US1132695A - Car-brake. - Google Patents

Description

W. STEINBURG & D. WEGNER.

CAR BRAKE.

APPLICATION FILED FEB.26,1913.

Patented Mar. 23, 1915.

2 SHEETS-SHEET 1.

my M m. M m mm M m m w ,NORRIS PETERS 60.. PHOTD-LITHQ, WASHINGTON, D. C.

W. STEINBURG & D. WEGNBR.

GAR BRAKE.

APPLICATION FILED FEB.26,1913.

1,132,695. Patented Mar. 23, 1915.

2 SHBETSSHEBT 2.

THE NORRIS PETERS COHFHOTOLITHUH WASHINGTON, D. C,

WILLIAM STEINBURG, or JAMAICA, Am) DANIEL wn-ennn, on NEW YORK, N. Y.

CAR-BRAKE.

Specification of Letters Patent.

Patented Mar. as, 1915.

Application filed February 26, 1913. Serial No. 750,829.

To all whom it may concern:

Be it known that we, WILLIAM STEINBURG and DANIEL WEGNER, a subject of the Czar of Russia and a citizen of the United States, and residents of Jamaica, county of Queens, and State of New York, and of New York, county and State of New York, respectively, have invented a certain new and useful Improvement in Car-Brakes, of which the following is a full, clear, and exact specification.

This invention relates to a class of brakes adapted to be used in conjunction with railway cars.

Our invention has for its object primarily to provide a form of mechanism, or brake designed to be applied to the cars of a railroad for use in emergency to stop a train within a limited distance when traveling at a high speed, thus serving to prevent accidents especially when the danger is near by applying the brakes to lessen the speed and then overcoming the momentum of the train by reversing the rotation of the wheels of the cars, and which is adapted to be employed separately upon a car, or used in conjunction with the air brake mechanisms ordinarily in use.

7 Another object of the invention is to provide spring actuated means adapted to grip a number of the wheels of the car for yieldingly checking the forwardrevolution thereof when the brakes have been applied, and which serves when the momentum of the train has thereby been oifset to cause the wheels to rotate reversely for moving the train in an opposite direction as well as avoiding all sliding of the wheels upon the tracks to prevent flattening of the'periphcries of the wheels.

A further object of the invention is to provide a car brake which is operated preferably by compressed air, and is adapted to be employed in a manner so that all of the cars of a train may be simultaneously controlled.

With these and other objects in View, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

In the drawings, Figure 1 is a view, partly broken away, of the underside of the body of a car, showing one form of car brake embodying our invention as applied to the trucks and wheels thereof. Fig. 2is an enlarged elevation of two of the clutches and the operating parts thereof employed in the brake as applied to two of the wheels of a car. Fig. '3 is a detail view, partly in section, taken on the line IIII of Fig. 2.

fragmentary, of the means adapted to permit the brake to be operatedby compressed air, and Fig. 9 is an enlarged fragmentary view, partly in section, of the form of valve for controlling the air pressure Feed.

The car brake comprises two corresponding sections 10 and 11 both of which are appliedto the trucks 12 and 12 underneath the body of a car, as 13, and said'sections are independently operable. One of the sections is employed for stopping the car when moving in one direction by checking the rotation of the wheels 14 at one end of the car and also checking in unison therewith the set of wheels 14" at the opposite side of the other end of the car. The second section is employed for stopping the car when moving in an opposite direction by checking the set of wheels 15 at the end of the car which are opposed to the wheels 14* and also simultaneously checking the set of wheels 15 at the other end of the car which are opposed to the wheels 14. I

The sections 10 and 11 of the car brake are similarly constructed, and each of said sections has a plurality of gripping elements, or clutches 16 all of which are alike in formation. Each of the clutches has two members, or disks 17 and 18. The disks 17 have central openings through which are passed the axles 19 of the wheels of thecar, and each of'said disks is secured by bolts, or otherwise to the inner surface of one of the wheels. Projecting from the exposed face of a sleeve 22 which is slidably mounted upon the axle of the wheels of the car. The

central part of the periphery of the sleeve 22 is longitudinally cut-out, or slotted, at 28, and in the spaced lugs 28 and 28 thus formed is held a rod 24:. Upon the rod 24 is movably held one end of a convoluted spring 25, and the other end of said spring is rigidly held to a rod provided in a bracket 26 secured to one of the cross-beams of the truck of the car. All of the springs 25 are made of unusual strength to withstand the force of a great strain. The springs 25 of the section 10 are arranged so that When the car is moving in one direction and the teeth of the disks 18 are directed into engagement with the teeth of the disks 17 of the wheels controlled by said section the rotation of the wheels and the disks will be against the tension of these springs which in turn will yieldingly stop the disks and the wheels for checking the movement of the car, and the springs 25 of the section 11 are arranged so that when the car is moving in an opposite direction the checking of the car is accomplished by a like action against the tension of this set of the springs, as will be hereinafter more fully described.

