Photographic camera having electric motor drive for shutter cocking and film winding

US3946412A · kind A · utility

Assignee

• VEB Pentacon Dresden · DE

Inventors

• Werner Hahn · Dresden, DE
• Herbert Scholze
• Rolf Seifert

Key dates

• Filing date: Jul 22, 1974
• Grant date: Mar 23, 1976
• Expiry date: Jul 22, 1994

Classification

• Technology area (CPC G): Physics
• CPC primary: G03B17/425
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photographic camera having a mirror gearing and an electric motor for shutter cocking and film winding, in which the current connection for the electric motor situated in the camera housing is controlled alternately by the shutter and film winding. The camera includes a manual release mechanism and a remote release mechanism. A detent disc is mounted on a shaft and driven by the electric motor. A release lever is also mounted on the shaft. A first blocking lever is provided for inhibiting the movement of the release lever and is connectable both with the manual release and the remote release. A second blocking lever also inhibits the movement of the release lever. A detent lever with a nose thereon engages the detent disc and is connected through a joint with the second blocking lever. An actuator lever is provided for releasing the detent lever from the detent disc and is blockable by a blocking pawl coupled with the mirror gearing. A dog is driven by the motor for tensioning the actuator lever. The motor drives the detent disc causing the release lever to be held under tension by the first and second blocking levers. When the cocking cycle is completed the detent lever drops in…