US748735A

US748735A - Car-brake

Info

Publication number: US748735A
Authority: US
Publication date: 1904-01-05
Anticipated expiration: 1921-01-05

Description

N0 MODEL.

W. HOUSE. CAR BRAKE..

APPLIGATION FILED APB.. 4. 1903.

PATENTED JAN.5, 1904.

2 SHEETS-#SHEET 1.

PATENTED JAN* 51904.

W. HOUSE.

GAR BRAKE.

APPLIGATION FILED-APB; 4. laos.

2 STREETS-SHEET 2.

N0 MODEL.

l n( d riff Lv VENTUR mi Nonms PETERS no Mnrouwc., wnsnwcwnn n r.

Patented .Tammy 5, 1904.

' PATENT OFFICE.

WILLIAM HOUSE, OF SYRACUSE, NEW YORK.

CAR-BRAKE.

SPECIFIGATIGN forming part of Letters Patent No. 748,735, dated January 5, 1904. Application iiled April 4, 1903. Serial No. 151.018. (No model.)

' .To all whom may concern:

Be itknown that I, WILLIAM HOUSE, a citizen of the United States, anda resident of Syracuse, in thecounty'of Onondaga, in the State of New York, have invented new and useful Improvements in Car-Brakes, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the species of carbrake shown in my Letters Patent No. 707, 331, dated August 119, 1902.

My presentinvention resides in an improved construction ofthe hangers which carry the brake-rollers, and also in improved means for operating said hangers, as hereinafter described, and set forth in the claims, and as illustrated in the annexed drawings, in

which- Figure lis avertical longitudinal section of a car-truck equipped with my invention. Fig. 2 is a vertical transverse section of the hanger which carries-thebrake-roller. Fig. 3 is an inner side 'View of said hanger, taken' in the plane 'indicated by the' dotted line VV' in Fig. 2. Fig. 4 is a vertical transverse sec-4 tion of a modification of said hanger. Fig. 5 is an inner side view taken in the plane indicated by the dotted line -W W in Fig. 4.

represent the car-wheels; T, the trffick-rail,

andB the bottom of the car-body.

a u.y represent the'l hangerswhich are suspended from the truck-frame and yieldingly connected thereto to allow said hangers to move vertically and to swing, with their lower ends, to and from the car-Wheels A A and carry into simultaneous contact with said wheels andadjacent track T the brake-rollers D D, which are carried on the lower ends of the hangers; the said contact producingthe braking effect, as described in my Letters Patent hereinbefore mentioned.

To connect the hanger a to the truck-f ra me, as aforesaid, 1 provide the side bar G with a laterally-projecting shaft b, which is rigidly secured to a shoe c, embracing the said side bar and firmly clamped thereon. The upper end portion of the hanger is formed with a vertical chamber d in its center and provided with vertical slots e e in front and rear of said chamber, through which slots passes the shaft b, the outer end of which is screw-threaded and provided with a nutb to ret-ain the hanger on the shaft.

The brake-,roller v D is automatically lifted 'from the track-rail T by means of a suitable expansive cushion interposed between the support of the'hanger and under side of the top of the hanger. attach to the rigid shaft ha collar f and preferably form the aforesaid expansion-cushion of a spiral spring g, which rides on the collar f and presses upward the upper end of the hanger, as shown in Fig. 2 of the drawings. I do notLhowever, limit myself to the use of said spring, inasmuch as the expansive cushion may be obtained by the use of compressed air, in which instance the upper end For this purpose I may` of the hanger is formed with avertical cylinder h above the slots e e, and closed at its upper end, preferably, by means of a removable cap h', as illustrated in Figs. 4 and 8 of the drawings. In the said cylinder h is a pis` Yton l?, to which are rigidly secured downwardly-extending rods i t, passing looselyl through the collar f and stepped at their lower ends in a plate 1I', disposed below the said collar. From the under side of said collar projects a rigid screw-threaded stud j, passing through the plate t" and provided with a nut j', bearing on the under side of said plate.

