Have little time this morning (an auction is calling) but here are a couple of ids from Rathbone vol 1.
Syracuse Z2 is from Syracuse Chilled Plow Co which eventually became part of John Deere. Page 448
Oneida is from Oneida Steel Pulley Co of Oneida,NY page 362 and P4185 is from Cockshutt Plow Co. page 107.