US347039A

US347039A - Car-brake

Info

Publication number: US347039A
Authority: US
Publication date: 1886-08-10
Anticipated expiration: 1903-08-10

Description

(No Model.)

R. R. 111GB;

3 Sheets-Sheet 1.

GAR BRAKE.

, .Q A 2m Patented Aug. 1 0, 1886.

venan XM w@ N. PETERSA Phma-Lixhogwpher. wamlngwn. DA c.

`(No Model.)

. 3 sheetssheet 2.

R. R. HICE.

GAR BRAKE.

Nol 347,039. Patented' AugflO, 1886.

' N4 vains nwmumasnv '.3 sheetssheen -3.'

(No Mode1.)

R. 3.x H103.

GAR BRAKE.

Patented Aug. 10, 1886. F|G.|v

FIG.VII

t y UNITED n STATES PATENT Ormea..

RICHARD R. HICE, OF BEAVER, PENNSYLVANIA, ASSIGNOR TO THE ROTE AUTOMATIC BRAKE COMPANY, OF MANSFIELD, OHIO.

CAR-BRAKE.

SPECPICATON forming part of Letters Patent No. 347.039. dated August 10- 1886- Appncation 'filed Apr-n 21; ieee.

To @ZZ whom it may concern:

Be it known that LRiounnioY R. HIcE, of Beaver, county of Beaver, and State of Pennsylvania, have invented a new and useful Improvement in Automatic Car-Brakes,of which the following is a full, clear, and eXact description, reference being' had to the accompany' car or trainis traveling slowly the inward and outward movements of the draw-bar shall have no effect upon the brakes, yvhile when the car attains an ordinary degree of speed the said movements of the draw-bar. shall serve to automatically apply the brakes.

The object of this invention is to produce an automatic car-brake in which the connections interposed between the draw-bar and the governor shall be simple and durable in construction, and at the same time direct and positive in action; also, to produce an automatic car-brake, the governor of whichshall be very simple and positive in its action and readily applied to or disconnected from an ordinary truck-axle. Furthermore, to produce 'an vautomatic car-brake in which the power developed by the effective movement of the draw-bar shall be quickly applied to the brakeshoes without loss of either motion or force, and invwhich the recovery of the various connections between the draw-bar and the brakebeam consequent upon a release of the brakes shall be prompt and free from any slackening of the brake-chains.

To the above purposes the invention consists, first, in the combination, with an in- Y' Serial No. 200,322. (No model.)

connections for rendering the movements of Athe draw-bar effective or non-effective, as hereinafter described and claimed.

The invention further consists in the ccmbination, with a peculiarly-constructed stoplever arranged to engage and disengage an arm or lever upon the movable draw-bar, of

a pendent pivoted lever engaged at its lower erative, as hereinafter described and claimed.

The invention further consists in the combination, with the stop-lever and the pendent lever before mentioned, of a second pendent lever weighted at its upper end and engaging at its lower end a centrifugal governor upon the truck-axle,and a pivoted dog in constant engagement with said second lever, which, when moved by the latter, shall hold the stoplever out of engagement with the draw-bar arm and also release said stop-lever t'o allow the same to assume its operative position relative to the draw-bar arm.

The invention still further consists in the peculiar and novel construction and arrangement of the centrifugal governor, and in the peculiar and novel construction and arrangement of the brake-lever and its connections to the draw-bar lever, all as hereinafter described and claimed.

In order that the invention may be fully understood,it will be now described with reference to the accompanying drawings, in which-- Figure I is an upper side plan view of a carframe with the improvements applied. Fig. II is an under side plan view of the same. Fig. III is avertical longitudinal section of the car-frame and its truck with the improvements applied thereto, the section being taken on the line 3 3 of Fig. I. Fig.'IV is a vertical transverse section of the same on the line 4 4 of Fig. I. Fig.V is a detached view of the governor in operative position upon the truckaxle. Fig. VI is a detached view of the dog, and Fig. VII a similar View of the stop-lever.

In the said drawings, Adesignates the drawbar or buffer, which is arranged to move in- ICO TOS

wardly and outwardly in asuitable casing or housing upon the car-frame, and preferably against the action of a buffer-spring, a, in the usual manner.

