Self-cocking device for a camera normally loaded nonperforated film

Claim 2

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a drum mounted upon and rotatable with one of the shafts, said drum having a cylindrical inner surface defining a recess, a holding member mounted upon and rotatable with the other shaft, a brake band within the recess normally biased radially outward against the inner surface of the drum in frictional contact therewith, whereby driving force can be transmitted through the brake band between the shafts, said brake band having a leading and a trailing end as it rotates with the shafts, the leading end being fastened to the holding member for rotation therewith; the inactivating means comprising means for connecting the first ratchet wheel to the trailing end of the brake band, whereby immobilization of the first ratchet wheel immobilizes the trailing end of the brake band; the measuring means comprising a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the filmcontacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.

Claim 3

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a drum mounted upon and rotatable with one of the shafts, said drum having a cylindrical inner surface defining a recess, a disk mounted upon and rotatable with the other shaft and disposed within the recess, said disk having in its periphery a notch defined in part by a notch surface extending at an acute angle to the cylindrical inner surface, rotation of the drum relative to the disk-moving portions of the inner surface toward the apex of said acute angle, a rolling member of circular cross section in the notch, and means for biasing said rolling member jams between the disk and the drum and prevents rotation of the drum relative to the disk in the first direction; the inactivating means comprising means extending from the ratchet wheel into the space between the rolling member and the apex of the acute angle for preventing motion of the rolling member in the first direction when rotation of the ratchet wheel is prevented; the measuring means comprising a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the film-contacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.

Claim 4

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a drum mounted upon and rotatable with one of the shafts, said drum having a cylindrical inner surface defining a recess, a disk mounted upon and rotatable with the other shaft and disposed within the recess, said disk having in its periphery a notch defined in part by a notch surface extending at an acute angle to the cylindrical inner surface, rotation of the drum relative to the disk-moving portions of the inner surface toward the apex of said acute angle, a rolling member of circular cross section in the notch, and means for biasing said rolling member jams between the disk and the drum and prevents rotation of the drum relative to the disk in the first direction; the inactivating means comprising means extending from the ratchet wheel into the space between the rolling member and the apex of the acute angle for preventing motion of the rolling member in the first direction when rotation of the ratchet wheel is prevented; the measuring means comprising a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the film-contacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.

Claim 5

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a drum mounted upon and rotatable with one of the shafts, said drum having a cylindrical inner surface defining a recess, a holding member mounted upon and rotatable with the other shaft, a rocking member pivotally supported by the holding member and located within the recess, said rocking member normally contacting the cylindrical inner surface, spring means for urging the rocking member into contact with the cylindrical inner surface; the inactivating means comprising means for connecting the ratchet wheel to the rocking member at a position between the cylindrical inner surface and the pivotal mounting whereby immobilization of the ratchet wheel prevents rotation of the rocking member in the first direction; the measuring means comprises a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the film-contacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.

Claim 6

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a drum mounted upon and rotatable with one of the shafts, said drum having a cylindrical inner surface defining a recess, a holding member mounted upon and rotatable with the other shaft, a rocking member pivotally supported by the holding member and located within the recess, said rocking member normally contacting the cylindrical inner surface, spring means for urging the rocking member into contact with the cylindrical inner surface; the inactivating means comprising means for connecting the ratchet wheel to the rocking member at a position between the cylindrical inner surface and the pivotal mounting whereby immobilization of the ratchet wheel prevents rotation of the rocking member in the first direction; the measuring means comprises a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the film-contacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.

Claim 7

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a second ratchet wheel mounted upon and rotatable with the drive shaft, a ratchet wheel mounted upon and rotatable with the film-winding shaft, a disk loosely mounted coaxially with the drive shaft, a ratchet pawl pivotally supported by the disk movable between an engaged position in which said ratchet pawl engages the second ratchet wheel for rotation therewith in the first direction and a disengaged position in which said ratchet pawl is disengaged from the second ratchet wheel, permitting rotation of the second ratchet wheel in the first direction independently of the ratchet pawl, means for normally biasing the ratchet pawl into the engaged position, the inactivating means comprising disconnecting means connecting the ratchet wheel and the ratchet pawl for moving the ratchet pawl into the disengaged position when the ratchet wheel is prevented from rotating; the measuring means comprises a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the film-contacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.

Claim 8

A shutter-cocking and film-winding device for a camera comprising a drive shaft adapted to be rotated in a first direction during a film-winding and shutter-cocking operation; a first ratchet wheel mounted concentrically with the drive shaft; measuring means for preventing the rotation of the first ratchet wheel following the advance of a film through a preselected distance during a film-winding operation; a film-winding shaft mounted concentrically with the drive shaft and adapted for connection in driving relation with a film takeup spool; connecting means normally connecting the drive shaft to the film-winding shaft in driving relation thereto; inactivating means for inactivating the connecting means when the first ratchet wheel is prevented from rotating, whereby the drive shaft is no longer connected in driving relation to the film-winding shaft; means for transmitting the rotation of the drive shaft to a shutter-cocking device; the connecting means comprising a second ratchet wheel mounted upon and rotatable with the drive shaft, a ratchet wheel mounted upon and rotatable with the film-winding shaft, a disk loosely mounted coaxially with the drive shaft, a ratchet pawl pivotally supported by the disk movable between an engaged position in which said ratchet pawl engages the second ratchet wheel for rotation therewith in the first direction and a disengaged position in which said ratchet pawl is disengaged from the second ratchet wheel, permitting rotation of the second ratchet wheel in the first direction independently of the ratchet pawl, means for normally biasing the ratchet pawl into the engaged position, the inactivating means comprising disconnecting means connecting the ratchet wheel and the ratchet pawl for moving the ratchet pawl into the disengaged position when the ratchet wheel is prevented from rotating; the measuring means comprises a blocking pawl engageable with the first ratchet wheel, a film-contacting roller contacting the film for rotation thereby as the film is wound on the takeup spool, and control means for holding said blocking pawl out of engagement with the first ratchet wheel until the roller has been rotated through a desired rotation angle and then moving said blocking pawl into locking engagement with the first ratchet wheel; the control means comprising pivot means for supporting the blocking pawl for rotation between a disengaged position in which the blocking pawl does not engage the first ratchet wheel and an engaged position in which the blocking pawl does engage the first ratchet wheel; resilient pawl-moving means for urging the blocking pawl into the engaged position; a control shaft rotatable in response to rotation of the film-contacting roller; a circular first disk fixed to the control shaft; a circular second disk mounted coaxially of the control shaft and rotatable relative thereto; means for limiting the rotation of the first disk relative to the second disk to rotation between a normal and a driving position; means for resiliently biasing the first disk into the normal position; a first notch extending inward from the periphery of the first disk; a second notch extending inward from the periphery of the second disk, said second notch being aligned with the first notch when the first disk is in the driving position and out of alignment with the first notch when the first disk is in the normal position; an arm connected to the blocking pawl for rotation therewith, said arm having a contact member normally resiliently urged into contact with the periphery of the second disk by the pawl-moving means when the blocking pawl is in the disengaged position, said contact member being movable into an engaged position within the notches of the first and second disks when said notches are aligned, said movement advancing the blocking pawl into the engaged position; and means operable following an exposure of the film for moving the blocking pawl out of engagement with the ratchet wheel into the disengaged position.