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 35
he subscriber responds the operator connects the two lines by inserting the two plugsof a pair into their respective jacks. PLU65 BATTERY BOX 2,128 HAWKINS ELECTRICITY attention of both the customer or subscriber who wishes to com-municate, and the party desired. A call bell usually consists of a… … Fig 2,933.—Interior of call bell box as made by the Holzer-Cabot Co. In operation, thearmature of the magneto is revolved a few times by means of the crank or handle C,(fig. 2,932), and an alternating current of considerable voltage^ compared to that of thebattery, is transmitted to the distant…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-659-395.webp)
