Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 359
infig. 4,317, in thatherringbone gearsare used in placeof spur gears, thisgiving the advan-tages due to her-ringbone gears,viz.: continuousand smoothaction, elimina-tion of shock,andreduced wear. Fig. 4,317— Dem-ing single actingplunger triplexpump with singlereduction spurdrive. As con-structed… … 3,014 HAWKINS ELECTRICITY
Electrical engineering
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