US1257919A - Operating mechanism for hand-brakes. - Google Patents

Description

J. F. OCONNORt OPERATING MECHANISM FOR HAND BRAKES.

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J. F. OCONNOR.

OPERATING MECHANISM FOR HAND BRAKES.

Patented F611). 26, 19118. 7

2 SHEETS-SHEET 2.

. APPLICATION HLED MAR-1.1916.

' (Q-ATTORNEY? JOHN F. OGONNOR F CHIGAGO, ILLINOIS, ASSIGNOR T0 "WILLIAM H. MINER, OF GHAZY, NEW YORK.

OPERATING MECHANISM FOR HAND-BRAKES.

Specification of Letters Patent.

Patented Feb. 2 3, lidlld.

Application filed. March 1, 1916. Serial No. 81,335.

To all whom it may concern:

Be it known that 1, JOHN F. OCoNNon, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Operating Mechanism for Hand-Brakes, 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 hand brakes for railway cars.

The object of my invention is to provide a brake of simple construction and efficient operation.

In the drawings forming a part of this specification, Figure 1 is an end view of a portion of a railroad car showing an assembled brake embodying my invention in position thereon. Fig. 2 is an enlarged vertical section taken at line 2-2 of Fig. 1. Fig. 3

is a transverse section taken on line 3-3 of Fig. 2. Fig. 4 is a vertical section illustrating a detail taken on line 4-4 of Fig. 3. Fig. 5 illustrates a modification of one of the parts.

Referring to thedrawings, the numeral 6 indicates the end of a railroad car, a portion of which is shown in the drawings. The car illustrated is of'a gondola type, though it will be obvious that my brake may be used with any type of car. The brake is shown at 7. The numeral 8 indicates a casing within which the brake mechanism is mounted, the same being closed at its outer end by the preferably integral plate 9, and at its inner end by the plate 10. The casing 8 is provided with means, preferably the lugs 11, suitably perforated for the passage of the rivets 12 which engage the easing and the plate to thevad acent por tion 13 of the car. The plate 10 is apertured as at 14 to provide a bearing for the inner end of the shaft 15, the shaft being mounted at its outer end in the bearing 16 provided in the outer plate 9 of the casing. The shaft bears a drum 17 which is in the form shown in the drawings provided with a helical groove 18 to receive the brake chain 19 in the winding and unwinding of the drum. The chain is fastened to the drum by suitable means as the lugs 20 and rivet 21 passing therethrough and through one of the links 22 of the chain. This is shown in Fig. 2 of the drawings. The shaft 15 also bears a wheel 23 the hub of which is indicated at 24., and the periphery is indicated at 25, and comprises a preferably iii-turned collar or rim flange 26 forming a ring upon which the pawls of the mechanism are adapted to be engaged as hereinafter described. In preferable construction, a space 27 is provided between the inner plate 10 of the casing and the adjacent edge of the wheel 23. In this space is mounted the inner end of the operating handle 28, the said operating handle being provided with the preferably integral spaced-apart lugs 2929 having a groove or way 30 between them of sufficient width to permit the passage therethrough of the collar 26 of the wheel 23. The operating handle 28 passes through a slot 31 provided in the periphery of the casing, the same terminating in preferable construction at the point indicated by the numeral 32 in Fig. 3 of the drawings to permit the engagement of the operating handle thereagainst when it hangs in its normal vertical position as illustrated in Fig. 3. A stop-member 33 is provided within the easing to engage the side 34 of the inner end of the operating handle to hold the same in its released position as hereinafter described. The casing 8 is also provided with a slot 35 through which passes the holding or locking pawl 36, the locking pawl having without the casing a handle 37 and within the casing a pair of spaced-apart lugs 3838 having a groove or way 39 between them to permit the passage therethrough of the collar 26 of the wheel 23. A stop-member 40 is provided on the inner face of the casing for, engagement with the locking pawl in the manner hereinafter described.

To wind the brake chain 19 upon the drum sufiiciently to operate the brake mechanism underneath the car, which is not shown. or described herein but which is well understood in the art, the operator moves the handle from its normal position, as illustrated in Fig. 3, in a clockwise direction to rotate the wheel 23 and the drum 17 in the same direction. The lugs 2929 on the operating handle are so spaced that upon exerting the pull described upon the handle, the same are engaged by the collar 26 of the wheel 23, thus transmitting the motion of 'member 40, and is so mounted that, under the ii'ifluence 'of gravity, it will bring the lugs 38 of the locking pawl into biting en- 7 gagement upon the collar 26, thus preventing its counter rotation and the unwinding of the brake chain. In setting the brakes, if one movement of the operating lever is insufiicient to wind the chain to a sufiicient degree of tautness, the operation may be repeated until the brakes are set.

d When it is desired to release the brakes, the chain is permitted to unwind by the release of the holding pawl, which is efiected through the movement of the handle 37 thereof in a direction away from the casing, the stop 'lOserving as a fulcrum upon Which the lugs 38 are forced out of biting engagement with the collar 26, permitting the collar to run idly between the same on the unwinding of the chain. Meanwhile, the operatinghandle is prevented from biting the collar by the stop lug 33, inasmuch as the fiat face 34: thereof holds the lever in a vertical positron,- thus permitting the collar to runbetween the lugs 29, the upper of which slides on the inner surface of the collar without biting engagement. It will be observed that when the handle 28 is in a line radial to the Wheel 23, the lugs 29-29 do not bite the collar 26, but upon movement of the handle to a line not substantially radial to the wheel, the lugs 29 engage the collar and serve to rotate the Wheel.

In Fig. 5 is shown amodified form "of collar in which both the inner and outer faces of the collar 4L3 are 'und'ulate'd as at 2% to form depressions as at 45 to permit the said hand lever and position it in said normal depending direction.

2. In a brake, the combination with a wheel rotatable about a horizontal axis and having a collar, of a hand. lever recessed to fit over said collar and supported by and normally depending from said collar in a direction radial of the wheel, and a locking pawl also recessed to loosely fit over said collar at a different point in its circumference.

3. In a brake, the combination with a casing adapted to be secured to a wall, of a chain winding wheel rotatably mounted within said casing, said wheel having a rim flange, an operatin hand lever recessed to fit-over said rim flange and normally depending vertically therefrom, said hand lever extending through a recess in the casing, a locking pawl also recessed to fit over said rim flange and extending through another recess in the casing, and fixed abutments on said casing to position said hand lever and locking pawl.

4:. In a brake, the combination with a casing adapted to be secured to a wall, of a chain winding wheel rotatably mounted within said casing, said wheel having a rim flange, an operating hand lever recessed to fit over said rim flange and normally depending vertically,therefrom, said hand lev'er extending through a recess in the casing, a locking pawl also recessed to fit over said rim flange and extending through another recess in the casing, and fixed abutments on said casing to position said hand lever and locking pawl, the abutment for said locking pawl having a curved fulcrum face. I

5. In a brake, the combination with a casing adapted to be secured to a wall, of a chain winding drum rotatably mounted within said casing about a horizontal axis, said drum having an annular collar, a hand lever recessed at its upper end to loosely fit over said collar when extended radially of the wheel, said lever being adapted to bite the collar when moved to a non-radial position, a yertical stop on the interior of said casing for determining the normal position of said hand lever, a locking pawl recessed to fit over said collar, and a curved fulcrum abutment with which said locking pawl cooperates.

In witness that I claim the foregoing l have hereunto subscribed my name this 11th day of February, 1916;

JOHN F. OCONNOR.

Gaines bf this .patentfznay be obtained for five cents each, by addressing the Commissioner of Patents.

Washington; D'- 0;

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