I'm seeking information on this Craftsman pipe threading set. The information I'm seeking is more specifically; who made it (my hunch is Reed), in what time frame it was made (my hunch is between 1923 and 1939), and the type of thread it would render (NPT?).
The earliest Craftsman pipe threading reference I've found was in a Craftsman catalog dated 1939. 1939 does list several pipe threading sets - all of which would appear to me as newer types (round dies and square dies). I would like to better understand if this assumption of being pre-1939 is correct. The patent markings (1656596) date to an issuance of 1923.
I would also like to confirm the holder/handle that would have been original to this set. I'm inclined to believe it is one where a square bolt is used to lock the dies in place (by nature of the wrench included). Also note the wrench itself in the case you might come across it and struggle with it's purpose. The wrench is NOT marked.
I'm assuming the 1/2" die set is the set that is missing given the 1/4", 3/4", and 1" set being present. I would like to be able to confirm this is the case.
Lastly, I'm curious as to why the inclusion of the square shaped die. It just doesn't make sense to me in the context of this set.