Arizona republican., 1906-07-10
TELEPHONE THAT TALKS
 NEW OFFICE EQUIPMENT
An Invention O( Valdemar PauIsen
 the Edison of Denmark.

Wireless telegraphy has prepared us for almost any kind of inventive wiz ardry. But the Danish Edison" Naldemar Poulsen, has come forward to prove that there are things quite as mysterious as aerograms. For a demonstration of this fact, one has only to talk into the receiver of the Poulsen "telegraphone,'' have his words invisibly registered upon the wire or disc that takes the place of the wax re cords of a photograph. and then hear his remarks repeated with a dis tinctness that is startling.
 So far as the untutOred observer can
 see, there is nothing about the mechan- ism of the telegraphone to account for it's performances. In a photograph it is easy to follow the convolutions of the steel pin scratching it's way about oyer the wax cylinder or tracing q devious path in the grooves of a per manent hard-rubber record. There is nothing so obvious about the Poulsen machine.
 In this the voice is recorded in the form of electrO-magne impressions
 upcn a thin steel disc or wire, one
 hundre dth of an inch in diameter
 There is not a scratch, fndentation. or mark of any kind to indicate that the
 z.
 But start the reproducing mechanism
 going, pick up the ear piece and the
 apparently blank record gives forth
 whatever has been talked into it.
 There is no scratching sound, the words coming from the machine as
 clearly as from a human throat. The faintest whisper, or even heavy breath
 ing is recorded and reproduced in the same way. The record is autOmatical- ly erased by stronger magnet as a new record is put on, or the record | can be permanently retained for fu- ture reference.
 YANKEE HELPED TO MAKE MA CHINE PRACTICAL.
 When it's invention was first an- i nounced, the telegraphone attracted
 much attention from electrical experts and the physicists. Sir William Preece | said that it marked an era in the in vestigatiOn of the molecular character 1 of all magnetic and electric operations. Lord Kelvin, Tesla, Marconi, Prof | Silvanus Thompson and others bore tes- l timOny to the extraordinary perfection l of the recording and speaking tele- | phOne.' Technical papers described it's wonders, and then for a period but lit | tie was heard of it. But all the time l the inventor, dlueu Dy American eX- | perts, has been transforming his ex- perimental model into a thoroughly l practical piece of office equipment, for which the demand has already outrun | the supply. An American company 1 has been formed to control the inven- tion. which promises to make as many | fortunes as were made by the Mergen- | thaIer typesetting machine.
 The principle of operation is the | same in the wire and disc machines i the main difference being that with a l mile or two of fine steel strands, com pactIy wound on d spool. the capacity bis greatly increased. A single spool of
 wire allows for half an hours contin- uous dictatiOn.
 1 For correspondence purposes the i beauty of the telegTaphOnic is that the | typewriter operator can transcribe at
 any distance from the recording in
 ,strument, that is. any distance cov- l cred by the scope of the telephone. | There is no carrying about of records
 or cylinders. All the typist need do is
 to take up his end of the connecting | wire, press a button and proceed to put into type the words that come 1 through the receiver from the machine which may just as well be a hundred