The Columbia Engineer: Transactions of the Engineering Society of Columbia University

alternating current angle ASPHALT belt boilers BUILDING carbon CEMENT cent circuit coal coefficient of friction combustion Compressed Air compressor cooling copper cost crank cubic feet cylinder depth of notch diameter direct current DRILL dynamo efficiency electric energy exhaust expense explosion friction gas and air gas engine guide curves hardening heat horizontal horse power Hydraulic ignited inclined member increase intercooler iron joint length of shearing loss machine machinery MANUFACTURERS mechanical efficiency metal method minute motor non-productive labor oil tester Otto cycle P₁ passes PATENT pipe piston plant plate pressure produced Prof pulley Pumps reheating revolutions revolutions per minute Roentgen ROSENDALE shaft shearing plane sheet shown shows speed square inch station steam engine steel Street stroke surface Surface Condenser temperature tube ultimate resistance valve velocity vertical volts volume Watt hours wheel wire York City