In attaching the hanger tothe truck-frame the nutj' is turned on the stud j to move the plate il upward, whereby the rods/L' i impart a like movement to the piston P, thus compressing the air in the cylinder above the piston and simultaneously lifting the hanger to bring the lower ends of the slots e e in contact with the shaft b, rigidly secured to the truck-frame. v

In using the air-cylinder h and piston P for the expansive cushion the air in said cylinder becomes further compressed in the operation of forcing the hanger down to press the brake-roller D into proper frictionalcontact with the track-rail T, as hereinafter de- JCO scribed. In releasing the hanger from said downward pressure the aforesaid compressed air is allowed to expand and lift the hanger, and thus deprive the brake-roller of its hold upon the rail T and car-wheel A.

The brake-roller D is mounted on a square or other angular axle a', to which I apply either two bushings a2, secured to the ends of the axle and journaled in boxes a4 on the hanger a, as shown in Fig. 2 of the drawings, or one bushing a3, fastened to the central portion of the axle, as represented in Fig. 4 of the drawings. In either case the bushing serves to diametrically enlarge the bearings of the axles, and thus sustain the roller more effectually in its contact with the wheel and cause the groove D to obtain a more efficient hold on the flange of the wheel when the brake is applied thereto. For this purpose I preferably use thesingle bushing 0,3 on the center of the axle so as to bring the axial bearing of the roller closer to the periphery thereof. When the bushing is arranged as last described, I prefer to secure in the roller a sleeve a5, which embraces the bushing a3. The axle a in this case is formed with a longitudinal channel c', which communicates with the lubricant-receptacles a6 on the sides of the hanger. The bottom of the channel is provided with ducts a7, leading to coinciding ducts as, extending through the bushing. Where the bushings a2 are applied to the ends of the axle, the lubricant-receptacles a6 are made to communicate with the boxes a4 in which the bushings are journaled, as shown in'Fig. 2 of the drawings. A For moving the brake-rollers D into contact with the wheels A and track T, I prefer to employ suitable mechanism actuated by compressed air, as represented in Fig. l of the drawings, in which S S designate two cylinders which are joined end to end and fastened to the side bar C of the truck-frame by means of brackets S S and placedd inclined toward the lower ends of the hangers a a, arranged between the front and rear wheels A A. In each of said cylinders is a piston n, which has its rod fn. suitably connected to the lower end of the adjacent hanger a. A spring o is interposed between the piston and closed end of the cylinder to force the piston back and cause it to draw the hanger to a position which holds the brakeroller out of contact with the wheel and track.

To force two hangers a a in opposite direction and carry the brake-rollers into contact with the wheels and track, and thus apply the brake, I use the reservoir R, which is charged with compressed air by any of the well-known means. To the junction of the two cylinders S S, I attach a T-shaped pipecoupling Za, to which are connected two pipes Z Z, extending to opposite ends of the car, where they are connected to two-way valves m, only one of which is shown in the drawings. Each of these valves has also connected to it a pipe Z', which communicates with the reservoir R.- Another pipe, n2, which is the waste-pipe, is also connected to the valve m. The valve proper is provided with a suitable handle r for turning it and its ports arranged to cause the compressed air to pass from the pipe Z to the pipe Z when the valve is turned to apply the brake to the wheels and track, and by turning the valve from said position the pipe Z can be made to communicate with the waste-pipe n2. By admitting the compressed air from the pipes Z Z into the cylinders S S said air forces the pistons n n toward the ends of the cylinders nearest to the hangers a, which movement of the pistons forces the said hangers into position to press the brake-rollers D D into frictional contact with the wheels A A and track T. By turning the valves m into a position tocause the pipes Z Z to communicate with the wastepipe 'n2 and at the same time close the communication with the pipes Z Z the compressed air is allowed to lescape from the cylinders S S. The pistons are then forced back by means of the springs 0 o, and thereby remove the brake-rollers from contact with the wheels and track, as represented in Fig. 1 of the drawings.

What I claim as my invention isl. The combination, with the truck-frame, hangers connected to the said frame yieldingly to and from the car wheels and track, and the brake-rollers carried on said hangers, of lubricant-receptacles communicating with the axial bearings of said rollers.

2. The combination, with the truck-frame, of a laterally-projecting shaft secured to said frame, the brake-roller hanger provided with a vertical slot receiving through it the said shaft, a collar fixed to said shaft, and an expansive cushion interposed between said collar and top of the hanger.

