US695361A

US695361A - Brake mechanism.

Info

Publication number: US695361A
Application number: US57420A
Authority: US
Inventors: Walter S Adams
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-12-18
Filing date: 1901-04-25
Publication date: 1902-03-11
Anticipated expiration: 1919-03-11

Description

Patented Mar. ll, I902 W S. ADAMS. BRAKE MECHANISM.

(Application filed Apr. 95, 1901.)

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W. S. ADAMS.

BRAKE MECHANISM.

(Application filed Apr. 26. 1901.)

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"larly to brakes employed on pivotal trucks U IT D STATES nrnN'r Prion.

WALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN A. BRILL, OFPHILADELPHIA, PENNSYLVANIA.

BRAKE MECHANISM.

SPECIFICATION forming part of Letters Patent No. 695,361, dated March 1 1, 1902. Original application filed December 18,1900, Serial No.'40,238. Divided and this application filed April 25, 1901.. Serial To all whom, it may concern.-

Be it known that I, WALTER S. ADAMS, a citizen of the United States, and a resident of the city of Philadelphia, county of Philadelphia and State of Pennsylvania, have invented certain new and usefulImprovements in Brake Mechanisms, of which the following is a specification.

My invention relates to improvements in brake mechanisms or apparatus for car-trucks of the class recited in my application for Letters Patent, Serial No. 40,238, filed December 18, 1900, of which this application is a division.

Considered in some of its aspects, my invention may be said to relate more particuand as to others as being especially adapted to the outside suspension motor type of truck that is,where the motor is carried mainly upon the truck-axle with its free end suspended. from the end of the truck-frame outside the wheel-base, and in still others as being applicable -to single and double motor trucks.

It has been found troublesome in former mechanisms and apparatus of this general type to maintain a proper working connec tion between the main brake-lever carried by the truck and the rod that runs to the. source of power on the car-body when the car is on a curve by reason of the differentiations of the center lines of the truck and car-body.

It has been also very difficult in the suspension-motor type of truck to-provide a suf. ficient clearance between the brake mechanism and the motor and still maintain its central and stable point for the application of the brake-power. Again, grave difliculties, have been encountered in construction of brake mechanisms which canbe used with a two-motor truck-that is, theone with a motor at each end for each axle-and which may be readily applied to asingle-motor truck on account of the'equal'pressure required in one caseupon the-brake-shoes and the unequal pressure required. in the other case. This adj ustability, if attained, has only been had through great complexity of parts and the utilization of space otherwise necessary for the mounting, andoperation of the motor.

(N0 model.)

and economical manner.

My present invention therefore resides in the construction and combination of parts hereinafter described, and finally pointed out in the claims, cross-reference being had to my prior application.

In the drawings forming part of this specification, Figure 1 is a plan View of a doublemotor truck having myimproved brake mechanism applied thereto; and Fig. 2 is a longitudinal sectional elevation of the same substan tially on the plane of the line m 00, Fig. 1.

In the figures, l and 2 denote the wheels and axles; 3, the sides of the frame of the truck which contain the inverted-U-shaped which are connected by angle-iron cross-bars or end pieces 8 8, which are curved outwardly at 8 to provide clearance for the suspension of the free end of the motor thereon, the other end of the motor being supported upon the axle and being geared thereto in the'usual way. At 9 are the usual bolster-transoms, which in this instance are secured to the brackets 3, formed integrally or otherwise attached to the side frames 3.

The brake mechanism or apparatus may be suspended from the frame in any desired 1nanner,b'ut preferably from the transoms and the pieces 8. Again, the means employed for suspension may be varied at will; but I prefer the liuk form, as herein shown and described.

'Referring to the figures, each set ofbrakeshoes 18 are fixed on the beams 17, which shoes are suspended on the end pieces 8 by links 19 in the usual way. These beams 17 are swung back and forth to apply or release the shoes, preferably through the medium of the brake-rods 16, which ext-end from the brakebeam, preferably adjacent the shoes, which beams have enlargements 17 to firmly re ceive the rods and which are curved to conform to the curve of the cross-bars 8 to clear the motor. 'These rods extend inwardly toward the center of the truck 'and are pivotally secured at their inner ends to the transversely-disposed equalizing-bars 22 22, having eyebolts 22 adjacent their ends and which are pivotally hung from the transoms 9 by the links 21, which are in turn supported from the strap-brackets 20, secured to the transoms, the links pivotally engaging the eyebolts.