In the exterior peripheral surface of each of the sleeves 22 adjacent to the end thereof which is opposite to its toothed face disk 18 is a groove 27 and in said groove is movably disposed the pins provided at the forked end 28 of a lever 29 which serves as means to shift the sleeve 22 and the disk 18 of each of the clutches 16 upon the axles of the wheels. The lever 29 is fulcrumed, at 80, to an arm 81 projecting from the crossbeam of the truck of the car to which the bracket 26 is secured, and said lever is of sufficient length to extend slightly above the cross-beam. To the upper part of each of the levers 29 is fastened one end of a spring 82 having its other end secured to the crossbeam, and each of said springs serves to swing the levers in a direction for holding the sleeves 22 upon the axles of the wheels so that the teeth of the disks 18 will be normally free from mesh with the teeth of the disks 1?. The end of each of the levers 29 opposite to its forked end is pivoted to one end of a link 88, and each of said links has a bifurcated opposite end. Between the prongs of the bifurcated end of each of the links 88 is a collar 84 revolubly held upon the arm 85 of a lever 86, and the prongs are pivotally held by pointed screws, or the like to each of the collars. Each of the links 88 together with each of the collars 84 thereby serve as a universal joint for permitting the levers to be swung in directions against the tension of the springs 82. Each of the levers 86 is substantially L-shaped so as to provide a second arm 87, and each of said levers at the uncture of its arms is pivotally held to a bolt 88 extending above the crossbeam of the truck of the car.

The free end of each of the second arms 87 of the levers 86 of the operating mechanisms of the clutches 16 for controlling the wheels 1% are pivotally connected to a movable common rod 89 which extends longitudinally underneath the body of the car, and said rod is pivoted at 40 to a lever, or bar 41 pivotally held to a bolt, as at 1 2, or the like which may extend from the underside of the body of the car. One end of the lever, or bar 11 is pivoted to one end of a movable common rod 18, and to the opposite end portion of said rod are pivotally held the free ends of each of the second arms 87 of the levers 86 of the operating mechanisms of the clutches 16 for controlling the wheels 1 1 The free ends of each of the second arms 87 of the levers 86 of the operating mechanisms of the clutches 16 for controlling the wheels 15 are pivotally connected to a movable common rod 44 which also extends longitudinally underneath the body of the car, and said rod is pivoted, at l5, to a lever, or bar t6 pivotally held to a bolt, as at 17, or the like which may extend from the underside of the body of the car. One end of the lever, or bar 5L6 is pivoted to one end of a movable common rod 48, and to the opposite end portion of said rod are pivotally held the free ends of each of the second arms 87 of the levers 86 of the operating mechanisms of the clutches 16 for controlling the wheels 15*.

For the purpose of permitting each of the sections 10 and 11 to be independently operated by compressed air underneath the body of the car is arranged a cylinder &9 having a central partition 50 whereby two chambers 51 and 52 are provided therein, and said chambers have inlets 58 and 5%, respectively, for admitting air under pressure thereto. Reciprocable in the chamber 51 is a piston 55 which is pivoted to one end of a rod 56 having its other end pivotally held to the lever, or bar 41, and reciprocable in the chamber 52 is a piston 57 which is pivoted to one end of a rod 58 having its other end pivotally held to the lever, or bar 46. in the inlets 58 and 5-1 of the cylinder 49 are the ends of the cross-branch of a T-shaped pipe 59, and serving to control the feed of the compressed air through the T-shaped pipe for alternately supplying the chambers 51 and 52, interposed in the cross-branch of the said pipe is a cut-off valve 60 which may be of any well-known, or preferred type. To the other end of the T-shaped pipe 59 is connected a pipe 61 which is of sufficient length to extend from end to end of the body of the car, and the said pipe 61 leads to the usual source of air pressure supply.

As hereinbefore explained, the sections 10 and 11 of the brake are independently op- Secured erable, one being adaptedtoeheck-the car when moving in one direction, and 'the'other section being adapted-tostop the'car when moving in an oppositedirection. "The air pressure supply to the inactive section of the brake is thencut-offthrough the medium ofthe valve 60-which will permit themotive agent to be supplied to only one of the chambers of the cylinder 49. When-the air pressure is applied for operating, for instance, the section 10 of the-brake the'piston '18 into mesh with the teeth of the disks 17.

The rotation of the wheels 14 and the disks 17 and 18 will be against the tension of the springs 25, and the movement of "the car will be gradually checked. When the momentum off the moving car is-overcome the energy stored thereby in the springs will force a reverse rotation of the wheels 14: and

the disks 17 and 18 for moving the car for a a distance in an opposite direction, and in this manner the car may be stopped within a limited distance. This form of -brake may be employed-separately upon a single car, or

a train or cars, but is preferably adapted for use in emergency ill-con unctlon with the usual air brake mechanisms especially when it is desired to quickly stop the train. In

such instances the regular air brake is first applied, and after the air pressure supply thereto is cut-off this brake is then operated in the manner above described. The train will not only be stopped thereby within a limited distance, but the flattening of the peripheries of the wheels of the cars will also be prevented. V

In the foregoing description, we have embodied the preferred form of our invention, but we do not wish to be understood as limiting ourselves thereto, as we are aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore we reserve to ourselves the right to make such changes as fairly.

