G.B. is Gladstone Blake Crandall. G.B. Crandall was granted U.S. Patent No. 862,717 on August 6, 1907, for a rifle sight. He filed application for the patent on November 13, 1906. His residence was listed as Cherry Valley, County of Prince Edward, Ontario.
Crandall is believed to have assembled 551 Tobin Guns from parts, some as late as 1951. Crandall serial numbers reportedly range from 18,976 to 19,526. Some of these guns are quite good and others leave a lot to be desired. Some of the last were fitted with coil springs mounted on a cocking rod instead of the floating V-spring, the main feature of Wollam’s design. Crandall is more noted as a riflemaker and is mentioned several times in Charles Landis’ book Twenty-Two Calibre Varmint Rifles. After he retired, great quantities of Tobin parts were hauled to the dump and many a local lad collected enough to assemble a gun, but few ever did. I was told by locals in Woodstock that after WW-II G.B.'s son moved down to Windsor/Detroit for higher paying work in the auto industry.
