Questions and answers on pumps and pumping machinery (1912)
Wakeman, William Henry, 1855- [from old catalog] · Chicago, The Joseph G. Branch publishing company · leaf 66
ding, but it is fitted with three impellers. 207. Q. Are these parts sometimes called byother names? A. Yes; they are known as lobes, or wings. 208. Q. Describe the action of these pumps. A. The space in front of each lobe, or wing, isfilled with water, which is pushed along in advanceof it until… … FIG/51 56 QUESTIONS AND ANSWERS ON A. Because the water that is sent in advance ofone comes in contact with that sent along by anotherwhich is going in the opposite direction. As the twobodies meet they must go somewhere, hence they turn
Pumping machinery
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