Automatic film winding and shutter cocking mechanism

Claim 2

A film winding control mechanism for a motor driven photographic camera comprising: means for winding said film and for cocking the camera shutter; a rotatable cam member; means for driving said means for winding and cocking with the load of said means for winding less than a predetermined value said means for driving also rotating said cam member when the driving of said means for winding and cocking is interrupted with said winding load exceeding said predetermined value; a motor for driving said means for driving; a switching member movable between first and second positions and moved by engagement with said cam member when rotated; a release controlling member movable between first and second positions and engageable with said switching member to move from said first position to said second position with said switching member in said second position and biased from engagement with said switching member with said switching member in said first position; detecting means movable between first and second positions and in engagement in said first position with said release controlling member in said second position thereof from the completion of exposure until the completion of winding, said means for detecting maintained in said second position in nonengagement with said release controlling member from the completion of winding until the completion of exposure; and first switching means for de-actuating said motor with said means for detecting in engagement with said release controlling member.

Claim 3

A film winding control mechanism as in claim 1 wherein said switching means includes second switching means for actuating said means for driving with said switching member in said second position, third switching means for de-actuating said means for driving in response to the completion of shutter release operation, and fourth switching means for restoring actuation of said means for driving upon completion of shutter release operation.

Claim 4

A film winding control mechanism for a motor driven photographic camera comprising: means for winding said film and for cocking the camera shutter; a rotatable cam member; means for driving said means for winding and cocking with the load of said means for winding less than a predetermined value, said means for driving also rotating said cam member when the driving of said means for winding and cocking is interrupted with said winding load exceeding said predetermined value; a motor for driving said means for driving; a switching member movable between first and second positions and moved by engagement with said cam member when rotated; a release controlling member movable between first and second position and engageable with said switching member to move from said first position to said second position with said switching member in said second position and biased from engagement with said switching member with said switching member in said first position; detecting means movable between first and second positions and in engagement in said first position with said release controlling member in said second position thereof from the completion of exposure until the completion of winding, said means for detecting maintained in said second position in non-engagement with said release controlling member from the completion of winding until the completion of exposure; means for rewinding said film; and a driving control means movable between a first position connecting said driving motor with said means for driving and a second position connecting said driving motor with said means for rewinding, said driving control means being normally positioned at said first position and moved to said second position with said detecting means in engagement with said release controlling member, whereby said driving control means in said second position switches said motor from driving said means for driving to driving said means for winding.

Claim 5

A film winding control mechanism for a motor driven photographic camera comprising: means for winding said film and for cocking the camera shutter; a rotatable cam member; means for driving said means for winding and cocking with the load of said means for winding less than a predetermined value, said means for driving also rotating said cam member when the driving of said means for winding and cocking is interrupted with said winding load exceeding said predetermined value; a motor for driving said means for driving; a switching member movable between first and second positions and moved by engagement with said cam member when rotated; a release controlling member movable between first and second position and engageable with said switching member to move from said first position to said second position with said switching member in said second position and biased from engagement with said switching member with said switching member in said first position; detecting means movable between first and second positions and in engagement in said first position with said release controlling member in said second position thereof from the completion of exposure until the completion of winding, said means for detecting maintained in said second position in non-engagement with said release controlling member from the completion of winding until the completion of exposure; means for rewinding said film; and a driving control means movable between a first position connecting said driving motor with said means for driving and a second position connecting said driving motor with said means for rewinding, said driving control means being normally positioned at said first position and moved to said second position with said detecting means in engagement with said release controlling member, whereby said driving control means in said second position switches said motor from driving said means for driving to driving said means for winding.

Claim 6

A film winding control mechanism as in claim 3 further comprising clutch means controlling said means for winding and wherein said means for detecting includes a second switching member for actuating said second clutch means to interrupt operation of said means for winding with said means for detecting in said first position with said release controlling member moving from said first position to said second position.

Claim 7

A film winding control mechanism as in claim 3 wherein said camera includes a removable rear cover and means engaging said rear cover and said means for detecting whereby said means for detecting is moved from said first position to said second position with said rear cover removed from the camera.

Claim 8

A film winding control mechanism as in claim 1 wherein said means for driving includes a motor circuit and means for shorting said motor circuit to de-actuate said means for driving, second switching means for actuating said means for shorting upon completion of an exposure and for de-actuating said means for shorting upon commencement of shutter cocking, and third switching means actuated with said release controlling member in said second position for actuating said motor circuit upon completion of the exposure.

