Catalogue "C" of pumps and hydraulic machinery for every service .. (1903)
Goulds manufacturing co. [from old catalog] · [Seneca Falls, N.Y.?] · leaf 159
ther and fit their case perfectly. It is also a point worth noting that if a little good oil be put into thecase of our Pumps before and after using at first, or simply pump air with this oil a few times, the cams become as hard upon the surface as fine tempered steel, and are almost unaf-fected bv… … Fig. 300 Sectional View Power Rotary Pump
Pumping machinery
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