US253312A - David s - Google Patents

Description

TENDER AND OTHER BRAKES.

No. 253,312. Patented Feb. 7,1882.

FIG. I.

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' NITED STATE-s PATENT om n.

DAVID S. RANDOLPH, OF ST. LOUISfMISSOURI, ASSIGNOR TO THE AMERI- CAN BRAKE COMPANY, OF- SAME PLACE.

TENDER AND OTHER BRAKES.

SPECIFICATION forming part of Letters Patent No. 253,312, dated February '7, 188

Applicationfiled July 18,1881. (No model.)

To all whom it may concern: Y

. Be it known that I, DAVID S. RANDOLPH, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri,have 5 invented certain new and useful Improvements in Tender and other Brakes; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which-- Figure I is an elevation showing devices embodying my invention attached to the footboard of a locomotive-cab for operating the tender-brakes. Fig. 11 is an elevation partly in section of the devices attached. Fig. III is 15 a similar view,the devices having been turned due-quarter.

Like letters refer to like parts wherever they occur.

Myinvention relates 'to the construction and manner of supporting the cylinder and its appurtenances which operate the brake mechanism, and is applicable to steam, air, and similarly-operated brakes.

It consists mainly in supporting the brake- 2 lever and its fulcrum from the cylinder by whose piston the brake-leverisoperated,whereby a compact mechanism and one readily attached and detached is obtained, and, secondarily, in the combination of the brake-lever, its 0 fulcrum, link, and swiveling fulcrum-frame,

whereby the power and position of the brakelever may be adjusted at will to suit varying brake mechanisms and platforms.

I will now proceed to describe my invention more fully, in order that those skilled in the art to which it appertains may apply the same.

In the drawings, A indicates the cylinder, and B the piston, operated by air, steam, or fluid, as the case may be. In the present instance 40 the cylinder is shown as attached to the footboard of a locomotive-cab and supplied with steam through a pipe a, controlled by a valve, 0, from which a steam-pipe, (I, may lead to the cylinder for operating the locomotive-brakes;

but the location, &c., is immaterial, and the foregoing is given for the purposes of illustration and not for limitation. 'The cylinder A is attached to the foot-board or other support by an intermediate single bracket, D, bolted 5o directlyto the cylinder, as ate 0, and this bracket may be of any shape which the peculiar construction of the engine or equivalent point of attachment demands.

At the outer end of piston B are jaws b, between which is pivoted the brake-lever E, so as to be operated by the piston. This brakelever has in its long arm a series of holes, 6, or equivalent means for adjusting its connection 1 with the brake-chain or equivalent mechanism nearer to or farther from the source of power or piston, and at its opposite end asecond series of holes for adjusting the fulcrum nearer to or farther from the power. By this means the power applied to the brakes may be regulated at will or as necessity dictates. 6

F indicates a frame or bar pivoted at the axis of the cylinder A by a bolt, a, and capable of a turning movement. When adjusted the frame or bar may be fixed or clampedtby a suitable not or its equivalent. The bar termi- 7o nates at one end or affords attachment for a guide, G, which is preferably formed at its extremity into aloop, which, in case of the rupture of the brake-chain, will limit the movement of the lever E, and at its opposite end is pivoted a link, L, adjustably pivoted to the brake-lever E, as at Z, to form the fulcrum of the lever. To accommodate the connection at I this extremity of lever E is preferably curved, as shown.

In applying to use devices embodying my invention the bracket D, having been formed of the required shape to support the cylinder in the position it is to occupy, is bolted or otherwise firmly secured directly to the cylinder and to the "foot-board of the locomotive-cab or other pointof attachment. The nut is loosened and the bar or framellis turned, carrying with it the fulcrum-link L, guide G, and brake-lever E, and rotating the piston until the lever E has 0 assumed the angle required to make a straight connection with the brake mechanism, after which the nut may be tightened to clamp and hold the bar or frame I By this means the position of the lever E may be varied to give 5 it varying inclinations to adapt the devices to the varying height of cab-platforms met with on diflerent locomotives. The slack of the brake-chain may then be taken up and the pow-- er of the lever regulated by shifting the connecroo tions between the chain and lever and between the lever and fulcrum-link, as hereinbcfore specified.

The operation of the devices will be as follows: Steam, air, or fluid, being admitted to cylinder A, will force out piston B, causing the movement of the long arm of lever E, and through the medium of the brake-chain will apply the brakes. Should the brake-chain rupture, the continued outward movement of the lever E will be prevented by the loop of the guide G, and any material injury to thedevices will be avoided.

These devices will not interfere with the use of the hand-brake.

Thematerialadvantagesof my invention are the ability to vary the set or inclination ofthe brake-lever to suit varying heights of cab-platforms, the ability to obtain a straight connection between the brake-lever and brake mechanism, the ability to vary the power with which the brakes are applied, and the protection afforded the devices in case the brakechain ruptures.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-- 1. In a tender or like brake, the combination, with the horizontally-arranged brake-cylinder and its piston, of a brake-lever having its fulcrum supported by the brake-cylinder, said lever being pivotally connected directly to the piston of the brake-cylinder, substantially as and for the purpose specified.

2. In a tender orlike brake, the combination, with the horizontally-arranged brake-cylinder and its piston, of a swiveling fulcrum-frame pivoted on the axis of the cylinder, a brakelever pivotally connected to the piston, and a fulcrum-link pivotally connected to the swiveling fulcrum-frame and to the brake-lever,

substantially as and for the purpose specified.

3. The combination, in atender or like brake mechanism,of the horizontally-arran ged brakecylinder and its piston with the fulcrum-frame pivoted on the axis of the cylinder, the brakelever pivotally connected to the piston and having a series of holes at its ends for the adjnstment of theconnections with the brakes and fulcrum-link, and the fulcrum-link pivotally connected with the fulcrum frame and the brake-lever, substantially as and for the purpose specified.

In testimony whereof I at'fix my signature, in

presence of two witnesses, this 14th day of July, 1881.

DAVID S. RANDOLPH. Witnesses:

.MILLARD F. WATTs, WM. A. MORRIS.

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