US785976A - Dust-guard for journal-boxes. - Google Patents

Description

No. 785,976. PATBNTED MAR. 28. 1905.

J. S. PATTEN.

DUST GUARD FOR JOURNAL BOXES.

APPLICATION FILED MAY 31, 1904.

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UNITED STATES Patented March 28, 1905.

JAMES S. PATTEN, OF BALTIMORE, MARYLAND.

DUST-GUARD F OR JOURNAL-BOXES.

SPECIFICATION forming part of Letters Patent No. 785,976, dated March 28, 1905.

Application filed May 31, 1904. Serial No. 210,560.

To all whom it may concern.-

- Be it known that I, J AMES S. PATTEN, a citizen of the United States, residing at Baltimore city, State of Maryland, have invented certain new and useful Improvements in Dust-Guards for J ournal-Boxes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make an use the same.

My invention relates to improvements in dust-guards for journal-bearings, and relates more especially to guards for the journalbearings of railway-cars, street-cars, or the like, where it is desirable to keep the journalbox partly filled with oil and to prevent the ingress into said box of particles of dust, cinders, or other solid gritty matter.

In most guards as now constructed the guards are formed of two sections adjustable centrally to take up wear.

The principal object of my invention is to make a solid guard practicable by reducing the wear thereon to a minimum.

My invention will be understood after reference t0 the accompanying drawings, in which the same parts are indicated by the same letters throughout the several views.

Figure 1 shows a vertical section through the journal-box in the plane of the axis of the axle, the axle being shown in elevation. Fig. 2 shows a cross-section along the line 2 2 of Fig. 1 and looking in the direction of the arrows. Figs. 3 and 4: are details showing the action of the spring binder and support for the dust-guard. Fig. 5 shows one form of spring binder and support used in the dustguard. Fig. 6 shows another form, and Fig. 7 is a fragmentary central longitudinal section showing another manner of connecting the spring-supports.

Referring first to Figs. 1 to 5, A represents the axle of the car, having the usual skein A, on which rests the brass or bearing block 0 beneath the wedge D, which is supported by the upper part B of the journal-box B. This journal-box may be of any approved type, preferably of the Master (Jar-Builders type, and may be closed by any suitable door B 5 The journal-box is apertured, as at 5 to allow free play to the axle and is provided with the usual recess B having parallel walls 6 and b for the dust-guard E. This dust-guard may be made of any suitable materialsuch as iron, brass, fiber, asbestos, &c.but is preferably made of soft wood having the grain run vertically when the guard is in place, as shown in Fig. 2.

The dust-guard of whatever construction or material seats and rides within the recess B around the axle A, and I provide suitable means cooperating with the dust-guard and the journal-box for holding the former in intimate contact with the face 6 of the recess D and at the same time forming an automatically-adjustable supporting means for the dustguard independently of the axle when moved by the latter into any position. The object of this will hereinafter more fully appear, and any suitable means may be provided looking toward this end. For the purposes of illustration, however, I have shown carried near the upper and lower ends of the guard E resilient wires F (shown in Figs. 1 to 5) or the flat spring F. (Shown in Fig. 6.) Where the wires are used, it will be convenient to insert the same in a groove e (see Fig. 5) and to bend the end f over in a transverse notch 6.

Where a flat spring is used, as shown in Fig. 6, it may be more convenient to insert the spring F in a groove 0 and to bend the end f over beyond the shoulder 0 This spring may be held in place by one or more nails or bolts 0*, or, it is apparent, the construction illustrated in Fig. 7 may be adopted, the wires then passing through the horizontal aperture 6 instead of being set in grooves. In actual construction it may also be advisable to provide a recess or inset for the spring-arms f and f, which will enable guards of uniform thickness to fitexistingtypes of journal-boxes, the recesses of which corresponding to B may be of different widths. The recess may be of any suitable shape or depth, and for the purpose of illustration I have shown the same at e in Fig. 3.

The opening 6 in the dust-guard is made to fit as snugly as practicable over the corresponding portion of the axle, and the effects of the springs f and f will tend to press the dust-guard firmly against the face I) of the recess B thus forming a practically dust-tight closure for the inner end of the journal-box. This will not only prevent the ingress of dust or other gritty matter, but will also prevent the escape of the oil which may be splashed up against the outer face of the dust-guard.