Claim 9

A film winding control mechanism as in claim 1, wherein the movement of said release controlling member from said first position to said second position and the engagement thereof with said detecting means in said first position moves said detecting means to actuate said first switching means to de-actuate said motor.

Claim 10

A film winding control Mechanism as in claim 1, wherein said release controlling member includes cam means mounted thereon, and said film winding control mechanism further comprises: means for releasing the shutter mechanism of the camera including a rod member movable only after completion of film winding, a first rotatable lever engageable with said cam means, a second lever mounted on said first rotatable lever, said second lever is biased to rotate with said first lever and engageable with said rod member, whereby said rod member is moved to release the camera shutter mechanism with movement of said release controlling member from said first to said second position, and said first lever is also rotatable against said bias as the rotation of said second lever is interrupted by said rod member to slow movement of said release controlling member.

Claim 11

A film winding control mechanism as in claim 1, further comprising: an operating lever moved in one directioon on completion of winding and moved in the opposite direction upon completion of exposure, said operating lever moves said detecting means to said second position thereof with movement of said operating lever in said first direction and moves said detecting means to said first position thereof with movement of said operating lever in said opposite direction.

Claim 12

A film winding control mechanism as in claim 3 wherein said detecting means is further shiftable by engagement with said release controlling member moving from said first position to said second position and said driving control means is moved from said first position to said second position in response to said shift of said detecting means.

Claim 13

A film winding control mechanism as in claim 3 wherein said driving control means comprises: a first gear connected to said means for driving; a second gear means connected to said means for rewinding; an interconnecting gear driven by said motor and movable between a first position engaging with said first gear and a second position engaging with said second gear, said interconnecting gear is normally in said first position and is moved to said second position with said detecting means in engagement with said release controlling member, whereby said driving control means switches said motor from driving said means for driving to driving said means for rewinding with said interconnecting gear in said second position.

Claim 14

A film winding control mechanism as in claim 3 further comprising: a winding stop gear connected to said means for winding said film; a first winding stop disc including an aperture on its circumference and mounted to said winding stop gear; a second winding stop disc rotatably mounted on said first winding stop disc and including a projection for covering said aperture and biased to cover said aperture with said projection; a rotatable lever including an arm for engaging said detecting means and a cam follower riding on the periphery of said first winding stop disc, said rotatable lever is movable by the winding shaft of the rear shutter curtain; whereby said first winding stop disc is rotated by said means for winding said film to cause said cam to displace said projection and to engage said aperture in said first winding stop disc and rotating said arm to move said detecting means from said first to said second position upon completion of film winding, said cam is retained in said aperture until completion of exposure; the rotation of said rear shutter curtain winding shaft rotating said rotatable lever to cause said cam follower to disengage from said aperture thereby rotating said arm to move said detecting means from said second to said first position upon completion of exposure, said cam follower is retained out of said aperture by said projection.

Claim 15

Film winding control mechanism as in claim 12 further comprising a movable shaft including a first cam mounted thereon and a second rotatable lever engaging said first cam and wherein said release controlling member includes a second cam mounted thereon, and said film winding control mechanism further comprises: second gear means engaging said winding stop gear; third gear means and a first clutch means connected to said means for winding said film; second clutch means interconnecting said second and third gear means; means for releasing the shutter mechanism of the camera and including a movable rod member, third and fourth rotatable levers, means for biasing said third rotatable lever to engage said second cam means, whereby said rod member is moved to release the camera shutter mechanism with movement of said release controlling member from said first to said second position; a second movable rod member supporting said second clutch means and engaging said second rotatable lever, whereby said second clutch means disengages said second and third gear means with movement of said release controlling member from said first to said second position.

Claim 16

A film winding control mechanism as in claim 1 wherein said means for driving comprises a differential gear mechanism including: a sun gear driven by said motor; a first rotatable member arrangd concentrically with said sun gear; an epicyclic gear mounted on said first rotatable member so as to engage with said sun gear; a second rotatable member arranged concentrically with said sun gear and having an inner faced gear engaged with said epicyclic gear; and said means for winding is connected with one of said first and second rotatable members, while said rotatable cam member is connected with the other of said first and second rotatable member.