Telephone Transmitter and Receiver Page: 3 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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with increased power and energy. In this
manner they can be reenergized or increased
in volume as many times as desired to send
them any distance whatever by simply pass-
5 ing them through my improved transmitter.
In this manner a great saving can be effected
by using less expensive wires, and a much
more satisfactory result can be secured by
increasing the volume or the amplitude of
io the vibrations at the final receiver, whereby
the conversation is rendered much more dis-
tinct than with instruments now in use. As
the apparatus is entirely automatic, it will
not require the attention of an assistant ex-
15 cept to occasionally renew the strength of
the local batteries.
Having thus fully described my invention,
what I claim as new, and desire to secure by
Letters Patent, is-
20 1. In a telephone-repeater, the combination
with the base having a sound-proof box, of a
receiver arranged within the box, and a
transmitter arranged also within the box, a
conduit connecting the receiver and trans-
25 litter, the diaphragms being adjacent to the
ends of the conduit, an induction-coil and a
battery connected with the transmitter, all
arranged and adapted to operate, substan-
tially as described.
30 2. In a telephone-repeater, the combination
with a sound-proof casing divided into com-Z,449
partments, a receiver in one compartment, a
transmitter in the other compartment, a con-
duit connecting said compartments, said re-
ceiver comprising a diaphragm mounted and 35
insulated from the casing at one end of said
conduit, electromagnets having their poles
in proximity to said diaphragm, a branch cir-
cuit from the main line, divided circuits from
one wire of said branch circuit connected 40
with one terminal of each of said magnet-
coils, and divided circuits from the other
wire of .said branch circuit connected with
the other terminals of said magnet-coils, said
transmitter comprising a diaphragm mounted 45
and insulated from the casing at the other
end of said conduit, opposite said receiving-
diaphragm, a carbon back in proximity to
said diaphragm and granular carbon particles
interposed between said diaphragm and said 5o
carbon back, the primary coil of an induc-
tion-coil connected at one terminal with said
carbon back, a source of electricity being in
said circuit, and at the other terminal with
said diaphragm, and a communicating line 55
or circuit attached to the terminals of said
secondary coil and to the main line, substan-
tially as described.
OLIVER P. SAMMONS.
Witnesses:
T. J. FARLEY, Jr.,
CHAS. M. MILLS.
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Sammons, Oliver P. Telephone Transmitter and Receiver, patent, June 30, 1903; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511280/m1/3/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.