US660648A - Brake-operating mechanism. - Google Patents

Description

No. 660,648. 3 Patented on. 30, I900.

.1. E. NORMAND.

BRAKE nrannme nzcnmsm (Applicntion filed m 29, 1590. (No Model.) I I 2 Shaets-Sheoi l.

' WITNESSES 5 Tu: NORRIS Pzrzns c0. mom-un o. WASHINGTON. a. 42V

Patented Oct. 30, I900.

J. E. NORMAND. BRAKE OPERATING MECHANISM.

(Apphcltmn filed July 29 1899 2 Sheets-Sheet 2.

6 "WM I UNITED STATES PATENT OFFICE.

JOSEPH E. NORMAND, OF WATERTOWN, NEW YORK.

BRAKE-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 660.648. dated October 30, 1900.

Application filed July 29, 1899. Serial No. 725.453- \No model.)

To aZZ whom it may concern:

Be it known that I, JosEPE E. NORMAND, a citizen of the United States of America, and a resident of WVatertown, Jefferson county, New York, have invented certain new and useful Improvements in Brake-Operating Mechanism, of which the following is a specifica form of the operating-lever, and certain new.

and useful details of construction and combination of parts to be hereinafter more fully described.

The objects of my invention are to-secure a joint between the brake-beam and the brakeoperating lever which will be self-compensating, whether for wear of one brake-shoe over the other on opposite sides of a truck, thereby causing an unequal movement of the brake-beam horizontally, or for the canting or tipping of the brake-beam from a variety of causes which are well known, to provide a simple and effective form of equalizing device between two brakes on the same side of the car-truck, by such device permitting a proportionately-greater pressure to be applied to one wheel than to the other, if desired, and to simplify and render more effective the operating mechanism and working parts. I attain these objects in a device which I will now proceed to describe in the following specification, referring to the accompanying drawings, forming a part thereof, and will then point out the novel features in claims.

Figure 1 represents a top view of one-half of a truck fitted with a brake mechanism e mbodying my invention. Fig. 2 represents a side view, partially in section, of the same, certain parts being removed and others broken away to better illustrate the invention; and Fig. 3 is a detail sectional view of an improved connection between the brake-open ating lever and the equalizing-lever.

Similar reference characters designate corresponding parts in all the figures.

Reference character 4 designates the frame of a truck fitted with my improved brake, and 5 6 designate the truck-wheels. In the particular form of truck here shown the wheel 5 is of larger diameter than the wheel 6.

7 designates a brake-operating lever constructed in the form of a bell-crank lever. The said lever comprises a long arm 8, rigidly secured to a steel shaft 9, rotatablymounted upon the frame 4, and a shortarm 10 at about right angles thereto, also rigidly secured to the said shaft 9.

11 designates a compressed-air cylinder provided with a piston, to which one end of the long arm 8 of the operating-lever is attached.

tend to apply my invention I do not wish to be limited to such use, as my invention is applicable to brakes of all kinds.

13 14 designate brake-beams, 13 being arranged to carry brake-shoes 15 and 14. to carry the brake-shoes 16. As only one-half of the truck is here illustrated, only one shoe 15 and one shoe 16 are shown; but it is of course understood that there are corresponding shoes on the opposite ends of the brake beams 13 14 for corresponding wheels 5 and 6. There are also, preferably, another operating-lever 7 and another cylinder 11, with its appurtenances.

The brake-beams may be swung. or suspended from the truck-frame by links or otherwise (not shown) in a manner well known and needing no further description.

The brake-beam 13 is connected to the brake-beam 14 by means of an equalizing-lever 18, secured at one end to a connectingrod, in turn secured to the beam 13, and at the other end to a lug 19, riveted to the brake beam 14. The short arm 10 of the operating-lever bears against the equalizing-lever would be applied midway of the equalizing lever. In the particular truck to which the brake is shown as applied it is not so desired. The wheels being very much larger than the wheels 6, it is desired to apply a very much greater pressure upon the brake-beam 13 than upon the brake-beam 14. The point at which the pressure is applied to the equalizing-lever is thus very much nearer to the point at which the said lever is connected to the brakebeam 13 than the point at which it is con- "nected to the brake-beam 14, andjustin proportion to the leverage accruing therefrom is the resultant pressure upon the 'brakeQbeams. As here shown,-the proportion'is aboutas three is to seven.

Between the short arm of the operatinglever 7 and the equalizin'glever '18 is arranged a universal-joint connection. trated more fully in the enlarged detail sectional view, Fig. The end of the said short arm 10 is provided with a round nose or ball end 20, which engages with a'socke't2l, with which the equalizing-lever 18is provided. The socket is cupped to receive the ball end or nose 20 of the arm 10, and the twopieces fitted together permit a universal movement of the brake-beam "relatively to the equalizing-lever. To maintain the two pieces infintimateconn'ection and to prevent accidental displacement thereof, I have provided the arm 10 with a pin or pins 22, extending on either side thereof, and the socket-lpiece 21 with flanges 23, arranged on either side of the'arm 10 and having slots 24, 'throiigh which the pin or pins 22 pass. Thisconn'ection will form a support for the equalizing- (Illuslever and the connecting-rod 17, but will not interfere with the perfect working of the universal joint while the brake is being operated.

What I claim is 1. In a brake mechanism, the combination with a plurality of brake-beams, an equalizing-lever connected to said beams, and an operating-lever adapted to apply pressure to said equalizing-lever, of a universal joint interposed between said equalizing-lever and said operating-lever, and means independent of the said universal joint. for supporting the said equalizing-lever from the said operating lever.

2. In a brake mechanism, the combination with a plurality of brake-beams, an equalizing-lever connected to said beams, and an operating-lever adapted to apply pressure to said equalizing-leveiy'of a ball-and -socket connection between said equalizing-lever and said .Q'perating-lever, and a pin-'and-slot conne'ction between said equalizing lever and said operating-lever independent of the balland-socket connection, for the purpose of in- (1epehdently'supporting said equalizing-lever from saidoperaling lever. I In a brake mechanism, the combination with a plurality of brake-beams, of an equalizing-lever connected to said beams and an operating-lever adaptedto apjplypressure directly to said equalizing-1e ver, the said equalizing-lever provided with a socket-piece rig idly secured thereto but capable of adjustment thereon, .the'said socket-piecehaving a spherical recess, and the said operating-lever having a spherical projection adapted to engage with the said spherical recess.

I "Signed by me a'tNew York, N. Y. this 26th day of July, 1899.

7 JOSEPH E. NORMAND.

Witnesses:

FRANK H. Oo'rHREN, ALBERT K. NEWMAN.

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