US1851644A - Brake mounting - Google Patents

Description

R. B. OSBOURQNE 1,851,644

BRAKE MOUNTING March 29, 1932.

Filed June 29, 1928 2 Sheets-Sheet l INVENTOR WHMWJ.

Filed June 29, 1928 2 Sh eetsSheet 2,

UNITE RICHARD 1B. OSBOUBNE, PITTSBURGH,

TION OE. PENNSYLVANIA. w

parent" rrnmtsynvnnm; Assrsnon. r; nurtures; MINE. & MILL. SUPPLY coiurnnx, on PITTSBURGH,..PENNSYLVANIA, A1G0BBQRA+ BRAKE LMOUNTINEGI Application, filed-June; 29, 1928 sen-nine. 289,186;

This, invention relates broadly to brake mountings and. more particularly to such mountings adapted for vertically movable brake shoes.' It relates still more particularly. to a brake mounting, especially adaptwhich has usually been in thenature. of' a vertically extending; coil spring cooperat ing; with the bottom of the brakeishoe or with aportionof the bralte rigging and-with the car forurging. the shoe, upwardly, suitable,

brake. actuating mechanismbeing provided for moving the shoe downwardly against the action of the. spring into contact with, the wheels. Due. to the proximityofthebottom of the usual type of mine'car to the mine floor or tracltbed,,anddue to the small clearance between the body of the. car. and the track, the use. of a coil spring situatedbelow the brake rigging has, been attended-with certain disadvantages. Thespringhas-necessar-ily. extended down very close to the track or mine floor and due to this fact: has often been the cause. of damage to thecar or to the brake rigging by reasoniof its comingi-n contact with obstacles or loose material. piled on the mine floor. V i

A further disadvantage of the use ofla coil spring in a brake mounting. of tliisytyp e is that the only substantially effective force ex; erted upon the shoe by such a spring is a substantially vertical direction and. consequently the shoe has in many instances been free to vibrate or be displaced" laterally;- that is, toward and away from-the car. 7 Such displacement interferes with the action of the brake and tends topermit the brake shoe to ccntact with any obstacles which may be close to the car. whereby damage may be done to the brake rigging. Furthermore a: brake shoe mounting in which a coil spring is used necessitates a more or less complicated rigging. having variousparts whichmay easily lose adjustment or become bent or broken.

. brake. shoeor shoes.

If provi de. a brake.n10untingadaptedto.obs v ate thev defects above mentioned and, to y eldin ly support. a; brake shoe or brake shoes so as to. provide ample, clearance .b.etween thebottom'ofjthebrake rigging and.

. the track and'also to. prevent.lateraldisplace mentoftheshoe orshoesl, I'preferahly provide a brake rigging, cooperating, with leaf. spring; supporting means; which means? are relatively thin andconsumelittle space and winch. are, soconnected. to the car. as to. sub: stantially eliminate. lateral movement. of the din; 'the accompanying: drawings. II have: shown certain present preferred embodiments offthe-invention wherein. f i i Figure Ii's aside. yiew ofjacar, with parts. broken. away having inventiom apfoliedl thereto; i 1 Figure. 2 is. a. bottom. plan view of the car. shown intEigu re 1;. i j Eigure 3L ishan. end View, alsoiwith, parts.

ishow-ihgythe brake actuatingmechanism;

. 1 Figure, tlisaside view: ofa car showinga further. embodiment. ofmy invention ;v t

Figure 5 is a bottomplan. view. of the-car: shown in Figure 4'; and Y Figure: 6 is. an end view of the car shown in Figure l, showing; the brake actuating mechanism.. i Referringmoreparticularly totheembodiment ofFigures .1, to 3,. inclusive, reference numeral 2. designates generally thebodyof amine car having-.journalled therein in. the usualmanner flanged wheels 3. Cooperating with both the. frontand the. rear wheel on eachv side ofthe; car is. a brakeshoe "4: having oppositely curved braking surfaces. 5. The brake shoe4fis adapted for movement into and. out of operative. relation with thewwheels in asubstantially vertical direction. 1 i

Suitably journalled. at each. side '1 of the frame 2. is a. longitudinally extending shaft 6, having. one. end. bent upwardly at. one end of the car, as shown at 'Z, and. provided. with a porti-on 8 for the attachment of suitable brake actuating. mechan-isnr presently to, be described: I 1 Rigidly connected to the shaft. dis epair of levers 9 each having a hole in its opposite end wherein is journalled a short shaft 10. The shaft 10 lies close to and substantially directly above the brake shoe 4. The brake shoe is provided with suitable lugs 11 having holesrotatably receiving theshaft 10. Upon rotation of the shaft 6 the levers 9 will be raisedor lowered depending upon the direction of such rotation, and the shaft 10 and the brake shoe 4 will be correspondingly raised and'lowered.

' springs is substantially vertical so that ,moveport the'brake shoe and urge it upwardly.

The direction of the resilient force of the ment'of the brake shoes is in an up and down I direction. reason of the thinness of the springs, ample clearance is provided between the bottom surfaces thereofand the track or mine floor. Furthermore, the springs being connected to a fixed point on the body or frame .of the car, their ends which are connected tothe brake shoe are incapable of transverse or lateral movement and conse-' quently the brake shoe is held in a substantially rigid position with respect to the horizontal. The brake shoe is thus resiliently mou-ntedat a safe distance above the track or floor and. is held against lateral displacement'whereby damage might be done to the" car or brake rigging. It is to beunderstood,

of course, that the above description applies equally well to both sides of the car, and for that reason I have set it forth in detail only,

once.

