Electric Switch Page: 2 of 3
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
JOHN W. TEARE, OF KIOWA, TEXAS.
ELECTRIC SWITCH.1,249,245.
Specification of Letters Patent.
Patented Dec. 4, 1917.
Application filed February 3, 1917. Serial No. 146,418.
To all whom it may concern:
Be it known that I, JOHN W. TEARE, a
citizen of the United States, residing at
Kiowa, in the county of Lipscomb and State
5 of Texas, have invented certain new and
useful Improvements in Electric Switches;
and I do hereby declare the following to be
a full, clear, and exact description of the
invention, such as will enable others skilled
10 in the art to which it appertains to make
and use the same.
This invention relates to new and useful
improvements in switches, and the principal
object of the invention is to provide a de-
15 vice which is adapted for use in connection
with telephones in order to avoid the possi-
bility of interference of a telephone con-
versation, and to minimize the number of
phones on the line.
20 Another object of the invention is to pro-
vide a three-way switch which is so con-
structed as to readily cut out one line or
other line and which is also arranged so that
the two lines may be connected to the switch
25 or thrown out of operation.
A still further feature of the invention is
to provide a novel form of switch and means
for securing said switch to the base block.
With these and other objects in view the
30 invention consists in the novel combination
and arrangement of parts which will be
fully set forth in the following specification
and accompanying drawings, in which:
Figure 1 is a diagrammatic view showing
35 the switch in use.
Fig. 2 is a detail plan view of the switch,
Fig. 3 is a side elevation of the switch,
and
Fig. 4 is an edge elevation of the switch
40 taken at right angles to Fig. 3.
Referring to the drawings, 1 designates
the base of the switch which is formed of
porcelain, slate, or any other suitable in-
sulating material. Attached to the base 1
45 adjacent one side edge and centrally with
relation to the longitudinal edges of said
base is a suitable pedestal designated gen-
erally by the numeral 2 which comprises a
U-shaped body, the bight portion of which
so is attached to the base by a suitable bolt.
The arms of the U-shaped body are offset in-
wardly and extend upwardly in spaced par-
allel relation and are apertured to receive
the pivot bolt 3 to which the switch blades
55 4 and 5 are pivotally connected. This bolt3 extends through the bight portion 6 of a
U-shaped member 7 the ends of the arms of
which are bent inwardly and extend in
spaced parallel relation as at 8 and are aper-
tured to receive a pivot bolt 9 by means of 60
which the switch blade 10 is pivotally con-
nected to the pedestal. The bight portion
of the element 7 is positioned so that its
inner face engages the blade 5 while its
outer face engages one of the arms of the 65
U-shaped vertical tube and this element 7 is
secured in place by means of the pivot bolt 3.
Cooperating with the switch blades 4, 5,
and 6 are suitable contact guide elements
designated generally by the numeral 11 be- 70
tween which said switch blades are adapted
to engage and these contact elements are
provided with the binding screws 12 through
which the wires are connected. The con-
tact elements 11 are constructed in the ordi- 75
nary approved form and are positioned so
as to engage the switch blades as clearly
shown in Fig. 2.
In use, the switches are placed in the line
as illustrated in Fig. 1 and it will be seen 80
that should a party at the phone "A" de-
sire to talk with a party at the phone "B"
the switch blade 4 of the switch 1 connected
to the phone "A" is thrown out of engage-
ment with its respective contact element 85
thereby disconnecting the phone "C", in
this way it will be seen that any possibility
of the party at the telephone "C" hearing
the conversation will be avoided and also
any interference occurring on the line to the 90
left of the phone "A" will be cut out. It
will be understood that if so desired the
switch blade 5 of the telephone "B" may be
thrown out, thereby disconnecting the line
to the right of the telephone "B". 95
While in the foregoing there has been
shown and described the preferred embodi-
ment of this invention, it is to be under-
stood that such changes may be made in
the combination and arrangement of parts 100
as will fall within the spirit and scope of
the appended claim.
What is claimed is:
In a switch of the class described, a base,
a pedestal attached to said base near one 105
side edge and intermediate its longitudinal
extremity, said pedestal comprising a U-
shaped frame, a bracket attached to one.of
the arms of said frame, adjacent its upper
end, a pivot bolt extending through the 110
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Teare, J. W. Electric Switch, patent, December 4, 1917; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1257254/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.