Some pictures might help. There were several brands of auxixilaries, with the most common being Spicer and Brown-Lipe. I think there was also a brand called "Truxtell" or something similar, but they mainly made auxiliary drive axles for the Model T and other older commercial vehicles.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!