117 photos
Just think how long it took to hand draw all the technical components to each governor.


John Herschel created the blueprint process in 1842.
GLOB MILLS BLUEPRINT, CIRCA 1899.
More donated vintage blueprints of hydro turbines.
Prime Mover Control blueprint drawing history.
Prime Mover Control blueprint drawing history.
Historical notes on the Woodward compensating type water wheel governor.
PMC blueprint history.
Blueprint drawing history saved from the trash.
WOODWARD GATE SHAFT OIL PRESSURE GOVERNOR HISTORY.
WOODWARD GATE SHAFT OIL PRESSURE GOVERNOR HISTORY.
Woodward Oil Pressure Relay Valve Water Wheel Governor history.
ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR '' GATESHAFT'' TYPE.
Blueprint drawing history saved from the trash.
Prime Mover Control blueprint drawing history.
Blueprint drawing history saved from the trash.