Camera with a power-driven film winding device

Claim 2

In a camera with automatic film advance and shutter cocking means, the combination comprising: an electric motor; drive means interlocked with said motor to cock and release a shutter and advance a film with rotation of said motor; an electrical switch movable between a first and a second position; means responsive to the movement of said drive means automatically to move said switch to said second position upon completion of film advancing and shutter cocking and to said first position upon completion of shutter releasing; a first electrical power source; a second electrical power source connected in series with said first power source; a high-voltage circuit including said first and second electrical power sources to energize said motor by the total voltage of the both power sources; a low-voltage circuit including one of said electrical power sources only to energize said motor; a circuit for short-circuiting two terminals of said motor to stop said motor; switching means for controlling said low and high voltage circuits movable between a first position in which said highvoltage circuit is closed in either position of said switch and a second position in which said low-voltage circuit is closed when said switch is in its first position and in which said short-circuiting circuit is closed when said switch is in its second position; said switching means normally being in said second position thereof; and manually operable means for maintaining said switching means at its first position while said operable means is operated.

Claim 3

A camera according to claim 1, further comprising: second switching means provided between said switch and said first-mentioned switching means, said second switching means being movable between a first position in which said low-voltage circuit is closed when said switch and said first-mentioned switching means are in their respective second positions and in which said short-circuiting circuit is closed when said switch is in its first position but said first-mentioned switching means is in its second position and a second position in which said low-voltage circuit is closed when said switch is in its first position but said first-mentioned switching means is in its second position and in which said short-circuiting circuit is closed when said switch and said first-mentioned switching means are in their respective second positions; said second switching means normally being in its second position; and second manually operable means for maintaining said second switching means at its first position while said second operable means is operated.

Claim 4

A camera according to claim 1, wherein said electrical switch includes a first contact connected with one of the terminals of said motor, a second contact connected with said first contact in the first position of said switch and a third contact connected with said first contact in the second position of said switch, and wherein said first-mentioned switching means includes second and third electrical switches interlocked with each other, said second switch being connected with said second contact of said first-mentioned switch and selectively connectable with first and second contacts, said third switch being connected with said third contact of said first-mentioned switch and selectively connected with first and second contacts, each of said second and said third switches being in contact with the first contact thereof when said first switching means is in its first position and with the second contact thereof when said first switching means is in its second position, the first contacts of said second and third switches being connected with one of the terminals of said second electrical power source so as to close said high-voltage circuit in either position of said first-mentioned switch when said first switching means is in its first position, said second contact of said second switch being connected with one of the terminals of said first electrical source so as to close said low-voltage circuit when said first switching means is in its second position but said first-mentioned switch is in its first position, said second contact of said third switch being connected with the other terminal of said first electrical source so as to close said short-circuiting circuit when said first switching means and said first-mentioned switch are in their respective second positions.

Claim 5

A camera according to clAim 2, wherein said first-mentioned electrical switch includes a first contact connected with one of the terminals of said motor, a second contact connected with said first contact in the first position of said first-mentioned switch and a third contact connected with said first contact in the second position of said first-mentioned switch, said second switching means includes fourth and fifth electrical switches interlocked with each other, said fourth electrical switch being connected with said second contact of said first-mentioned switch and selectively connectable with first and second contacts thereof, said fifth electrical switch being connected with said third contact of said first-mentioned switch and selectively connectable with first and second contacts thereof, each of said fourth and fifth switches being connected with the first contact thereof when said first switching means is in its first position and with the second contact thereof when said first switching means is in its second position, and said first switching means includes second and third electrical switches interlocked with each other, said second switch being selectively connectable with first and second contacts thereof and connected both with said second contact of said fourth switch and said first contact of said fifth switch, said third switch being selectively connectable with first and second contacts thereof and connected both with said first contact of said fourth switch and said second contact of said fifth switch, each of said second and third switches being in contact with the first contact thereof when said first switching means is in its second position, the first terminals both of said second and said third switch being connected with one of the terminals of said second electrical power source to form said high-voltage circuit, said second terminal of said second switch being connected with one of the terminals of said first electrical power source to form said low-voltage circuit, the second contact of said third switch being connected with the other terminal of said first electrical power source to form said short-circuiting circuit.

