US1210025A

US1210025A - Automatic train-stop.

Info

Publication number: US1210025A
Application number: US5380915A
Authority: US
Inventors: George F Warren
Original assignee: ELTON L MITCHELL
Current assignee: ELTON L MITCHELL
Priority date: 1915-10-02
Filing date: 1915-10-02
Publication date: 1916-12-26
Anticipated expiration: 1933-12-26

Description

G. F. WARREN.

AUTOMATIC TRAIN STOP.

APPLICATlON FILED OCT. 2. 1915. 1,210,025. Patented Dec. 26,1916.

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GIFI We r/e/z G. F. WARREN.

AUTOMATIC TRAIN STOP.

APPLICATIQN FILED OCT-2, l9l5. 1,219.,0Q5. Patented Dec. 26,1916.

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GEORGE F. WARREN, OF DOUBLE BAYOU, TEXAS, ASSIGNOR 01" ONE-HALF '10 ELTON L.

MITCHELL, 0F DOUBLE BAYOU, TEXAS.

AUTOMATIC TRAIN-STOP.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application filed October 2, 1915. Serial No. 53,809.

To all whom it may concern Be it known that I, GEORGE F. WARREN, a citizen of the United States, residing at Double Bayou, in the county of Chambers and State of T6X21S,,hLV6 invented certain new and useful Improvements in Automatic Train-Stops; 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 comprehends improvements in automatic train stops for locomotives and has for one of its objects to provide a very simple and'practical device of this nature which will .act to automatically apply the airbrakes when passing by an obstacle unless preventedby an act of the engineer.

Another object of the invention is to provide an automatic train stop comprising a lever pivoted to 1 suitable part of a locomotive and adapted to engage an obstacle, a weight connected by a flexible member to the handle of the engineers valve, and means operated by the lever for allowing said weight to drop, whereby the valve will be opened and the airbrakes applied.

The invention also aims to generally improve devices of this nature to render them more useful, practical, reliable, and commercially desirable.

WVith these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement ofparts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which- Figure 1 is a fragmentary side elevation of an engine, showing my improved train stop applied thereto, said stop being shown partly in section, Fig. 2 is a vertical section taken on the plane ofvline 22 of Fig. 1, Fig. 3 is a vertical section taken on the plane of line 33 of Fig. 1, Fig; dis a: section taken on the plane of line ll of Fig. 1', and Fig. 5 is a detail view showing how the lever is pivotally mounted.

Referring in detail to the drawings by numerals, l designates as an entirety a portion of a locomotive having a running board 2 and fire-box 3. Y The running board is formed with an opening 4: through which a vertical casing 5 extends. It will be noted that the casing projects a considerable distance above the running board, and a slight distance below the same. A slide plate 6 is supported upon the underside of the running board by means of a housing or guide 7 and works through an opening 8 in one side of the casing 5:;

A lever 9 is pivoted as at 10, to a plate 11 which is secured to a convenient part of the locomotive, such as the fire-box 3. The lever 9 is provided upon its lower end with an out-- wardly projecting arm 12.

A wire 14, or any other suitable member is connected at one end to the upper extrem- 1ty of the lever and at its other end to the slide plate 8 which has its under face beveled adjacent one end thereof. A spiral spring 15 is coiled about the wire, bears at one end against the plate 16 and at its other end against the slide plate 8. This being an expansive spring, tends to hold the slide plate normally under the opening formed in the running board.

A weight 17 is housed within the casing 5 and is normally supported by the slide plate 8. The lower terminal of the weight 17 which engages the plate 8 is tapered or pointed to reduce the area of bearing surface and consequently the frictional resistance to relative movement of these parts. A flexible member 18 is secured at one end to the weight and at its other end to the handle 19 of an engineers valve 20. This member passes over

pulleys

21 and 22 and passes from the casing through the opening 23.

