STEEL Harvey Steel Box Car (Fig. car is essentially a steal car, but it has a wooden floor and lining. The center sills are made of 12-in. channels, 20 lbs. per ft.. placed 1() in. apart. To these channels are riveted the drawbar attachment, as shown. The center of draft is on a line with the lower flange of the 12-in. channel: thus these channels form not only a strong compression member but a continuous draft as well. The intermediate sills arc of two 6-in. channels, each weighing lhs. per ft. They are placed, as shown. with their turned inward and separated just suffi ciently to allow a 1-in. bolt to pass be tween them. They are held from sepa rating laterally by menus of clamps above and below, through which the bolts pass. The clamps have lips on the ends which turn down over the channels, as shown.
The side sills are formed in the same way and held with similar clamps and bolts, but the flanges are turned outward instead of inward. On top of the chan nels which form the intermediate and side sills are placed wooden battens held by 1 in. bolts which pass down between the channels. To these battens a 21-in. floor is nailed. To further stiffen the cen ter sill laterally, strips of wood are nailed to the floor on each side of the sill. The end sills are formed of two channels, one in front of the other. Between these channels pass the bolts for holding the wooden battens to which the floor is nailed, To stiffen the end sills at the center a horizontal plate is riveted to the end sills and extends outward to the end of the wooden draw-bar stop, shown in the plan and side elevation. This plate acts as a gusset to carry the buffing blows to the intermediate sills. It is 3 ft. long, ,4 in. thick, and 10 in. wide. The body bolsters are formed of two 6-in. chan nels, 5 lbs. per ft., arranged, as shown, with two tension members, 2 in. x 1 in., with Tends extending over the top of the center sills. This forms a strong and light body bolster, which for its weight will carry a greater load than any bolster of the ordinary form. To give this body bolster greater carrying capacity, two 4-in. I-beams are inserted between the
channels and the sills. These extend from side bearing to side hearing across the car. Thus the body bolster is about in. deep at the center. The needle beams are made of 5-in. I-beams extending across the car, as shown. In addi tion to these lateral braces there are also intermediate braces formed of 4-ip. channels bolted to the sills. The posts are formed of pressed steel of U-section and secured by strap bolts at top and bottom, which pass through the sills, the top sill or plate being made in a manner similar to the side sills, but 5 in. deep instead of 6 in. The inclined braces are made of angle iron 3 x 2 x and the tension rods of -in. round steel. The doors are of steel, ingeniously formed into a stiff shape without the use of angle irons. This is probably the strongest door for its weight yet made. It is formed of No. 16 steel, riveted with in. rivets. The end door is of similar construc tion and mounted on suitable slides. The canines are formed of No. 9 steel bent to a U-she-pe and curved to con form with the roof of the car. The . U-shape of both the posts and the confines has been devised for the pur pose of receiving the wooden strips to which the corrugated siding and roof is nailed. The car is lined through out with wood and covered on the outside with corrugated steel, No. 22 R. W. G. The roof is No. 20 B. W. G. This is the most promising steel car that has yet been constructed in this country. (See Railroad Gazette, September 18, 1891.) Staadard Trock.—The general construction and leading dimensions of the standard truck designed for the N. V. C. & II. R. Railroad arc as follows: It is a rigid truck, with a 15-in. channel bar having 4-in. flanges, for a sand plank. The bol ster is 12 in. wide by 11 in. deep, and is trussed by two 1k-in. round rods. This bolster, which is in tended to carry about 35,000 lbs., has a safe work ing strength of 86,000, so that the margin of safety is enough. The axles are M. C. B. standard, with x 7-in. journals. The center plate is of iron.