US764770A - Car truck and brake. - Google Patents

Description

PATENTED JULY 12,1904.

G. ROUY.

CAR TRUCK AND BRAKE.

APPLICATION FILED MAR. a, 1904.

3 SHEETS-SHEET 1.

N0 MODEL.

I I @AHQPIJZ YS wwzza PATENTED JULY 12, 1904 e. ROUY. 7 OAR TRUCK AND BRAKE.

APPLICIATION FILED MAR. 3, 1904.

3 SHEETS-SHEET 2.

NO MODEL.

W iiIJQSSQS PATENTED JULY 12, 1904.

G.ROUY. 7 CAR TRUCK AND BRAKE.

APPLIOATION FILED MAR. 3, 1904 3 SHEETS-SHEET 3.

N0 MODEL.

, Wifzyzsses Patented July 12, 1904.

PATENT EETeE.

GUSTAVE ROUY, OF ST. LOUIS, MISSOURI.

CAR TRUCK AND BRAKE.

SPECIFICATION forming part of Letters Patent No. 764,770, dated July 12, 1904.

Application filed March 3, 1904:.

To (all whom, it may concern:

Be it known that I, GUs'rAvn RoUY, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented anew and useful (Jar Truck and Brake, of which the following is a specification.

This invention relates to car trucks and brakes.

The object of the invention is in a certain and positive manner to effect braking of carwheels in such manner as to insure stoppage of the train in the shortest possible time; furthermore, to dispose the brake-shoes in such manner as to cause them-to exert the most effective pressure upon the car-wheels; furthermore, to dispose the parts of the brake in such manner as to shield them from accidental injury and at the same time to prevent any interference between them and the car-body;

furthermore, to reduce the friction necessary to operate the brake mechanism; further more, to reduce the friction between the'carwheels and their journals and to render frequent oiling of the journals unnecessary, and, finally, to improve, simplify, and render more efficient devices to which the present invention relates.

WVith the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a car truck and brake, as will be hereinafter fully described and claimed.

1n the accompanying drawings, forming a part of the specification, and in which like characters of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhib: ited may be varied or changed as to shape, proportion, and exact manner of assemblage without departing from the spirit thereof.

In the drawings, Figure 1 is aview in plan exhibiting a car truck with the improved braking mechanism of the present invention applied thereto. Fig. 2 is a view in longitudinal vertical section taken on the line 2 2, Fig. 1. Fig. 3 is aview in transverse section Serial No. 196,434. (No model.)

I taken on the line 3 3, Fig. l, and looking in the direction of the arrow thereon. Fig. 4c is a perspective detail view of one of the brakeshoe beams with the parts separated.

The truck herein shown is substantially the same as thatillustrated in a patent granted to me for a car-truck February 26, 1901, No. 669,002, and is constructed generally as follows:

The frame of the truck comprises parallel longitudinal beams l and 2, arranged in pairs and constituting the sides of the frame, and transverse beams 3 and 4. The outer side beams 2 are formed at their ends with recesses 5 to receive lugs or tongues 6, formed on the ends of the cross-beams 3 and 4, and the ends 7 of the inner side beams 1 extend through openings 8, formed in the cross-beams 3 and 4 adjacent to the ends thereof. The ends of the several beams are secured in their assembled positions .by vertical pins 9, which extend through suitable openings formed in the beams, as illustrated in Fig. 1, and by this construction the use of bolts for securing the parts of the frame together is avoided and the consequent annoyance and danger incident to theloss or loosening of securing-nuts employed with bolts.

