US259004A - Locomotive-brake - Google Patents

Description

W. B. GUERNSEY & W..B. TURNER. I

(No Model.)

LOOOMOTIVE BRAKE:

N0. 259,004i Patented June'6, 1882.

flib UNITED STATES PATENT OFFICE.*

WILLIAM B. GUERNSEY, OF NORWICH, AND WILLIAM B. TURNER, OF NEW YORK, N. Y., ASSIGNORS OF ONE-THIRD TO THE TORREY AUTOMATIC BRAKE COMPANY, OF NEW YORK.

LOCOMOTlVE-BR AKE.

SPECIFICATION forming part of Letters Patent No. 259,004, dated June 6, 1882.

Application filed March 16,1882. (No model.)

To all whom it may concern 7 Be it known that we, WILLIAM B. GUERN- sin, of Norwich, in the county of Ohenango and State of New York, and WILLIAM B. TURNER, of the'city, county, and State of New York. both citizens ofthe United States, have invented a new and useful Improvement in Locomotive-Brakes, of which the following is a specification.

10 Our invention relates to driver-brakes for locomotives, and its object is to provide means for applying equal and simultaneous pressure to both sides of each of the wheels.

Equalizing-levers have long been used for r 5 applying pressure simultaneously to both sides of car-wheels, the power being exerted through a the medium of transverse beams extending from side to sidebeneat-h the deck. Such appliances are manifestly inapplicable to loco- 2o motives.

Brake-shoes-have been arranged between the opposed faces of two adjacent locomotivewheels, with means for applying the pressure simultaneously to such opposed faces. This mode of operation is objectionable, in that it results in unbalanced sidewise pressure against the wheels, which acts on the bearings with very injurious effect.

Our invention consists in mechanism by which equal pressure is applied simultaneously to opposite sides of the respective drivingwheels by means of attachments and connections in the plane of the wheels, or nearly so. To this end we hinge the brake-shoes to levers 3 5 constituting their mode of support and attachment, and connected together by bars or rods 1 above the wheels in such a manner that a sib multaneous movement may be applied to the 1 whole from a common motor.

4o Our invention further consists in employing and combining for this purpose levers of diflercut orders, substantially as hereinafter de portions of the frame of a locomotive with our systemof brakes applied under several modi- 5o fications.

"A A represent brake-shoes, jointed at B B to levers G O, fulcrumed at c 0, respectively,

to the locomotive-frame F, or to a suitable attachment thereto, 0 0 being levers of the first order, and G G levers of the second order. The upper ends of the levers O and O of each pair are connected by rigid rods or bars E E,

to the inner ends of which rods are jointed rigid links J, connected by a Y-piece, I, for imparting simultaneous movement thereto in either direction.

The steam-cylinder for actuating the brakes may be mounted upon the frame For other part of the locomotive in any suitable place or position.

We have shown a cylinder at G, the pistonrod of which is connected by a pitman, H, with one end of a bell-crank lever, L, fulcrumed at l, the arm L of which is jointed at t' to the extremity of the Y-piece I. It will now appear that a draft or tensional strain applied to the pitman H by steam in the cylinder G will,

through the medium of the bell-crank lever L L, Y-connection 1, links J, and rods E, force all of the shoes A A A A simultaneously in contact with the treads of the driving-wheels D D, thus applying braking-pressure with equal force on the opposite sides of each wheel.

It preferred, the cylinder may be mounted So in vertical position between the wheels, as shown in dotted lines at G, so as to act on the Y-piecesI bya direct thrust of its piston -rod H, with the effect already described.

As another modification, we have shown in 8 5 dotted lines at G a horizontal cylinder above the Wheels, which may contain two pistons, the steam being admitted between the same, causing them to exert a direct thrust on the bars E E through their piston-rods H or a 0 single piston may be used in the cylinder G with like effect by transposing the levers O O of one of the wheels only, so that pressure may be applied simultaneously to the inside shoes by means of one lever of the first and one of 5 the second order by a longitudinal thrust in one direction, and in like manner to the outside shoes by one lever of the first order and one of the second.

A brake system constituted substantially as above described is of course used on each side of the locomotive, and, if desired, the two systems may be connected by a transverse shaft taking the place of the fulcrum l, which for this purpose may be placed either above or below the boiler, thereby enabling the brakes on both sides of the locomotive to be actuated simultaneously by a single motor.

Having thus described our invention, the following is what we claim as new therein and desire to secure by Letters Patent:

1. In a driver-brake forlocomotives,tl1c combination of a suitable motor, one or more pairs of brake-shoes, arranged on opposite or nearly opposite sides of the respective wheels, levers to which said brake-shoes are hinged, constituting the means of support, attachment, and operation of the shoes, and connections between the levers, all in the plane of the wheels, or nearly so, substantially as herein shown and described.

2. In a driver-brake for locomotives, the combination of a suitable motor and one or more pairs of brake-shoes, applying simultaneous pressure to opposite or nearly opposite sides of each driving-wheel, and actuated simultaneously by levers of different orders, constituting the means of attachment and suspension of the brake-shoes, the whole being in the plane of the wheels, or nearly so, substantially as hereinbeforc set forth.

3. In a driver-brake for locomotives, a system of brake-shoes mounted or suspended by levers of different orders connected substantially as set forth, so as to communicate simultaneously an equal motion to all the shoes of 40 the system from a common motor, the said brake-shoes and connections being in the plane of the wheels, or nearly so.

W. B. GUERNSEY. WILLIAM B. TURNER.

Witnesses FREDERICK GRAsMUoK, O. H. BETZEMAN.

Images