US1249245A - Electric switch. - Google Patents

Description

J. W. TEARE.

ELECTRIC SWITCH.

APPLICATION FILED FEB. a. 1917.

Patented Dec. 4, 1917.

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ELECTRIC SWITCH.

Specification of Letters Patent.

Patented Dec. 4, 1917.

Application filed February 3, 1917. Serial No. 146,418. v

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 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 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 device which is adapted for use in connection with telephones in order to avoid the possibility of interference of a telephone conversation, and to minimize the number of phones on the line.

Another object of the invention is to provide a three-way switch which is so constructed 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 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 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 the switch in use.

Fig. 2 is a detail plan view of the switch,

Iiig. 3 is a side elevation of the switch, ant

Fig. 4 is an edge elevation of the switch 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 insulating material. Attached to the base 1 adjacent one side edge and centrally with relation to the longitudinal edges of said base is a suitable pedestal designated. generally by the numeral 2 which comprises a U-shaped body, the bight portion of which 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 parallel relation and are apertured to receive the pivot bolt 3 to which the switch blades 4 and 5 are pivotally connected. This bolt 8 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 apertured to receive a pivot bolt 9 by means of which the switch blade 10 is pivotally connected 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 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 between 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 contact elements 11 are constructed in the ordinary 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 that should a party at the phone A desire 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 engagement with its respective contact element 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 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.

While in the foregoing there has been shown and described the preferred embodimen% of this invention, it is to be understoo that such changes may be made in the combination and arrangement of parts 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. side edge and intermediate its longitudinal extremity, said pedestal comprising a U- shaped frame, a bracket attached to oneof the arms of said frame, adjacent its upper end, a pivot bolt extending through the arms of said U-shaped pedestal, blades piv- In testimony whereof I afilx my signature oted to said bolt and extending longitndiin presence of two Witnesses. nnll of the base a switch blade ivoted bev twee the arms o f the U-shaped b lacket and JOHN TEARE' extending transversely of the base, and con- WVitnesses:

tacts mounted on the base for eoiipemtion J. W. BELL, With the blades. THOS. G. TEARE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

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