I was elated to find this L.S. Starrett ratchet this morning at the flea. It is heavy, robust, and extremely well-built. The patent date (Jan. 11, 1916) refers to 1,167,948. It belongs inside the elegant, sophisticated, large wood boxed sets they made in the 'Teens, to include those issued to the US Army's Model 1918 Artillery Repair Truck. I have not been lucky enough to run into the whole set or even a partial set in the wild and this is the first and only piece I have ever found.
Like early Charles Miller and Syracuse sets it has a 5/8-inch drive female opening, which takes 5/8-inch male drive tang sockets. The innards are flame treated. I also included a shot of the captive pawl, which is beveled, and attached to a long shaft terminating in that knurled knob on the end. To change directions, you pull out to release it from the gear, twist 180*, and let go.
It wouldn't turn at the flea, but it disassembled easily on the bench. (No spring to lose!) Stuck with hard grease, it moves like butter now that it has been cleaned and freshly greased.
There are a few others scattered on the board, and I thought there was at least one No. 443-A or -B set, but I could not find it in a search. Probably not identified in text.