US2066441A - Wear plate for railway truck journal boxes - Google Patents

Description

Jan. 5, 1937. H. H. WOLFE ET A1. 2,066,441

WEAR PLATE FOR RAILWAY TRUCK JOURNAL BOXES 2 Sheets-Shet 1 Filed Oct. 2, 1935 Tl II M w N v u P w MW Jan. 5, 1937. H. H. WOLFE ET AL W EAR PLATE FOR RAILWAY TRUCK JOURNAL BOXES 2 Sheets-Sheet 2 Filed Oct. 2, 1935 Patented Jan. 5, 1937 UNITED STATES PATENT OFFICE WEAR PLATE FOR RAILWAY TRUCK JOURNAL BOXES Application October 2, 1933, Serial No. 691,888

12 Claims. (01. 308-40) This invention relates to improvements in wear plates for railway truck journal boxes.

In making side frames for railway trucks from the lighter weight and softer metals such as aluminum, it is necessary to protect certain surfaces from wear, and one location on the frame needing this protection is the top of the journal box, for it is here that the frame bears on the axle journal wedge. The lugs on the sides of the journal box which retain the axle in position through the medium of the journal wedge and brass, also need protection from wear. The frame slides a short distance on the journal wedge when the truck is in motion, due to transverse forces acting on the frame. The frame and journal wedge make a line contact due to the top of the wedge being slightly rounded, and this causes a load concentration which is undesirable for the softer metals.

An object of this invention is to provide a plate of metal for the top of the journal opening which is harder than the metal of the journal box.

Another object is to protect the surfaces of the journal box which come in contact with the wedge and brass, against wear by means of a novel and easily inserted wear plate.

Another object is to provide a wear plate for a railway journal box that stays in position when the box is taken off the journal, but which is also easily removed from the journal box.

A further object is to provide a wear plate for a journal box of sufficient flexibility so that it may be sprung in place and also removed in the same manner.

A still further object is to supply a one-piece hard metal wear plate which when inserted into the journal box will automatically interlock with the box and function from that time to not only take up wear on the top of the journal box, but also on the lugs at the sides of the journal box.

With the foregoing objects outlined and with other objects in viewwhich will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail, illustrated irithe accompanying drawings, and more particularly pointed out in the appended claims.

In the drawings,

Fig. l is a side elevation of a portion'of a railway side frame journal box equipped with one form of our improved wear plate.

Fig. 2 is a top plan view of the same.

Fig. 3 is a vertical sectional view taken on the line 33 of Fig. 1.

Figs. 4, 5 and 6 are, respectively, a front elevation, top plan and side view of this form of wear plate.

Figs. '7 to 12 inclusive are similar to Figs. 1 to 6, but illustrate another embodiment of the invention.

In both embodiments of the invention, it will be understood that we have illustrated only onequarter of a journal box, as this will be sumcient for the purpose of disclosing the invention.

Referring to Figs. 1 to 6 inclusive, I is the journal box which may be made integral with the frame or separate therefrom. 2 is a lug on the side of the journal box for retaining the wedge and brass and spacing the axle. The journal box has the usual back and front openings 3 and 4, for receiving the journal and packing the journal respectively. These openings are also used for applying and removing the wear plate. The lug 2 has a small extension 5 for keeping the wear plate in place. The applied wear plate is indicated by 6 and the top portion fits into a recess ID in the top of the journal box.

The wear plate 6 is shown on the right hand side of the drawings and consists of a top portion 1, side portions 8. The side portion 8 is cut and bent outwardly as at 9.

The wear plate is applied through the front or rear opening of the journal box and raised into place. When the bent portion 9 passes the extension 5 on the lug 2, it springs back and the lower part of the portion 9 engages the top of the extension 5 and is retained in place. The wear plate can be removed by springing the bent portion 9 beyond the extension 5' and lowering the plate.

In the modification of the invention illustrated in Figs. 7 to 12 inclusive, we have illustrated a wear plate which does not require a recess in the top of the journal box, and is held in place by a shallow recess in the side lugs of the box. On

'these drawings, la is the journal box and 2a the side lugs in which the shallow recess referred. to above is indicated by H. 12 is the wear plate which is shown applied, in dot and dash lines, and also in detail in Figs. 10, 11 and 12.

The wear plate I2 consists of a top portion l3 and side portions l4. On the side portions there is an outwardly extending lip I5 which protects the front end of the lug 2a from the wear of the brass lug (not shown). The lip l5 and the outside end of the top portion l3 also act to retain the wear plate in position, the former by its engagement with the lug 2a and the latter by its engagement with the downwardly extending wedge stop lugs 3a of the journal box.

