US363204A - brown - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

H. BROWN.

JOURNAL BEARING.

No. 363,204. Patented. May 17, 1887.

WITWESSES' 2 Sheets-Sheet 2.

H. BROWN.

JOURNAL BEARING.

(No Model.)

,204. Patentedlflay 17,1887.

UNITED STATES PATENT HENRY BROWN, OF COLUMBUS, OHIO OAROTHERS AND JOSEPH P. J

JOURNAL- BEARING.

CPECIFICATION forming part of Letters Patent No. 363,204, dated May 17, 1187.

Application filed December 9, 1886. Scriat No. 221,053. (No model.)

To all whom it 121 concern.-

Be it known that I, HENRY BROWN, of Columbus, in the county of Franklin and State of Ohio,haveinvented certain new and useful Improvements in Journal-Bearings; andldo hereby declare that the following is a t'ull,clear, and exact description of the invention, which will enable others skilled in the art. to which it appertains to make and use the same,relercnee being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention relates to journal-bearings, especially locomotive or similar bearings, which, when originally ornewl-y construct-ed, are each provided with a small groove'in its inner surface, with which communication is had with its outer surface by means of spruclioles, through which Babbitt or other metal alloy isponred to fillsaid groove to the level of the interior surface. As is well known, these brasses or bearings soon wear on their inner surfaces, becoming thus too large to properly fit the journals they support, and are consequently worthless, or, at least, only fit for the melting pot. V

The objectof my invent ion is to enable these brasses to be renewed, as it were, or utilized again and again for their original purpose, thus effecting great economy in their use.

My invention consists in the reconstructed or renewed journal-bearing hereinafter fully described, and specifically pointed out in the claim.

In the drawings, Figure 1 is a perspective view showing the interior of a journal-bearing reconstructed or rendered capable of again being used according to my invention. Fig. 2 is a transverse vertical section therethrongh. Fig. 3 is a plan view of the same, and Fig. 4 is a plan view of the same in a slightly-modified form. Fig. 5 is a cross-section of the bearing, showing it in the process ofhaving the grooves or cavities filled with new metal for the renewed bearing.

Like letters of reference mark the sameparts wherever they occur in the various figures of the drawings.

Referring to the drawings by letters of reference, A is the bearing, whose inner surface,

journal (represented by dotted lines at a in Fig. 2) which it is to support, or, technically speaking, of the same set as the journal. I) is a groove formed in the inner surface of the journal-box when it is cast, (originally) from the bottom of which sprneholcs 0 lead to the outer surface of the brass or hearing. This groove, through the medium of the holes 0, is filled with molten Babbitt metal or other metal alloy to the level of the inner surface, which is, as before stated,shown by the dotted lines at a in Fi 2.

After the hearing has been used for some time the interior surface wears away and its interior curvature no longer coincides with the exterior curvature of the journal, and consequently, having becomeloosc, itis no longer fit for use as a bearing. The Babbitt metal or other alloy being fusible at a much lower temperature than the brass, the portion thereof remaining in the groove I) may be melted out, leaving a worthless brass. This I propose to renovate or restore to utility by my invention, as follows: I cut in it a dovetail or other undercut groove, as shown at d c, the portions (1 and e of said groove being longitudinally of the bearing, and also other parts transverse thereto, thus forming in effect a continuous groove havingfoursidcstwolongitudinal and two transverse. I then cast in said grooves, pouring in through sprue-holes in the bearing communicating with the grooves, as in Fig. 5, or in the end of the longitudinal grooves d or e, which may be extended to the end of the brass for that purpose, as shown at h in Fig. 1, Babbitt metal or other suitable metal alloy, forming a rib, in arectangular form, as shown at ej"g,projecting inward beyond the worn interior surface, and slightly beyond the original interior line ofthe brass when new, said rib being shaped in asuitable mold, upon which the old brass is placed, as in Fig. 5, while casting. \Vhen cool, this brass, having the rib, as before stated, is taken from the mold and the interior surface of the rib trued to the curvature of the journal which it is to bear. The old brass is now ready for use, and is in as good if not bet ter condition than it was originally.

The space included within the rib at 6'1 9 acts as a reservoir for a lubricant, and thebearwhen new, is of the exact curvature of the ing will be equally as good and perfectly operating as it was originally, and will lasta much longer time and be more perfectly lubricated at all times.

The expense attending the renovation or reutilization'of these old brasses is insignificant, and no speciallyskilled labor is necessary to properly perform the operatiomwhile, as readily seen, the saving will be immense. The old brasses can be again and again renovated, the groove being cleared of Babbitt metal, &c., after each wearing down, by melting it out,

. when it can again be filled and the brass again used.

The rib may be of a modified shape, cast in Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

The brass for journal-boxes herein described, provided with a continuous undercut groove consisting of two longitudinal and two transverse portions, and the continuous rib cast in said groove and projecting therefrom beyond the interior worn surface of the brass,whereby is formed a new bearing and a lubricant-reservoir, as set forth.

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

HENRY BROWN.

Witnesses -O. P. L. BUTLER, J r.,

M. B. EARNHART.

Images