Jack Craib's Rowboat Motor Information Site


Jewel Electric Company
Chicago, Illinois


First, none have been found to my knowledge.

Second, tell me if you have seen one!!! Send photos!!!

It is so hard to accept none are around given all
the articles about it.

A fine prototype was photographed anyway. The three
photos here appear to be taken on the same day,
but appeared in different articles.


Click on the patent drawing to get the full patent PDF.

To read the full articles, click on the following links:

Below is a list of "Detachable Engine" makers from a 1917 issue of a trade directory. (Amphion is missing...)