trigger means comprising trigger switch means movable to a closed position, said second auxiliary trigger means being connectable with said second socket to thereby permit electric current to bypass said master switch on closing of said trigger switch means.

Claim 41

In a motion-picture camera, a combination comprising a rotary shutter; a drive, including an electric motor, for rotating said shutter; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means, said release means comprising a normally open master switch which is closed in response to the movement of said trigger means to said operative position to thereby at least initiate the energization of said electromagnet means; an internally threaded socket for attachment of auxiliary trigger means which is adapted to close said master switch; a second socket having electric terminals in parallel with said master switch; and second auxiliary trigger means comprising trigger switch means movable to a closed position, said second auxiliary trigger means being connectable with said second socket to thereby permit electric current to bypass said master switch on closing of said trigger switch means.

Claim 42

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor and a rotary main drive shaft rotated by said motor; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; and frame counter means operated by said main drive shaft in response to each opening of said shutter, said frame counter means comprising a normally open electric switch which is closed by said main drive shaft during each revolution of said main drive shaft and while said main drive shaft assumes a predetermined angular position.

Claim 43

In a motion-picture camera, a combination comprising a rotary shutter; a drive for rotating said shutter, including an electric motor and a rotary main drive shaft rotated by said motor; blocking means movable between blocking and unblocking positions to respectively prevent and permit the operation of said drive; electromagnet means energizable to move said blocking means to said unblocking position and to complete the circuit of said motor; release means including selector means movable between a first position in which said drive is set for continuous operation so that the shutter admits scene light to motion-picture film at predetermined intervals and at least one additional position in which said drive is set for intermittent operations so that the shutter admits scene light for an individual exposure in response to each operation of said drive; trigger means movable from an inoperative to an operative position to thereby effect the energization of said electromagnet means by way of said release means; and frame counter means operated by said main drive shaft in response to each opening of said shutter, said frame counter means comprising a normally open electric switch which is closed by said main drive shaft during each revolution of said main drive shaft and while said main drive shaft assumes a predetermined angular position.