US1361484A - Hand-brake for railway-cars - Google Patents

Description

1. F. OCONNOR.

HAND BRAKE FOR RAILWAY CARS.

APPLICATION man JULY 21, |919.

1,361,484, Patented Dec. 7, 1920;

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I HIV/2n l I UNITED STATES `PATENT l OFFICE. Y

JOHN F. OCONNOR, OF CI-IICLAGO,l ILLINOIS, ASSIGNOR TO WILLIAM I-I. MINER, .OF CI-IAZY, YORK.

HAND-BRAKE For. RAILWAY-CARS.

Speccation of Letters Patent.

Patented Dec. 7, 1920.

Application filed July 21, 1919. Serial N0. 312,133.

To all whom t may concern Be it known that I, Jol-IN F. OCoNNoR, a citizen of the United States, residing at Chicago, in the county o-f Cook and State of Illinois, have invented a certain new and useful Im orovement in Hand-Brakes for Itailwaylars, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in hand brakes for railway cars.

The object of my invention is to provide F a simple and efficient hand brake and one which shall dispense with pawl holding springs.

In the drawings forming a part of this specification, Figure 1 is an elevation of the brake embodying my invention. And Fig. 2 is a vertical section taken on line 2w-2 of Fig. 1. Fig. 3 is a cross section taken on line 3--3 of Fig. 2.

In the drawings, the numeral 10 indin cates a portion of a carto which the brake is attached. Rigidly secured theretoas for instance, by the rivets 11-is a fixed housing 12 having an internal incline 13 and a circular groove 14: in its bottom inem-y ber, the said groove being adapted to receive the lower flange 15 0f the revolving frame 16. The housing 12 is closed at its upper end by the top plate 17 provided with the hand-hold 18 upwardly extended and internally provided with the circular recess 19, to receive the top flange 20 of the revolving frame 16. The said frame is held within the housing 12 between the member 17 and the lower wall of the fixed housing. The housing is also provided with a perforation 21 for the passage of the brake staff 22, of which only the upper portion is shown, the said brake staif having fixed thereon a ratchet 23, the upper and lower ends of which-as at 24-arc provided with bearing portions `and intermediate said ends having ratchet teeth 25.

The revolving frame 16 is provided with an inclined way 26 within which is received a gravity pawl 27. The said pawl is provided on its inner edge 28 with ratchet teeth which may be of any suitable number, and which are adapted to engage the teeth 25 of the ratchet, throughout their length. The gravity ypawl is provided with an undercut shoulder 29, downwardly extended as at 30, forming a bearing face for the tooth '31, provided upon the inner end of the operating llever 32, which is pivoted to the revolving frame as at 33. The said lever is adapted to be raised and lowered as hereinafter described. The revolving frame is provided with stops 34 adapted to engage shoulders. on the housing 12, as appears from an inspection of F ig. 3, to suitably limit the rotation of the frame in the operation ofthe brake.

Between the incline 13 of the housing and the opposed inclined portion of the top plate, is formed an inclined groove 35, within which is received the gravity locking pawl 36. The said pawl is provided with a slot 37 which receives the linger 38 of the locking pawl operating arm 39, which is pivoted to the housing as at 40. The locking pawl is provided at its inner edge with the teeth 11 which are adapted to engage substantially the entire length of the teeth 25 upon the ratchet. The brake described is one in which no springs are used, either in connection with the operating pawl or the locking pawl. It will be noted that these pawls engage a suitable length of the ratchet, thus insuring a certain engagement and con1- paratively little wear.

In operating the brake, the handle 32 is elevated from its hanging inoperative position to its horizontal operative position, the tooth 31 thereon dropping, and gravity drawing the operating pawl downwardly in its incline within the revolving frameuntil it is in engagement with the teeth of the ratchet. The handle is then swung in a horizontal plane rotating the ratchet and its shaft in a clockwise direction, as illustrated in Fig. 3 of the drawings, to such extent as shall be desired and during this turning, the locking pawl will ride in and out of engage ment against the teeth, the locking pawl operating handle 39 remaining stationary 100 by reason of the diagonal slot 42 shown in Fig. 2 of the drawing, which will permit the riding of the locking pawl upon the ratchet without movement of the said handle 39.

Upon release of the operating pawl the ing of the ratchet, the operating pawl will ride back and forth upon the teeth of the ratchet and over the long inclines 43 of saidY teeth, this being permitted through the clearance between the end 31 of the .handle and the operating pawl. If it is desired to remove the locking pawl from its engagement with the ratchet, said removal can be effected through pulling upon the outer end of the lever 39, forcing the locking pawl outwardly in its incline inthe housing.

I claim:

l. In a hand brake the combination with a shaft and a ratchet thereon, of a housing receiving said ratchet, a revolving frame associated with the housing, a pivoted lever thereon, a pawl mounted in said frame, the frame being provided with an inclined groove within which the said pawl moves by gravity into engagement with the ratchet and is withdrawn from said engagement by the operating handle.

2. In a hand brake, the combination with a housing having a shaft therein and a ratchet mounted on said shaft, of a frame swingingly mounted on said housing, said frame being provided with a downwardly inclined groove, a pawl slidingly received in said groove, and a handle to actuate said pawl. v

3. In a hand brake, in combination: the casing, an incline therein, a gravity holding pawl slidingly mounted in said incline, a brake staff, a ratchet thereon within said housing, a. frame swingingly mounted in the housing, a handlepivoted to said frame, the saidv frame being provided with an incline and having a gravity pawl slidingly mounted therein to engage theratchet, the upward movement of the pawl in said incline being effected byrsaid handle.

4. Ina hand brake for railway cars, in

combination: aframe, a brake staff having a ratchet therein, means for supporting the same, the frame having a downwardly extended incline, a .gravity pawl slidingly mounted therein, a handle pivoted to the frame, the gravity pawl being provided with a shoulder, said handle being adapted to rotate the frame, and to elevate the pawl in the said incline.

In witness that I claim the foregoing I have hereunto subscribed my name this 14th day of July, 1919. Y

JOHN F. CONN'OR.

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