US184808A - Improvement in car-axle boxes - Google Patents

Description

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Specication forming part of Letters Patent No. 1/LsdadatedNovember .11876; application tiled :.september9,1s7o.- v ,-f

To all whom 'it may-concern:

Beit known that I, OWEN ToMLrNsoN, of Bombay, East Indies, have invented a new and Improved Gar-Axle Box, of which the following is a specification:

In the accompanying drawing, Figure l represents a vertical longitudinal section of my improved car-axle box, taken on line :v so, Fig. 2. Fig. 2 is a vertical transverse section of the same on line y y, Fig. l; and Figs. 3 and 4 are detail side views 0f the washers, with side springs, arranged to fit the axle to keep out the dust.

Similar letters of reference indicate corresponding parts.

The invention relates to certain improvements in car-axle boxes designed to eiect a thorough lubrication thereof; and it consists in the construction and arrangement of parts, hereinafter more fully described, and then pointed out in the claim.

In the drawing, A represents an axle-box, which may be cast in two parts, that are horizontally connected by outer side flanges and bolts, or cast in one piece, with a detachable rear section, as described. The axle-box is supplied with oil through a movable front cap or face plate, B, that is attached by a suitable packing-ring and fastening-screws. The car-axle G has suitable collars at both ends ot' its journal, between which a journalv bearing, D, of corresponding shape is placed,

and retained by an iron keep, E, that is fitted into the top part of the axle-box in such a manner as to perfectly secure the brass or other bearing D in" its proper place, and also admit the withdrawing of the bearing and ready replacing of it at a saving of time and labor. The keep or retaining-plate E holds the journal-bearing D by a dovetail or other connection against a change of position in lateral direction, and by pressing against a projecting rear shoulder, a, of the bearing in longitudinal direction. The keep or retainingplate E is steadily held in position by means of a stop-shoulder, b, of the top part of the axle-box entering a recess of the keep, and by an angular cheek or bearing, d, of the faceplate pressing against the forward-extendin g handle end of the keep. Lubricating-padsF, of suitable material, are arranged at both sides offthe',journal-'boering irland `supplied,with

oil by capillary attraction from the oil-receptacle and base-pad at the lower part of the box. The required amount of oil to moisten the side pads for action may be supplied by top recesses and side holes of the keep, as shown in Fig. 2. The side packings and sustaining-cheeks are mainly designed to take up the surplus lubricating material by capillary attraction, and retain it for the economical feeding to the journal and journal-box. As the oil fills up the lower oil-space, it is supplied in considerable quantity to the axle, and the side packing serves to regulate the supply and make the same uniform. The required amount of oil, and not more, is thereby supplied,'which makes the box very economical.

The lubricating-pads F are securely held in position on the journal of the axle at bothsides of the bearing D by the ironkeep and projections or cheeks e at both sides of the axle-box. The pads insure thorough lubrication of the journal without necessitating a too frequent refilling of the axle-box. The bottom pad F1 is retained by perforated longitudinal side and bottom plates F2, and pressed up by suitable springs F3, placed into the pad on the axle. The oil is fed from the oil-receptacle through the perforated plates to the bottom pad, and, by capillary attraction along the revolving axle, to the side pads and to the journal-bearing. The rear part of the axle-box A is closed by means of wooden or other washers G, that are placed into a rear chamber or receptacle, G', of the axle-box. A central tongue, f, at the lower part of the chamber G fits into a slot or groove, f', of the washer, which is made in two pieces, iitted together with single lap-joint. The sections of the washer are made to maintain a thorough lit on the axle by means of a small steel spring, g, that is affixed to the outer edge of each half of the washer, and intended to keep the washer-sections pressed gently, but continually, against the axle, the springs being compressed by the side walls of the axle-box. The wooden washer is provided at the lap-joint with a certain clearance or allowance, for admitting, with the wearing of the washer, the gradual closing up of the sections by the action of the springs, while preserving atallV timesa close 'seating on the axle,` so as to keep out impurities "that "tend'to' cltand Wear out the journal. The brass bearing is readily changed by taking off the movable cap or face plate, slackening the side bolts 'that' hold the top and bottom castings together, inserting theminto the joint suitable packing-1 pieces of steel or iron, and lifting, by a screwjack, the axle-box. The iron keep or .top plate is thereby liberated, and may be rai-sed clear` of the collar of the axle by the handle end` and drawn out, after whichthe defective brass bearing maybe removed and another snbsti-i tuted, the 'iron keep replaced, and the aXlebox tightened up' again. When the shell of` the axle-box is cast in one piece, the faceplateisfirst retrieved, `the Vrearitittngfg-p'ieces l and washers-are taken o?, and theMaXle-boxis then raised Jbyfa .serewjach and the ybearing changed, as before described.

Hafvjin g thus described myinvention, I claim Aas new and desire to secure by Letters Patent y y Y Vrlh'eeo'nbi'neiti'on 'of "the box A, 'having the internal side cheeks e, and the lubricating-pads F, with the detachable keep E and bearing D,

as and for the pnlrpose'set forth.

OWEN momLrnsoN.

Witnesses:

GEORGE WILLIAM NORTH, Radcliffe Road, Hilchn. CHARLES ARNOLD,

Radcliff: ARoarLH'cl071ml

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