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 97
Fig. 50. Morse Key Tape Puncher for Delany Telegraph the name properly applies to several forms of apparatus, each mark-ing a distinct advance in the art. The inventor has applied his long 79 70 MODERN LAND AND SUBMARINE TELEGRAPHY telegraph experience and exceptional ability not solely to… … Fig. 51. Delany Keyboard Tape Puncher of importance in relation to these, which, however, cannot be heredescribed. The earlier methods of automatic working were defective inseveral respects and, although some of them afforded good ser\ice, itmay well be cpiestioned whether they would prove equally…
Electrical engineering
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