Who invented the 400 day clock?

Who invented the 400 day clock?

Anton Harder
The polished clock mechanism is exposed under a glass case or dome, to allow people to watch the torsion pendulum turn. Clocks of this style, first made by Anton Harder around 1880, are also known as 400-day or anniversary clocks, because many can run for an entire year on a single winding.

What is a 400 day clock?

A 400 day clock has a torsion pendulum to make it run longer. A torsion pendulum hangs from a thin flat wire (called the suspension spring) and rotates in one direction and then the other, instead of swinging back and forth as a standard pendulum does.

Why is it called anniversary clock?

The “anniversary clock” is called that because it’ll run for about 400 days on one winding, so you can wind the thing on your wedding anniversary, perhaps making a celebration of the ritual.

Are kundo clocks still made?

Kundo is a trademark name of Kieninger & Obergfell, a long time German clock manufacturer. Key-wound 400 day clocks, such as this one, are no longer made. They were designed to be wound every 400 or so days, so owners typically wind them once every year on an anniversary date. The clocks are known for being reliable.

Why does my 400 day clock stop?

The spring being bent is the number one cause for most of these clocks not working. First there is the brass bottom block that the Anniversary Clocks Pendulum balls attach to. Then in the upper middle of the spring there is the fork attachment that whacks the verge back and forth.

Can you Overwind a clock?

It’s actually impossible to overwind a clock, whilst you can wind a clock until it cases internal damages and breakages, it’s impossible to continuously wind a clock. However, in many cases it may be difficult to spot when your clock needs an oiling.

When was the anniversary clock invented?

The anniversary clock was first invented and patented in 1841 by an American, Aaron Crane. But Anton Harder, a German clock maker claimed to have created it in 1879 with his idea for the winding mechanism taken from watching servants light the candles on a rotating chandelier.

What does an anniversary clock look like?

Anniversary clocks are table top clocks in a glass or crystal case that allow you to see its inner workings. They are typically made of brass and have a rotating pendulum with three or four brass balls that whirl like a crazy merry-go-round beneath the clock face. Some clocks have a brass handle on the top.

Are anniversary clocks valuable?

Anniversary clocks are long-running torsion pendulum clocks, also known as 400-day clocks. Kundo anniversary clocks were first produced in 1923 and are now highly collectible. Kundo 400 Day Clock Instruction Sheet ca.

How do I regulate my 400 day clock?

An effective way to regulate a 400 day clock is to grasp the pendulum when as comes to a stop at the end of a rotation, hold it in place, turn the regulating disc, then release the pendulum.

Is it OK to turn a clock backwards?

If your timepiece has a mechanical movement, then it is best not to put the clock in reverse. If your timepiece is a quartz movement, you are probably safe to turn it backward. If you have a very old cuckoo clock, it may not even go in reverse without breaking the mechanism.

Where is the John Wanamaker Store in Philadelphia?

The store stands on the site of “The Grand Depot”, encompassing an entire block at the corner of Thirteenth and Market Streets across from Philadelphia’s City Hall. The new store, The Wanamaker Building, which still stands today, became a Philadelphia institution.

When did John Wanamaker Place his first newspaper ad?

During an 1887 organizing drive by the Knights of Labor, he fired the first twelve union members who were discovered by his detectives. Wanamaker was the first retailer to place a half-page newspaper ad (1874) and the first full-page ad (1879).

Why did John Wanamaker start the Penny Savings Bank?

In 1889 Wanamaker began the First Penny Savings Bank in order to encourage thrift. That same year he was appointed United States Postmaster General by President Benjamin Harrison; he was accused by the newspapers of the day of buying the post.

Where was John Wanamaker born and where was he raised?

Wanamaker was born on July 11, 1838, in a then-rural, unincorporated area that would in time come to be known as the Grays Ferry neighborhood of South Philadelphia.