US999849A - Adjusting apparatus for brake-beams in street-car brake-rigging. - Google Patents

Description

L. E. OLIVER & A. OURETON. ADJUSTING APPARATUS FOR BRAKE BE MS IN STREET cAR BRAKE RIGGING. APPLICATION FILED FBB.6, 1911.

99 49 D Patented Aug. 8, 1911.

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APPLICATION FILED I'BB.6, 1911.

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LOUIS E. OLIVER, OF MAYWOOD, AND ALBERT ('JU IKLEl ION, OF CHICAGQ ILLINOIS.

ADJUSTING APPARATUS FOR BRAKE-BEAMS IN STREET-CAR BRAKE-RIGGING.

To d ll 'uihom it may concern:

Be it known that we, LOUIS E. OLIVER and ALBERT CURE'roN, citizens of the United States, and residents of the cities of'Maywood and Chicago, respectively, county of Cook and State of Illinois, have invented certain new and useful Improvements in Adjusting Apparatus for Brake-Beams in Street-Car Brake-Rigging, of which the following is a specification.

Our invention relates to brake rigging for street railway cars and more specifically to improvements in means for adjusting the brake beams so as to bring the brake shoes into proper position relative to the peripheries of the wheels cotiperating therewith.

The object of our .invention is the provision of means of the character mentioned. through the incorporation-of which in the brake rigging of a street car, the brake shoes thereof may be readily, expeditiously, and accurately adjusted in the manner above mentioned.

A further object is the production of adjusting means as mentioned which will be of durable and economical'construction and efiicient in operation.

Other objects will appear hereinafter. With these objects in view our invention consists in improvements in brake beam ad justing mechanism characterized as above mentioned and in certain details of construction and arrangements of parts all as will be hereinaftermore fully described and partia ularly pointed out in the appended claims- Our invention will be best understood by reference to the accompanying drawings forming a part of this specification and in which' I Figure 1 'is a bottom plan View of a conventional form of street railway car truck to which is applied adjusting mechanism embodying our invention, and Fig. 2 is a section taken on substantially line m-zv of Fig. 1, a

Referring now to the drawings we-have illustrated therein a conventional street car employing four wheeled trucks of the ordinary type, the brakerigging thereof being operated in the ordinary manner. As illustrated in the drawings 1 indicates the car body each end of which 'is mounted on the transversely extending body bolster 2. Arranged directly below the bolster 2 is the truck bolster or channel bar 3, the latter being con-.

Specification of Letters Patent.

Application filed February 6, 1911. Serial No. 606,785.

same in the position of adjustment. mechanism or operation whereby such ads portion of the body of car being also shown.

Patented Aug. 8, 1911.

movement relative to the latter by means'of the usual king bolt or plate 4. Arranged below the bolster 3 are the usual brake beams 5, the same being s'wingingly supnected with the bolster 2 for oscillatory ported for'horizontal' movement through the. movement'of links 5' the upper extremities I (if which are pivotally mounted in the respective endsof-the bolster 3, the extremities ot the brake beams 5. being connected with said links 5 in such a manner as to permit of oscillatory movement or adjustment of said beams. Carried by the'brake beams 5 at the extremities thereof are the brake shoes 6 arranged for cotiperation with the peripheries of the wheels 7, the arrangement being such that movement ofthe brake beams toward the respective pairs of wheels 7 effects the forcing of the brake shoes into engagement with said wheels andtlieconse quent retardation thereof. Further, the arrangement is such that by oscillatory adwas justment of the beams5' the positions of the .brake shoes 6 relative to the peripheries of the wheels? cooperating therewith may be adjusted so that, in order to efi'ect' the proper positioning of said brake shoes relative to said peripheries it isonly required to oscillate said brake 'Joeams and .to maintain the The justment of said brake beams isefiected and' whereby said brakebeams are held in positions of adjustment constitutesthe present invention, such mechanism oroperation being described hereinafter."

The brake shoes are normally held in released position, that is out of engagement with the wheels 7 by means of release springs 8, the upper extremity of said springs being fixed to the bolster "2', the lower extremities thereof engaging against the outer sides of the beams 5 as in 2.

The mechanism for effecting operation of the brake beams towardand from the peripheries of the wheels with which the same cooperate is of the conventional type, such mechanism comprising the relatively stationary brake lever 9 the upper extremity of clearly shown which is fulcrumed at 10 to a stationary bracket 11 rigidly secured to and projecting from the bolster 2. The leve'r 9 interme-i diate its extremities is pivotally connected through the medium of a :pin or bolt 12 to j an arm 12 which projects from and is rig v V eeaaae 2 and 3 is the floating brake lever 13 the upper extremity of which is connected in the usual manner with the operating brake l rod l4. Said lever 13 intermediate its extremities is pivotally connected through the medium of a pin. or bolt 15 with an arm 15 which projects from and is rigidly secured to the other of the brake beams 5. The lower extremities of the levers 9 and 13 are connected by the coupling bar 16 so that upon proper pulling or drawing of the brake rod 14: the said levers 9 and 13 will be swung to eifect the forcing of the shoes 6 cooperating therewith into engagement with the car wheels. The operation of the levers 9 and 13 and the parts connected therewith upon the above mentioned drawing or pulling of the brake rod 14 is old and well known hence will need no further descri tion.

