Upon discovering the Telechron technology, Hammond designed a motor that was synchronous, like Warren's, that is to say, it rotated at a speed that was tied to the frequency of the current supplied by the power grid.

The latter Hammond did not consider to be a disadvantage; he believed that people would be misled by their clocks if they restarted automatically after a power outage.

[4] Hammond employed well-paid toolmakers who created sophisticated tools to stamp out the various components of his clocks, which could then be assembled in a belt operation by unskilled laborers.

In 1932, the economic troubles of the Great Depression threatened the clock-making industry; about 150 clock companies went out of business.

In this situation, Hammond attempted to save his factory by starting the production of an electric bridge table.

Apart from some websites, such as the ones referred to in the notes, one may consult Spin to Start, the newsletter of the Synchronous Society, which was devoted to the collection of Hammond clocks.