Abstract: A bellows camera having a housing movably connected with its lens mount by a scissor linkage has a shutter with a spring-loaded setting ring carried on the lens mount, the setting ring being mechanically coupled with a wind-up lever on the camera housing through a gear train whose gears are carried on the legs of a knee joint articulated to the housing and to the lens mount. The housing-side end of the gear train is connected with the wind-up lever through a lost-motion coupling and is provided with a detent holding the setting ring in its cocked position until disengaged by the shutter release.

Abstract: A bellows camera has a housing movably connected with its lens mount by a scissor linkage including two pairs of intersecting arms on opposite sides of the lens mount, a first arm of each pair having one end pivoted to the housing and the opposite end guided in a slot on the lens mount whereas a second arm of each pair has one end pivoted to the lens mount and the opposite end guided in a slot on the housing. The slot-guided ends of the two second arms are engaged by respective rack members, slidable at right angles to the optical axis, which are in mesh with a pair of pinions on a common shaft traversing the housing and carrying a setting knob. If the knob is rotated beyond a limiting position of an operating range, corresponding to focusing on infinity, the rack members are cammed out of engagement with their respective scissor arms to enable manual collapsing of the camera.

Abstract: The top of the housing of a collapsible camera, connected by a scissor linkage with a relatively displaceable lens mount, has a cutout into which a viewfinder casing, swingable about a horizontal axis close to an upper lateral housing edge, is retracted in the collapsed state in which the lens mount enters the housing. A focusing knob on the housing controls the displacement of the extended lens mount, within an operating range, through a rack-and-pinion transmission engaging the scissor linkage; rotation of the knob beyond the "infinity" end of the operating range, preparatorily to a retraction of the lens mount into the camera housing, unblocks a latch serving to lock the viewfinder casing in its cutout. Return to the operating range automatically releases the latch and lets the spring-loaded casing jump out of the cutout to expose the viewfinder.

Abstract: The front of a camera lens mount, provided with a photocell window adjacent the objective, can be fitted with a light shield closely surrounding the cone of incident light rays and cutting across the photocell axis. To insure proper illumination of the photocell, a light conductor extends alongside the light shield from the vicinity of the photocell window to about the plane of the inlet end of the light shield.

Abstract: A disk rigid with a member of a gear train for the control of a spring-loaded setting ring of a shutter, connected via a lost-motion coupling with a wind-up lever, is rotatably mounted on a camera housing alongside a focusing knob which controls the displacement of a lens mount linked with the housing through a bellows. The knob has a tubular stem accommodating a pushbutton which, through a pair of outwardly projecting lugs, rests on a surrounding leaf spring having a tongue that engages in a notch of the disk in the cocked position of the shutter. Depression of the pushbutton disengages the tongue from its notch to release the shutter; such depression may be blocked by an underlying stop in a collapsed position of the camera.

Abstract: A bellows camera has a housing movably connected with its lens mount by a ir of scissor links whose operation is controlled by respective rack members driven by pinions on a common shaft which traverses the housing and carries a focusing-control knob. If the knob is rotated beyond a limiting position of an operating range, corresponding to focusing on infinity, the rack members are decoupled from the scissor links and simultaneously unblock a spring-loaded latch (or a pair of such latches) which is then free to engage a peg on the lens mount upon manual collapsing of the camera. Restoration of the knob to the aforementioned limiting position releases the latch and allows the lens mount to be re-extended by hand or under spring pressure.