I have been spending some time at the North York Library searching the Toronto City Directories. On this visit I was looking for a Willie Warwick, who apparently came to Canada with his family in 1921. I had a contact with a Mel Warwick in England, who was looking for a family bible that Willie may have had with him. I didn’t find any trace of Willie; but I downloaded information on all the Warwick’s for 1937. I found Dorothy Warwick, who was the Daughter of John Warwick, my grandfather’s brother. She is a first cousin once removed. She worked for The Rogers Batteryless Co.
Radio receivers were originally operated by battery. The term batteryless radio was initially used for the radio receivers which could be used directly by AC supply
These were invented on April 8, 1925 in Canada by Edward S Rogers, Sr. who made world history, when he and his two chief engineers built the world's first AC mains-powered radio. The unit operated with 5 Rogers AC vacum tubes and the Rogers Battery-Eliminator Power Unit (power supply). This unit was later marketed for $120 as "Type 120". He established the Toronto station CFRB (an abbreviation of Canada's First Rogers Batteryless) to promote sales of the product. Batteryless Radios were not introduced into the United States until May,1926 and then into Europe in 1927.
Information from Wikipedia “Batteryless radio”
I wonder if I could get a discount on my Rogers bill? Not likely.
Just in case you were interested