B designates an arm or lever,which is pivoted at b upon the under side of the draw-bar A, and which extends transversely of the earbody, as shown. The outer end of this lever is forked or bifureated at b to embrace an elongated U-shaped hanger or guide, C, which is suitably secured beneath the body-frame of the car, as shown. This guide or hanger extends longitudinally of the car-body, and the end b oflevcr l, working on said hanger,is engaged at times by a stop-lever, to be hereinafter described. The inner end of lever lextcnds beyond the draw-bar head and is U- shaped, as shown at bf. Vithin or between the arms of the inner end of lever B lies the inner end of a lever, E, the outer end of which is connected by a chain, F, with the brakelever, hereinafter described. This lever E is pivoted at c upon a bracket, D, which is secured to the front end of the body-frame and near to the draw-bar. flivoted at l(Lupen one ofthe vouter longitrulinal beams of the bodyframe, is a stop-lever, G, which extends longitudinally of the ear-body, and upon the under side of the outer end of which is formed a downwardly-extendin g stud or stop, (j, which, when the outer end of said lever is depressed, engages the outer end of lever l5. Thus it will be seen that when the outer end of the arm or lever l1 is engaged by the stop-lever G the inward movement of the draw-barA will cause the inner end of lever B to act powerfully upon the contiguous end of lever E, and that the latter acting pivotally will draw powerfully outwardly at its outer end on the brakechain F and apply the brakes. On the other hand, when the outer end of lever B is notengagcd by the stop-lever, any inward or outward movement of the draw-bar A will canse said lever to move freely on its pivot 7), the tension of the brake mechanism rendering lever E sufficiently rigid to resist any movement and serve at its inner end as the fnlerum for the free movement of lever I).

The inner end of'the stop-lever G is T- shaped,haviugtwooppositelyexteudingarms, y', and at the outer extremity of each of these arms is formed or secured an inwardly-extending pin, ff, the T-shaped end of thi-s stop-lever extending inwardly beyond the pivotal point g of said lever.

ll designates an arm or bracket, which is secured at one end to one of the transverse timbers ofthe truck, and which extends horizontally outward `from said point of attachment. The outer end of this arm H is enlarged, as shown at 7l, and this enlarged portion is formed with a downward extension, 71,', an upward L-shaped extension, 712, and an outward horizontal extension, 7N.

Upon the downward extension his pivoted, at fi, a lever, I, the upper end of which extends between the pins gi of the stop-lever G.

The lower end of this lever I extends downwardly toward and sufficiently near to the truck-axle to be engaged at times by the governor, as hereinafter described.

To the forward extension, 7L, of the arm H is pivoted, at j, a lever, J, the upper end of which is weighted, as shown atj, and the lower end of which depends toward and sufficiently near to the truck-axle to be engaged at times by the governor thereon. Upon the upward extension, 7L, is pivotcd, at 7.', a dog, IK, which is of substantially the 'form shown in Fig. (5. This dog is formed with an extension, 7.1', projecting in alignment with the greatest length of the body portion of the dog, and also two extensions, 7617;,projeeting transversely to the length of the bodyportion of said dog and just beyond its pivotal poi ut. At each extremity of the arms 7.1: is formed or secured a pin, 7a', and by referring to Fig. 3 it will be seen that the upper weighted end of the lever .l extends between the said pins 7.4. Immediately beneath the extension l." the dog K is formed with a notch, 7.?, and from this notch or shoulder the lower edge of the dog is curved, as shown at 7;".

Upon the contiguous axle of the truck is mounted the centrifugally-aeting governor L, which consists of a U-Shaped casting having two arms, Z41 7, the arm l being heavier than the arm 7. This governor is pivoted at 7l upon a split ring or collar, Z, each cud of which is formed with a lug, 7, through which the pivot Z2 passes, said pivot serving not only as the means for adjusting the governor L, but also as the means for drawing the end of the ring or collar l snugly together, and thus securely attaching said ring or collar to the axle. This governor is so placed upon the tru ck-axle that its lighter end 7 lies below the lower end of the lever l, while its heavier end lies below the weighted lever J, and it will be readily secu that when the ear is moving slowly-for instance, just after the train has started-the lighter end 7 of the governor will, as the axle revolves and brings the governor uppermost, strike the lower end of lever I and throw the upper eud of said lever in one or the opposite direction, according as the train is going ahead or backing, and thus raise the outer end of stop^ lever G- out of engagement with the lever B, so that the inward or outward movement of the draw-bar will not affect the brakes. At this moment the dog K will drop by gravity, the lower pin, g", of stop-lever G being caught in the notch 7S of the dog, and thus the stop-lever G will be locked or held with its outer end raised. Now, when the car or train has attained its usual speed, the heavier end of the governor L will be thrown outward by the rapid revolution of the axle and will strike the lower end of lever J, throwing its upper end forcibly against one or the other pin, 7H, aeeording to the direction of movement of the car or train, and tripping the dog ont of engagement with the stopfj" of the lever G and allowing the outer end of said lever to fall by gravity, so that its stud g3 shall engage the arm or lever B upon the .next inward movement of the draw-bar A, and consequently causing such movement to apply the brakes. The brakes being applied andthe speed of the car or train being reduced, the heavier end of the governor will fall when the governor is brought abovethe axle, and its lighter end will tilt the lever I, and consequently release the brakes.