fall within the scope of the appended claims.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. In a car brake of the character described, a plurality of clutches, each having two members, one secured to the inner face of one of the wheels of the car, and each of the second members being slidably mounted on each axle of the wheels, said second members permitting the axles to be rotated independently thereof, and each of said second members being adapted to engage one of the first members of each clutch, 'a cylinder provided upon the car and adapted to receive air under pressure, a piston reciprocable in the cylinder, a lever having one end pivoted to the piston, a common rod having-one end pivoted to the lever, means connecting the opposite end portion of the rod to two of the second members of the clutches on-one'side of the car so-as to slide the second members into engagement with the first members of the clutches when the rod is moved by reciprocation of said piston, and means adapted to yieldingly check the rotation of the wheels and both members of each clutch when in engagement.

2. In a car brake of the character described, a plurality of clutches, each having ed on each axle of the wheels, said second members permitting the axles to be rotated independently thereof, and each of said second members being adapted to engage one of the first members of each clutch, a cylinder provided upon the car and adapted to receive air under pressure, a piston reciprocable in the cylinder, a lever having one end pivoted to the piston, a common rod having one end pivoted to the lever, means connecting the opposite portion of the rod totwo ofthe second members of the clutches on one side of the car so as to slide the second member into engagement with the first members of the clutches when the rod is moved by reciprocation of said Piston, and

-a plurality of springs, one'provided upon the second member of each clutch and adapt.-

ed to yieldingly check the rotation of the -wheels and both members of each clutch when in engagement.

3. In a car brake of the character described, .a plurality of gripping elements, each having a toothed member secured to the inner face of one of the wheels of the car, and each having a second toothed member slidably mounted on each axle of the wheels, said second members permitting the axles to be rotated independently thereof, and each of said second members being adapted to engage oneof the first members of each gripping element, a cylinder provided upon the car and adapted to receive air under pressure, a piston recipr'ocable in the cylinder, a lever having one end pivoted to the piston, a common rod having one end pivoted to the lever, means connecting the opposite end portion of the rod to two of the second members of the gripping elements on one side of the car so as to slide the second member into engagement with the first members of the gripping elements when the lib:

rod is moved by reciprocation of said piston, and means adapted to yieldingly check the rotation of the wheels and both members of each gripping element when in engagement.

4C. In a car brake of the character described, a plurality of gripping elements, each having a toothed member secured to the inner face of one of the wheels of the car, and each having a second toothed member slidably mounted on each axle of the wheels, said second members permitting the axles to be rotated independently thereof, and each of said second members being adapted to engage one of the first members of each gripping element, a cylinder provided upon the car and adapted to receive air under pressure, a piston reciprocable in the cylinder, a lever having one end pivoted to the piston, a common rod having one end pivoted to the lever, means connecting the opposite end portion of the rod to two of the gripping elements on one side of the car so as to slide the second member into engagement with the first members of the gripping elements when the rod is moved by reciprocation of said piston, and a plurality of springs, one provided upon the second member of each of the gripping elements, and serving to yieldingly check the rotation of the members of two of the gripping elements when in engagement for yieldingly checking two of the wheels in unison.

5. In a car brake of the character described, a pluralityof toothed disks, each secured to the inner face of one of the wheels of the car, a plurality of second toothed disks, one slidably mounted on the axle of each of the wheels, said second disks permitting the axles to be rotated independently thereof, and each of said second disks being adapted to mesh with one of the first disks, a cylinder provided upon the car and adapted to receive air under pressure, a piston reciprocable in the cylinder, a lever having one end pivoted to the piston, a common rod having one end pivoted to the lever, means connecting the opposite end portion of the rod to two of the second disks on one side of the car so as to slide the second disks into engagement with the first disks when the rod is moved by reciprocation of said piston, and means adapted to yieldingly check the rotation of the wheels and each pair of the disks when in mesh.

6. In a car brake of the character described, the combination with the wheels and axles of a car, of a plurality of ratchet toothed disks secured to the inner faces of the wheels of the car, one of said disks on each of the wheels, a plurality of ratchet toothed disks slidably and rotatably mounted upon the axles of the car one adjacent to each of the disks upon the wheels, and adapted to be engaged or disengaged therewith by slidable movement upon the axles of the car, a cylinder upon the car adapted to receive air under pressure, a piston reciprocable in the' cylinder, a lever having one end pivoted to the piston, a rod having one end pivoted to the lever, said rod being adapted to actuate a plurality of arms, each of said arms being provided upon one of the slidable rotatable disks whereby one series of said disks may be thrown into engagement with the disks secured to the wheels by the reciprocable movement of the piston and the rod, and a plurality of springs one provided upon each of the slidable rotatable disks and serving to yieldingly check the rotation of the disks when in mesh for yieldingly checking the wheels in unison, substantially as shown and described.

This specification signed and witnessed this twenty-fifth day of February A. D.

WILLIAM STEINBURG. DANIEL WEGNER.

l/Vitnesses:

Row. B. ABBOTT, PETER STELLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

Images