The side beams 1 and 2 are centrally recessed to form seats 10, upon which are supported plates 11, having recesses 12 on their upper faces to receive the lower ends of the coil-springs 13, the upper ends of Which are supported in recesses formed on the under surfaces of the ends of a bolster 14:, which forms a yielding support for the center bearing of the car.

l5 and 16 designate cross-braces, having their ends 17 projecting upwardly at right angles and formed with openings which register with openings 18 in the side beams 1 and 2 to form bearings for short axles 19, one for each wheel 20. The inner ends of the axles 19 are secured on the inner sides of the arms 17 by pins 21. The wheels 20, as clearly illustrated in the drawings, are mounted upon the axles 19 between the side plates 1 and 2 and are provided with roller-bearings 22, which are interposed between the axles and the central hub-opening of the wheels. The cross-braces 16 serve not only to brace the frame transversely and to connect the inner side beams 1, but also to support the brake mechanism, the same being constructed and operating substantially as shown in a patent granted to me December 4, 1894, No. 530,460, and comprises screw-posts 23, supported in any suitable manner upon cross-braces 16, as by providing the lower end of each post with a polygonal head 24 to engage a seat 25 in the upper side of the cross-brace and furnishing a collar 26, which is provided with depending arms 27, projecting below the under side of-the cross-brace, the annular portion of the collar bearing upon the head of the post and the arms being held associated with the cross-brace through the medium of asplit or cotter pin 28, passing through openings in the said arms. Surrounding each post is a coiled spring 29, which bears at its lower end upon the collar 26 and has its upper end engaged by a brake-beam 30, which forms one of the essential features of the present invention. The portion of the post extending through the beam is provided with threads 31, which are disposed on a very sharp or long pitch, said threads being engaged by a winged nut 32. As it is designed that the brakes shall be taken ofi' the wheel automatically,a spring 29 is provided, which, as will be apparent, willexert a constant upward thrust against the under side of the beam and tends to hold the brakeshoes normally out of engagement with the car-wheel. To facilitate the upward movement of the brake-beam when the brakes are released, antifriction-bearings are employed, in this instance balls 33, which work respectively in a race 34, formed in the under side of the winged nut, and a race 35, formed in the upper side of a bearing-disk 36, resting upon the brake-beam. The winged nut is held combined with the post through the medium of a washer or disk 37 and a split pin 38, passing through the upper end of the post above the winged nut. A description of only one of the posts and its accessories is given, for the reason that the other post and its accessories are 'constructed in exactly the same manner, so that an explanation of one will serve for both. The terminals of the wings of the nuts are provided with orifices, and these are engaged in any suitable manner by connecting-rods 39, which operate to transmit motion from one of the winged nuts to the other, so that it is immaterial which of the nuts is actuated, as the other will be similarly moved, and thus cause simultaneous application of the brakes to all of the car-wheels of the truck. Connected with each of the Winged nuts is a bearing-rod 39, which may connect with any suitable source of power, such as withthe cylinders of the air-brakes, or other suitable mechanism such as are ordinarily employed for operating car-brakes. With the exception of the ballbearings, which are combined with the screw posts, the parts of the mechanism as thus far described are shown in the patent referred to.

The main feature of the present invention which differentiates this device from the said patent is in the provision of two brake-shoes for each wheel and in the manner of disposing these brake-shoes so as to cause them'to exert a downward pressure upon the carwheel, thus to effect its certain and. instantaneous locking, if necessary, as in case of an emergency. A further and essential difference between the brake-beam of the present invention from what has been shown in the patent is that it is constructed in such manner as to permit the upper ends of the screw-posts to occupy a plane coincident with the upper side of the car-wheels or slightly below the same, this for the purpose of preventing any interference between the posts and the carbody, and, further, to render unnecessary any blocking up or raising of the car-body when the brake mechanism of this invention is applied to a truck already in use.

The brake-beams at each end of the truck are counterparts, and only one will therefore be described. The brake-beam (designated generally 40) comprises a head or disk 41, hav I ing a circular orifice to receive the screw-post, and projecting at upward angles from each side of the head or disk and diverging therefrom are the brake-shoe-carrying arms 42 in this instance four in numberthe angle of divergence of the arms being such as to cause the brake-shoes 4:3 to press upon the upper portion of the tread of the car-Wheels. By dishing the brake-beam so as to throw the head. or disk in a plane below the upper periphery of the car-wheel the upper terminals of the screw-posts may be disposed below or on the same plane with the upper tread portions of the wheels, and thus be removed from possible interference with the carbody. As will be seen by reference to Fig.- 2, the outer ends of the brake-shoe-carrying arms 42 are polygonal, and the shoes are held in place thereon in any suitable manner, as by the employment of cotter-pins 4 4, which while positively precluding accidental separation of parts will permit ready removal of the shoes where repairs are necessary. When draft is applied to either of the rods 39 the winged nuts 32 are turned and by coaction with the threaded post force thebrake-beams 4E0 downward against the stress of the springs 29, thereby causing the brake-shoes to im pinge the tread of the car-wheel and effect braking. Upon the release of the power that applies the brakes the springs 29 operate automatically to return the brake-beam to its normal position.

