US2453255A

US2453255A - Hand brake

Info

Publication number: US2453255A
Application number: US625353A
Authority: US
Inventors: Roland J Olander
Original assignee: W H MINER Inc
Current assignee: W H MINER Inc
Priority date: 1945-10-29
Filing date: 1945-10-29
Publication date: 1948-11-09
Anticipated expiration: 1965-11-09

Description

Nov. 9, 1948. R. OLANDER HAND BRAKE Filed Oct. 29, 1945 fnvenlor: fiolana JOZamYer.

Patented Nov. 9, 1 948 HAND BRAKE.

Ro and J. OIander, Chicago, 111., assignor to W. H.

Miner, Inc., Chicago, 111., a'corpora-tion of Delaware Application ()ctober 29, 1945,,sena No. 625,353

- 4 Claims. (01.74- 1.91)

This invention relates to improvements inhand brakes for railway cars.

One object of the invention is to provide. in connection with a. ratchet hand brake mechanism for railway cars which is inaccessible from the exterior of the car, simple and efficient means for actuating the holding dog from the exterior of the car.

Other objects of the invention will more clearly appear from the description and claims hereinafter following.

In the drawing forming a part of this specification, Figure 1 is a transverse, vertical. sectional view through the wall structure of the vestibule section at the platform end of a railway passenger car, illustrating my improvements in connection therewith. Figure 2 is a horizontal sectional view, corresponding substantially to the line 22 of Figure 1. Figure 3 is a view, similar to Figure 1, on an enlarged scale and partly broken away, showing the brake housing partly broken away and certain parts therein in vertical section. Figure 4 is a vertical sectional View, corresponding substantially to the offset line 4-4 of Figure 2, said view being on an enlarged scale and partly broken away and illustrating the looking dog in disengaged position.

I In said drawing, 1!] indicates the transverse end wall of a railway car provided with the usual end platform and vestibule construction, the vestibule diaphragm member at one side of the end of the car only being shown, the same being indicated by H in Figure 2. The vestibule .post or side wall at the corresponding side of the car, to which the diaphragm is connected, is indicated by 12. The post is of the usual form, being a vertically disposed I beam member. ,A portion of the end platform of the car is shown in Figure 2, the same being indicated by 13.

The hand brake mechanism proper, which is of a well-known design is mounted on the inner side of the wall !2, being contained within the housing l4 secured to said side wall. The hand brake mechanism shown is of the lever operated ratchet type, including the usual chain winding drum, shown in dotted lines in Figure 2 and indicated by E5. The drum i5 is driven by the usual power multiplying gear and pinion arrangement, not shown, the pinion being carried by a transverse, rotary shaft 16 mounted within the housing, parallel to the wall 52 and meshing with the gear which is located above the same, as shown in dotted lines and indicated by 11 in Figure 2. The gear I! and the drum 15 are carried on a shaft 18 located above the shaft 16. The shaft I6 is rotated. by, a swinging operating lever 19,

journaled on said shaft and carrying a spring actuated pawl 20, which engages a ratchet wheel 21 fixed to the shaft 16. In Figures 1 and 3, the operating lever is shown in its pendant position with'the pawl disengaged from the ratchet wlleellthe pawl being so held by a fixed stop mem'- berfl22 on the housing. The shaft 16 also has a second ratchet wheelj23 fixed thereto with which a pivoted locking dog 24 engages. The locking dog '26 is mounted on a pivot 25, parallel to the wall l2 of the vestibule of the car andalso parallel tojtheshaft l5. The dog 24 is yieldingly forced against the ratchet wheel by the usual spring- 125. This locking dog is lever actuated,

" being provided with a radially projecting lug or tail piece I26 with which theFactuating lever engages.

In carrying out my invention, I provide a'lever A on the exterior of the car; a connectinglink B or push rod actuated by the lever A; and alever C actuated by the link B and cooperating with the locking dog to actuate the same.

