US 1331961 A
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APPLICATION mso Aue.21; |918.
1 33 1 ,96 1 Patented Feb. 24, 1920.
UNITED STATES PATENT OFFICE.
WILLIAM KLOCKE, OF WOODHAVEN, NEW YORK, ASSIGNOR TO PRESSED BEARING COMPANY, INC., 0F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.
Specification of Letters Patent.
Patented Feb. 24, 1920.
To all whom t may concern:
Be it known that I, WILLIAM KLooKE, a citizen of the United States of America, residing in Woodhaven, iny the borough and county of Queens and State of New York, have invented certain new and useful Improvements in Lined Bearings, of which the following is a specification.
This invention relates to lined bearings, and is in the nature of an improvement over the method and product of my ap lication filed May 31, 1916, Serial No. 100,8 4.
' The general purpose of my improvementis to enable forming a lined bearing by rolling the lining, or softer metal, onto the body or harder metal, asI distinguished'from flowing or casting processes, and in a manner which permits of establishing a firm positive anchor for the lining metal, by an interlocking connection between the sheets.
The diliiculty of attaining such an Objectv cut or overhanging portions. While this ar- 'rangement afforded a more or less tight connection, it was not a secure bond, owingto the absence of any interlocking joint, for which a dove-tailed or overhanging portion would be'required.
According to my present invention, the metal body is provided with a multiplicity of projections, preferably small, although possibly otherwise constructed, and each having parallel sides. Thus, where the projection is circular, it would -be a portion of a cylinder, and where it is fashioned after a rib, it would be of rectangular formation, the essential characteristic being that the side walls maintain an approximate parallel relationship, the spaces between the projections being of complementary form, and likewisehaving parallel sides. Thus there is presented no overhanging or undercutl portion, and it is readily possible to roll a soft lining metal, such as Babbitt metal, onto the body and have it entirely fill the spaces between the projections mentioned. According to the preferred method of operation, a thin coating of soldering material is interposed between the sheets of lining and body metal, and this serves to unite the two parts when subjected to heat and pressure according to the method described in my previous application, although the soldering step is not indispensable to carrying out the purposes of this invention, and may in some cases be omitted.
The strip of lining metal is rolled onto the strip of body metal preferably while heated, and while the steps referred to above will serve to unite these strips after a fashion, they will not be secured by an interlocking bond until subjected to a further operation which results in impartin the final curve, of preferably cylindrical orm, to the bearin This is accomplished by pressing the llned bearing to the required curvature, after the lining metal has been affixed to the body metal by rolling it. The iinal operation of pressin the bearing to cylindrical form results 1n bringing the outer ends of the .projections closer to ether,
the body metal being harder than the ining,
and imparting a corresponding taper or dovetailed shape to the spaces between the projections, and likewise to the lining metalin these spaces. The sides of each projection will remain always parallel to each other, but the different projections will assume a generally radial relationship with reference to the imaginary center of the bearing. This causes the spaces between two adjacent projections to be narrowed toward the outermost ends of the projections, densifying the lining metal still further at such point, and thereby effecting a tight mechanical grip upon the lining metal.
To these and other ends the invention consists in certain improvements and combinations of .parts as will be hereinafter more fully described and pointed out in the claims at the end of the specification.
Figure 1 is a sectional view, illustrating the relation of the body and linin metal after they have been rolled toget er in the initial operation.
Fig. 2 is a sectional view, showing the same parts after being subjected to pressure .modification in which the projections take the form of cylindrical pins.
