US712011A - Car-brake. - Google Patents

Description

Patenten oct; 28,. |902.

' No. 712,0",A

J. s. smania* cAn BRAKE. l

\Applicston led Nov. 22, 1901.)

(no Model.)

sie et UNITED STATES PATENT OEEICE.

JOSHUA S'. SHEETS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN E. REYBURN, OF PHILADELPHIA, PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION :forming part of Letters Patent No. 712,011, dated October 28, 1902. Application filed November 22, 1901l l lSerial No. 83,281. (No model.)A

To a/ZZ whom it may concern:

Beit known that I, JOSHUA S. SHEETS, aoitizen 0E the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Oar-Brakes, of which the following is a specification.

The objects of my invention are, first, to secure the parts to existing trucks without drilling holes in the parts of the truck where the attachments are made or in any manner damaging or weakening those parts; second, to provide more tension members connecting the brake-heads 4to thereby in sure a direct pressure of the brake-shoes to the wheels; third, to provide a connectionracross the truck from one set of toggles tothe other to insure their uniform action; fourth, to provide a means to positively release the brake-shoes from the wheels when the power is o, these improvements being made on the brake for which application was made December 17,1900, Serial No. 40,109; allowed March 14, 1901; forfeited, and -renewed October 16, 1901, Serial No. 78,867; allowed October 23, 1901. My invention is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of the truck and attached brake. Fig. 2 is a central section of the truck, showing the brake from the inside and the new tension members. Fig. 3 is an elevation of the hangers supporting the shaft which now connects the toggles and their means of support on the central cross-ties. Fig. 4 is a plan of Fig. 3. Fig. 5 is an elevation ofthe end hangers. Fig. 6 is a View of the end hangers from the inside of the truck.

' Fig. 7 is a top view of theend.

The form of truck illustrated is extensively used for street-cars, and the toggle-brake, as heretofore mentioned, is the subject of a previous application. As previously,brake heads and shoes are applied to the front and back of each wheel. Wheels 1 have brake-heads 2 and shoes 3 applied in front, while wheels 4 have heads 5 and shoes 6 applied in front, and each pair of heads 2 5 areconneeted by bars 7, passing outside of the wheels, while heads 8, with shoes 9, and heads 10, with shoes 1l, are applied to the back of the wheels 1 4 and connected by bars 12, also passing outside of the wheels, the brake heads and shoes being worked in unison by the central toggle mechanism between the Wheels. heretofore employed to hang brake-heads 2 10 from the cross-ties 13 14 was objectionable because of the time and expense involved in drilling the cross-ties for the bolts to secure' the hangers, and also the weakening of the bars by the holes was very objectionable. To overcome these objections, the hangers (seen in Figs. 5, 6, 7) have been constructed in manner for their secure application to the crossties without boring any holes in them, and theyalso have the advantage of quick application when brakes are forwarded to a distance to be applied to trucks already in use. The hanger 15 has the usual eye 16 for suspension-bolt 17. Supported on neck 18, passing to lug 19, which abuts the inner side of bars 13.14, a hole is formed in lug 19, wherein is placed an eyebolt 20, having its eye below the lower edge of bars 13 14 and receiving a hooked rod 21, having a half-turn bend 22 at the outer end to grasp the flange 23 of bars 13 14 and its inner end 24 bent down to insure its remaining in the eye of bolt 20, which is screw-threaded at its upper end and provided with a nut 25. A lug 26 passes down youtside of part 27 of bars 13 14, so that when nut 25 isscrewed to place the hanger parts, as described, are firmly secured with little work and expense and without damage to the member they are secured to.