Claim 6

In a camera with automatic film advance and shutter cocking means, the combination comprising: an electric motor; drive means interlocked with said motor so as to cock and release a shutter and advance a film with rotation of said motor; an electrical switch movable between a first and a second position; means responsive to the movement of said drive means to automatically move said switch to its second position upon completion of film advancing and shutter cocking and to its first position upon completion of shutter releasing; a first electrical power source; a second electrical power source connected in series with said first electrical power source; a high-voltage circuit including said first and second electrical power sources to energize said motor by the total voltage of the both power sources; a low-voltage circuit including only said first electrical power source to energize said motor by the voltage of said first power source; a circuit for short-circuiting two terminals of said motor to stop said motor; first switching means movable between a first position in which said low-voltage circuit is closed when said switch is in its first position and a second position in which said short-circuiting circuit is closed when said switch is in its second position; said first switching means normally being in said second position thereof; first manually operable means for maintaining said first switching means at its first position while said operable means is operated; second switching means provided between said switch and said first switching means, said second switching means being movable between a first position in which said low-voltage circuit is closed when said switch and said first switching means are in their respective second positions and in which said short-circuiting circuit iS closed when said switch is in its first position but said first switching means is in its second position and a second position in which said low-voltage circuit is closed when said switch is in its first position but said first switching means is in its second position and in which said short-circuiting circuit is closed when said switch and said first switching means are in their respective second positions; said second switching means normally being in its second position; second manually operable means for maintaining said second switching means at its first position while said second operable means is operated; third switching means movable between a first position for single-frame phototaking in which said high-voltage circuit is closed when said switch and said first switching means are in their respective first positions and in which said low-voltage circuit is closed when said switch is in its second position but said first switching means is in its first position and a second position for continuous phototaking in which said low-voltage circuit is closed when said switch is in its second position but said first switching means is in its first position and in which said short-circuiting circuit is closed when said switch and said first switching means are in their respective first positions; and third manually operable means for changing over said third switching means between the first and second positions thereof.

Claim 7

In a camera with automatic film advance and shutter cocking means, the combination comprising: an electric motor; drive means interlocked with said motor so as to cock and release a shutter and advance a film with rotation of said motor; an electrical switch movable between a first and a second position; means responsive to the movement of said drive means to automatically move said switch to its second position upon completion of film advancing and shutter cocking and to its first position upon completion of shutter releasing; a first electrical power source; a second electrical power source connected in series with said first electrical power source; a high-voltage circuit including said first and second electrical power sources to energize said motor by the total voltage of the both power sources; a low-voltage circuit including only said first electrical power source to energize said motor by the voltage of said first power source; a circuit for short-circuiting two terminals of said motor to stop said motor; first switching means movable between a first position in which said low-voltage circuit is closed when said switch is in its first position and a second position in which said short-circuiting circuit is closed when said switch is in its second position; said first switching means normally being in said second position thereof; first manually operable means for maintaining said first switching means at its first position while said operable means is operated; second switching means provided between said switch and said first switching means, said second switching means being movable between a first position in which said low-voltage circuit is closed when said switch and said first switching means are in their respective second positions and in which said short-circuiting circuit iS closed when said switch is in its first position but said first switching means is in its second position and a second position in which said low-voltage circuit is closed when said switch is in its first position but said first switching means is in its second position and in which said short-circuiting circuit is closed when said switch and said first switching means are in their respective second positions; said second switching means normally being in its second position; second manually operable means for maintaining said second switching means at its first position while said second operable means is operated; third switching means movable between a first position for single-frame phototaking in which said high-voltage circuit is closed when said switch and said first switching means are in their respective first positions and in which said low-voltage circuit is closed when said switch is in its second position but said first switching means is in its first position and a second position for continuous phototaking in which said low-voltage circuit is closed when said switch is in its second position but said first switching means is in its first position and in which said short-circuiting circuit is closed when said switch and said first switching means are in their respective first positions; and third manually operable means for changing over said third switching means between the first and second positions thereof.

Claim 8

A camera according to claim 5, wherein said first-mentioned electrical switch includes a first contact connected with one of the terminals of said motor, a second contact connected with said first contact in the first position of said first-mentioned switch and a third contact connected with said first contact in the second position of said first-mentioned switch, said first switching means includes second and third electrical switches interlocked with each other, said second switch being connected with said second contact of said first-mentioned switch and selectively connectable with first and second contacts, said third switch being connected with said third contact of said first-mentioned switch and selectively connectable with first and second contacts, each of said second and third switches being in contact with the first contact thereof when said first switching means is in its first position and with the second contact thereof when said first switching means is in its second position, both the second contact of said second switch and the first contact of said third switch being connected with one of the terminals of said first-mentioned switch to form said low-voltage circuit, the second contact of said third switch being connected with one of the terminals of said second power source to form said short-circuiting circuit, and said third switching means includes a first contact connected with the first contact of said second switch, a second contact connected with one of the terminals of said second power source to form said high-voltage circuit, and a third contact connected with one of the terminals of said first power source to form said short-circuiting circuit.