Mexico weekly ledger., 1908-07-30

she telephone has become con-
place through daily usage. F,...
seresk however, is likely to be ,,o.l
IN is wonderful possibilities h
invention, Of which a demops,,,sA
has just been given by It's Inv'".s
The inventor is a German. H..
Gustav Grzanna, and his mIs,io.
this country Is an outcome Of In y.
patent laws His marvellous aO0,,'.
Us has already been exhibited n ~
many, where 1t has aroused u,o,0as,
interest.
Herr Gizanna can transmit b,aI
writing, sketches, etc. over an ~
nary telephone wire for cOnsIdsns.
distances and within the period d
few seconds, thus making a Cana
cradle advance on the old system !
electric writing at a distance. n.
uses a low tension current, viz. tv.,'.
volts In the transmitting and NJ
ceivl0g boxes His apparatus can
made an auxiliary Of common +.
phone communication, and. ths,.
fore, It's . commercial utilization !.
ready TO hand. il
ARTISTS MAY SEND PIcTuRu
Herr Grzanna's messages are pass.
through as fast as they are vrIt,,s
and the transmittel uses the Ueus
naturally. Other systems reopI.|
somewhat laborlous handling Of NJ
transmitting mechanism, 50 that n
takes about half an hour to send AL
receive even a short sentence n
fact, the Grzanna instrument Il M
autographlc double Of the voice In
ephonic communication. One can N
tuaily speak and write or draw a. M
same time through the same yIrs|
the telephone being connected Will
the apparatus through a condeuSl
Of two microfarads.
Say an engineer is ordering msterh|
BY telephone from a manufacturer. nj
can furnish plans OF the bolts, platd
rails, ETC., ETC., which he reQuIru|
Similarly a ne wspaper artist a1
sketch an event on the spot-a nN|
way disaster, for instanoe-and tnul
init II 10 his editor hundreds Of mid
away, accompanying 1t with a VERDI
description as he draws; or, II The cT|
respondent be q reporter, be can mad
use Of a photograph by tracing tsouA
lines. In military operations, mad
plans, or diagrams illustrating Id
enemy's movements as they uniod
themselves can be wired back TO bead
quarters.
NOW THE INSTRUMENT WORKS
This wonderful system Of telAuMl
rapby is accomplished by mems Of
light ray travelling over sensltlzed ID
per. The graphite pencil at the trans
mltter end has two electrical CONTACTS
one for horizontal aud tne other ID
vertical movement, a curve bend
made up Of the component parts q
one or the other. On taking the ped
Gil from of its rest a tiny electro
glow lamp In the receiver box Is d
Illuminated. The light from this lanI
Is conducted TO a prism, from Whel
1t is reflected on two little piyOtei
mirrors, one OF which correspond
with the circuit of horizontal move
ment and the other with that Of tb.
vertical.
The light ray produced by the uill
rors is absolutely Identical with tns
movements Of the point OF the pencil
and 1t is thrown upon the sectionOi
spool OF sensItIzed paper set to recslV4
it. By Infringing the attachment 4
the receiver box containing the phCtcI
graphic film and substituting focus
ing glass the evoIutious Of the llgh,
ray can be watched. 1t appears as
tiny plnhead OF light travelling In y
directions over the g~lasS-really inI
tating exactly the handwriting 4
drawing Of the transmitter.
EVERYTHING is AUTOMATIC.
On laying the pencil down the lamp
is extinguished and a little electro
motor pushes forward the SenSitlisiI
paper, on which the message has lusI
been photographed, passes it thFoagiI
a chemical bath In which 1t Is deVsf1
oped, and In ten seconds the Wrltl11
or sketch becomes visible, while 90
other film is unwound from the SpNI
and placed 10 position TO receive Ins
next message. All these processes ~
automatic. The receiver has but y
cut OH the film bearing the message
and DIX 1t 10 the Photographic sense
The instrument cannot lie. No
mistake as to the terms Of orders %
figures is possible. The tranSmlIIei
has his own message as be wrote " y
act as q voucher. This telautogEapa
permits OF one more refinement q
wishes to communicate with b Ol
telephone, but B Is not at bis once
All that A has TO do is to write la
message. When B rettsnS be looks y
bis apparatus to see II any messages
have come for him dnring bis aoSenVs'