Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 273
ce is in the Marshall Field store. Chicago, abuilding occupying an entire city block. The outfit consistsof a Laidlaw-Dunn-Goidon duplex Underwriter pump connectedby single reduction gearing to a ivaterproof electric motor. The pump cylinders, 8x12 inches, have a computed capacityof 700 gallons per… … Electric Pumps. 275 ELECTRIC-MINING PUMPS. The electric system luis especidl conveniences for minepumping because of its adaptability to long transmissions ofpower; electric power can be transmitted to almost any distance,and the pumps can be supplied with either direct or alternatingcurrent…
Hydraulic machinery · Pumping machinery
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