I know very little about the history of their products prior to the automatics, but they claim a founding date of 1874.
Blackstone was the first top loading automatic washing machine, with the model 50A being introduced in 1940/1941, prior to the War.
After the War, the 50A washer was revised slightly, and along with a newly styled cabinet was introduced as the 150.
In the early 50's the 250 was introduced with a revised transmission and cabinet, but retained the hatch like lid and red bakelite knobs, similar to that of the 150.
The 350 came out in 1955, which has the large dials on the front, with most of the 350's built bearing a complete stainless steel top.
After the 350, the 251 received a completely revised transmission, which is featured today in the POD in the model WAC-75, and was labeled as the "rugged and simplified mechanism". IIRC the 251 also was the first electronically controlled Blackstone, as the previous models all had a timer driven by the transmission, called the Autotrol. Lastly, early Blackstones had a mechanical water valve, which on the 350 is operated by cables mechanically opening and closing the warm and hot on the water valve.
I have a 350 from Fred G. They are beautiful washers, especially when the two large dials light up. It needs some parts but someday should be washing again.
Fred - please fill in the cracks, I had to miss something!
Ben
350S Blackstone, pictured.