The top portion l3 of the wear plate is cut broadly, we have devised wear plates of hard-- metal for protecting a journal box ofsofter metal against the wear of the journal box wedge and Consequently, in case of a heated bearings. journal or hot-box, thewear plate will aid in dissipating the heat and thusprotect the-softer metal, which in some cases has a relatively low melting point, from extreme heat and possible;

melting.

While we have disclosed what we now "consider to be preferred embodiments of the invention in such manner that the same may be readily understood by those skilled in the'art, we are aware thatchanges may be made in the details disclosed, without departing from the spirit of the invention, as expressed in the claims. 7

What we claim and desire to secure by Letters Patent; is: t t

1. The combination with a journal box formed of relatively soft -metal,-, of a hard metal wear plate in the box for protecting the latter against the wear of the journal box wedge, said wear plate beingformed of resilient metal and held in the journal box by the resiliency of the wear plate.

2. The combination with a journal box formed of relatively soft metal, of a hard metal wear plate in the box for protectingthe latter against the wear'of the journal box wedge, saidwear plate having a flat portion arranged at the top of the journal box andprovidedwith depending legs engaging the internal lugs of the journal box, each leg being formed of resilient metal and having atongue adapted due to the resiliencyof the-legs, to interlock with the, inner surface of the journal box.

3. ,The combinationwith a journal box formed of relatively soft'metal, of ahard resilient metal wear. plate in the box for protecting the latter againstthe wear of the" journal box wedge, said wear plate consisting of a flat top and depending legs, "each leg being cut inwardly from one side edge thereof toprovide a tongue to interlock with a portion of the journal box due to the resiliency of the plate. t

4. The combination with a journal box formed of relatively soft metal, of a hard metal wear plate in the box for protecting the latter. against the wear of the journal box wedge, the inner surface of the top of thejournal box being recessed and the wear plate having a portion seating in said recess and other portions resiliently interlocked withthe interior of the journal box. 5. The combination with a journal box provided with internal side lugs, of a resilient wear plate positioned within the box and having a top portion engaging the inner surface of the top of the box, and legs interlocked with said side" lugs, said wear plate being held in the journal box by the resiliency of the metal of the plate.

6. The combination. with a journal box provided with internal side lugs, of a resilient Wear plate positioned within the box and having a top portion engaging the inner surface of the top of the box, and legs interlocked with said side lugs, each leg having a resilienttongue engaging an inner surface of "thebox, said wear plate being held in the journal box by the resiliency of the metal of the plate.

'7. The combination with a journal box provided with internal side lugs, of a wear resilient plate positioned within the 'box and having a top portion engaging'the inner surface of the top ofthe box, and legs interlocked with said sidelugs, the top of the wear plate having a re- ,silient. tongue engaging a surface of the top of the journal box to prevent axial shifting of the wear plate, said wear plate being held in the journal boxgbythe resiliency'of the metal of the plate. i

8. A wear plate for journal boxes formed of hard resilient metal andhaving a top portion to engage the inner surface of the'top of I the journal box, and depending legs;to engage the internal side lugs of ,aLJ'ournal box, each leg having a struck out tongue to resiliently interlock with a surface of the journal box. I

9. A wearplate for journal boxes formed of hard resilient metal and having a top portion to engage the inner surfaces of the top of the journal box, and depending legs to engage the internal side lugs of the journal box, each leg having a struck out tongue. to resiliently inter.- lock with a surface of the journal box, each leg being L-shaped in horizontal section.

10. A wear plate for journal boxes formed of hard resilient metal and having a top portion to engage the inner surface of-the topof the journal box, and depending legs to engage the internal side lugs of the journal box, each leg having a struck out tongueto resiliently interlockwith a surface of the journalbox, the top of the plate also having a struck out tongue to interlock with the inner surfaces of the top of the journal box.

11. The combination with a journal box formed of relatively soft metal, of a resilient hard metal wear plate in the 'box for, protecting the, latter against the wear of. the journal box wedge,,said wear plate being locally deformed to provide pro jecting edges for engagement with portions of the journal box for retaining'the cover plate in place due to. the resiliency of said plate.

12. The combination. with a journal box formed of relatively soft metal, of a resilient hard metal wear plate in the box for protecting the latter against the wear of the journal box wedge, said I a HARRYH. WOLFE." JOHN s. MCPHERSON.

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