It will be evident that modifications will have to be made to suit otherforms of trucks with other forms of cross-ties; but such modifications can be effected and still keep within the spirit of my invention. Heretofore the respective brake-heads, which were coupled together, were only coupled upon the outside of the Wheels. This has been found in some instances to limit the thickness of bars 7 12 and cause friction by their rubbing the axle-boxes or wheels, necessitating the use of 'latbars instead of the T-bars that were originally designed to be used. To overcome this objection, the heads 2 5 have now been coupled by a rod 28, secured in lugs 29 30, made integral with the heads, the rod being preferably screw-threaded at its ends and provided with nuts at each side of the lugs for The means more perfect adjustment as to length. Heads S 10 are similarly provided with lugs 31 32 and rod 33 with nuts similar to rod 2S. While circular section-rods are shown, it will be evident thatrectangularsection-bars might be used instead of those shown and secured similar to bars 7 12. Rods 2S 33 -are inside of the wheels, as seen in Fig. 2, so that now the heads 2 5 8 10 are tied both outside and inside of the wheels. At the center of Figs. 1, 2 and in Figs. 3, 4 will be seen the present devices for operating the toggle and the method of securing the same. A shaft 34, preferably of rectangular section for strength, has journals 35, restingin hangers 36, having legs 37 38, which pass upward and outside of transorns 39 40 of frame 41 and have feet 42 43, resting under the transoms. Passing over and across transoms 39 40 are plates 45, which lie thereon, their over-hanging ends having grooves 46 47 cut across in their under surface. Clips 49 50 pass under feet 42 43 and have dowel-pins 4S, entering holes formed therefor in the under side of the feet. The pins help to steady the positions of the clips. The clips are turned upward at their outer ends and enter grooves 46 47, the grooves being wide enough to permit the clip ends to move about to nd proper seating, and when the parts are arranged as described bolts 51 52 are passed through plates 45 and clips 49 50, securing feet 42 43 and hangers 36 to the transoms without any holes being made in any of the original parts of the truck or its car. If the nuts of bolts 51 52 should by any means become slack, the slots 46 47 are intended to prevent their being jarred sidewise, where they could allow the hangers to drop. Shaft 34 has caps 53 over its journals 35, secured by bolts 54 55, and bolts 55 also secure brackets 56, pending from hangers 36. A lug 57 is secured to shaft 34. A bolt 58 is passed freely through lug 57 and bracket 56 and thereon is placed a spring 59, which is compressed by lug 57 when the brake is applied, and its recoil releases the shoes from the wheels when the brake is released. Arms 60 are formed on or secured to the ends of shaft 34, and therein is a jaw 6l, in which is attached rod 62, operating the toggle mechanism as arranged in the original application, as recited on page 1. Brake-lever 63 is notched onto shaft 34, as best seen in Fig. 2, and secured by a yoke-bolt 64.

1. In a brake, a truck having cross-ties, brake-hangers therefor grasping parts of said cross-ties,ahooked rod embracing a part ofthe cross-tie, and a vertical eyebolt seated in the hanger and embracing the hooked rod.

2. In a car-brake, a truck-frame and transoms therefor, bars resting on the transoms, hangers having feet below the transoms, clips passing under the han ger-feet then upwardly turned and touching the bars aforesaid, and means to force the clips to the hanger-feet and the bar, and the bar and the feet to the transoms.

3. In a car-brake, a truck-frame having transoms, hangers pendent from the transoms, bars above and resting on the transoms, grooves in the bars, clips engaging the hanger ends, dowel-pins on the clips and holes in the hanger-feet therefor, upwardly-tending ends for the clips and entering the grooves in the bars, and means to force the clips to the hanger ends and the bars, and the bars and the hanger ends to the transoms.

4. In a car-brake, a truck-frame and wheels therefor, brake heads and shoes at the front and back of the wheels, means to couple the front heads and shoes to each other, and the back heads and shoes to each other, longitudinally, outside ofthe wheels and inside of the Wheels.

5. In a brake for car-trucks, comprising a central toggle mechanism at each side of the truck, a system of brake heads and shoes at the front and back of each wheel, means to couple the front heads of each Wheel together, and the back heads of each wheel together, the coupling means passing outside and inside of the wheels and operative by the toggle mechanism, and means for operating the toggles in unison.

6. In a car-brake, a toggle mechanism between the wheels at each side of the truck, means thereto connected to brake each wheel at its front and back, simultaneously, and resilient means to disengage the brake when the power is released.

7. In a brake, central toggle mechanisms at each side, between the wheels, a crossshaft coupling and operating the toggle mechanisms in unison, and preferably of rectangularcross-section, and a central lever adapted to operate the shaft and notched onto the same, and a yoke-bolt securing the lever to the shaft.

In testimony whereof I affix my signature in presence of two Witnesses.

JOSHUA S. SHEETS.

Witnesses:

R. C. WRIGHT, WILLIAM C. STOEVER.

IOO

lor,

IIO

Images