US258956A - Car-brake - Google Patents

Description

(No Model.)

S. E. TER-RY.

GAR BRAKE Patented June 6,l 1882.

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SAMUEL H. TERRY, OF GUTHRIE, MISSOURI. l

I CAR-BRAKE.

SPECIFICATION formingpart of Letters Patent No. 258,956.5,.dated June 6, 1882. Application filed February 21,1882. (No model.)

United States, have invented new and useful Improvements in Automatic Gar-Brakes, of which the following is a full description, refervence being had to the accompanying drawings,

Figure l is a front elevation ot' one end of a platform-car; Fig. 2, an under or bottom view; Fig. 3, a similar view of the draw-bar, Fig. 4, a cross-section on line x :c of Fig. 2.

The object of this invention is to provide a. car-brake which shall be to a certain extent self-acting, and which will be operated by means of pressure on the outery ends ot' the draw-bars, either by reversin gthe engine or so far braking it that the momentumof each car will furnish sufficient pressure at its draw-bar to operate the brake; and its nature consists in providing a spring draw-bar with a hinged section which may be moved to one or both sides of its direct line; in providing it with springs for returning the hinged section to its,A

proper line; in providing the axle of one pairl of wheels in one or both trucks of the car with. a worin or scroll; in connecting the brakechain with apivot-bar formed or bent to be op-4 erated by the rear end or cross-head of the draw-bar; in providing the hinged section of the draw-bar with side springs to return it to a central position, and in the several partsy and combinations of parts hereinafter described and claimed as new.

In the drawings,`A indicates the platform; B, the wheels; G, the track or rails; D, thedraw-bar; D, the hinged section of the drawbar; E, the mainspring of the draw-bar; F, the pivoted lever or bar foroperatingthe chain G, the cross-bar or bridge for supporting the rear end of the draw-bar; H, brake-bars; I I',

chains for connecting the proper devices with the brake 5 c, the worm or scroll on the axle; b,

the projection or point on the section D ofthe draw-bar o c, side springs for the hinged section of the draw-bar; d, the joint in the draw-bar; e, beveled projection on the under side of the section D for holding the section in position when moved to one orthe other sides of its straight line; f, the cross-head or rear end of section D', g, a pin on the cross-head f,- h, rear, and i front bars of the pivoted lever F; j, notches` inthe support or bridge G with which the projection or flange e engages; k, brake-lever; n, hangers for the brake-bar.

The part A is represented `in the drawings as a platform-car; but it will be understood that it may equally well represent the bed or bottom of a freight, box, or other car or coach used on railways.

The wheels B are ot' the ordinary construction and are placed upon an ordinary axle. As shown, these wheels are connected with the car-body by brackets or standards, which are such as are used in straight cars; but I propose yto use trucks and support the body of the car upon the truck, and hold it by kingbolts in the usual manner, as my devices and improvements are designed to operate in any of the known forms ot' trucks used for supporting and carrying car-bodies.

' The track C is the ordinary railway-track.

The draw-bar D is provided at lits outer end with the ordinary mouth or head for receiving coupling-links or other coupling devices, and it is-supported in place in the usual manner. In some forms ot' 'draw-bars they are already provided with springs, which, if they have lsutlicient movement, may be used in the place of the spring E, which spring, as shown, has

a tendency to return the draw-bar to its eX-A treme voutward position lafter any compressing-pressure has been removed, which is the reverse of the action of springs ordinarily applied to draw-bars. j

At the rear or inner end of the draw-bar I hinge the section D by the hinge d. This hinged section is provided on its under side with a pin, b, which extends low enough to connect with the scroll a of the axle. It is also provided with a dan ge or shortprojection, e, which is beveled at its back end, so as to easily pass over the support or bridge Gr,and in order to have it return to its middle position when free from the action of the scroll a or the flange e, I have provided side springs, c, which may be connected with the main draw-bar, as shown in Fig. 2, or with the truck or body of the car, as shown in Fig. 3.