In Fig. 3 is shown a form of brake-lever which is peculiarly adapted for use in connection with the member E of the pair of -interlocking levers, above described, inasmuch as when the lever B causes the brakes to be released this brake-lever will instantly takel up the slack'. in the brake-chain. M designates the brake-lever, the lower part of which is connected by a rod, F', with a companion lever, M', of the usual or any preferred form. The upper part of this lever M has its upper extremity bent over angularly, as shown atm, and is preferably bent in curved form,while at its lower end said lever is preferably weighted, as shown at m. A pulley, N, is journaled in a strap, n, which embraces the lever M, and to which is connected the brake-chain F, before referred to as connected at its opposite end tothe free end of lever E. Thus when the lever. B is engaged by the stop-leverG and the draw-bar moves inwardly the strain upon chain F will cause the pulley N to impart anl initial pressure of the brake-shoes uponfthe truck-wheels and immediately thereafter to run upward upon the lever M and apply a powerful pressure upon the brake.- shoes. As soon as lever-B is released, as before described, this pulley N will run down upon lever M, and in so doing as the said lever moves outward from the wheels instantly take up the slack of the brake-chain F.

Thus it willbe seen that the entire brake mechanism is of thesimplest construction and of the utmost durability, and that it quicklyv responds to the varying requirements incident to actual use.

Having now described the invention, what is claimed as new and desired to be secured by Letters Patent isl. In an automatic car-brake of the kind above specified, a pair of interlocking levers connected pivotally with a longitudinally- 'movable draw-bar, one of said levers being connected directly to a brake-lever and the other lever being rendered fixed or freely movable by suitable connections from the truckaxle, substantially as described.

2. In an automatic car-brake'of the kind above specified, an arm or lever pivotally connected to the drawbar, and a stop-lever engaging and disengaging said arm or lever to render the same fixed or freely movable, in combination with a pivoted pendent lever in constant engagement with the draw-bar arm or lever, and a centrifugally-acting governor arranged to trip said pendent lever and thereinto engagement with the dog, and a centrifugal governor engaging said lever in consequence of varying speeds of rotation of the axle, substantially as specified.

4. The combination, with a pair of pivoted levers interlocking at their contiguous ends,

and a longitudinally-movable draw-bar operating upon said levers, of a stop-lever arranged to-resist the inward thrust of the drawbar, anda brake-lever having a longitudinallymoving pulley connected by the brake-chain to the opposite member of the said interlockin'g levers, as set forth.

5. The combination, with the longitudinallymovable draw-bar, of the lever B, piv oted upon said draw-'bar and having its inner end bifurcated, and the lever E, pivoted upon the carframe, said'levers being respectively in engagement with a stop-lever and connected to a brake-lever, whereby the inward movement of the draw-bar shall cause the lever B to become xed at its outer end and apply the brakes through the medium of lever E, substantially as described.

6. The combination, with thepivoted stoplever G, having the stud g3 and .pins g2, of the pivoted lever H, extending between said pins and operating to raise the outer end of the stop-lever by a movement of its upper end and in either direction, substantially as described.

7. rlhe combination, with the pivoted stoplever G, having the pins g2, and the lever I, extending at its upper end between said pins, of the dog K, pivoted upon the truck-frame and having the arms k2 k3, with pins k4 and notch k7, and the weighted lever J, extending at its upper end between the pins la, said levers I and J being pivoted on the truck-frame and in contact'at their lower ends with the arms of a governor on the axle, as setforth. 8. rIhe governor having the pivoted U- shaped piece with its operative arms of relatively greater and less weight, in combination with levers I and J, acted upon by said arms, substantially as described.

ICO

IIO

- 9. The bracket H, having extensions h', h2, I

Witnesses:

WINFIELD S. MOORE, J oHN M. SCOTT.