' Fastened to the end of the car is a U-shaped strap 13 to which is journalled at 14 a brake lever. 15'. This brakelevercooperates with a rack16 whereby it may be held in any adjusted position, as is usual. H

Connected to'the portion 8 of each shaft 6 and to the-brake lever 15 is a link17. The link 17 on one side of the car is pivoted to r the brake lever above the pivot 14 and that on the other side of the car is pivoted to the brake lever below the pivot 14.

Movement of the brake lever to the right, viewing Figure 3, causes both of the shafts 6 to be rotated inwardly to actuate the brake shoes downwardly against the action of the springs 12 and'into braking relationship with the wheels. Upon release of the brake lever 15 the springs 12 causethe brake shoes to rise out of braking engagement with the wheels and consequently return the brake actuating mechanism to its original position.

Referring now more particularly to Fig:

extremities 21 towhich are dead ended the outer ends of brake bands 22. The inner ends of the brake bands 22 are similarly connected to pins 23 connect-ed to equalizing levers 24, one on each sideof the car. Connected to each of the equalizing'levers 24 substantially at its center is an upright member 25 having a generally horizontally extending lower portion-26.

Connected beneath the car at each side is a leaf spring 27 which extends out to a point intermediateethe wheels. Each of the leaf springs 27 is provided at its outer portion with a circular hole 28 through which a pin 29 formed as apart of the upright member 25 is adapted to pass.

The hole 28 is substantially larger in di- 'ameter than the pin 29 so that there is a'loose pin and slot connection between the leaf spring 27 and the upright member 25. The leaf spring serves as a support for the upright member and consequently for the equalizing lever 24 and to a certain extent the brake bands 22. a

At its upper end the upright member 25 extends around a crank portion 30 ofa shaft. 31 running generally longitudinallyof the car. Each shaft 31 has a downturned portion 32 at its outer extremity to which is connected a link 33. Pivoted on the end of the car at 34 and connecting the links 33 is an operating lever 35 cooperating with a rack 36 whereby it may be locked in adjusted positions.

Upon operation of the lever 35 the respective shafts 31 are rotated, thereby rotating therespectivecrank portions 30 thereof and forcing downward, the members 25 and consequently the equalizing levers 2.4 andthe brake bands 22 against the resilient action of'thesprings27.

I thus Drovide a brake mounting compris ing a brake shoe and transversely extei'iding leaf spring means for supporting the shoe.

The leaf spring means,- as above described,

prevents vlateral displacementxof'the brake shoe. Ampleclearance is provided between of the brake rigging and the track the bottom orfloor. V a

While I have shown and described certain present preferred embodiments of the'invention, it is to be distinctly understood th the same is not limited thereto, but may be otherwise embodied within the following claims.

Iclaim: V 1. In a brake mounting a brake shoe and transversely extending leaf spring means forv vertically supporting the shoe.

scope of the 2. In a. brake mounting, a brake shoe and common transversely extending means for resiliently vertically supporting the shoe and preventing lateral displacement thereof.

3. In a brake mounting, a brake shoe and a plurality of horizontally and longitudinally spaced leaf spring supporting means for the shoe, such means cooperating to prevent lateral displacement of the shoe.

4. In a brake mounting, a brake shoe and leaf spring supporting means lying adjacent the under side of theshoe for resiliently holding it against lateral displacement.

5. In a brake mounting, a vertically movable brake shoe, leaf spring supporting means lying adjacent the under side of the shoe urging it upward and means for moving the shoe downward.

6. In combination, a vehicle and a brake mounting comprising a brake shoe and leaf spring supporting means for supporting the same vertically and cooperating with the under side of the vehicle.

7. In combination, a vehicle and a brake 16. In combination, a vehicle having a plurality of wheels on one side, braking means for the respective wheels, an equalizing 1ever connecting the braking means, leafspring supporting means and a pivotal connection between the supporting means and the braking means.

In testimony whereof I have hereunto set my hand.

' RICHARD B. OSBOURNE.

mounting comprising a brake shoe and a plurality of horizontally spaced leaf spring supporting means therefor cooperating with the under side of the vehicle and extending transversely thereof.

' 8. In combination, a vehicle and a brake mounting comprising a vertically movable brake shoe and leaf spring supporting means therefor cooperating with the under side of the vehicle and urging the shoe upward and means for moving the shoe downward.

9. In combination, a vehicle and a brake mounting comprising a brake shoe and a plurality of horizontally spaced leaf spring supporting means therefor cooperating with the under sides of the vehicle and shoe, respectively, to urge the shoe upward, and means for moving the shoe downward.

10. In combination, a vehicle and a brake mounting comprising a brake shoe and leaf spring supporting means for supporting the same vertically and extending under the vehicle and connected to a fixed point, whereby the shoe is prevented from being laterally displaced.

11. In combination, a vehicle having wheels, braking means for the wheels, and flat resilient means extending generally parallel to the ground and transversely of the vehicle for supporting the braking means.

. 12. In a brake mounting, a plurality of separate braking members, connecting means therefor, and leaf spring means cooperating with the connecting means for supporting the braking members.

13. In combination, a vehicle having a plurality of wheels on one side, separate braking members for the respective wheels, a lever oining the brakmg members, and leaf spring supporting means therefor.

14. In combination, a vehicle having a plurality of wheels on one side, braking means for the respective wheels, a lever joining the

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