| Show TELEGRAMS WITHOUT WIRES machine that transmits and receives in writing messages from a distance the zera graph is the name bestowed upon a new mechanical and electrical device by means of which me sages by wireless telegraph may be ent or re and ritten cop taken au it is not a ani notion but the invention of an engi hman says a exchange in appear lanceit resemy an ordinary t rewriter pe writer but it la of construct on with a 1 seyboard figured with th ages iges 0 the and numerals which can de printed or felegi ipher to any number of instruments bach instrument the in explains Is at once a receiver anc a transmitter enah ng operator to con ver e with one another ir and this obviating which are aitto occur in telephonic corn m anicat ons so farmes ages have peen sent only for a short d stance but it Is intent d to ent over kiei u ard it Is hope 1 that n ea ages can be ent to any distance that either waves w 11 carry tho is always reidy for te use and as there is EO bechan m which requires to be wound up in order to obtain synchrony syn chron ism tl e operator hais both hands tree tor manipulate manip oa another advant ge cla med for the bertion mer tion will b of especial importance in ari 1 tary affairs Me saes cannot be I 1 id ed up to quote the inventor a own words in enill en ill g a n engage you an two ether waves wh el allow 0 o i oice of 56 slim and these arr her direct print either as letters or fl uns absolute secrecy is th s ob tamed 11 e only way to intercept mes ages wo id I 1 e to employ a similar in strument ment wl ich would have to be yn chrusl ed to lie ame degree as th instrument catl these will their age anico are eiven at u it a aced of word a i IE IP w phout be ini i eri and va id tl us bestjr at i a clecil 1 ex a nal nan re P pr in rue i alo hould 1 e sect at the tin athe mes ago is en chine only v tout wired I 1 av i lecture in pans before the society of civil eng wa er dur n wl ich I 1 sent messages to brus sels while telephonic communication wis boing on 01 er the same wires I 1 hive sent messages also between ber hn inn frani ort consists of a typewriter which by cei c ei res aim pulses eich letter only two imp es and the bained I 1 y mans of the tine arten al be tafe the impulses foiw rf ec pur poes po es ane u imp aises operate a s connection with the induction 1 this inal ing tho apart for ci the ether baies tl e ind action coil is coni doted with an aerial as well as an earth v ire turn tie ap iceo a receiving instrument it is ne cesary to move a switch which is placed beneath the typewriter ehte all tha con to the apparatus appa ratu which consists of a and a very sensitive relay |