The lever A is verticallydisposed and pivot-ally supported between its endson a bracket 26 fixed tothe outer side of the wall 12 of the vestibule the lever between its endsfor swinging moveportion of the car. The bracket 25 has a pair of outstanding, spaced, "ears 27-21 between which the lever A extends; and a. pivot pin '28, extending through said ears and the levensupports ment in a vertical plane. The lower armof the lever A, which arm is indicated by 29, is provided with a hand grip portion '38 at its bottom end. Theupper arm of the lever, which is indii catedby 3Lextends at an angle to-the lower arm, being "inclined outwardly away from the wall 12 in upward direction, as clearly shown in Figure 1-. v

The connecting link or push rod B is in the form of an elongated bar extending loosely through the opening 33 in the wall 12. The rod B is horizontally disposed and is forked at its outer end, as indicated at 32, said forked portion being engaged over the upper end portion of the arm 31 of the lever A and pivotally connected to said arm 31 by a pin 34 extending through said arm and elongated slots !34 provided in the arms of the forked portion of said rod. The slots I34 provide a lost motion connection between said rod and the lever A.

The lever C is similar to the usual lever memmer for actuating the locking dog employed in a brake of this type with the exception that it is provided with connecting means at its lower end for the rod B. This lever C is pivotally supported at its upper end in the usual manner by a pivot element 3.5 and has a pair of radially projecting, ci cumferentially spaced lugs 3636 which eng ge with the tail piece I26 of the dog to either t row the same into or out of engagement with the ratchet wheel 23. As is well understood by those skilled in this art, the lever C is manually actuated and serves to control the operation of the locking dog from the interior of the vestibule of the car. The means at the lower end of the lever C for connecting the same to the rod B comprises a socket portion 31, receiving the inner end of the rod, and a pivot pin 38 extending through the lever and said end of the rod.

In Figures 1 and 3, the locking dog 24 is shown in position operatively engaging the ratchet wheel 23. To release the dog from the exterior of the car, the attendant pulls the handle lever arm portion 29 of the lever A outwardly away from the wall l2'of the car, thereby swinging the upper arm 3! of the lever inwardly toward saidwall, taking up the lost motion, pushing the rod B inwardly, or to the right, as seen in Figure 1, by engagement of the arm 3| of the lever with the wall at the inner end of the forked portion, thereby swinging the lever C in clockwise direction, as viewed in Figure 3, pressing the upper lug 3B of said lever against the tail I26 of the dog and rotating the dog to disengaged position, as shown in Figure 4. In this connection it is ponnted out that the lost motion connection between the lever A and the rod B permits swinging movement of the lever C in contra-clockwise direction, as viewed in Figure 1, in effecting forcible engagement of the dog 24 with the ratchet wheel 23, without disturbing the pendant position of the lever A, that is, the lever C may be actuated to engage the dog with the ratchet wheel without efiecting movement of the lever A.

I claim:

1. In a mechanism for controlling the operation of the pivoted locking dog of a ratchet brake mounted entirely on the inner side of the wall of a car, the combination with a pivoted lever for actuating said dog mounted at said inner side of said wall, said lever having a hand grip portion; of a rod connected to the hand grip portion of said lever and extending through said wall; and an actuating lever swingingly supported on the outer side of said wall and pivotally connected to the rod for reciprocating the same.

2. In a mechanism for controlling the opera:

tion of the pivoted locking dog of a ratchet brake mounted on the inner side of the wall of a car,

the combination with a depending lever at said inner side of said wall pivotally supported at its upper end and cooperating with said dog to actuate the same, said lever having a hand grip portion at its lower end; of a horizontally disposed mounted on the inner side of the wall of a car,

the combination with a lever at said inner side of said wall pivotally supported at its upper end and cooperating with the dog to actuate the same, said lever having a hand grip portion at its lower end; of a horizontally disposed rodengaged with the hand grip portion of said lever to swing the same, said rod extending through said wall; and a vertically disposed operating lever swingingly supported between its ends on the .outer side of said wall, said last named lever having upper and lower arms, said lower arm terminating in a hand grip portion, the upper end of said upper arm being engaged with the rod to actuate the same.

4. In a mechanism for controlling the operation of the pivoted locking dog of a ratchet brake mounted on the inner side of the wall of a car, the combination with a depending lever at said inner side of the wall pivotally supported at its upper end and cooperating with said dog to actuate the same, said lever having a hand grip portion at its lower end; of a horizontally disposed rod extending through said wall, said rod being pivotally connected at its inner end to the hand grip portion of said lever; and a vertically dis posed operating lever swingingly supported between its ends on the outer side of said wall, said last named lever having a lost motionpivotal connection at its upper end with the outer end of said rod and being provided with a hand grip portion at its lower end. v

ROLAND J. OLANDER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS