US1423005A - Railway switch - Google Patents

Description

Patented July 18, 1922.

Inventor.- JOHN T M00 95,

finesses:

JOHN T. Moonn, or ATLANTA, enonera.

RAILWAY swr'rerz.

To all whom it may concern Be it known that I, JOHN T. Moonn, a citizen of the United States, and resident of Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Railway Switches, of which the following is a specification.

This invention relates to railway switches and more particularly to railway tongue switches, and has for its object the prevention of the loss of energy due to arcing between the switch tongue and the switch body.

Another object of the invention is to pro vide a switch of the class described, provided with an electrical bond of high conductivity intimately attached to the switch tongue and the switch body.

A still further object of the invention is to provide a switch of the class described having the novel combination of parts described in the following specification and claims, and illustrated in the accompanying drawings in which- Figure 1 is a plan view of a portion of a switch structure embodying my invention.

Figure 2 is a sectional elevation on the line II-II of Figure 1.

Figure 8 is a sectional plan on the line III-III of Figure 2.

Referring more particularly to the drawings, the numeral 2 designates the switch body as a whole which has the usual tread and guard surfaces, and is provided with a tongue bed 3 having a circular recess 4. adjacent its rear end. A switch tongue 5 is mounted in the bed 3 and is provided with an enlarged circular heel 6 adapted to fit snugly within the recess 4. A lug 7 projects from the bottom of the heel 6 and is adapted to pass through a suitable aperture in the bottom wall of the recess 4 and into a suitable recess 8 below the tongue bed.

A suitable lever 9 is mounted in the recess 8 and is fulcrumed on a projection 10. The lever 9 has one end forked as at 11 to fit around the projection or lug 7 on the switch tongue 5, and has its other end provided with a boss 12 which is threaded to receive a screw 13 having a jam nut 14; thereon.

The recess 8 has a portion thereof opening through the upper face of the switch body at 15, and a suitable cap 16 is provided for closing this opening. The cap 16 has a socket 17 in its under face adapted to fit Specification of Letters Patent- Patented July is, 1922.

1922. Serial No. 561,321.

the head of the screw 13 and accidental "turning thereof.

In order to preventthe loss of energy between the switch body and switch tongue, I provide a flexible bond 18 of high conductivity which has one end secured to the lug 7 by welding or otherwise as'at 19, and its other end ;is secured tothe switch body 2 thus prevent as at 20 by welding orotherwise. The bond 18 is preferably composed of flexible copper strands laid up spirally, although any suitable material and construction may be used. However, the bond should be of sufiicient length to permit attaching or securing the ends to the lug 7 and to the switch body before the switch tongue 5 is mounted in position. After the bond 18 is secured to the lug 7 and switch body 2, the bond is passed through the aperture in the bottom wall of the recess 4 and forms a coil in the recess 8.

Experience has shown that 80 per cent of energy is saved by providing the bond 18 between the switch tongue 5 and the switch body 2.

While I have shown and described only one specific embodiment of my invention,

various modifications will readily suggest themselves to those skilled in the art, and may be made without departing from the scope of my invention as defined in the appended claims.

I claim 1. A switch comprising a body portion, a movable tongue mounted on said body portion, and means for electrically bonding said tongue to said body.

2. A switch comprising a body portion, a movable tongue mounted on said body p0rtion, and a metallic bonding member secured to said tongue and to said body portion to form an electrical bond between said tongue and said body.

3. A switch comprising a body portion, 7

5. A switch comprising a body portion, a. movable tongue mounted on said body por tion, and a flexible metallic bonding member secured to said tongue and to said body portion, said bonding member having a relatively higher conductivity than said switch.

6. The combination with a switch comprising a body portion having a tongue bed therein, and a movable tongue mounted in said bed and having a downwardly projecting lug extending through a suitable aperture in the tongue bed and into a recess below said bed, of a flexible bond secured to said lug and to said switch body, substantially "as described.

7. A switch comprising a body portion having a tongue bed therein, a movable tongue mounted in said bed, means for holdin the tongue in said bed including a downwardly projecting portion and a flexible bond secured to said projecting portion and to said switch body.

8. A switch comprising a body portion having a tongue bed therein, a movable tongue mounted in said bed, and having I JOHN T. MOORE.

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