3. The combination, with the hanger and brakeroller, of an axial support passing through said roller and secured to the hanger, and a bushing embracing the -axial support as set forth.

4. The combination, with the hanger and brake roller, of an axial support passing through said roller, a bushing embracing said axial support, and lubricant-receptacles communicating with the bearings of the bushing as set forth.

5. The combination, with the hanger and brake -.roller, of an axial support passing through said roller, bushings embracing the axial support and journaled in the hanger, and lubricantreceptacles attached to the hanger and communicating with the journalbearings of the bushings as set forth.

6. The combination with the car-truck and the hanger bifurcated at its lower end and supported on the car-truck movably toward and from the track-rail and wheel, of an axle supported stationary in the bifurcation of the hanger and formed angular in cross-section and with a longitudinal channel in its IOO IIO

` top and lateral. ducts leading from said channel, a bushing fastened to said axle and provided with radial ducts, the brake roller mounted on said bushing, and lubricant-receptacles on the hanger communicating with the aforesaid longitudinal channel as set forth.

7. The combination with the car truck and wheels, of the yieldingly-supported hanger bifurcated at its lower end, an axle supported in the bifn rcation of the hanger and carryingy the brakeroller, and lubricantreceptacles connected to the hanger and communicating with the journals of the brake-roller.

S. The combination with the car truck and Wheels, of the yieldingly-supported hanger bifurcated at its lower end, an axle supported at its ends in the bifurcation of the hanger and formed with a longitudinal channel and with lateral ducts leading from the central portion of the said channel, the brake-roller journaled on Jsaid axle, and lubricant-receptacles connected to the hanger and commu` nicating with the longitudinal channel of the axle.

` 9. The combination with the car truck and wheels, of the yieldingly-supported hanger bifurcated at its lower end, an axle supported stationary at its ends in the bifurcation of the hanger and formed with a longitudinal channel and lateral ducts leading from the central portion of said channel, a bushing fixed to said axle and provided with radial ducts coinciding with the aforesaid ducts, the brake-roller mounted on said bushing, and lubricant-receptacles connected to the hanger and communicating with the aforesaid channel as set forth.

10. The combination with the car truck and wheels, of the yieldingly-supported hanger bifurcated at its lower end, an axle sustained stationary in the bifurcation of the hanger and formed with a longitudinal channel and lateral ducts leading from said channel, a bushing fixed to said axle and provided with radial ducts, a sleeve embracing said hushing,and the brake-roller secured to said sleeve as set forth. e

11. The combination with the car truck and wheels, of the vertically-movable hanger provided with a vertical cylinder above its support and closed at its upper end, a piston in said cylinder and secured to said support, the

brake-roller carried on the lower end of the hanger, and means for forcing the hanger toward the track and wheel.

12. The combination with the car truck and Wheels, of a laterally-projecting shaft secured to the truck-frame, the hanger provided with vertical slots receiving through them the said shaft, a vertical cylinder extending from the upper end of the hanger and closed at its upper end, a piston sustained in the cylinder above the slots of the hanger by the laterallyprojecting shaft, the brake-roller carried on the lower end of the hanger, and means for forcing the hanger toward the track and wheel.

13. The combination With the truck-frame and the hangers movably supported on said frame and carrying the brake-rollers on their lower ends, of cylinders having pistons with their rods connected to the aforesaid hangers, and means for operating said pistons by air admitted and emitted into and from the ,cylinders.

14. The combination with the truck-frame yand the hangers movably supported on said carried ony said hangers,of cylinders disposed in an inclined position toward the lower ends of the hangers, pistons in said cylinders having their rods connected to said ends of the hangers, a compressed-air reservoir, pipes yleading from said. reservoir to the cylinders,

and a valve controlling the passages of air through said pipes as set forth.

16. The combination with the car-truck, the yieldingly-supported hanger, and the grooved brake-roller, of the axle of said roller provided with a circumferentially-enlarged bearing for the roller reducing correspondingly the distance of said bearing from the periphery of the roller as' and for the purpose set forth. WILLIAM HOUSE. Witnesses:

J. J. LAAss, E. L. MEIER.