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“Model” engines were built by Central City Iron Works of Stevens Point, Wisconsin. For 1904, the line consisted of 2 and 4 horsepower verticals, horizontals from 2 to 100
horsepower, and four cycle marine engines of 3 and 6 horsepower. Hoisting engines were also built in sizes from 4 to 25 horsepower. Model engines could be water or oil cooled. Other features included mechanically operated intake valves and an impressive array of sight feed oilers. In 1918 the company was purchased by Trenam Tractor Company of Milwaukee.
The Dickinson engine was advertised in 1904, by Central Machine & Tool Co. of Battle Creek, Michigan. Apparently it had been designed by Frank Dickinson who was granted a patent that year covering certain features. Except for a few advertisements illustrating this engine, no data can be found. A look at this illustration reveals an unusual driving mechanism for the governor. Gear teeth were cut on the face of the cam gear to operate the valve mechanism. Bevel teeth on the side of the cam gear operated the governor.
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