Upon a pin 24, secured to the bracket 22 at the center of the equalizing-bar-22, is pivoted an upwardly-extending brake-lever '25,

vwhich is the main brake-lever and which is located, as shown, close to the center of the truck and upon, or substantiallyso, the longitudinal axis of the truck, to the upper end of whichis connected by a pin 25 the rod 26, running to the source of power on the carbody.

Pivotally suspended from the central portion of the transom by means of the straphanger 12 and pin 12 is a pendent equalizing-lever 12, provided with a series of holes 13 along its length, the lower end of the lever being secured to the equalizing-bar 22 by the pin 23, held in a jaw-plate 23, which in turn is secured to the equalizing-bar. A connecting-rod extends between the

levers

12 and 25 and is adjustably connected to them in any desired manner; but as shown it. is pivoted by the pin 15" at one end to the lever 25 near its fulcrum, and at its other end it is adj ustably attached to the lever 12 by the pin 14 and holes 13. The function of these various holes 13 is to be able to cause equal or different pressures upon the two sets of brakes. When two motors are used, equal pressure is desirable, and when but one is employed unequal pres= sure is desired. This feature of adj ustability is desirable in the brake for a double-motor truck, especially when it may be required for exigencies of service to employ but one mo-.

tor, take up shocks, and other often-prevailing conditions. To obtain one or the other in this mechanism, it is only necessary to adjust the connection of the equalizing-lever and the connecting-rod15,a'nd thus the brake can be readily suited to one kind of truckby the simple adjustment referred to. clear that this adjustment can be had upon the lever 25 in the same way as upon the lever 12. It will be noticed that this arrangement and construction allows the power end of the brake-lever 25 to be located on the longitudinal axis and substantially at the trans- It is ters Patent, is-

1. The combination with a car-truck having bolster-transoms, outside brake-shoes for the wheels, beams'connectin'g the shoes for each pair of wheels and suspended from the ends of the truck-frame, aplurality of equalizing-bars each connected with one of. the brake-beams and each independently supported from the transoms, an upright main brake-lever fulcrumed near its lower end to one of said equalizing-bars, and to the upper end of which power is applied .t-o'operate the brakes, an equalizing-lever pendentfrom one of the transoms and connected with the other equalizing-bar, and means connecting the lat ter lever with the main brake-lever whereby both sets of shoes are simultaneously operated from said main brake-lever.

.2. The combination in a pivotal car-truck,

-of outside sets of brakeshoes'and beams, an

upright brake-lever, a plurality of transverse equalizing-bars between the beams, an intermediate equalizing lever, an intermediate connection between the bars, said lever and beams, the power end of the brake-lever be= ing substantially at the center of the truck.

. 3. The combination in a pivotal car-truck, of outside sets of brake shoes and beams, an upright brake-lever, a plurality of transverse equalizing-bars between the beams, an intermediate equalizing-lever, an intermediate adj ustable connection between the bars, said lever and beams, the power end of the brakelever being substantially at the center of the truck.

4. The combination in a pivotal car-truck, of outside sets of brake-shoes for the wheels of the truck suspended from the frame thereof, beams connecting the shoes of each set, a plurality of transversely-disposed equalizingbars suspended from the frame which operatively connect with one of the brake-beams, an upright main braking-lever to which power is applied to operate the brakes fulcrumed on one of said equalizing-bars near the center thereof, and means connecting this leverwith the other equalizing-bar.

5. The combination in a pivotal car-truck, of sets of brake-shoes for the wheels outside the wheel-base and suspended'from the ends of the truck,brake-bean1s connecting the shoes of each set, a' plurality of transversely-extending equalizing-bars suspended from the truck-frame adjacent its center, means for connecting each end of said bars to one of the brake-beams, an upright main brake-lever ICG fulcrumed 011 the latter bar near the center thereof, an equalizing-lever fulcrumed at its upper end on the truck-frame, and means connecting its lower end with the other equalizing-bar and the equalizing-bar with the other brake-beam, and a connecting-rod from the equalizing-lever tothe main lever.