While it is stated that roller-hearings 22 are employed in conjunction with the carwheels 20, it is to be understood, of course, that, if preferred, ball-bearings may be employed, and these may be arranged in cages, as usual, and placed in the axle-openings of the wheels.

The brake-operating mechanism in this invention and the brake itself will be found thoroughly efficient in operation for the purpose designed and may under all conditions while in use be relied upon for doing effective work.

Having thus fully described the invention, what I claim is 1. In a car-truck, the combination with a post, of a brake-beam embodying in a single structure a head or disk to work upon the post and upwardinclined outward diverging brake-shoe arms. and means for moving the brake-beam upon the post to effect braking.

2. In a car-truck, the combination with a post, of a brake-beam embodying a head or disk movable on the post and provided in its upper face with a ball-bearing race, brakeshoe arms carried by thehead or disk, and a rotativc element for moving the brake-beam upon the post, said element being provided in its under face with a ball-bearing race registering with that of the head or disk.

3. In a car-truck, the combination with a screw-post, of a brake-beam having a head movable thereon and carrying upward-inclined outward-diverging brake-shoe arms, a winged nut coacting with the threads of the post, and ball-bearings interposed between the nut and the head.

4. In a car-truck, a brake-beam comprising a head or disk and brake-shoe arms combined therewith, the arms being disposed outwardly on diverging lines to bring the brake-shoes on opposite centers of the car-wheels, and being dished toward the head or disk to throw the latter below the plane of the car-wheels.

5. In a car-truck, the combination with a cross-brace provided intermediate of its ends with a seat, of a screw-post having a polygonal head to engage the seat, a collar fitting over the post and bearing upon the head and having depending arms projecting below the cross-brace, means for holding the collar associated with the cross-brace, a brake-beam movable on the post and having pairs of brake-shoes, and a winged nut coacting with the post to effect depression of the brakebeam.

6. In a car-truck, the combination with the wheels, of a brake-beam embodying a head and arms, the latter carrying pairs of shoes disposed on each side of the vertical center of the wheels, and at such distance below the upper face of the wheel as to cause the shoes, when power is applied thereto, to exert downward pressure upon the wheels.

7. In a car-truck, the combination with'a screw-post and a brake beam having a head movable thereon, of a winged nut coacting with the threads of the post to depress the head, and ball-bearings disposed between the nut and the head.

8'. In a car-truck, the combination with a screw-post, of a brake-beam having a head movable thereon, a spring on the post upon which the brake-beam rests, a winged nut coacting with the threads of the post, and ballbearings disposed between the nut and the head.

9. In a car-truck, the combination with a post, of a brake-beam embodying ahead or disk movable on the post and provided in its upper face with aball-bearing race, upwardlyinclined outwardly diverging brake shoe arms carried by the head or disk, and a rotative element for moving the brake-beam upon the post, said element being provided in its under face with a ball-bearing race register ing with that of the head or disk. I

10. In a car-truck, the combination with a cross-brace provided intermediate of its ends with a seat, of a screw-post having a polygonal head to engage the seat, a collar fitting over the post and bearing upon the head and having depending arms projecting below the cross-brace, means for holding the collar associated with the cross-brace, a brake-beam movable on the post, and a winged nut coacting with the post to effect depression of the brake-beam.

11. As a new article of manufacture, a brake-beam embodying in a single structure a head or disk and angularly-disposed upwarddiverging brake-shoe arms carried thereby.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

GUSTAVE 'ROUY.

Witnesses:

A. H. SMITH, JOSEPH BEHRLE.

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