Xo. 63 32;>. 



Wireless Telegraphy. 



1049 





63 323 A. 1:13. 



63 323 B. 1:13. 



63,317. Electric Bell for calling . ...... '. .................. 



62.326. Morse Ink Writer, small pattern, cf. Fig. 62,325, p. 959, without cell ...... 



62.327. Morse Ink Writer, with clockwork, on polished mahogany board, Figure on p. 959 

 63,319. - - i d e m, with one bell and two switches combined on one board, Figure. . 

 61,147. Morse Key, Fig. on p. 868 .......................... 



63,323. Complete Wireless Telegraphy Demonstration Apparatus after Prof. Braun, Figs. A 

 and B. without induction coil, -Morse key. Morse wiiter, or cells .......... 



The transmitting station contains a spark gap, a Leyden jar battery, a transformer, and a mass 

 2.5 m high with transmitting wire and an anti-capacity for same. The mass is constructed of bamboo, 

 being composed of three parts which can be inserted in each other. The jib at the end of the mass 

 t\v<> pulleys in order to allow of the transmitting wire being drawn up. 



The receiving station, in addition to containing the mass with the receiving wire and anti- 

 capacity, has an oscillation circuit formed of a condenser and self-induction coil, the coherer, the 

 relay, a bell, the tapper and a small auxiliary condenser. 



An induction coil having a spark-length of only 30 mm is sufficient to work the apparatus. 

 Complete description is appended to each apparatus. 



As Morse Writer No. 62,327 can be used or, better still, the following: 



(>:.'. .".29. Standard Ink Writer, Figure, with detachable spring drum, horizontal paper roll in 

 the base (which can be removed), on polished mahogany socket .......... 



62.332. Extra price for Automatic Release, very practical ............... 



63,325. Coherer Tester ............................... 



s. d. 



0. 4.0 



2. 0.0 



4. 0.0 



5. 0.0 

 0.10.0 



26. 0.0 



12.10.0 

 1.10.0 

 1. 0.0 



Cl. 3049,3049'. 