I provide one axle of the truck with the scroll or worm a, which is best made by casti IOO ing the worm or scroll with a collar suiiciently large to slip over and be keyed or screwed to the axle. The lever or frame F is so formed or bent that when the head j' of the section D strikes either end of the lever or frame F it will move the end of the latter forward, while the bar iof the lever F is so formed as to bring the lever or pivot bar to its proper position when the draw-bar is returned. The chains I I' are connected with this lever or frame F, and receive their movement therefrom, the chain being rmly connected with the brakebar H. A movement of either end of the lever F will set the brake.

In operation, when power is applied to the outer end of the draw-bar, either by the reverse action of the engine or the momentum of the cars, the spring E is compressed, and this backward movement of the draw-bar brings the pin or ange b into contact with the scroll or worm a, when the rotation of the scroll will throw the hinged section D to one side or the other, according to the direction in which the wheels are rotated, and when so thrown to one side the ange e engages with the notches j, (shown at Fig. 4,) which notches or guides are so located as to just free the pin b from the ends of the scroll, and they also hold the section D' off at the side, and will hold the brake as long as the flangeseremain in the notches. When the pressure is removed a slight jar will throw the flanges e out of the notches or bearings in the frame G, and the spring E will throw the draw-bar D D' so far forward as to bringthe pin b out ot' range of the scroll, when the side springs, c, will return the section D' lo its middle position or line. The moving backward of either end of the bar or frame F communicates the motion through the chain or chains I to the brake-bar or brake-lever, and sets the brakes; and as this brake is designed to be applied in the main to freight-cars and freight-trains it will be found a very efficient aid to the engineer in controlling his train, and it may be worked in connection with the ordinary shaft or hand-wheel, or without it, as desired.

In backing a train by the engine, the first movement throws the draw-bar and its hinged section straight back, in which position it remains until the wheels commence movin g,when the movement of the wheels will throw the head f over toward the side t" of the lever or frame F, in which position it will remain as long as the reverse movement is continued, and the only eiect it has in case it turns the frame-lever F is to slacken the chain I, for it will be understood that in braking either a double or single lever brake the chain I' is not used, and in order to set the brakes when the train is backed suliciently far, the draw of the engine will cause the pin g to come in contact with the l inner bar, i, and the point i', which causes the frame F to move in the same direction that the push on the opposite side gives it, and again sets the brake, so that the brake can be made to operate when the car is moving in either direction. y

It willalsobeunderstood that the side springs, c c, are not of sufficient strength to move the pivoted section of the draw-bar while braking the cars; but as soon as thebrakesare released then they will throw the section again to its middle position, or in line.

What I claim as new, and desire to secure by Letters Patent, is as follows:

1. The scroll a, attached toa car-axle, in combination, with the hinged section or prolongation D of the draw-bar, having the projection or pin b, substantially as specified.

2. The pivoted lever or frame F, composed of the bars h t', in combination with the crosshead fof the bar D', substantially as described.

3. The combination ofthe bar D', having the ange or projection e, with the guide-bridge G and the head f, with the pivoted lever or frame F, substantially as set forth.

4. The combination of the pivoted sliding har D', having the projection or pin b and head f, with the pivoted frame F and brake-operating chain I, substantially as specified.

5. The side springs, c, in combination with a sliding draw-bar, D, having a pivoted section, D', for setting the pivot-ed section when moved out of line, substantially as described.

6. The combination of the sliding draw-bar D, spring E, pivoted section D', pin b, and scroll a, with the pivoted lever or frame F, and the brake-operating chain I, substantially as set forth. 7. The pivoted frame F, having the bar i, with its bend or stop i', in combination with the head f of the bar D', and the pin g, whereby the brake can be operated by pulling on the draw-bar, substantially as specilied.

SAMUEL H. TERRY.

Witnesses:

MARIE L. PRICE, A. H. ADAMS.

ICO

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