6. In a brake mechanism, the combination of a brake-beam, shoes carried thereby and adapted to press against the wheels outside the wheel-base, a pluralityof transversely-extending equalizing-bars, rods extending between the beams and said equalizing-bars adjacent their ends so as to provide room between them for a motor, a brake-lever to which power may be applied connected with one of said equalizing-bars, and means connecting the other equalizing-bar with said brake-lever.

'7. The combinationwith a car-truck frame, brake-beams adapted to be swung from the frame, brake-shoes thereon, a plurality of transversely-disposed and parallel equalizing-bars swung from supports disposed transversely of the frame, rods connecting each of said bars with each of said beams so as to provide clearance between them for a motor at each end of the truck, a braking-lever to which power is applied for operating the brakes piv oted at one end to one of theequalizing-bars, and a connecting-rod pivoted to said lever and its other end connected with the other equalizing-bar.

8. The combination of a car-truck frame, brake-shoes forthe wheels, beams connecting said shoes, a plurality of transversely-extending equalizing-bars suspended from a transverse member of said frame, a main brakelever fulcrumedon one of said bars to which power is applied to operate the shoes, means connecting the ends of the equalizing-bars with the respective brake-beams, said means being spaced apart to provide clearance for.

a motor, a pendent equalizing-lever also supported from the transverse member and connected with the other equalizing-oar, and connections between said equalizing and brake levers.

9. The combination of a car-truck, brakeshoes for the wheels, beams connecting said shoes and suspended from the frame, a plurality of floating equalizing-bars also suspended from the frame, a main brake-lever fulcrumed on one of the bars and to which lever power is applied to operate the shoes, means connecting the ends of the equalizingbars with the respective brake-beams, a pendent equalizing-lever and a rod connecting the equalizing-lever and thebrake-lever.

i 10. The combination of a car-truck frame having end pieces and .bolster-transoms extending across between the side pieces thereof, brake shoes suspended from the end pieces, brake-beams rigidly connecting theshoes of each set, a plurality of transverselyextending equalizing-bars, links near each end of said bars to independently suspend said bars from the respective transoms, rods connecting the ends of one of said bars with one of said beams, a main. brake-lever fulcrumed on said bar near its center, an equalizing-lever suspended from the other bolstertransom near the center thereof, and connected with the other equalizing-bar, and rods extending from the latter equalizing-bar to the other-brake-beam, and a link orrod connecting the equalizing-bar with the brake-lever.

11. The combination of a car-truck, outside brake-shoes for the wheels suspended from the truck, brake-beams to which the shoes are fixed, a plurality of transversely-extending equalizing-bars supported from the frame inside the wheel-base, rods connecting each of the bars with the beam nearest thereto and spaced apart to provide clearance for a motor, an upright main brake-lever pivotally secured to one of said equalizing-bars near the center thereof, the power end of said lever being adjacent to the center of the truck, an equalizing-lever pendent from the frame and connected with the other equalizing-bar, a connecting-rod from the equalizing-lever to the brake-lever. 12. The combination of a car truck, of brake-shoes pendent from the truck-frame, a plurality of transverse equalizing-bars suspended from the truck-frame and connected with one of the brake-sets, a brake-lever to which power is applied, one end of which is pivotally connected to one of said equalizingbars, an equalizing-lever depending from the frame and connected with the other equalizing-bar, and an adjustable connection between the latter lever and the brake-lever, for varying the pressure upon the two sets.

13. The combination of a truck frame, brake-beams, links supporting the beams beneath the frame, a plurality of swinging equalizing-bars supported from the frame and connected with one of the brake-beams, a braking-lever fulcrumed on one of said bars, another lever pivotally suspended from the frame and connected with the other equalizing-bar, and a connection attached to the brake-lever, and adj ustably connected with the pendent lever so as to vary the pressure as desired on the two sets of brakes.

. 14. The combination in a cartruck, of brake-beams swingingly supported from the ends of the frame, brake-beams fixedon said beams, bolster-transoms extending across the frame near the middle thereof, an equalizingbarsnspended from the transom and connected by rods with each one of the brakebeams, a main operating-lever fulcrumed on one of said bars, an equalizing-lever suspended at its upper end from one of the transoms, and connected to the other equalizingbar, and a rod operatively connecting the bralie and equalizing-lever, the connection of said rod with the one of said levers being adjustable along its length to vary the brakepressure on the shoes.

