US280347A

US280347A - Journal-bearing

Info

Publication number: US280347A
Authority: US
Publication date: 1883-07-03
Anticipated expiration: 1900-07-03

Description

i No. 280,347.

Patented July 3, 1883.

dat

INVENTOR,

.//rf ff BY Quim. ATTORNEY.

WIVTNESSES UNITED STATES PATENT OFFICE.

vFRANK R. CARGILL, OF CHICAGO, ILLINOIS.

JOURNAL-BEARING.

SPECIFICATION forming part o'f Letters Patent No. 280,347, dated July s, 188e. Application sled April 17, lees. (No modeml ml'o LZZ vwhom, t may concern:

Be it known that I, FRANK It. CARGILL, of

' Chicago, coullty of Cook, and State of Illinois,

have illvented a new and useful Inlprovement in Journal-Bearings, of which the following is a speciflcation, reference being had to the accompanyillg drawings, illustrating the inlprovelnent, in which- Figure I is a perspective representation of a half bearing or shell elnbodying nly improvement Fig. II, a transverse section thereof cutting the strengthening-rib, Fig. III, eFlvcenItral sectional longitudinal elevatioll of The object of the present illvelltion .is to provide a shell journal bearing or box which shall be of suitable strellgth and retain the soft or anti-friction metal entirely within rims or projections, and at the same time have the soft metal cover the strellgthenillg-rib.

It has formerly been the custom to line journal-bearings with soft or anti-friction metal,

. alld also to run or cast the Inetal in a matrix made in a sinlple form ill the shell traversed by strengtheningribs. Various forms are shown ill the following patents: The patent to John Sweeney, No. 199,699, shows a box cast round a dovetail rib, with the anti-friction lnetal cast on the inside of the box and over the rib; but the soft lnetal conles flush' -with the ends ofthe box, and as a result ill practice the soft metal will be swaged endwise, forming sharp edges, which will cut the shoulders of the journals. The patent to B. J. Downs, No. 236,560, shows a box lnore llearly like the one sought to be patellted than any of which I have knowledge, but the strengthelling-rib oomes'even with the curved ribs at the ends of the box, and if only the nlatrices are to be filled with soft metal the central rib will at all times come in contact with the jourllal. This is a serious objection in the construction of boxes, inaslnuch as there are two separations between the hard and soft metal, very near the central main bearing-point of the journal and longitudinally with its axis. The point of objection is, the soft lnetal is swaged over the rib at any time the box gets hot, unless the bearing is on the rib, in which case the soft metal is of but little use. I obviate these objections by means of abox whose matrix is about twice the depth at the edges of the rib as at the lnargins of the box,and employing a rib which projects up from the matrix about one-half of the celltral'depth of the matrix, and then solder the anti-friction metal to the matrix and to the rib, and bringing the said lnetal flush with ,the curved ribs at-the ends ofthe shell-box. By this means the holes sh own through the shell ill Patent No. 236, 560 are obviated, and the liability of breakage therefrom removed; and at thesalne time I have a ribbed lllatrix filled with a single sheet of llletal blltting against flanges, both at the ends alld sides of the box. It is this special collstruotioll which I clailll to have invented, alld ask therefor apatent. It is observed that these boxes are designed to be used for the better class of lnacllinery, and, being ill shell fornl alld light, they are nlade of strong, tough metal, good cast-brass being suitable.

A represents the sllell of olle-half of a box, which is formed with two matrices, A, side flanges, D D, end flanges, BB, and a strengthellillg-rib, S, extending from flange B to B, but is only about olle-half so thick as the depth of the matrix at the edges of the rib S. This i shell has soft or anti-friction Inet-al soldered ill the shell-cavityto fill the same flusll with the face of -the flanges B, coverillg the rib S, as sllown at Fig. II, by a single sheet of m tal.

rIhe especial purpose of inclosing all the box Illetal proper within the shell is that such used by the applicant is very soft, much lnore so than the ordinary Babbitt llletal, alld unless the soft metal be wll olly illclosed with ribs at the central faces the action of the journal will draw it ollt ill thin-cut sheets, which, by the action of the oiler, are returned, and cut the box. Ill this respect Illy box differs from the journal bearing patented to De XV. C. Clough on June 23, 1874, inasmuch as in his the soft llletal conles in fllll-widtll sheet to the IOO The depth of the matrix at the anges D is the anges B, and the cavity of the shell lled ro shown at E. with soft anti-friction metal C, soldered in to I claim as neW- Colne flush with the flanges D B, cover the rib A journal shell-box constructed with two S, and be nelosed Wholly between the Hang-es, 5rn1atriees, A, deeper at the edges of the ee11 as speeied, and for the purpose set forth.

tral rib than at the anges D, and inolosed by FRANK R. CARGILL. side and end anges, D B, and provided with Witnesses a strengthening-rib, S, lying in the center of ADoLF HEILL, the shell between the matrices A and below G. L. CHAPIN.