TELEGRAPH WONDERS

Dominion, Volume 12, Issue 201, 20 May 1919, Page 9

TELEGRAPH WONDERS

THE MURRAY PRINTING MACHINE TEE INVENTION OF A NEW ZEALANDKR A recent cable message stated that an experimenter had beeu successful in transmitting spine ten or eleven telegraph • aud telephone 1 messages simultaneously over tha one wire (which means a pair vt wire 3). So far iu New Zea'eaini our acliievements have been limited to Uic quadruiilex, which is capable oi' sending two and receiving two telegraphic messages at tho same time, which is rather a mystifying performance to the laj mind. Details of the latest achievements • and how they have been brought about have not yet come tp hand, but the Government experts are|on the alert to" learn all about it. ilr. A. 13. Slminpton,. Chiel Telegraph Engineer and Director oi Telephones, made a statement to. a Dominion reporter yesterday which foreshadows strange and wonderful improvements in our telephouo aud telcgrapu system, anc that within a year or so. There are thrco • metallic circuits between here'and Palmerston North at present. When thai number is doubled Wellington will be able to comm.unicato by telephone without delay with anyone in the Palmerston North district, and it only 1 needs tilt extension of the metallic circuit system to Hawke'a Bay and Gisborne to put Wellington into "non-delay" telephonio communication with the whole of the subscribers in those districts.- The work would be costly, but Mr. Shrimpton believes that it would pay. At present w> have a system of communicating with these districts after 6 p.m.j but the new system would mean communication at uny time of the day. Another big improvement in telegraph work would, Mr. Shrimpton hoped, bo installed in the chief telegraph offices of the ■ Dominion in about eight months' time. \lt was tho Murray telegraphic printing machine (the invention, by the way, of a Now Zealande'r). With this machino tho message was , dispatched over tho wire by typing it on n special kind of typewriter. The receiver, which was entirely automatic, typed the message in ordinary lettering on forms ready for dispatch to the person to whom tuo message was addressed. The Murray machines were past the experimental stage—they were an assured success, and would within n year or two be in use throughout the telegraphic world. By the beginning of next year he hoped to see them in New Zealand. For yejrsr says Mr. Shrimpton, the Bell Telephone Company, pf the United States, offered a reward of for the person who could produce an effective relay (or booster) for telephone lines, by which tho 6ound of messages, weakened by transit, could be strengthened, or at least the strength of sound maintained. No one lifted the reward, yet, according to Mr. Shrimpton, the very_ thing they were looking for was practically under their nose in the Fleming .valve, which has revolutionised detection in wireloss telegraphy. It wns there before all tho experts for wireless, yet until recently no one had thought ot, applying it to telephony. Now it was being used everywhere relays were needed on telephone wires. One effect of the discover}' of an effective relay was the lessening of cost for copper wire. Without relays the teleI .phone corporations and elsewhere hiul to use. wire weighing 8001b. to tho mile. With relays wire wowhing I 2001b. to the mile could bo used without affecting tho efficiency of the servico. ■'