Silver Loehr Perpetual Pocket Watch
Price : £1,450.00
Diameter 49 mm
A late 19th Century Swiss pedometer wind lever in a silver full hunter case. Gilt three quarter plate movement with going barrel wound by an oscillating weight. Plain cock with polished steel regulator, compensation balance with blue steel spiral hairspring. Club foot lever escapement. Automatic winding work set above the plate carries a weight set at the side which oscillates as the wearer walks, safety mechanism to avoid over-winding. Signed white enamel dial with subsidiary seconds, Roman numerals, blue steel hands. Engine turned silver full hunter case, the flyspring for the font cover lacking. Signed and numbered silver cuvette, aperture to allow the watch to be wound by key if desired and central thumbwheel for hand set.
Signed Loehr Patent Perpetuale
August von Loehr of Vienna took out patents for the safety mechanism in Britain and USA in 1878 and 1879. See Pocket Watches by Reinhard Mieis page 125 for a similar watch and page 41 for details of the mechanism