The mechanism for effecting oscillatory adjustment of the brake beams 5 in' order to effect the adjustment of the shoes 6 relative to the peripheries of the wheels 7 as above mentioned will now be described.

This mechanism is very simple consisting in the provision of connecting rods or bars 17 which are connected at their lower extremities to the extended outer extremities of the pins 12 and 15, there being two of said rods 17 connected with each of said pins, that is one 'at each side of each of the levers 9 and 13. The upper extremities of the rods 17 are pivotally connected with ears 17 which are rigidly secured to and projecting from respective sides of the bol ster 2. Interposed in each of the rods 17 is a turn buckle 18 through the medium of which said rod may evidently be longitudinally adjusted, the adjacent ends of the rod at the point of interposition of the turn buckle therein being oppositely screw threaded. "With this arrangement then it is clear that oscillatory adjustment of the brake beams 5 may be readily effected by simply rotating the turn buckles 18 since said turn buckles determine the lengths of said rods 17 In order to facilitate rotation of said turn buckles in effecting this adjustment the same are preferably provided with slots 19 into which the end of a tool may be inserted as will be readily understood. Threaded upon each of the-rods 17 adja cent the opposite extremities of the turn buckle interposed therein are look nuts-20 which evidently serve as a means of locking said rods in their positions of longitudinal adjustment.

With the provision then of adjusting mechanism as above set forth in the brake rigging of a railway car the ready and expeditious adjustment of the brake beams in order to effect the proper position of the brake shoes relative to the wheel peripheries engaged thereby is secured; the construction herein described being also adapted to maintain the brake beams and hence the brake shoes in the are adjusted.

The adjusting mechanism as set forth is durable and economical, the same is of great efiiciency in operation and is not suspositions to which they 'ceptible to readily becoming inoperative.

The provision of such mechanism in the brake rigging of a railway car will render the same-better fitted to serve the purpose for which it is designed since the motorman or driver of the car will be adapted to better control the car when the shoes properly engage the peripheries of the wheels cooperating therewith. This being so accidents which frequently occur by reason of the absence of the proper adjustment of the brake shoes relative to the peripheries of the wheels will be eliminated; the company operating the cars being also benefited since without proper adjustment of the braking 'mechanism the car cannot be operated to its best advantage. 1

While we have illustrated and described the preferred construction for carrying our invention into effect this is capable of variations or modifications without departing from the spirit of the invention. We, there-- fore, do not wish to be limited to the exact details of construction as set forth but de sire to avail ourselves of such variations and modificatuns as come within the scope of the appended claims.

Having described our invention what we claim as new and desire to secure by Letters Patent is:

1. The combination with a brake rigging for railway cars comprising a brake beam carrying brake shoes, said beam being mounted for movement toward and from the car wheel peripheries engaged by said brake shoes. said brake beam being mounted for oscillatory movement for efiecting the adjustment of the positions of said brake shoes relative to the peripheries of said wheels, of a bar having one end eccentrically connected with said brake beam and having its opposite end held stationary whereby adjustment of the length of said bar effects oscillatory adjustment. of said brake beam; and a turn buckle interposed in said bar, substantially as described.

2. The combination with a brake rigging for railway cars comprising a brake beam having brake shoes, said beam being mounted for adjustment toward and from the peripheries of the car wheels adapted to be engaged by said brake shoes, said brake beams being mounted for oscillatory movement for effecting adjustment of the positions of said brake shoes relative to said wheel peripheries, of a bar-having its lower end eccentrically connected with said brake beam and having its upper end held stationary whereby adjustment of the length of said bar elfects oscillatory adjustment of said. brake beam; a turn buckle interposed in said bar for effecting longitudinal adjustment thereof; and means on said bar for maintaining the same in positions of longitudinal adjustment, substantially as described.

3. The combination with a brake rigging for railway cars comprising a brake beam having brake shoes, said beam being mounted for adjustment toward and from the peripheries of the car wheels adapted to be engaged by said brake shoes, said brake beams being mounted for oscillatory movement for efiecting adjustment of the positions of said brake shoes relative to said wheel peripheries, of a bar having its lower end eccentrically connected with said brake beam and having its upper end held stationary whereby adjustment of the length described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

LOUIS E. oLIvER. ALBERT OURETON.

\Vitnesses JOSHUA R. H. Por'rs, W. C. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

* Washington, D. G.

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