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 53
wn in fig. 3,819is so drawn that every part can be seen; it does not representany particular machine but is intended to give a clear idea ofhow the film is fed across the film gate intermittently and thesynchronous operation of the shutter whereby the light is cutoff from the screen during each… … <a C1 S) c 1? ° Ja £ o 9? g*£§^^ 3* e 3g rt« 2 a £^ c o>-g cfl< cO g^^ - eco 3*° &s •£ 50 ^ CO >>t0 o<cs u\ti g*S w g!T8!&«> §.!^SS3 ^ c0_ ^ftc ^ S fc.SPSPfc rt P SJls ODw 1/5 ac ^£,d ^C CO bow 3 £ fc & S « o co^Sd 043 boo o d 05 2 m w 2 w O wjP tt+3 glials* 3 CO…
Electrical engineering
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-453-304.webp)
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