US725329A - Car-truck. - Google Patents

Description

"PATENTEDAPR. 14, 1903;

G. G. FLOYD.

GAR TRUCK.

APPLICATION FILED JULY 5, 1902.

N0 MODEL.

.ATENT CFFICE.

GEORGE c. FLQYD,OF,ST.-LOUIS,1MISSQDYRIEASSIGNOR TOWUNITED STATES RAILWAY EQUIPMENT OOMPANY, oEsT.'-LoUIs,- MISSOURI, A CORPORA- TION.

CAR-TRUCK.

SPECIFICATION forming part of Letters 'taent 110.7%,329, dated A ril 14, 1903.

Application filed July 5, 1902. $e1ia1No. 114,468. (No model.)

To all whmn it may concern;

Be it known that I,G-EORGE G. FLoYD,a citizen of the United States, residing in the city of St. Louis,in the State of Missouri, have invented certain new and useful Improvements in Gar-Trucks, of which the followingis a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to an improved manner of. putting together the side frames and the bolsterof a railway-truck, my object being to reduce the cost of the fitting of the parts.

With this object in view my invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a side view of the side frame, showing part of the bolster. Fig. II is a top or plan View, part in section. Fig. III is an enlarged detail vertical section taken on line III III, Fig..II. section taken on lineIV IV, Fig-III. Fig. V is a detail perspective view showing part of the side frame. Fig. VI is a detail vertical section showing a modification.

Referring to the drawings, 1 represents the side frame of a car-truck, and 2 the bolster, both made of cast metal. v

Heretofore it has been customary and necessary to plane the entire contacting surfaces between the bolster and the side frames in order to get a sufficien tly smooth and close bearing between the two. This involved considerable labor and expense, owing to the time required to do the work. To avoid this large amount of labor, and thereby save time and cheapen the cost of manufacturing the truck, I cast the sideframes with projections or studs 3, and I cast the bolsterwith corresponding recesses 4, the former fitting within the recesses.

Fig. IV is a detail vertical projections or studs and the side frames with Before putting the parts together the studs are planed or ground off by the use of a special tool, and the recesses are in like manner smoothed up, so that when the parts are put together there willbe a close rsmooth bearing betweenthese parts.- When the parts are fitted together, they areheld by rivets or bolts 5, preferably passed through the sideframes and bolsterat the. projections 3, as shown in the drawings. The projections are made of sufficient height to holdthe main surfaces of the bolster out of contact with the side frames, as shown at'6, and it thus becomes unnecessary to plane or smooth oif the main portions ofthe bolster and side" frames (which may be left rough, as shown in .Fig. V) where they would come together in the absence of the projections, and the time and labor required to fit the parts together 'is thus greatly reduced.

= .-In Figs- I to V, I have shown. the .pro'j .tions 3 formed integral with'the side frames 5 1 'butfif preferred, separate projections or washers 7 maybe used, as'shoWninFig. VI,

these projections'or washers being received by recesses formed both "in the side frames.

and in the bolster.

I claim as my invention- 1. In a car-truck, the combination of a side GEORGE G. FLOYD.

In presence of E; S. KNIGHT, M. P. SMITH.

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