Wheeling Sunday register. [volume] (Wheeling, W. Va.) 1882-1934, 1892-11-13
HOW 1T Is DONE.


biblt before capitalists and scientific
experts.
HOW 1T Is DONE.
The method is simple. On the smell
of the ordinary Bell telephone Is row
OF kcYs marked hundreds, tens, units,
and a release key. The subscriber who
wishes TO place himself in cOmmunlca-
tien with some one Of the other sub
scrlbers taps on the desired number on
the keyboard, which automatically con-
meets his wire with that OF the person
with whom he wishes TO speak. Sup
nose, for instance, that subscriber
wishes to communicate with NO. l25.
He simply presses the key marked nun
dreds once, the key marked tens twice,
and finally the key marked units three
times. His wire is then In electrical
contact with that OF subscriber l23, ana
he can ring the bell and converse with
him in the same way and with as much
ease as II he had been wranging with
central FOR five or ten minutes.
The means by which this Is accomp-
lished IS not as simple as the method.
The whole mechanism takes up Il space
OF 6x4x4 inches. This piece OF appa-
ratus is placed In the central exchange,
and takes the place Of the ordinary tel
ephone girl. As for the subscribers
end of the line, there is nothing more
there than the ordinary telephone with
row OF keys upon It's shelf. The
mechanism at the station consists chief
" OF a circular disk constructed OF hard
rubber, or any other suitable non-con-
ducting material, and this Is the central
fosturo OF the machine. The disk is
provided with perforations In cir
cu!ar rows OF one hundred each, these
rows being about One-twentleth OF an
inch apart. Through these perforations
extend the wire connections TO the main
line wires, so that the wire OF every
subscriber in the exchange comes 10 his
instrument and passes up through one
OF the perioratioHs, ending In good
metallic contact slightly raised ABOVE
the face OF the disk. A circuit-closing
arm is made in parts, OF which one Is
circuit-olosing sleeve firmly attached TO
the lower end Of sleeve rod. Within
the circult-closing sleeve is closely fitted
cIrcuit-closng needle held In such
manner as to be in perfect electrical
contact with the wire terminal by a
spring. A rod Is located along the axis
of the cylinder, aud is free to rotate and
move longitudlnalIy. The lower end Of
this rod is sleeved and into this is In
serted the upper portion OF the ratchet
rod to have longitudinal motion only,
thereby keeping the ratchet teeth con-
tinuously toward the attendant pawl.
The ratchet rod is provided outside OF
the cylinder and conveniently below II
with q series Of ratchet teeth, oy means
OF which the rods are moved Longitude
nslly.
PRESS THE BUTTON.
Two wheels, through which the rods
extend with feather and groove con-
pection, are made in contact with the
ratchet teeth and levers having pawls
piyoted in their ends. Each lever has a
yibratory movement, and IS oscillated
by the alternate energiZing and deener-
giving OF an electromagnet, thereby i'm
narting motion To It's adjacent ratchet
! teeth, and consequently the circuit clos
ing needle. Each pressure OF the push
button at the exchange, made az the
will OF the operator, causes through the
channels thus described, the circuit
closing needle TO move from row 70 row
and from wire 10 wire.
When any supposed conversation Is
ended the person hangs W his ear
phone and presses the release KEY. This
causes the magnets TO De energized, at
tracing the armatures, thereby with
drawing their several parts from their
engagement with the rachel teeth and
allowing the circuit closer 70 fall out
and return 10 It's initial point.
TIE subscriber is never isolated fro.i
the exchange. Suppose that two per-
sons are in Communication with esch
other, and third wishes TO speak with
| the FIRST. He caa tap up the number
aad make sufficient connection 70 ring
| his bell and call his attention 70
the fact that some one wishes 70 speak
TO him, so that the first subscriber can
az will release his instrument from
the one with which he Is Ia connection
and connect witbythe third man, or he
can continue hfs own conversation until
/ finished, when, upon pressing the re-