US571666A - Dust-guard for car-axle boxes - Google Patents

Description

H. I. HOLDBRNESS. DUST GUARD PoR GAR AXLE Bums.

No. 571666. @muted Nov. 17, 1896.

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UNITED Sintes HARRY l. HOLDER-NESS, OF PINE BLUFF, ARKANSAS.

DUST-GUARD FOR CAR-AXLE BOXES.

SPECIFICATION forming part of Letters Patent No. 571,666, dated November' 17, 1896.

ipplication filed 3R11@ 26, 1896. Serial No. 597,020. (No model.)

To @ZZ when?, it may concern:

Be it known that I, HARRY l. HoLDEnNnss, a citizen of the United States, residing at Pine Bluff, in the county of Jefferson and State of Arkansas, have invented a new and useful Dust-Guard for Car-Axle Boxes, of which the following is a specification.

The invention relates to improvements in dust-guards for car-axle boxes.

The object of the present invention is to improve the construction of dust-guards for car-axle boxes and to provide a simple, comparatively inexpensive device capable of efn fectually excluding dust from the journalbearing and of preventing the escape and the Waste of a lubricant.

A further object of the invention is to provide a dust-guard which may be readily introduced into an axle-box and removed therefrom, and Which will yieldingly engage the box and an axle to effect a tight joint and to accommodate itself to the vertical movement of the box on the axle.

In the drawings, Figure l is a longitudinal sectional view of an axle-box provided with a dust-guard constructed in accordance with this invention. Fig. 2 is a transverse sectional vievv. Fig. is a detail perspective view of the lower section of the dust-guard. Fig. a is a similar view of the upper section of the dust-guard. Eig. 5 is an enlarged detail sectional view illustrating the manner of mounting the yielding plates of the lower dust-guard section.

Like numerals of reference designate corresponding parts in all the gures of the drawings.

l designates a car-axle box arranged on an axle in the usual manner, and receiving a journal-bearing 3 and a journal-bearing key l, which are interposed between the journal of the axle and the top of the axle-box in the usual manner.

The oar-axle box, which is designed for use on passenger and freight cars, is provided at its rear or inner end with a vertically-disposed dust-gua-rd chamber 5, open at the top and formed by the rear wall of the journalbox, and a transverse partition arranged parallel with the rear Wall, the latter and the partition being provided With openings for the axle 2.

The dust-guard chamber receives a yielding dust-guard, consisting of upper and lower sections G and 7, presenting concave semicircular inner edges to the axle and forming an aXle-openin g and held in close contact with the axle by upper and lower curved springs S and 9.

The dustguard is rectangular to conform to the coniiguration of the dust-guard chamber 5, and the springs S and 9, which are preferably leaf-springs, are centrally secured to the upper and lower edges of the sections 6 and 7 of the dust-guard, and have their terminals disposed substantiallyT horizontally and engaging, respectively, a removable cap l0 andthe bottom of the axle-box. The springs hold the sections closely against the axle to exclude dust from the axle-box and confine the lubricant therein.

The cap, which covers the top of the dustguard chamber, consists of a bar or plate resting upon the axle-boi; and provided at its ends with depending lugs ll, arranged at opposite sides of the axle-box, provided with threaded perforations and receiving clamping-screws l2, which engage the axle-box and retain the cap firmly.

The upper section G of the dust-guard is provided at opposite sides with depending tongues 13, fitting in grooves or recesses 14., formed by the projecting terminals of a pair of curved plates Which are mounted on the body portion of the lower section, and which constitute the upper part thereof. By arranging the tongues 13 in the grooves or recesses la of the lower section the tivo sections are overlapped and no intervening space is formed between them by the vertical movenient of the axle-box on the axle, whereby the dust is effectually excluded at those points.

The curved plates 15, which are semicircular, are connected by transversely-disposed pins 1G, and have springs 17 interposed between them and adapted to spread them and hold them against the adjacent faces of the sides of the dust-guard chamber. The transverse pins are provided at their ends with heads arranged in recesses of the outer faces of the plates 15 to permit the latter to' contract and expand Without the pins coming in contact with the axle-b ox and binding against IOO ille same. The lower or outer curved edges of the plates l5 are recessed and form a vertical groove which receives a curved rib 1S of the body portion of the lower section. The upper edge of the body portion of the lower section'of the dust-guard is semicircular, and is recessed or rabbeted at opposite sides to form the rib 18.

One of the faces of the upper section G of the dustguard is provided with a semicircular recess 19, receiving a semicircular plate 20, which is forced outward by a spiral spring 2l, which is adapted to engage the adjacent wall of the dust-guard chamber.

The yieldinglymounted plates ot" the upper and lower sections of the dust-guard preserve a tight joint between the dust-guard and the axle-box, and eiectually exclude dust and prevent loss of the lubricant.

The upper section 6 of the dust-guard and the curved plates of the lower section may be readily removed from the dust-chamber without removing the axle-box from the axle. Aiter the cap is taken off the upper section may be readily withdrawn from the dustguard chamber, and the plates l5 of the lower section will slide freely around the axle and may be readily taken out by engaging a comm on packing-hook with one of the transverse pins lo'.

It will be seen that the dust-guard is simple and comparatively inexpensive in construction, that it is adapted to be readily applied to the ordinary axle-box, such as is used on passenger and freight trains, and that it etieetually excludes dust from the j ournal-bearing and contines the lubricant within the axle-box.

Changes in the form, proportion, and minor details of construction may be resorted to without departing from the principle or sacricing any of the advantages of this invention.

That I claim is l. A dust-guard for axle-boxes comprising upper and lower sections capable of a limited vertical movement on each other, and the plates yieldingly mounted on the sections, surrounding the axle-opening and capable of springing outward horizontally to engage frictionally the side walls of a dust-guard chamber to effect a tight joint, substantially as described.

2. A dust-guard for axle-boxes, comprising` anupper section and a lower section composed of a lower body portion, and a pair oi' yieldingly-mounted curved plates forming the upper portion of the lower section, presenting curved edges to an axle and adapted to engage yieldingly the side walls of the axle-box, substantially as described.

A dust-guard for axle-boxes, comprising an upper section and a lower section composed of a lower body portion provided at its upper edge with a rib, a pair of curved plates forming a groove for the reception of the rib and constituting the upper portion of the lower section, transverse pins loosely connecting the plates, and means for expanding the plates, substantially as andfor the purpose described.

et. Adust-guard for axle-boxes, comprising` an upper section provided at opposite sides with depending tongues, and a lower section composed of a lower body portion, and a pair of curved plates yieldingly mounted on the body portion and constituting the upper portion of the lower section and receiving the said tongues between their terminals, substantially as described.

5. A dust-guard for axle-boxes, comprising an upper section provided at one of its faces with a recess and havinga yieldingly-mounted plate arranged in the recess and presenting a lower semicircular edge to conform to the configuration of the axle, said upper section beingprovided at opposite sides with depending tongues, and a lower section composed of a lower body portion, and a pair of yieldingly-mounted plates constituting the upper portion of the lower section, adapted to engage the side walls of a dust-guard chamber and receiving said tongues between their terminals, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

HARRY I. HOLDERNESS.

Vitnesses:

V. O. ALEXANDER, E. A. SHEPPARD.

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