A quick look at Google shows that the company was formed in 1943 to distribute their diesel engines.
http://stevebriggs.netfirms.com/osmr...elhistory.html
Quote:-1943 Russel-Hipwell Engines Ltd. formed to handle the diesel distributorship.
Russel Brothers then decided to erect a large building on the south section of their property and to form another company to build these generator sets to be called Cummins Diesels of Ontario Limited and to operate independently of Russel Brothers Limited. As Russel's were building a number of boats for the Royal Canadian Navy, powered by Cummins diesels, Cummins of Ontario obtained the the exclusive distributor-ship for Cummins Diesels for all of Eastern Canada. They opened a sales and service branch in Haslifax, Nova Scotia. Some years later, as the company was selling and servicing other makes of diesels, the Cummins people objected to their name being used and the name was again changed. This time to Russel Hipwell Engines Limited.