Fig. 7 is a perspective view, partly in section, showing a completed cylindricalv bear- Fig. 8 is a perspective view, partially in section, of a completed semi-cylindrical bearin In the present disclosure which is to be considered as an example, or possible embodiment, and not as a necessary or limiting arrangement, A desi nates the hard metal forming the body while B is the soft or linin iii-etal. The body A carries a multiplicity of projections C which engage the f soft metal during thel initial rolling opand it will be seen that this bendin eration, and cause it to be forced into the spaces between the projections. The body metal A and lining metal B are preferably in the form' of strips which are applied together and rolled into engagement with each other by the application of heat and pressure, according to the method described in my application above -referred to. It is preferable t0 apply to one of the adjacent surfaces a coating of soldering material which l acts as a binder between the metal parts, and
assists in their union. The solder is particularly desirable 'for obtaining a close union between the molecules of the adjacent surfaces at every. point, although not essential to producing an interlocking bond between the two parts of the bearing. f The opposite sides of each projection C are parallel to each other, as indicated by D and E, and likewise the spaces between the projections are bounded by parallel surfaces. This arrangement makes it possible to easily roll the so'ft lining metal onto the body metal, and completely fill all of thel space between the different projections. The lined bearing is then subjected to a pressin operation, which brings it to a curved form, preferably semi-circular, as Shown in Fig. 2, i operation causes a change of contour of t e space between each two projections. The space referred to is narrowed at its outermost end, caused by the approach toward each other of adjacent projections. In other words,
j when the lined bearing is bent to semicircular form, the outer ends of the projections are closer together than their inner or base portions, so that while the sides 0f .which permits o each projection retain their original parallel ribs, either at right angles or diagonal withl reference to the sides of the strip, as shown in Figs. 3 and 4 respectively. In another modification, they may be square, assuming the form of rectangular pins, or again they inay be round in' the nature of cylindrical pins. In any of these suggested modifications, it will be understood that the projecting portions are formed integral with the hard 4metal body, and that the opposite'sides of each projection are parallel to each other. In other words, the sides of the projections extend at right angles to the adjacentv surfaces of the body, of which they form an integral part. Such a lined bearin may be formed into complete cylindrical siape, as shown in Fig. 7,- or it may be cut to semicylindrical shape as in Fig. 8. In the latter, the lining is shown ,as provided with end flanges F extending into corresponding rabv also causing adove-tailed or interlocking engagement between the body and the lining when the parts are -bent to semi-circular form. This dove-tailed or overhanging portion need not necessarily be extreme, but is sufficient to provide a positive interlocking bond, which will prevent separation of the lining from the body, irrespective of .whether there is a soldered union between It will be understood that v them or not. other changes in the invention may be made without departing from the underlying features of the improvement and the scope of the following claims.
'What I claim is :f-
1. The process of making lined bearings, consisting in forming a series of projections on a metal blank, each of the projections having op osite sides arranged in a proximate para lelism, applying a sheet o linin metal to said blank, subjecting the line blank to pressure, and pressing the lined blank into curved shape.
2. The process of making lined bearings, consisting in forming on a metal blank a multiplicity of projections having a form rolling a lining metal into engagement therewith when flat and interlocks with the lining metal when bent, applying a sheet of lining metal to the blank by pressure, and pressing the lined blank into curved form.
2%. The process of making lined bearings, consisting in forming a metal blank to have a series of projections therein with the opposite sides ofeach projection approximately parallel, applying a sheet of lining metal to the blank with soldering material upon one of the adjacent faces, applying pressure to the lined blank to force the lin ing metal between said projections, and' pressing the lined blank to curved shape thereby forming tapering spaces between the projections and anchoring the lining metal.
l. A curved lined bearing consisting of a curved metal body and a curved lining metal interlocked to the body by a series of projections on the, body, the opposite sides of each of said projections being parallel.
5. A curved lined bearing consisting of a curved metal body and a curved lining metal interlocked with the body by a series of projections on the body, the opposite sides of said projections being approximately parallel, and the opposite Walls of the spaces between the recesses having converging relationship, resulting in an nterlocking connection between the body and lining.
6. A curved lined bearing consisting of a curved metal body and a curved lining metal interlocked by a plurality of projections on the body having engagement with the lining, each of said projections having its opposite sides arranged in approximate parallelism to each other.
7. A curved lined bearing consisting of a curved metal body and a curved lining metal coextensive with the adjacent surface projectionson the body having engagement. with the lining, and a soldering material interposed between the body and the lining.
9. A curved lined bearing comprising a metal body having a multiplicity of projections with their opposite sides in approximate parallelism, the spaces,between the projections having a dovetailed form, and a sheet of lining metal interlocked by said dovetailed spaces.
In witness whereof I have hereunto signed my naine."