Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 45
ite extensively used.One key of this semi-automatic type, shown in Fi<j;. 10, is so designedthat the key button is moved laterally instead of up and down, achange which brings into play a different set of muscles so that theparticular muscles affected by operating the old type key would notbe… … Fig. 10. Semi-Autouiatic Vibroplcx Telegraph KeyCourtesy of J. E. Albricht automatically and uniformly interrupts the current, making con-secutive dots as long as this pressure continues. Such a devicegreatly reduces the number of movements required to send consecu-tive dots, or dots and dashes…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
