Caille outboard motors

 Around 1906, the first gasoline outboard motor was designed by a Yale law student from Detroit named Cameron Waterman. Waterman asked the Caille Brothers, who manufactured slot-machines, to build the first 25 outboard motors. When the motors sold out immediately, Caille began producing their own successful line of outboards, and by the 1920s were making racing outboards. 

The company struggled during the Great Depression and was eventually acquired by Fuller-Johnson Company, and outboard production ended by the mid-1930s. I found some conflicting information which says the Fuller Johnson company closed in 1932. In any case, that was the end of the company.