A friend loaned this to me. He says its a picture of Dodge Brothers Crankshaft Building.
I think the same picture is on page 88 of Tin Lizzie by Stern.If it is Dodge Brothers it would be early or before the split? Mabey a look in The Ford Methoids and The Ford Shops? Bud.
I was amazed how many places my 12 had circle DB on the parts. Some of them were the fly wheel, Con Rods, spindles and many other places. The brass spider on the steering wheel does not have the circle DB is has the entire DODGE BROTHERS stamped on the spider. The dodge Brothers is hidden by the steering wheel nut. Other places I just remembered is the fire wall brackets and the front axle
I think Dodge Brothers supplied all the Model T crankshafts until 1914, perhaps a bit later. The one that broke in my '12 was a DB part:
I don't know about the USA date but 'The Story of the FORD in Canada' states that, the machine shop was, devoted to machining cylinders, pistons, crankshafts, crank cases, gears and small parts like cam shafts and transmissions. The year, 1912.
I'm not saying that Dodge Brothers were not making them as I think Canada was using Dodge parts well after the US stopped, out of several 1916 blocks I have, are all still Dodge inside. The Heat treatment Building, Canada. 1912