US424269A - Street railway car truck - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. W. GARY. STREET RAILWAY GAR TRUCK. No. 424,269. Patented Mar, 25, 1890.

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STREET RAIL-WAY GAR TRUCK.

1%.. 424,269. Patented Mar. 25, 1890.

UNITED STATES PATENT OFFICE.

WALTER M. CARY, OF SAN FRANCISCO, CALIFORNIA.

STREET-RAI LWAY-CAR TRUCK.

SPECIFICATION forming part of Letters Patent No. 424,269, dated March 25, 189Q.

Application filed December 14, 1888. Serial No. 293,654. (No model.)

. specification.

My invention relates to that class of streetrailway cars having a swinging truck under each end for the purpose of allowing car to run on the curves of a railway. As now constructed, the swinging trucks of a railway-car, where such are used on cable and electric roads, consists of four wheels and two axles eaclnwith their attendant multiplication of parts-an arrangement which necessitates great weight of iron-work and unnecessary machinery for street-railway purposes.

The object of my invention is to utilize the slot or gripway of a cable or electric roadbed as a guide for the car-wheels upon the track in the place of a guiding pair of wheels and axle now used for that purpose, and by so using the slot or gripway as a guide for the car-wheels and axle I am enabled to change the present form of double-axled truck to a single-axled truck, and thus greatly reducing the weight, the number of parts, andthe cost of construction. I accomplish thisin the following manner, and as illustrated in the accompanying drawings, in which Figure l is a side elevation of the entire mechanism; Fig. 2, a top view or plan of the same; Fig. 3, an end elevation of the forward truck; Fig. 4, an end elevation of the rear truck.

Similar letters refer to similar parts throughout the several views.

Under each end of the car-body is placed a single axle A, having two wheels each B B, bearing upon the tracks in the usual manner, the weight of the car being carried by the double frame 0 C, connected tojournal-boxes D D through the bolts E E and resting upon car-springs F F. The bolts E E are carried up and form a side bearing for car. The journal-boxes D D are connected by the tie-bars G G. The center pins H II allow car-wheels to swing in any desired direction.

Immediately below center pins H H are placed center plus I and I, alike in both f0rward and rear trucks. Connecting the center pins I and Iin both trucks is the frame J, of'light but rigid construction, keeping the axles the proper distance apart and in position, both trucks being free to turn on center pins H H and I and I when car passes curves in the road.

Extending from the top and bottom frames G G on both trucks are the triangular projecting frames K K. At the end of each of said projecting frames K K is attached the guide-plate or flat steel piece L L, which extends downward and through the road-bed of railway between the two angle-irons X of the slot in middle of' said road-bed, which forms the permanent way of a cable road and of some forms of electric systems, the use of said guide-plates L L being to guide and swing the axle and wheels with which each is connected, as described, the swinging being necessary and taking place only when car reaches that part of the railway where a curve is met, when the car will move around the sharpest curve with a facility and absence of friction impossible with double-axled trucks as at present in use. A motive-power-transmitting device may be placed upon the forward truck-frame K K and extend downward through the slot in the road-bed.

In the case of acable railway the gripping device for the cable may be placed on the forward truck-frame K K in the usual manner, the pins M M being shown in position for fastening the grip to frame. The wheel-brake N on forward truck is operated by the footlever O, projecting through the floor of car. The track-brake P on rear truck, as shown, is operated by the rocker-shaft Q, lever B, and rod running to hand-lever S in car. Rear truck is also provided with wheel-brake, as shown.

Having thus described my invention, what claim, and desire to secure by LettersPatent,

1. The combination, in a street-railway car, of single horizontal radially-moving axles on wheels, connected at middle of axles by the 2. The guide-pieces L L, connected to the single radially-moving axles on wheels (said axles moving on pins I and I)'through the frames K K and G G, in the manner described, and extending downward and into the slot of railway a sufficient distance for the purpose of guiding and deflecting car-wheels and axles, giving a separate and independent movementin ahorizontal radialdirection with pins H H and I I as centers, all as described.

3. The frame J, as described, for the purpose specified.

4. The combination, in astreet-railway car, of a single independent axle on wheels under each end of car running on journals DD, and connected through the frames G G by the connecting-frame J with the guide-piecesL L, at-

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