The rough start of the employee time clock industry.
To be honest, most of this information came from Glenn Robbins Sr, a former Simplex Time Clock engineer who went on to invent the first Acroprint mechanical time clock.  The Robbins family, generations, II and III still own and run the company, including USA manufacturing, in Raleigh, North Carolina.

It began in 1888 in New York City by William Bundy, a jeweler with employees. He invented a clock that could print the time.  This machine made people accountable for their time, and therefore it was unpopular with employees word-wide.  Bundy found two other office machine builders (they had really rudimentary typewriters and adding machines back then), and built an empire.  ITR, International Time Recorders became the sales force, and an adding machine company, Computing Tabulating Recording Corporation, built the punch clock time clocks.   Believe it or not, there is a museum devoted to the Bundy Time Clock.

http://bundymuseum.org/site3/permanent-exhibits/permanent-collection/