15. The combination of a car-truck frame, brake-shoes suspended from the frame of the truck, beams to which the shoes are secured, a plurality of equalizing-bars suspended from the frame, near the, transverse center of the truck, rods connecting one of the bars with one of the beams, a main operating brake-lever fulcrumed at its lower end upon and near the middle of said equalizing-bar, a pendent equalizing-lever suspended from the frame, near the transverse center thereof, and provided with a series of holes along its length, connections between said equalizing -lever and the other equalizing-bar, a connection between said latter bar and the other brakebeam, and a connecting-rod pivoted to the brake-lever near its lower end and adj ustably secured to the equalizing-lever at varying points along its length by a pin or bolt adapted to pass through the holes.

.16. The combination of acar=truck, out-side brake-shoes for the wheels suspended from the frame of the truck, brake-beams to which the shoes are fixed, a plurality of transverselye'xtending equalizing-bars supported from the frame inside the wheel-base, rods connecting each of said bars with each beam and spaced apart to provide clearance for a motor, an upright brake-lever pivotally secured to one of said bars near the latters center the power end of said lever being adjacent the center of the truck, an equalizing -lever pendent from the truck-frame, and secured to the other equalizing-bar, and a rod extending between said equalizing-lever and brake-lever with an adjustable connection with one of them whereby the pressure upon the brakeshoes may be differentiated.

17. The combination of a pivotal car-truck, a set of outside brake-shoes, beams connecting the shoes of each set, means to suspend the beams and shoes from the ends of the truck-frame, an equalizing-bar suspended from supports on the frame, rods connecting the bar near its ends with the brake-beam on that end of the truck, an upright main lever fulcrumed at its lower end on said bar near the center thereof, and having its other end to which power is applied located near the center of'the truck, a pendent equalizing-lever fulcrumed at its upper end to a support on the frame andin a line longitudinally with the brake-lever,another equalizing-bar swing ingly supported from the frame, rods connecting this bar with the other brake-beam, one rod near either end, means to connectthe lower end'of said equalizing-lever to the middle of the latter-equalizingbar, and a rod connecting the said two levers.

18." The combination of a car-truckframe, having side frames and end pieces, and centrally-disposed transoms extending between and secured to said pieces, brake beams and shoes suspended from said end pieces, an equalizing-bar, hangers and links to suspend the same at the ends from said transo ms, rods, one near either end of said bar to connect the brake-beam on that end of the truck therewith, a jaw-plate secured to said bar near the center thereof, a main brake-lever with its lower end fulcrumed in said plate and its upper end to which power is applied near the center of the truck, hangers or links secured to the other transom, another equalizing-bar suspended thereby, rods connecting this bar with the other brake-beams one near either end, a jaw-plate secured near the middle to the said equalizing-bar, and hangers secured to the transom, an equalizing-leverfulcrumed on said hangers, and connected with said jawplate, and a connecting-rod pinned at one end to the equalizing-lever and the other main brake-lever.

19. The combination of a car-truck frame, brake-shoes for the wheels, beams to which said shoes are secured, links to suspend said shoes and beams beneath the frame, an equalizing-bar also suspended by links, rods connecting the bar with one of the beams, and spaced apart to provide clearance between them' for a mot-or, a main brake-lever to one end of which power is applied fulcrumed on the said bar near the middle thereof, another equalizing-bar suspended from the frame of each end thereof to suspend the same from one of the bolster-transoms, rods connecting the ends of said bar with one of said beams to provide clearance between them for a motor, a main brake-lever fulcrumed to said bar near its center, and to the upper end of which another equalizing-bar is suspended from the other transom, rods connecting the ends of the bar with the other brake -beam to provide room between them for a motor, an equalizing-bar fulcrumed at its upper end near the center of the other transom, and hinged or pinned to the said second equalizing-bar near its lower end, and connecting means'as a rod between the equalizing-bar and the main lever, to simultaneously operate both sets of brakes.

21. The combination of a car-truck frame, having end pieces and bolster-transoms extending between and secured to the side pieces of the frame, brake-shoes and brake-beams suspended from the ends of the frame outside the wheels, equalizing-bars suspended from the transoms inside the wheels, rods connectin g the beams with the opposite bars, and separated to allow room between them for a motor at either end of the truck, an operating main brake-lever fulcrumed on one bar, an

equalizing-lever pivoted to the other bar and to the transom above, and a connecting-rod extending between these two levers to operate both beams and the brake-shoes simultaneously.

