US551963A - Car-truck - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

D. F. HENRY.

GAR TRUUK.

N0. 551,963. Patented D60. 24, 1895.

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D. F. HENRY.

GAR TRUCK No. 551,953. Pai-,51115511 D55. 24, 1895.

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ANDREW B-GRANM.PHOTO-UTNQWASHINBYDN. IIC

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DAVID F. HENRY, OF ALLEGHENY, PENNSYLVANIA.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 551,953, dated December 24, 1895.

` lppiioaion nea october 1, 1894. serial No. 524,590. (No maar such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, in which* Figure 1 indicates a side elevation of my improved car-truck. Fig. 2 is a plan of the same. Fig. 3 is an end View of the same, showing axle-box in vertical section. Fig. 4 is a side elevation of a modification of the same. Figs. 5 and 6 are respectively plan view showing horizontal section of axle-box, andend view showing vertical section of axle-box.

My invention relates to car-trucks, especially to trucks adapted to cars for use upon street-railways.

My object is, first, to produce a truck, by the use of which a longer or more extended wheel-base may be used, and consequently a longer car-body than at present possible without resorting to double trucks to support the same, and at the same time to so construct the same as to prevent buckling or bowing at the middle usual in car-bodies mounted on the single trucks at present in use; second,

to minimize or to entirely avoid the excessive friction upon the wheels and axles and strain on the truck occasioned by the use of the present rigid axle-bearings, and, third, to produce a truck by the use of which the greatest possible evenness and ease in riding is attained truckaframe at either side the wheels, the lower ends of said rods, respectively, being bolted to the outer and inner sides, respectively, of said pedestal near the bottom thereof. A plate or hanger 7 is rigidly secured to said brace-rods 6 6 on either side the wheels,- the lower ends of the links 8 8 being connected to said plate or hanger, and the upper ends of said links being connected to the outer ends of the semielliptical springs 9, which are mounted on the top of said axle-boxes, being secured thereto by the plates l0, which are bolted or otherwise secured upon the top of said boxes, whereby said truck-frame and the car-body mounted thereon are supported by the ends of said springs. The axle-boxes are mounted in said pedestal 4 in such manner as to permit said boxes to move or reciprocate longitudinally and vertically, the longitudinal reciprocating movement of said boxes, as shown by the dotted lines, being sufficient to enable the axles journaled therein to radiate in the arc of a circle in turning sharp curves; or, in other words, to permit the axle box or boxes of the wheels turning the outer and larger radius of a curve to progress slightly in the direction of the travel of the car, while the axle box or boxes of the wheels on the inner and smaller radius of the curve remains stationary or retrogrades proportionally, whereby the axle is enabled to swing in the arc of a circle and to acco1nmodate itself to exceedingly sharp curves, and thus obvating the friction and strain upon the axle-boxes and pedestal occasioned by the use of rigid axle-boxes in turning curves, the vertical movement of the axle-boxes enabling the truck to accommodate itself to ordinary and excessive loads. The links to which the ends of the springs are connected enables said springs to progress longitudinally or move backward and forward in unison with the axle-boxes.

1l is a brace-rod extending on either side the wheel-base, the ends thereof being connected to the plate 4.

In Figs. 4, 5, and 6 I show a modification of my invention in which are shown'the wheelbase carried on the springs 9, which instead of being mounted upon the top ofthe axlebox IOO are mounted substantially in a similar manner upon the bottom thereof, the links secured in the brace-rods 11 producing,` What I call a lower suspension-truck, otherwise being substantially the same as heretofore described.

Having described my invention, what I claim, and desire to secure by Letters Patent,

In a car truck substantially as described, the combination of a frame, pedestals connected thereto, aXle boxes mounted n said pedestals and adapted to reciprocate longitudinally and vertically therein, semi elliptical springs mounted upon said axle boxes,

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