US2090498A - Welded truck - Google Patents

Description

w. T. GRIFFIN Aug. 17, 1937.

WELDED TRUCK Filed Jan. l0, 1936 Patented Aug. 17, 1937 UNITED STATES PATENT OE'FBQE WELDED TRUCK Application `lanuary 10, 1936, Serial No. 58,472

4 Claims.

This invention relates to car trucks in general and in particular to car trucks of the built-up or welded type.

The majority of trucks now in use on the rail- 5 roads have the side frames at least formed of cast metal which of necessity must b-e heavier than is consistent with the present trend toward light weight equipment. It is an object of this invention therefore to provide a fabricated truck which is much lighter than the cast frames.

Another object of the invention is the provision of a truck-formed of plate metal welded together.

A further object of the invention is the provision of a light weight welded truck frame wherein the metal may be properly distributed.

These and other objects of the invention will be apparent to one skilled in the art from a study of the following description and accompanying drawing in which:

Figure 1 is a perspective view of substantially one-fourth of the truck, and

Fig. 2 is a sectional view of the side frame taken on line 2-2 of Fig. 1.

Referring now to the drawing in detail, it is seen that the truck is formed with welded side frame A, having bolster opening B and opening C for reception of the axle boxes, and that these side frames are connected together by transoms D and cross-ties E to form a truck but, since the truck is symmetrical, only one-fourth has been shown, it being understood that the remaining portions are constructed in the same manner.

The side frames are formed of a central sheet or web of plate metal 2 extending between the inner pedestal jaw plates 4 to which it is securely welded, and this central plate is formed with lightening openings 6 and the bolster opening B, which latter is reenforced by welding a strip 8 to the edges of the opening. Each of the outer pedestal jaw plates IE! has welded thereto end web plates I I of substantially triangular formation and the edges of these plates, as well as the upper edge of the central plate, are securely welded to a strip I2 which extends continuously from the lower portion of one outer pedestal jaw to the corresponding portion of the other outer pedestal jaw. The side frames are Completed by a lower strip I4 welded to the central web sheet and extending between the inner pedestal jaw plates to which it is also welded, and by tie plates I6 riveted in place and extending across the pedestal jaws to join the strips i2 and I4. It is thus seen that the side frame is formed of three pieces of plate metal and seven strips of plate metal securely welded together with the pedestal tie bars formed by two strips of plate metal riveted in position.

The spring pocket 29, formed of pipe or plate metal bent to form a tube, is securely welded to top strip I2 and to the pedestal jaws in an offset portion 22 thereof and thus forms an extremely strong tie between the pedestal jaws. The spring pocket receives the usual coil spring, having one end resting on a journal box (not shown) that is guided by wear plates 24 backed up by rubber l0 blocks 26 which cushion the horizontal and lateral forces caused by braking, driving or flange thrust forces. A support for the rubber blocks is formed by welding small pressed Z members Z8 to the web plate adjacent the pedestal jaws to l5 which are welded the edges of channel shaped pressing 3E) overlapping the pedestal jaw plates.

The transoms D are: formed of pressed metal having a lower flange: 32, web- 34, upper flange 36 and a downwardly directed reflange 38 and 20 the transoms are connected to the truck frames by rivets or other means 49 passing through strip 8. Added attaching area, for the transom is obtained by welding and riveting an angle shaped plate 42 to the strip 8 and web plate. g5 Gusset plate 44 isl riveted to the transom top flange and side frame top strip to prevent weaving of the frames and is formed with a downwardly directed stiffening flange 46 and brake lever opening 41 on either side of which are weld- 30 ed brake hanger brackets: 48.

The crossties are formed of pressed metal with a depressed central portion and are of channel formation with the web 50 abutting and riveted to the strips I2. Top gussets 52 having stiifen- 35 ing flanges 54 are rivetedto the upper flanges 55 of the crosstie and to the upper strip I2, while angle shaped members 58 also join the lower ange 5B of the crosstie to the strip l2. It is thus seen that an extremely strong connection 40 is formed between the welded side frame and the crosstie to resist ani7 weaving or braking strains. The crosstie may carry a pressed member 62 forming a platform for the reception of a brake cylinder (not shown). 4.5

The portion of the truck shown has been described more or less in detail but it is to be understood that the remainder of the truck will be formed in the same manner and that various modifications and arrangements of parts will bey 50 apparent to one skilled in the art which may be made without departing from the scope of the following claims.

What is claimed is:

1. A railway truck side frame formed of plate 55 and a metal strip extending along the lower edge of said central web plate between said inner guides, said strips lying in planes substantially at rightrangles to said'V web plates and being welded thereto. Y v

2. A railway truck sideY frame formed of plate metal comprising, a centralweb plate, end web plates spaced from said central web plateto formv journal box openings, substantially vertical strips extending along the adjacent edges of said plates to form inner and outer guides, a metal strip extending continuously across the top of said web plates from the lower edges of said outer ,guides, a metal strip extending along the lower edge of said central web plate between said inner guides, said strips lying in planes substantially at right angles to said web plates and being Welded thereto, said central web plate having an opening cut therein, and a metal strip welded to Vthe edges of said opening to form a. bolster re' ceiving portion. i

3. A railway truck side ,frame formed of plate metal comprising, a central web plate, and web plates spaced from4 said central web plate to form journal boxY openings, substantially vertical strips extending along the adjacent edges of said plates toY form inner and outer guides, a metal strip extending Ycontinuously across the top of said web plates from the lower edges of said `outerguides, a metal strip extending along the lower edge of said central web plate between `said inner guides,V said 'strips lying in planes substantially at right angles to said webplates and being welded thereto, and means secured to said vertical strips and web plates to form journal box thrust receiving portions. j

4. A railway truck side frame formed of plate Ymetal comprising, a central web plate,'end web plates spaced from said central web plate to form journalrbox openings, substantially vertical 'stripsV extending along the adjacent edges of said plates to'form inner and outer guides, and a metalstrip extending continuously from; the lower edges oi said outer guides upwardly around and across the top of said web plates to connect the latter, said strip lying in a plane substantially at right angles to said web plates and Ybeing welded thereto. Y y

, WILLIAM T. GRIFFIN.

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