. Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity . Fig. 24. Giiarini Tapper. 850 WIRELESS TELEGRAPHY 21. Morse 25. When a current is iiassino- tliroiiiili the coils of the electromagnet,the inked disc, which is attached to the armature, is drawn intocontact with the paper and held there until the current ceases; inthis way the dot and dashcode is formed and im-printed on the tape. The above appliancesare the principal ones mak-ing up the ordinary w
. Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity . Fig. 24. Giiarini Tapper. 850 WIRELESS TELEGRAPHY 21. Morse 25. When a current is iiassino- tliroiiiili the coils of the electromagnet,the inked disc, which is attached to the armature, is drawn intocontact with the paper and held there until the current ceases; inthis way the dot and dashcode is formed and im-printed on the tape. The above appliancesare the principal ones mak-ing up the ordinary wire-less telegraph systems, butthere are a number of otherand minor devices utilizedto render more accurate theworking of the instru-ments- One of these is thechoJcing coil, made of along, fine insulated wiredoubled back on itself andthen wound on a woodenspool as shown in Fig. 2(5;these coils are interposedin the local circuits of thereceiver to cut off hicrh-fre-
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