USRE7800E - Improvement in car-axle boxes - Google Patents

Description

ol TOMLINSON. CAR-AXLE Box.

Reissud J'u1y17, 1877.

UNITED STATES PATENT OF ICE.

owns T-OMLINSQN, 'B BAY, INDIA.

IMPROVEMENT m cAR-AxL's-soxEs.

Specification forming part of Letters Patent No. 184,808 dated November 28,1876; :Reissue lid 7,801 dated July 17, 1877; application filed April 27, 1877.

' To all whomit may cancerou [Fe-it known that-I, Owns Tommsou, of Bombay, East Indies, have invented .a new and Improved Oar-Axle Box, of which the foltowing is a specification:

In the accompanying drawings, Figure 1 -represents avertieal longitudinal section of 'myimproved car-axle box taken on line a: m, Fig. 2. Fig.2 is a vertical transverse section of the same on line y 3 Fig. 1; and Figs; 3 'and 4 are detail side views of the washers,

. with side springs arranged to [it the axle to keep out the dust. I 7

Similar letters of reference indicate corre sponding parts.

.The invention relates'to certain improvements in car axIe boxes designed to sheet a thorough lubrication thereof; and it consists in the construction and arrangement of parts hereinafter more fully described, and then pointed out in the claims. 7

In the drawing, A represents an axle-box, which is preferably cast in two parts that are horizontally connected by outside flanges and bolts; or it may be cast in one piece, with a detachable rear section, as described.

The axle-box is supplied with oil at-a movable front cap or face-plate, B, that is pro-.

vided with a suitable packing and fasteningscrews.

The car-axle O has suitable collars at both .ends of its journal, between which a journalbearing, 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 ud ready replacing of it at a saving of time and labor. The keep or retaining-plate E is connected with the journal-bearing D by a dovetail or similar connection against a change of position in a lateral direction, and by pressing against a projecting rear .shoulder, a, of the bearing in longitudinal direction.

The keep or retaining-plate E is steadily held in position by a stop-shoulder, b, on the inside of the top pf the axle-box, entering a recess of the keep,'and by an angular cheek or hearing, d, of 'the face plate pressing against the forward-extending handle end of the keep.

Lubricating-pads F are continuous the entire'length of the bearing-surface of the'jonrnah-or nearly so. These pads are'ni'ade of suitable material, and arranged at both sides of the journal-bearing D, and supplied with oil by capillary attraction from the oil-receptacle and base-pad at the lower part of the box.

The required amount of oilto moisten the side pads for action maybe supplied? by'top recesses and side holes of the keep, s shown in Fig. 2. The side packings' and's tain'ingcheeks are mainly designed to take up the surplus lubricating material by capillary. at-

' traction, and-retain it for the economical feeding to the journal and journal-box, As the oil fills up' the lower oil-space, it issupplied 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 perforated sidev plates extend up to the journal, or nearly so, to support the pad.

The lubricating-pads F are. securely held in position on the journal of the-axle at both sides of the bearing D by the iron keep and projections or cheeks e at both .sides of the axle-box.

The pads insure thorough lubrication of the journal without necessitating a too frequentrefilling of the axle-box. The bottom pad 1'" is retained'by perforated longitudinal side and bottom plates F, and pressed up against the axle by suitable springs I! placed intov the case of the pad.

The oil is fed from the oil-receptacle through the perforatedplates to the bottom pad, and, by capillary attraction along the revolving axle, to the side pads and to'the journal-bearing.

The rear part ofthe axle-box A is closed by means of wooden or other dust-plates or washers G that are-placed into a rear chamber or receptacle, G, of the axle-box. A central partition, f, at the lower part of the chamber G, fits into a deep channel or groove, f of the washer, which is made in two pieces fitted together with alap'joint. The'sectionsot' the washer are made to maintain a thorough -flt on the axle by being pressed toward each other by a spring, g, that is affixed, to the outer edge ofeach half of the washer, and intended to keep the washer-sections pressed gently, but continuously, against the axle, the springs acting between the dust-plates and the side walls of the axle-box. These dustplates are provided at the lap'joints with a certain clearance or allowance for admitting, with the wearing of the washer, the gradual closing upof the sections by the action of the springs, while preserving at all times a close seating on the axle, so as to keep out impurities that tend to cut and wear dot the journal.

If the brass bearing D is to be removed the capplate B is taken off, the bolts loosened, the bottom half of the axle-box lowered, rods or keys inserted between the upper and lower sections, and the box raised by a jack or lever; then the keep E and bearing D can be easily withdrawn, and another bearing, D,-iutroduced with the keep. The axle-box can be made'smaller and more compact when in two pieces than when cast in one, because the parts can be separated to give the space required for removal of the keep and bearing, and'there is no risk of oil running out because the joint is above the oil level, and, the top part of the axle-box sets within the bottom part.

In consequence of the partition f rising higher than the inner face of the axle-box adjacent to the journal, oil will not flow out of the first oil-receptacle by any undulation of the oil, and this partition and the deep groove of the dust-plates G insure the exclusion of nearly so, of'the bearing-surface, substantially as set forth.

2. The dust-plate G,made with a deep channel across its lower edge, in combination with the axle-box having the oil-receptacles that are separated by the partition f, substantially as and for the purposes set forth. v

3.- In an axle-box, the combination of the checks 6, lubricating-pads F, detachable keep E, and bearing D, substantially as and for the purposes set forth. v

4: The removable keep E, having a dovetailed recess, in combination with the bearing D fitting into such recess, so that the two can be removed together, as specified.

Signed by me this 3d day of March, A. D.

OWEN TOMLINSON.

Witnesses: 2

- JAMES H. CRAWLEY BOEVEY,

BABWAO SUOOARLEM,

Olerk'to JlIessrs. Ormqfordd: Boevey.

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