US1752728A - Car truck - Google Patents

Description

A ril 1, 1930. s. P. BUSH 1,752,728

CAR TRUCK Filed May 26, 1927 3 Sheets-Sheet l April 1, 1930.

5. P. BUSH v 1,752,728

CAR TRUCK Filed May 26, 1927 3 Sheets-Sheet 2 l l J ------A 1 6 S. P. BUSH April 1, 1930.

CAR TRUCK Filed May 26, 1927 3 Sheets-Sheet 3 III gwoemtoz or m) Patented Apr. 1, 1 930 UNITEDVSTATEFS PATENT OFFICE SAMUEL r. BUSH, or coLUMBiIs, onro; ASSIGhTOB TO THE nncknYn s'rnnr. oAs'rINos COMPANY, orconunnns, onro v CAB TRUCK Application filed May as,

This invention relates to car trucks and has special reference to the spring plank, or spring-carrying member, and themeans for mounting the same in the side frame, the object being to provide a light but strong construction which can be cheaply produced. The invention is illustrated in the accompanying drawing and-will be hereinafter fully described, the novelfeatures being particularly pointed out in the appended claims.

In the drawing, Figure 1 is a side elevation of so much of a car truck as is necessary to an understanding of the present invention;

Figure 2 is a View showing the side frame in section and the ends of the bolster and spring plank in elevation;

Figure 3 is a view, partly in plan and part ly in section on the line 8-3 of Figure 1;

Figure llis a side view showing another embodiment of the invention;

Figure 5 is a sectional view of the shown in Figure 4;

Figure 6 is an elevation showing a form of column differing from the form shown in Figures 1 to 5; i v

Figure 7 is a section on the line' 77 of Figure 6;

form

Figure 8 is a view partly in plan and partly in section on the line 88 of Figure 6.

The side frame is an integral casting in cluding a compressionmember 1, a tension member 2 and columns 3 connecting said members and defining an opening to receive the ends of the bolster and the spring plank, the tension member, between the lower ends of the columns being concave, dished or substantially'V-shaped so as to attain strength without excessive vertical dimension. The upper portions of the opposed sides of the columns are vertical to accommodate the movement of the bolster 4 during travel of the car, while their lower portions converge, thereby reducing the beam action in the s rin '-carr in ortion of the tension mem- P g is 1927. Serial No. 194,353.

is shown as an inverted channel and may be a standard channel or a pressed form of light construction, although the side flanges may be omitted and the plank be only a flat plate or strip of suitable thickness. The end of the spring plank is disposed between the spring seats, as shown, and to maintain it in the same plane or on a level with the spring seats a cast filler 8 is provided, the upper surface of the filler beingflat and the lower surface being convex or otherwise shaped to conform to the tension member of the side frame between the spring seat 5. The spring plank has one or more openings through its end portion and the filler has bosses 9 on its upper side to engage said openings and thereby interlock the plank with the filler to prevent relative endwise movement of the plank, a similar arrangement locking the filler to the side frame as shown at 10 where a boss on the filler enters an opening in theside frame. and openings may be reversed but Iprefer the bosses to be formed on the top ofthe filler as they may be'utilized forcentering the springs, indicated at 11. By employing the described construction and'arrangement of Of course, the arrangement of bosses parts it will be possible tov carry the springs i member 12which. is cast integral with the till tension member of the side frame between the spring seats 5 andis provided with bosses 13 corresponding in all respects to the bosses 9. As clearly shown in Figure 5, the member 12 is of skeleton form-and, therefore, re-

duces weight andthe arrangement gives considerable depth or vertical'dimension to the load-carrying member of the side frame.

In the structure shown in Figuresfi, 7 and 8, the columns 20 do not have side ribs housing the springs but have central ribs 21 which extend to the spring seats 22 and the springs, of course, are arranged accordingly. The ribs 21 reduce the beam action in the springcarrying portion of the tension member of the side frame, and, to provide the desired area inthe spring seats, the seats'are extended laterally beyond the sides of the side frame, as at 23, and have upstanding lugs 24: at their edges which serve to retain the springs in place. The spring plank is shown as having the same form as in Figure 1 and resting on a filler corresponding in all respects to the filler 8 but it will be understood, of course, that the integral structure shown in Figures 4 and 5 may be used with the form of columns shown in Figures 6, 7 and 8.

Havingfully described my invention What I claim as new and desire to secure by Letters-Patent, is

"1. In a car truck, the combination of a side frame having an opening and having spring seats at. the sides of the opening, a spring plank having its end inserted in the opening in the side frame between the spring seats, and a member carried by the side frame and disposed under the end of the spring plank to support the same on the same level with the spring seats, said member being interlocked with the spring plank.

2. In a car truck, the combination of a side frame having spring seats, a spring plank having its end disposed between the spring seats, and a supporting member filling the space between the spring seats and below the spring plank, said member being detachably interengaged with the spring plank.

3. In a car truck, the combination of a side frame havingspring seats, a spring plank having its end disposed between the spring seats, and a filler conforming to the side frame between the spring seats and supporting the spring plank on a level with the spring seats, and means whereby the filler will be held against movement relative to the side frame and the spring plank.

4. In a car truck, the combination of a side frame having an opening and having spring seats at the sides of the opening, a spring plank having its end inserted in the opening in the side frame between the spring seats,

and a member integral with the side frame and disposed under. the end of the spring plank to support the same 011 the same level with the spring seats, said member being interlocked with the spring plank.

5. In a car truck, the combination of a side frame having a compression member, a tension member and columns defining a bolster opening, a filler on the tension membeiga spring plank having an end disposed in said opening and seating on said filler, and spring seats onthe side frame at the bases of the columns and havingtheir upper surfaces substantially on a level with the upper surface of the spring plank.

- 6. In a car truck, a side frame having a bolster opening and columns at opposite sides thereof, spring seats at the bases of the columns, and ribs extending from the inner faces of the columns to the edges of the respective spring seats.

7. In a car truck, the combination of a side frame having spaced columns, spring seat structures at the bases of said columns and extending partially across the space between the columns, each spring seat structure adapted to receive a plurality of springs, and ribs between the columns and spring scat structures and positioned to be disposed between springs on said spring seat structures.

8. In a car truck, the combination of a side frame having spaced columns, spring seat structures at the bases of said columns and extending partially across the space between the columns, and ribs between said spring seat structures and the longitudinally central portions of said columns.

9. In a car truck, the combination of a side frame having spaced columns, spring seat structures at the bases of said columns, ribs between said spring seat structures and the longitudinally central portions of said colspecification.

SAMUEL P. BUSH.

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