US513781A - Automatic eaiewat switch - Google Patents

Description

(No Model.) 2 Sh'8t8--Sheet 1.

- 'D. B. HART. p

I AUTOMATIG RAILWAY SWITCH.

No. 513,781.. Patented Jan. 30,1894.

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(No Model.) 2 Sheets-Sheet 2. D. B; HART. AUTOMATIG RAILWAY SWITGH Patented Jan. 30,1894.

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UNITED STATES PATENT IFFICE.

DAVID B. HART, on NEW YORK, N. Y.

AUTOMATIC RAILWAY-SWITCH.

SPECIFICATION forming part of Letters Patent No. 513,781, dated January 30, 1894. Application filed October 7, 1893. Serial No. 487,407. (No model.)

To all whom it may concern.-

Be it known that I, DAVID B. HART, of the city and county of New York, and State of New York, have invented a new and useful ImprovementinAutomaticRailway-Switches,

of which the followingis a full, clear, and eX-' plicity, certainty of operation, ease in workmg, and cheapness combine to render it a valuable improvement upon any hitherto devised.

For the better understanding of my invention, I have prepared the accompanying drawings to which reference is hereinafter made.

In the drawings similar letters represent like parts.

Figure l is a plan view, showing the rails, switch and operating device. Fig. 2 is a vertical longitudinal section of the same. Fig. 3

/is a plan view of the under side of the operthe line 6-6 of Fig. 4. Fig. 7 is a vertical section on the line of 7-7 of Fig. 5.

Figs. 8 and 9 show an alternative form.

As will be seen, my device consists as hereinafter described and claimed of a switch point operating device set-in the ground and so arranged that rods carried on the front platform of a car may be brought to bear upon curvedthrusting levers adapted to receive them, whereby the switch point is moved to the right or left as may be desired.

In the drawings, A A are the rails of the main track; A A of the turn-out.

B; is the solid frog or plate which is firmly fixed on the side opposite the direction of the turn-out.

B is the movable switch point which opens or closes the siding.

(lis the solid cam which is rigidly united with the point B and lies directly beneath it. This cam O is provided with the inclined faces 0 and c which are acted upon by the push rod D. D.

E. is the bed plate on which B and O are pivoted and the outer side of which serves as the rail for the siding when opened.

H H are the curved thrusting levers which actuatethe rods D D. These levers are so curved that their upper portion projects above the level of the bed plate F. The pivots h h support these lovers in the bed plate F, and the pins 75 7t connect them with the rods D D. The springs d d, which are fastened to the bed plate F by the bolts 61 (1 return the levers H H to their position in contact with the plate F after they have been depressed by the rods J or J.

The rodsJ J are secured inthe platform P of the car between the plates 19 and p which are united by the bolts M M. They are united by the double armed lever S so that the depression of either rod by the cam L will cause the other to be raised correspondingly.

G. is the handle which is rigidly fastened to the vertical shaft g, to which the carnLis fastened. This cam is so arranged that its bearing surfaces act against the ends of the depressing rods J J and project them downward. The rollers j j lessen the friction of the contact with the curved levers. In the alternative form, I substitute a cross yoke c or lever in the place of O and pivot the curved levers H at It so that when depressed they thrust out the rods D through the interven- 5 The operation of my device is as follows:

As the car approaches the siding, the person in charge moves the handle so that the cam L shall depress the rod desired. When the car reaches the curved levers H and H the roller j or j will come in contactwith the lever inalternate lever mustbe depressed and the switch point moved accordingly.

I have. given two forms of construction of my device, but other slight changes in the details might be made without departing from the spirit of ,my invention.

.Having thus set forth my invention, what .Lclaim asnew, and desire to secure by Letters Patent of the United States, is-

.1. .Thccombination with a movable switch point of a subjacent lever rigidly united thereto, and provided with inclined faces, .cnrved .thrust levers projecting above ;the .plane 0f& the bed plate in which they are pivoted,,and suitable rods connected withthe same and adapted to operate against the said inclined faces, substantially as described.

. 2. The, combination with tracks for street cars of a movable switch point, ,a lever rigidly united to said point and provided with inclined faces, wedge acting rods adapted to act against said faces and means whereby such rods may be operated from the platform of a car located upon said tracks, substantially as described.

3. The combination with a movable switch point of alever rigidly united thereto and provided with inclined faces, curved thrust levers projecting above the plane of the bed plate in whichithey are pivoted and wedge acting rods connected at one end with such. levers and adapted at their other ends to operate against the said inclined faces, substantially as described.

4. The combination iWilBll a movable switch point provided withta subjacent lever rigidly united thereto .and provided with inclined faces of-wedgeacting thrust rods-adapted to operatezagainstisaid faces, thrust levers connected with said rods, operating 'rods :arranged upon :a car ,platform-and adapted to operate said thrust levers, and mechanism} for operating said Prods, substantially as described.

DAVID B. IIIART.

Witnesses:

T. D. I-Ioncns, -SALMER COVHIP.

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