US520694A - Tongue-switch - Google Patents

Description

(No Model.)

A. J. MOXHAM. TONGUE SWITGH.

No. 520,694. Patented May 29, 1894 L 3 .L Fig. 2. P

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TONGUE- SWITCH.

SPECIFICATION forming part of Letters Patent No. 520,694, dated May 29, 189 4.. Applicationfiled May 13,1893. Serial No. 474,158. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR J. MoxHAM, a subject of the Queen of Great Britain, residing at J ohnstown, county of Oambria State of Pennsylvania, have invented a new and usefullmprovement in Ton gue-Switches, of which the following is atrue and exact description, due reference being had to theaccompanying drawings.

My invention relates to that type of switch in which there is a movable tongue pivoted near one end on a vertical pin and adapted to be so moved that it may serve to guide the car wheel upon either track desired. Switches of this description are usually constructed either by casting the body of the structure in one integral piece or by forming it of rolled rails cut and fitted together and having a chuck or filler interposed between the diverging ends at the place Where the tongue pin is. In the first case a bearing is provided in the casting for the pin and in the latter case the chuck fulfills the same purpose. It is neces sary that the pin should be a good fit in this bearing for if it is loose the point of the tongue is apt to rise and the-efficiency of the switch be much impaired. And again if the bearing is not exactly perpendicular to the surface on which the tongue lies, or if the bearing is correct and the pin not truly mounted in the tongue, the tongue will not lie truly upon this surface nor secure the support intended for it throughout its length. The preparing of the several parts so they shall truly fittogether is expensive and difficult, especially so with boring the bearing in the body of the switch for the tongue pin as this must be truly located and so bored with regard to the surface upon which the tongue lies that the tongue shall lie upon it throughout its length.

The object of my invention is to facilitate the preparation of the switch body for the reception of the tongue and pin and to that end I provide the device hereinafter described.

Referring to the drawings, Figure 1 represents a general top view of a tongue switch of the type described and Fig. 2 is a section, on an enlarged scale, taken on line :r-w in Fig. 1.

A represents the general body of the switch, T the movable tongue pivoted on the pin. 1?.

bearing for the tongue pin.

B is a bushing or sleeve adapted to fit the pin P and L is some substance such as hard white metal or if preferred melted cast 1IO11 or steel interposed between B and O as hereinafter described.

H are holes in the Web of the frame and are for the insertion of bolts securing by splice bars the switch to an adjacent track rail.

My method of constructing the switch is as follows: I cast the frame A having the hole for the pin bearing of considerably larger diamet'er than the pin and having the sides of it corrugated or otherwise roughened as shown. Upon the pin P I provide the bushing 01' sleeve B said sleeve being bored to fit the pin P and its exterior being corrugated or roughened similar tothe interior of O and being of such size that it will enter the hole in O and have a little space around for adjustment as hereinafter explained. The tongue T having been located in place in the switch and the bushing B placed on the pin I pour melted metal or any suitable substance in the space L and so securely fasten the bearing in position. By this device I obviate handling the heavy The portion 0 of the switch frame provides a switch piece upon the boring machine and instead I bore the small bushing B which is much more accurately and conveniently accomplished.

It will be seen that any little irregularities in the formation of the switch body are thus readily compensated for and a good fit of the tongue in the pocket or space intended for it is assured.

If the switch were of the built up type the portion 0 would be formed in the chuck or filling casting.

Having thus described my invention, what I claim, and desire to protect by Letters Patent, is-

1. In arailway tongue switch a bearing for the tongue pin separate from the body of the switch and adapted to be rigidly secured to said body.

2. A railway tongue switch having a bearing for the tongue pin formed by a sleeve or bushing adapted to receive the pin being secured in said switch by means of a retaining material interposed between said sleeve and 10 adapted to receive and afford a bearing for the pin, an orifice in the switch adapted to receive the bushing and means to secure said bushing to the switch body.

In testimony whereof I have aflixed my signature in presence of two witnesses.

ARTHUR J. MOXI-IAM.

Witnesses:

A. J. BRYAN, D. BRYAN.

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