US903490A - Column-guide for car-trucks. - Google Patents

Description

c. F. MURRAY. COLUMN GUIDE FOR OAR TRUCKS. APPLICATION FILED DEO.7.1907\ 903,490. Patented Nov. 10, 1908.

UNITED STATES PATENT FTCE.

CHARLES F. MURRAY, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STEEL FOUNDRIES,

" OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

COLUHN-GUIDE Fort can-Time.

Specification of Letters Patent.

Patented Nov. m, 1908.

. Application filed. December 7, 1907. Serial No. $05,604.

To all whom it may concern:

Be it known that 1, CHARLES F. MURRAY, a citizen ofthe United States, residingat Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Column-Guides for Car-Trucks, of which the following is a specification.

My invention pertains to improvements in railway cartrucks, and concerns especially the means for supporting the bolster and maintaining. it in place in such a manner that it may be readily and quickly removed from the truck and side-frames.

It has been customary and usual heretofore to'remove thevbolster from the truck liy drawing it lengthwise through the cen-' tral bolster and spring opening in one of the cast-metal side-frames. Owing, however, to the great depth of the bolsters, frequently used at the present time, at their middle -portions, it is not only diificult but in some cases quite impossible to withdraw the bolster in this manner, the hole or aperture in the side-frame having an insuflicien t .vertical dimension to allow the withdrawal of the bolster in the manner indicated. In most railway car truck constructions the bolsters are long enough to extend through the apertures of the side-frames and have guiding lugs or ribs co-acting with the frames to prevent or limit longitudinal shifting of the bolster. I

One object of my invention is to modify the usual construction so that even though the bolster is of great depth at its central part, it can nevertheless be pushed outwardly through the aperture of one of the side-frames to release its other end from the opposite side-frame, whereupon its freed end may be lifted out of the truck and the whole ,bolster shifted lengthwise in the opposite direction to withdraw its-other end 'from the sideframe through which it had previously been temporarily projected, and thus free the bolster entirely from the truck. In my improved construction the bolster has no column. guides, its ends resting on castings forming combined springcaps and column guides.

()n the accompanying drawing, forming a part of this specification, I have illustrated a desirable embodiment of my invention, and

throughout the various views like reference characters refer to the same parts. I

,On this drawingFigure 1 is a side elevation of a portion of a' railway car truck illustrating a desirable embodiment of my invention; Fig. 2 is a perspective View of the end portion of the bolster used in this truck; Fig. 3 is a perspective View of thecolumn guide. casting employed in this truck; Fig. 4 is a vertical cross- Sept-ion through the top part of the truck, the 1001 ster being shown unsectioned; Fig."5 is'a horizontal section on line 5- 5 of Fig. 1, the bolster being omitted; and Fig. 6 is a horizontal section on line 6'-6 of Fig. 4;, the bolster being omitted.

Referring first to l i'g'; 1 especially, it will be noticed that the car truck has acastmetal side-frame 45, a central opening 44: being provided in the side-frame for the accommodation of the bolster-supporting springs and the bolster, and in this embodiment of my invention the opening 144 is of uniform width for-the entire portion of its vertical length. The car truck has a spring seat 46 on which are superposed a plurality of coil compression springs 47, on the top ends of which is seated a casting 58 forming a combined column guide andnspring cap. This casting, as is clearly indicated in the figures, has a substantiallyfiat bottom wall 59 equipped on its lower or under surface with a downwardly-extended curved flange 60 to retain the sprin s in position. Arising from the opposite en s of this floor or wall 59 are a pair of vertical parallel end walls 61, each having on its outer surface a single guiding rib 641 adapted to co-act with the inner surfaces of the column portions 40 of the sideframe to guide the column guide casting in its up and down movements and to prevent its displacement. The outer edges of these vertical end walls 61 are joined together by an abutment wall 62 integral therewith, it being understood that this bolster support is formed in a single piece, as is clear y illustrated in Fig. 3. At each side of the car truck the bolster 63 is adapted to rest upon the bottom wall or, floor 59 of one of these castings, itsweight and thelorid which it sustains-being borne by the supporting springs 47. Each end of the bolster co-acts'with one of the walls 62 to prevent longitudinal shiftin or limitlengthwise movement of the bolster, outward movement of'the castings being prevented, as is obvious, by the cooperation of the guiding ribs 64 with the side-frames.

' In order to remove the bolster it i's'merely in this manner it may be shifted longitudinally so as to project one, of its ends through, one of the side-frames sufliciently to free its other end from the opposite side frame, whereupon this latter end may be lifted out of the truck and the bolster readily removed, as described above.

Although I have described with some degree of particularity the minor details of construction of this device, I desire to have it understood that myinvention is not limited to the precise structural features shown and ,described, but that it covers a'variety of minor mechanical modifications which will be apparent to those skilled in the art.

I claim:

1. In a railway car truck, the combination of a side-frame, one or more springs supported by said frame, a bolster'support or v s rin ca sustained b said s r n or springsand having one or more guiding ribs cooperating with one side only of-said sideport or spring cap, and means to prevent lengthwise shiftin of said bolster on said support, substantia ly as described.

frame, a bolster resting on said bolster sup- 2. In a railway car truck, the combination of a side frame, one or more springs sup' ported by said frame, a bolster support sustained by said spring or springs and having one or more gu ding ribs cooperating with the inner surface only of the side-frame, a bolster resting on said bolster support, and means to prevent lengthwise shifting of said bolster on said support, substantially as described.

3. In a rallwav car truck, the combination of a -side-frame, one or more springs supported by said frame, a bolster support sustained by said spring or springs, said bolster support having a bottom .wall or floor, and end walls arising from said bottom wall or floor and having guiding ribs coiiperating with said side-frame, and an abutmentwall or web connecting saidend walls, and a bolster resting on said bottom Wall or floor, said connecting wall or-webro-acting with said bolster to prevent longitudinal shifting thereof, substantially as described.

4. As an article of manufacture, a casting adapted to rest. on the springs of a car truck side-frame and support a bolster, said (ash ing' having guiding ribs to co-act with one side only of the side-frame, andmeans to cooperate with the bolster of the truck to limit or prevent lengthwise shifting of the bolster, substanti all y as descriliied.

CHARLES F. MURRAY. i Witnesses FREDERICK Goonwm, WALTER M. FULLER.

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