Hello All,
A research challenge
Part of the confusion may be from a common linking of a type of differential with the name of their accredited distributor.
I located this link about an experimental vehicle based off a Ford chassis - Accessed August 4th 2016 from
https://servicepub.wordpress.com/201...illery-tractor
The link states that the differential parts were sourced from "The Canadian distributor for Thornton bogies, H.V. Welles of Windsor, Ontario, carried out the conversions". So they could be Thornton Bogies that were supplied and converted by H V Wells. This results in the Thornton-Welles reference.
There is a thread about them here in Australia. Accessed August 4th 2016 from,
http://www.hcvc.com.au/forum/OldTruc...thornton-names
According to "Grandad - 23rd January 2013 "The Thornton Tandem Co. became the Detroit Automotive Products Corp" Accessed August 4th 2016 from,
http://www.hcvc.com.au/forum/OldTruc...n-names#104467
My work here is done - teehee
Kind Regards
Lionel