Lockman Company existed for only 7 years then Lockman designed machines for Wanzer
Wanzer B S# 4 - 2379 Cast Base and Legs Last Patent 1883 Hamilton Ontario
Wanzer A Marble Base Family Sewing Machine, Crank missing C. 1870 Hamilton, Ontario
Wanzer A S#-4317 Marble base Arc Motion Lock Stitch Last Patent Sept 9 1870 Hamilton, Ontario
Wanzer A Cast base Missing slide plate C. 1870 Hamilton, Ontario