US187761A - Improvement in safety-cars - Google Patents

Description

J. JOHNSON.

SAFETY-GARS.

No. 187,761. Patented Feb.z7,1rs177.

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: 1 PE1-ens PHUTO-UTHDGRAPHER. wnsHmGwN. u c4 JOB JOHNSON, OF BROOKLYN, NEW YORK.

iMPRovEMENT in sAFETv-CARS.

Specification forming part of Letters Patent No. 18727611, datedFebruary 27, 1377; application tiled December 20, 1876.

or anges h prevent injury, and retain the car upon the track. These hanging arms h may be separate from the bearings of the rollers g g', as seen in Figs. 1,2, and 5; or the inner bearings of said rollers may extend down to form the said arms h and clips,V as shown in Fig. 3.

Usually the brakes are applied to the wheels but this tends to strain the wheels and axles, and to make the Wheels slip upon the track and wear Hat at places upon the periphery, thus injuring the wheels, and sometimes the wheels leave the rail, especially in turning curves, because the wheels are not free to accommodate themselves to the track. I avoid this difficulty by applying the brake to the inner supplemental rail e and this brake is located midway between the wheels, so as to aid in retaining the wheels on the track, and -to 'prevent any tendency to hold one pairot' wheels on the track and throw the others off.

The rock-shaft u is '1n bearings upon the truck-frame a, and it is rocked in either direction by the brake rod or chain 12 acting upon the arm 13. rIlhis brake rod or chain may be operated by the usual brake wheel and shaft, or it may be moved by the ordinary air or steam brakes.

From the rock-shaft uthere are brake-arms c, with rocking graspers w at their lower ends. These graspers w are made as ianges to the arms e, passing above and below the ilange e oi' the supplemental rail e, and the edges ot tht langes are curved .or rounded, and hence when the' shaft u is rocked and the arm: swung, the graspers w seine the ange of th rail with a sufficient force to act as a brake and arrest the movement ot' the car with mor or less rapidity, according to the force a] plied to the brake; and I remark that the i` To all whom 'it rmol/ 1,1 concern:

Be it known that l, JOB JOHNSON, of Brooklyn, Kings county, New York, have invented an improvement in Trucks for Railway-Gars, of which the following is a specification:

The objects of this invention are, to lessen the risk of the wheels leaving the track, to prevent the car leaving the track if a wheel or axle or rail is broken, to relieve the vwheels and axles from the strain consequent upon applying the brakes, to prevent the car tipping sidewise if exposed to a severe gale of wind, and, lastly, to facilitate the stoppin g of the car.

The devices employed for the aforesaid ob. jects are shown as applied to a truck-frame for a car. 1n this case springs will be required between the truck-frame and car 3 but in cases where the ordinary springs and sliding axleboxes are used, the present improvements will be applied to a frame sustained bythe axles oi' the wheels.

1n the drawing, Figure 1 is a plan view representing the improvement. Fig. 2 is a longitudinal section. Fig. 3 is an elevation oi the guide-wheels. Fig. 4 is a section of the brakes, and Fig. 5 is an elevation of the clips for preventing the car tipping laterally.

The frame a is supported by the wheels b and axles c, there being pillar-blocks and axleboxes of any usual kind. The rails dare of usual character, and there is an additional guiderail, e, inside of each rail d, and this rail e has an inward ange, e', along the upper edge.

Near the angle of the truck-frame are placed guide-rollers, that are made with two cylinders, g g', oi' different diameters, to run upon the surfaces of the rails d and @,andbe guided by the cylinder g which forms a iange to the cylinder g, so that if either wheel b, or axle c, or rail L breaks or becomes injured, the frame a will not drop upon the track, but it will be dia-rubber bui'ers or springs t at each side t supported and guided by the wheels orI rollthe lever-arm 13 upon the brake-rod yield ers g g'. either direction, according` to the power e From the inside of the frame a there are erted, and prevent injury to the parts by t hanging arms h, with flanges or clips at their brake being applied too suddenly. ends, passing beneath the upper iiange e of 1 claim as my inventionthe rails e, so that an additional protection is 1. The combination, with the truck-fram given, and the truck prevented from leaving and wheels b, oi' the guide-rollers g g', each the track and if there'is any sudden gale oi' ing composed of two different-sized cylinde wind acting to tip the car laterally, the clips and the mainrails d and supplemental r:

tally as set forth. 2. The combination of the truck-frame a, Signed by me this 16th day of December, wheels b, guide-rollers g gf, main rail d, sup- A. D. 1876.

plemoutary rails e, and haugiugarms la, for the JOB JOHNSON. purposes and substantially asfseb fof th. f. Witnersses'g' i 1 A 3. The brake-arms o and g'raspers w, in oom- GEO. T. PINGKNEY,

bination with the rookshaft u and brake-actu- OHAS. H. SMITH.

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