Dating kundo clock aneversery updating gt5
He also attempted to make precision astronomical regulator clocks based on the torsion pendulum, but only four sold.The German Anton Harder apparently independently invented and patented the torsion clock in 1879-1880. de Gruyter of Amsterdam, who allowed the patent to expire in 1887.Torsion clocks are usually delicate, ornamental, spring-wound mantel clocks.
Thus no winding key or battery is needed, and it can run for years without human intervention.Compared to those I have seen on EBay this one is in excellent condition and cleaned up well. A 400 day anniversary clock is otherwise known as a torsion pendulum clock.The torsion clock is a mechanical clock which keeps time with a mechanism called a torsion pendulum.He was inspired by watching a hanging chandelier rotate after a servant had turned it to light the candles. Other firms entered the market, beginning the German mass production of these clocks.He formed the firm Jahresuhrenfabrik ('Year Clock Factory') and designed a clock that would run for a year, but its accuracy was bad. Although they were successful commercially, torsion clocks remained poor timekeepers. invented a temperature compensating suspension spring, which allowed fairly accurate clocks to be made.