I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
(1) Used 10" x 20" Landis Model 1R Universal Cylindrical Grinder, s/n 905-39, New 1989 Specifications: Nominal swing over table ............................. 10"
Brown and Sharpe No 2 universal Grinder Two Wheel 3" Riser swing 21" x 30" 460 voltage Coolant tank Machine set up for facing parts. MODEL: #2 WHEELHEAD MOTOR ........... 3 HP WHEELHEAD SPINDLE SPEEDS (3) ....
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