Shutter cocking and release means for photographic apparatus with expansible housing

In a photographic apparatus, a combination comprising a housing having a first section and a second section, said second section being reciprocable with respect to said first section between first and second positions;

• release means mounted in said first section and having a first member movable between starting and operative positions;
• a normally open shutter-actuating switch mounted in said first section;
• means for closing said switch, including a second member movable between starting and operative positions in which said switch is respectively open and closed, said second member being located in the path of movement of said first member at least when said second member assumes said starting position;
• and means for blocking the movement of at least one of said members while said second section assumes said first position, including a device which is movable by said second position and is arranged to move said one member to its respective starting position to thereby open said switch and to hold said one member against movement to the respective operative position when said second position assumes said first position but to permit the movement of said one member to the respective operative position in response to movement of said second section from said first to said second position so that each closing of said switch in response to movement of said first member from said starting to said operative position thereof must be preceded by a movement of said second section from said second to said first and back to said second position thereof.