22. The combination of a car-truck frame, brake-beams swingingly supported from the ends of the frame, brake-shoes fixed on said beams, bolster-transoms extending across the frame near the middle thereof, an equalizingbar suspended from one of the transoms and rigidly connected as by rods with one of the brake-beams, a main operating brake-lever fulcrumed on the said bar, to the upper end of which the brake-power is applied, an equ alizing-lever suspended at its upper end from the floating equalizing-bar suspended from supports on the frame and from the center of which the said equalizing-bar is connected near its lower end, rods connecting the latter bar with the brake-beam on that end of the truck, and connecting means extending from the equalizing-lever, the connection with one of the levers being adjustable along its length in order to vary the pressure on the brakeshoes for either single-motor or double-motor trucks.

23. The combination of a car-truck frame, brake-shoes suspended from the frame of the truck, beams to which the shoes are secured, a floating equalizing'bar suspended from the framework near the longitudinal center of the same, rods connecting the bar with one brake-beam, a main operating brake-lever fulcrumed at its lower end near the middle of said bar, and to the upper end of which brake-power is applied, a pendent equalizinglever supported on the frame near the transverse center thereof and provided with an equalizing-bar also suspended from the frame of the truck, and to which the lower end of the equalizing-lever is pivoted, rods connecting this bar with the other brake-beam, and a connecting-rod secured to the main lever adjustably pivoted to the equalizing-lever by means of the series of holes.

24. In a truck-brake mechanism, the combination of brake-beams, one for each pair of wheels, shoes carried thereby, transverse equalizing-bars each connected at its ends to each beam, so as to provide room for a motor on each car-axle, the beam and bars all being adapted to be suspended from the car-truck frame, a lever connected with one bar, another lever connected with the other bar, and an adjustable connection between the two le vers whereby the truck mechanism may be applied to either a twomotor or a single-motor truck.

25. Thecombination of a car-truck, brakeshoes for the wheels, beams to which said shoes are fixed, an equalizing-bar also suspended by links beneath the frame, rods connecting the bar with one of the beams, and

spaced apart to provide clearance between 1 them for a motor, a main brake-lever to one end of which power is applied, fulcrumed on the said bar near the middle thereof, another equalizing-bar suspended from the frame of the truck, rods connecting this bar with the other brake-beam, and spaced apart to provide clearance between them for a motor, an equalizing-lever pivoted at one end near the middle of the latterbar and at its upper end to the framework of the truck, and a connecting-rod extending between this lever and the main brake-lever, the connection being adjustable along the length of one of them.

26. The combination of a car-truck frame having end pieces and bolster-transoms eX- tending across between the side pieces thereof, brake shoes suspended from the end pieces, brake-beams rigidly connecting the shoes of each set, a floating equalizing-bar, links near each end thereof to suspend the same from one end of the bolster-transoms, rods connecting the ends of said bar with one of said beams toprovide clearance between them for a motor, a main brake-lever fulcrumed to said bar near its center and to the upper end of which another equalizing-bar is suspended from the othertransom, rods connecting the ends of the bar with the other beam, to provide room between them for a motor, an equalizing-bar fulcrumed at its upper end, near the center of the other transom,- and hinged or pinned to the second equalizing-bar near its lower end, and a connecting-rod secured between the equalizing-lever and the main lever, the connection with one of them being adjustable so as to equalize or differentiate the pressure upon the brakes, and thus adapt the brake mechanism to either single or double motor trucks.

27. The combination of a car-truck frame, having end pieces and bolster-transoms extending between and secured to the side pieces of the frame, brake-shoes and brake-beams suspended from the end of the frame outside the wheels, equalizing-bars suspended from the transoms inside the wheels, rods connecting the beams with the opposite bars, and separated to allow room between them for a motor at either end of the truck, an operating main brake-lever fulcrumed onone bar, an equalizing-lever pivoted to the other bar, and the transom above, and a connecting-rod extending between these two levers and adj ustably connected therewith whereby the brake-pressures may be equalized or differentiated to suit the brake mechanism of either a two-motor or a single-motor truck.

Signed at the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, this 23d day of April, 1901.

WALTER S. ADAMS,

lVitnesses:

HENRY O. ESLING, VINCENT ANDERSON IIO