As the journal-box rises or falls the clustguard E will move up or down with the axle; but the spring ends f or f", biting against the wall 6 and pivoting thereon, allows a slight vertical play to the dust-guard Without disturbing the position of the free ends or pivot-points of the spring, as indicated by the full and dotted lines in Figs. 3 and 4. The result of this is that in addition to the dustguard being always kept pressed against the wall 6, forming a snug and effective dust and oil seal for the journal-box, the spring-arms f and f, combined with the friction produced thereby between the dust-guard and the wall 1), form a supporting means for the dust-guard independently of the axle in any position of movement, whereby the only wear on the aperture of the dust-guard is during its sliding movement, it being at all other times held adjustable in perfect alineinent with the axle. This automatic adjustment and independent support of the dust-guard, relatively to the axle of course, also prevents the former from pounding against the latter, as it would do were it left free to move vertically, as is the case with guards at present. It is apparent that this pounding increases wear and is a decided disadvantage. Moreover, it will be noted that the grain of the wood of the dustguard E runs vertically and the wear on the dust-guard is greatest at the top and bottom and least at the sides, so that the greatest strength of the wood to resist wear is opposed to the friction of the axle on the dust-guard. Furthermore, the wood will soon become soaked with oil and will remain well lubricated when in use. Another advantage of having the resilient wire or spring secured across the top and bottom of the wooden dust-guard is that it will largely increase the strength of the dust-guard against splitting and should the guard split will hold it intact.

By the herein-described arrangement there is very little wear on the dust-guard and it will only be necessary to replace it at long intervals, while the dust-guard is highly eflicient in keeping out dust and in keeping in the lubricant, and at the same time it is not likely to split in the direction of the grain of the wood.

I do not mean to confine my invention to any particular form of journal-box or to any particular class or type of rolling-stock, and many changes in the details of construction might be made Without departing from the spirit of my invention; but

What I claim is 1. A dust-guard for use on journal-boxes,

comprisinga single board perforated to snugly lit the axle and provided with grooves at the top and bottom extending laterally thereof substantially the width of said board, in combination with transversely-extending resilient metallic strips let into said grooves and bent over inwardly toward each other at their ends to form resilient arms adapted to engage said journal-box at their extreme ends only for forming a pivotal connection therebetween, substantially as described.

2. A dust-guard for use in journal-boxes comprising a board perforated to fit snugly over the axle, and provided with openings extending laterally of the top and bottom of said board, and inwardly-disposed notches adjacent the ends of said openings, in combination with resilient strips embedded Within said openings, extending longitudinally therethrough and having their ends bent into said notches and projecting inwardly toward each other to form resilient arms adapted to engage said journal-box and form apivotal connection therewith, substantially as described.

3. A dust-guard for use in journal-bearings, comprising a wooden board perforated to fit snugly over theaxle, with grooves in the top and bottom of said board, and notches at the ends of said grooves, and a resilient strip secured in each of said grooves and having its 9 ends bent into said notches and inwardly toward the center of the board to form resilient arms, substantially as described.

4. The combination with a journal-box provided with a recess for the dust-guard, said recess having parallel walls transverse to the axle, of a dust-guard comprising a board perforated to snugly fit the axle and provided with openings extending transversely of the top and bottom thereof, substantially the width of said board, resilient metallic strips embedded in said openings and extending longitudinally therealong and bent upon themselves at their ends to form resilient arms pro jecting inwardly toward each other on the inner face of said board, the said resilient arms hearing at their free ends only against the in side face of one of the walls of said recess for forming a pivotal connection therewith, and pressing said board against the other wall, substantially as described.

5. The combination with ajournal-box provided with a recess for the dust-guard, said recess having parallel walls transverse to the axle, of a dust-guard comprising. a wooden board perforated to snugly fit the axle and provided with grooves at the top and bottom, extending laterally thereof, substantially the width of said board. and transversely-extending resilient metallic strips let into said grooves and bent overinwardly at the ends to form resilient arms, the said resilient arms bearing at their free ends only against the inside face of one of the walls of said recess for forming a pivotal connection therewith, and

I pressing said board against the other wall,

the board to form resilient arms, the said resilient arms bearing against one of the walls of said recess at their free ends only, and pressing said board against the other wall,substantially as described.

In testimony whereof I aflix mysignature 1n presence of two witnesses.

JAMES S, PATTEN.

Witnesses:

A. L. HoUcH, J. STEPHEN GIUs'rA.

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