YEAR 1968. ORDER NO. C-1159. CUSTOMER # 22335. STAINLESS STEEL ADJUSTABLE TIP, OPEN-ENDED ROTOR. U.S. MOTORS REPLACEMENT DRIVE: 1 HP U.S. ELECTRIC MOTOR, 1750 RPM, 208-230/460 VOLT, B143T FRAME. RIGHT ANGLE GEAR REDUCER, 39:1 RATIO. CHAIN DRIVE WITH GUARD.