When the arm 12 of the lever strikes an obstacle 2 1, which may be secured to one side of the track in any desired manner, the slide plate 8 is moved from under the weight, allowing the same to drop, which causes the handle 19 to be actuated so as to release air from the train pipe and set the airbrakes. The plate 8 engages the upper surface of the weight 17 when the weight is dropped and prevents the same from returning to its normal position until the engineer or other attendant grasps the handle 17 and draws the weight up. In this operation, the upper portion, of the weight 17 engages the beveled portion of the plate 8 and easily slides the same against the tension of the spring 15. Then the engineer knows the train is approaching an obstacle and does not wish to have the brakes applied, he will grasp'the handle 19 and hold it stationary until the obstacle has been passed and the slide plate 8 returned to its normal position. 7

Any suitable form of obstacle or trip 2& may be employed. in connection with my train stop. For the purpose of illustration, I have shown one which is pivoted at to the upper side of one of the ties. The obstacle or trip 24: extends over and rests upon the upper sides of several ties, and it is adapted to be moved upon its pivot 25 in the direction of and away from the rail. When moved in, the direction of the rail, and parallel thereto,-the obstacle or trip 24 is inoperative position, and .when moved away from-the rail, and diagonally with relation thereto, the obstacle or trip'2 l is in inoperative position. The obstacle or trip 24: may be moved into operative position by a station master or agent, and to permit of th1s I provide a shaft 26 which is journaled in bearings 27. The shaft 26 is arranged parallel with relation to the rail, and it is provided with a crank 28, a link 29 connecting the outer end of the crank 28 to the underside of the obstacle or trip 24. The shaft 26 may be connected to. any suitable means for operation by the station master or agent.

From the foregoing description taken in connection with the accompanying drawings, it will be apparent that I have provided a very simple and practical train stop which will automatically operate to stop. a train should an obstacle in operative position be passed without the knowledge of the engineer.

While I have shown and described the preferred embodiment of my invention, it

will be understood that minor changes in construction, combination and arrangement of parts may be made without departingfrom the spirit and scope of the invention as claimed. 7

Having thus described my invention, I claim V 1. In an automatic stop of the character described the combination with a locomotive, of a lever pivotally secured thereto intermediate its ends, a slide plate, a connection between the said lever and slide plate, a weight supported by the slide plate, and

a flexible member connected at one end to the weight and at its other end to the handle of the engineers brake valve, said lever being adapted to engage an obstacle, whereby the slide plate is withdrawn from under the weight, allowing the latter to drop.

2. In an automatic stop of the character described the combination with a locomotive, of a vertical lever pivoted intermediate its ends thereto, a slide plate horizontally movable along the underside of the running *board, said board being formed with an tuated, and spring means for returning the plate to its normal position under the open ing formed in the running board.

3. In a stop of the character described the combination with a locomotive, of a vertical' lever pivoted intermediate its ends thereto, a slide plate movable upon the underside of the runningboard, aconnection between-said. slide plate and lever, spring means for returning the slide plate to its normal position when actuated by the lever, the running board being formed with an opening, a weight positioned within said opening andresting upon the slide plate, a flexible connection secured at one end to the weight and at the other end to the engineers brake valve, and guide rollers for said connectioma dropping of the weight causing the. valve to be opened,'whereby the airbrakes are applied.

at. In an automatic stop of the character described, the combination with a locomotive, of a vertical casing secured to said locomotive, said casing having an aperture formed in one side thereof intermediate'its end and a similar aperture formed on the opposite side adjacent the lower end thereof, a weight slidably mounted in said case ing, a' sliding plate extending through the lower aperture and supporting said weight, a pulley secured to the upper portion of said casing, a similar pulley secured to one side of said casing adjacent the upper aperture, and a cord having one end secured to said weight and passed over the upper pulley and then under the other pulley and through saidadjacent aperture and having its opposite end secured to an air brake valve for the purpose specified.

5. In an automatic stop of the character described, the combination with a locomotive, of a Vertical casing, a weight slidably mounted in said casing, a cord having one of its ends secured to saidweight andthe opposite end to an air brake valve, a horizontal casing, a plate slidably mounted in said horizontal casing, said plate adapted to extend into said vertical casing and support said weight, a rod secured to said plate and extending outward of said casing, a spring'coiled around said rod having one end engaging said sliding plate'and the opposite end engaging said casing to normally hold said sliding plate into said vertical casing, and means secured to the free end of said rod to move said sliding plate againstv the tension of the spring.-

6. In an automatic train stop of the character described, the combination with a locomotive, of a vertical casing, a weight slidably mounted in said casing, means to connect said weight with the handle of an engineers brake valve, a horizontally sliding plate extending into said casing, and engaging the lower terminal of said weight to support the same, and means to draw said 10 plate from out of engagement with said weight, the lower terminal of said weight tapered to reduce the area of bearing surface thereby reducing the frictional resistance between said plate and weight.

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

GEORGE F. WARREN. Witnesses:

ELWOOD A. WlLBORN, GEO. F. WILBORN.

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