COMPUR - Compur Shutter Construction

Comprehensive technical manual detailing the construction and operation of Compur and Compur Rapid shutters, recognized as the most advanced interlens shutters commercially available. The work traces the history of these mechanisms, their manufacturing monopoly by the Deckel factory in Germany, and competing designs such as the Kodak Supermatic. The manual provides in-depth analysis of internal components: extremely thin steel blades (0.002 to 0.003 inches thickness), the actuating ring, the bird pawl mechanism, and the timing system incorporating delay mechanisms and pallet arrangements for controlling exposure duration and time/bulb settings. Particular emphasis is placed on flash synchronization mechanisms and comparative study of Prontor II and Klio shutters employing different operational principles. The document extensively covers the fully synchronized Compur Rapid with both X and M synchronization arrangements, and the Prontor SV offering complete synchronization for both flashbulb and electronic flash systems. Extensively illustrated with technical diagrams and explanatory schematics, this manual serves as an essential reference for understanding the sophisticated mechanics of these precision shutters used in miniature camera construction.