US1345257A - Subsill and draft-arm - Google Patents

Description

W. M. RYAN.

SUBSILL AND DRAFT ARM.

A-PPLICATION FlLEVDSEPT. 16, 1919. 1,345,257.' Patented June 29, 1920.

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APPLICATION FILED SEPT. I6, 1919.

UNITED` STATES PATENT OFFICE.

WILLIAM M. RYAN, 0F CHICAGO, ILLINOIS, ASSIGNOR TO -THE RYAN CAR COMPANY,

A CORPORATION OF MAINE.

- SUBSILL AND DRAFT-ARM.Y

Specification of Letters Patent. v Patented June 29, 1920.

Application filed SeptemberlG, 1919. Serial No. 324,197.

Y To all whom t may concern:

-of which the following'is a specification and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to railway cars, and has for an object the provision of coacting sub-sills and draft arms, that may be applied to wooden cars which have become weakened through age or use or for any reason need strengthening in view of theincreasingly heavy service being now'required.

An illustrative embodiment of the invention is shown in the accompanying drawings in which- Figure 1 is a plan View of the two ends of the device with center omitted for economy of space;

Figs. 2 and 3 are detail sections on line 2--2 and 3 3 respectively of'Fig. 4;

Fig. 4 is a detail plan view partly .in section, of one end of the structure drawn to an enlarged scale, and v Fig. 5 is a detail section on line 5-5 of Fig. 4.

There are at present in use many old lwooden cars which through age or long use or change in conditions of service, are now too weak to resist the loading customarily placed in cars of their capacity. To strengthen such cars the structure provided by the present invention may be applied thereto and attached to the bolster, as 10, which is intended to illustrate a portion already forming a part of thecar to be strengthened, representing a well known type of bolster now in use. The structure may further be attached to the wooden sillsV Y of the old car, indicated at 11.

Some of the most severe stresses applied to railway cars are those due to draft and buff. To apply these stresses directly to the strengthening means of the present invention the structure comprises draft arms, as 12, 13, which may be secured to the wooden sills l1 by vertical bolts passed through the fianges, as 14, ofv the draft arms. The bolsters of the type illustrated have openings, as 15, therethrough, and this fact is taken advantage of by passing the draft arms through these openings and causing them to project beyond the bolster, as at 1G.r Under these lcircumstances the draft arms are prefi erably secured to the bolster, as by rivets 17.

For additional `securing means between lthe draft arms and the bolster, as well as to connect the draft arms to each other, upper and lower gusset plates, las 1S and 19, may be secured to both draft arms and bolster.

Plate 18, is shown as overlying both draft arms and underlying the upper'flange, as 20, of the bolster and riveted to each, while plate 19 is shown as underlying both draft arms and as overlying the lower flange, as 21, of the bolster and being riveted to each.

The draft arms 13 and 14 are preferably made of cast metal, in which case they may be made of any desired thickness and will not be limited to stock sizes of structural metal which might not be sufficiently strong in .the size which could be obtained and which would videdjwith draft lugs 22, buflingilugs,`as 23, and with slots 24, 25, 26 to fit a known form of draft rigging. The arms may be strengthened'by flanges, as 27, 28, if (le sired.4V Y A i For support of the wooden sills intermediate the bolsters, as well as to transmit draft and buing stresses from bolster to bolster, there are shown supplemental center sills, as 30, 31, shown as comprising stock shapes of channels. These channels may be and preferably will be secured to the wooden sills 11, as by vertical bolts (not shown) passed through the flanges of the channels and the sills. They are shown as extending from bolster to bolster, and as lapping past the projections 16 of the draft arms. Under these conditions the webs of the channels and draft arms are preferably secured together, as by rivets 32.

pass through the openings 15V in the bolster. The arms are shown as pro- The upper flanges of channels 30, 31, are

moreover the stress caused by the car loadingis a tensile stress at the bottom edges of the channels. To provide additional strength at this point a continuous plate in the nature of a bottom cover plate, as 35, is shown as riveted to and closing the space between the channels B0, 31, from end to end thereof. Slots, as 36, are shown through which the brace rods, lnot shown, may be extended. p

The channels 30, 31, and the cover plate 35, thus practically form a box girder, and by virtue of the connection with the draft arms form a continuous strengthening means between the draft gears at the' two ends of the car.

To assist in transmitting buiiing stresses from the draft arms to the bolster, the upper flange, as 14, of the draft arm may be formed with an offset, as shown at 36', which will abut against the bolster. The edge of the upper flange of the bolster, at 37 (Fig. 5), is thicker than at 3S (Fig. 2), the difference being substantially equal to the thickness of the gusset plate as preferably supplied. To allow the gusset plate 18 to lie flat on top of the upper flange of the channels 30, 31, and pass freely under the upper flange, as 38, of the bolster, a second offset, as 39, is preferably formed in the upper flange 14 of the draft arms, said second offset being equal to the thickness of the upper flange of the channels. Throughout the projection 16 Vof the draft arms the upper flanges are shown as formed at an angle tothe web thereof, as atv 40, to fit the angle of the inside of the flange 41 of the channel.

By means of the structure described both Vbuff and draft stresses will be transmitted severe will not depend entirely upon theV rivets at any given joint between the parts.

I claim as my invention:

1. In car reinforcing means, in combination, draft arms extending through and projecting beyond the bolsters, sub-sills connecting with the inwardly projecting portions of the draft arms, gusset `plates connecting said sub-sills and secured to the upper flanges of the bolsters, other gusset plates connecting the draftl arms and secured to the lower flanges of the bolsters.

2. In car reinforcing means, in combination, a bolster, draft larms extending from the end of the car through and extending beyond said bolster and having a shoulder abutting against a flange of said bolster, sub-sills connected to the inwardly projecting ends of the draft arms, and gusset plates connecting the draft arms with each other, the sub-sills with each other and each Vto the bolster.

3. In car reinforcing means, in combination, .a bolster, draft arms extending from the end of the car through and projecting beyond the bolster,a vshoulder on the upper edge of each draftV arm adapted tov abut a flange of thebolster, sub-sills secured to the ends of thedraft arms, and a second shoulder on each draft arm adapted to abut the end of a sub-sill.

WILLIAM M. RYAN.

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