US1788494A - Journal-box dust guard - Google Patents

Description

Jan. 13, 1931. c, RlPLEY 1,788,494

JOURNAL BOX DUST GUARD Filed Feb. 26. 1927 Patented Jan. 13, 1931 UNITED STATES PATENT OFFICE CHARLES T. BIPLEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO 8. .2 '1. METAL COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS JOURNAL-BOX DUST GUARD Application filed February 26, 1927. Serial No. 171,227.

My invention relates to a dust guard for railway journal boxes designed to surround and be supported by the axle to prevent dust, cinders, and the like, from entering the inner or rear opening in the box. Heretofore these devices have been made of multiple-ply veneer wood, or of fibrous material, ordinarily, but when made of such materials are unsatisfactory because they wear rapidly, are

in juriously affected by moisture and oil, are likely to be broken or injured in shipment or when put into place in the journal box, and are not heavy enough so that, as they wear, they will be certain to move'down and bear on the upper surface of the axle, it being important that the gap between the guard and axle, if any gap there be, should be at the bottom rather than at the top since any opening at the under side of the journal is closed, more or less, against ingress of dust by the packing in the box.

The object of my invention is to provide a new and improved all metal journal box dust guard of such composition that the axle will not be scored and wear on the guard will be reduced to a minimum; which will be heavy enough to insure contact of the guardwith the upper surface of the axle, when wear occurs, and at the same time will be light enough to avoid friction and unnecessary wear; and which will, in addition, be strong, more durable than the common wood or fibre guards and entirely unaffected by moisture and oil.

The invention is illustrated in certain preferred embodiments in the accompanying drawing, in which Fig. 1 is a longitudinal sectional view of a journal box and axle provided with the dust guard of my invention,

Fig. 2 is a side view of the dust guard, with a part thereof in section,

- Figs. 3 and 4 are cross sections on 33 and 44, respectively,

Fig. 5 is a fragmentary view in perspective of the anti-friction metal ring forming part of the guard; and

Fig. 6 is a vertical sectional view of a modified embodiment of the invention.

Referring first to Figs. 1 to 5 of the drawline ing 10 designates a journal box of common construction, 11 an axle, and 12 its journal. The brass is indicated at 13 and the wedge at 14. The journal box is formed with the usual groove 15 for the dust guard.

The dust guard consists of a relativel thin plate and a thicker ring adapted to\c osely fit the axle at the shouldered part 16. The ring is made of any suitable anti-friction metal and the plate may be made of the same material, either integrally therewith. or separated therefrom, or of wood or fibre, but in the form of the invention shown in Figs. 1 to 5, for reasons of strength, durability and general utility, of sheet steel. The sheet steel plate designated 17 is preferably formed with a peripheral flange 18 for the purpose of holding the guard in proper place in the groove 15. The ring designated 19 is secured in any suitable manner in the central orifice of the sheet metal element and is preferably thicker, in a radial direction, at the top of the ring than at the bottom so as to provide excess metal at the top for wear while minimizing cost and weight. In order to hold the ring from rotation in the sheet metal element the latter is notched as indicated at 20, 20 and the ring formed with projections 21, 21 to fit into these notches. The ring is formed with a flange 22 against which the inner edge of the sheet metal element bears, the ring being united with the sheet metal element preferably by upsetting, although the ring may also be die cast on the sheet metal element.

' In respect to these details, and other modifications obvious to those skilled in the art, I wish it to be understood that I propose to cover by patent all changes within the scope of the appended claim. 90

By making the dust guard of sheet metal and anti-friction metal, as described, the device is heavy enough so that when wear takes place it will slide down in its groove so as to maintain contact with the upper side of the axle. At the same time the sheet metal body of the guard makes it light enough so that friction between the axle and the guard is not excessive. If the guard were made wholly of anti-friction metal of thickness corresponding to the dust guard groove, it would be too heavy, besides which the cost would be excessive. However, it will be possible to make the device wholly of a suitable antifriction metal, provided such metal is relatively tough, and this form of the invention is shown in Fig. 6 in which the device consists of a thin plate 23 having spacing lugs 24, 24 at its outer edge, in place of the flange of the previously described form of the invention, orificed at 25 and formed around said orifice with an integral ring 26 the upper portion of which has a radlal dimenslon greater than the lower portion as shown. A suitable anti-friction metal for the purpose is composed of proportions as follows:

Per cent Calcium Magnesium 0. 1 Aluminum 0. 02 to 0. 1 Tin 1 to 2 Sodium 0. 6 toO. 8

Balance lead.

I claim: 7

A journal box dust-guard comprising a sheet metal eleme'nthavmg a width substantially equal to that of the pocket of the journal box and having an outer peripheral flange substantially as wide as the thickness of the pocket so that the guard will substantially fit the pocket in the journal box and be restricted to vertical movement only, the element having an orifice, and a ring of antifriction metal adapted to surround the journal, the ring being radially thicker in its upper portion than in its lower portion, the inner periphery of the sheet metal element being embedded in the rin CHARLE T. RIPLEY.

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