US306364A - Tenths to james n - Google Patents

Description

(N0 Modeli) 2 Sheets-Sheet 1. V L. TEVIS.

SAFETY GATE FOB. GAR PLATFORMS. No. 396,364. Patented 001;. 7, 1884.

N. PETERS Phnlo-Lrlhognpher. Washington, a. c.

2 Sheets- Sheet 2-.

(No Model.)

B. L. TEVIS.

SAFETY GATE FOR GAR PLATFORMS.

Patented Oct. 7,1884

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EDXVIN L. TEVIS, OF PHILADELPHIA, PENN SYLVi- KIA, ASSIGNOR- F THREE 'ljENT'HS TO JAMES "WHELEN, OF SAME PLACE.

SAF ETY 'GATE FOR CAR PLATFORMS.

SPECIFICATION forming part of Letters Patent No, 306,364, dated October 7, 188%.

Application filed August 7, 1984. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWIN L. TEvIs, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Safety-Gates for Railroad-Gar Platforms, of which the following is a specification.

The object of my invention is to provide a railway-car with gates for automatically clos- [0 ing the entrances to the platforms when the car is in motion, the obstructions being re moved when the car stops. This object I attain in the manner hereinafter set ibrth, reference being had to the accompanying drawings, in which Figure 1, Sheet 1, is an end view of part of a railroadcar with my improved gate and its operating mechanism, the platform and steps being in section and the gate being open; Fig.

2, a longitudinal section on the line 1 2, Fig. I; Fig. 8, the same with the gate closed; and Figs. 4 and 5, Sheet 2, views of modifications of the invention.

A is part of one of the platforms of a rail- 2 5 way-car, and B the usual steps at the end of the same. Beneath one of the steps (the highest step in the present instance) is hung a frame, 1), which is provided with a number of curved or scoopshaped wings or blades, to a, the wings a facing in one direction and the wings a in the opposite direction.

Hung to lugs 12 on the end of the car are blocks cl, (two in the present instance,) each block having an arm, F, and being connected 3 5 to abar, G, the lower end of which has arms f, projecting pins 9 on the latter bearing 011 the frame I), one on one side and the other on the opposite side of the pivot of the same.

\Vhen the car is at rest, the parts are in the position shown in Figs. 1 and 2, the weight of the bar G, assisted, if desired, by a spring, h, eifecting the elevation of the arms F, so that the entrance to the platform is unobstructed. hen the car commences to move, however,

5 the current of air beneath the same acts upon the wings of the frame D and causes the latter to swing, thereby elevating the bar G and effecting the gradual lowering of the arms F,

so as to obstruct the platformentrance. Thus so when the car moves in the direction of the arrow 1, Fig. 2, the air acts upon the wings a, causing the frame I) to swing in the direction of the arrows 2, and thereby raising the bar G and lowering the arms F, as indicated by the arrows 3, until the ends of said arms come into 5 5 contact with stop-collars i on the vertical bar on of the platform-rail, as shown in Fig. 3, the ends of the arms F having slots a for the reception of said bar, which thus locks the outer ends of the arms, and prevents the straining of the same by lateral pressure thereupon.

' lVhen the train slows down, the pressure of air upon the wings a gradually decreases with y the decrease in speed, and the arms F are gradually raised until, when the train is at a 6 5 standstill, the arms are again restored to the position shown in Fig. 2, and the platformcntrance is unobstructed. The same result is effected when the train is moving in the opposite direction, the air acting upon the wings a, and the frame D swinging in a direction the reverse of that pointed out by the arrow 2. Openings 8 are formed in the upper lug Z), a similar opening in the upper block (1 coinciding with these openings when the gate is closed, so that by passing a pin transversely through the openings the gate may be locked in this position Where it desired to increase the eii'ect of the air on the wings, the latter may be inclosed in a funnel-mouthed So casing; but under ordinary circumstances this will not be necessary.

While I have shown a special form of gate and a special form of bladed frame for operating the same, I do not limit myself thereto, as S 5 the details of my invention are capable of extensive modification without departing from the spirit of the invention, the main feature of which is the operation of the gate by the action of the current of air, due to the motion 0 of the train, on blades or vanes controlling the movement of the gate, so that said gate will be automatically opened and closed at the proper times without any attention on the part of the br akeman. 9 5

As instances of modifications in the details of the device, may be mentioned a swinging gate with a horizontal bladed wheel secured to the lower end of the pivot-rod, as in Fig.

4., the gate having a spring, a, tending to open g the same; or, when a gate such as shown in Figs. 1 to 3 is used, the blades or wings may project from a rock-shaft having a toothed segment adapted to gear with one or other of two racks formed on the forked lower end of the bar G, and the latter may have a rack acting on pinions on the arms, in order to raise and lower the latter, as shown in Fig. 5.

I therefore claim as my invention 1. The combination of a railway-car platfor1n,,a gate, and an operating device therefor having wings or blades acted upon by the current of air due to the motion of the train, whereby the gate will be automatically closed when the train starts and automatically opened when thetrain stops,substantially as described.

2. The combination of pivoted arms F with an operating-bar, G, therefor, wings or blades the movement of which is due to the current of air caused by the movement of the train, anddevices whereby the bar G is operated on the movement of said wings or blades, as set forth.

3. The combination of the pivoted arms F, the bar G, having arms f, with pins 9, and the frame 1), having wings or blades, as set forth.

4. The combination of the bar on of the platform rail with the pivoted arms F, having slots a, and with devices, substantially as de scribed, for-operating said arms.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWIN L. TEVIS.

Vitnesses:

JOHN M. CLAYTON, HARRY SMITH.

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