Initial demo of slant wheel variablle differentials @MarkFrankclocks
Initial demo of slant wheel variablle differentials @MarkFrankclocks
Uploaded July 2017 | Updated September 2026, 2 weeks ago
This video shows a demonstration of the Janvier style variable differentials governing the moon's rise and set within the sun rise / moonrise - set module.
Initial demo of slant wheel variablle differentialsHalim Time and Glass Museum, Evanston, IllinoisDemo of interlock feature in the Hall Infallible Lockout Protection systemAstro-skeleton, Polishing a large bevel wheel in 32 minutes flatAstro-skeleton, fitting of the carrying frame to the clock demo.Yale Model 1Astro-skeleton, Speed selector for celestial component demonstrationsCary Safe Co. automatic time lock, c. 1893Astro-skeleton, cutting 468 teeth into the planisphere setting dialAstro-skeleton, Gillett and Johnston dual remontoireMechanical calculator, Johann Jakob Sauter. Video curtesy of Gotesborg Stadsmuseum. IMPROVED AUDIOWatson clockwork module finished
Mark Frank |

Initial demo of slant wheel variablle differentials

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER