US436525A - Roller for feed-tables - Google Patents

Description

(No Model.) Y

W. A. HEMPHILL. ROLLER FOR PEBDJTABLBS. Y No. 486,525. Patented Sept. 16, 1890.

F'I GJ.

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WITNESSES UNITnn STATES PATENT rrrcn.

WILLIAM A. H EMPHILL, OF PITTSBURG, PENNSYLVANIA.

ROLLER FOR FEED-TABLES.

BFECIFICATION forming part of Letters '.Patent No. 436,525, dated September 16, 1890.

Application filed June 19, 1890. Serial No. 355,924. (No model.)

To a/ZZ whom it may concern.-

Be it known that LWILLIAM A. IIEMPHILL, a citizen of the United States, residing ai' Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discoveredl a certain new and useful Improvement in Rollers for Feed-Tables, of which improvement the following is a specification.

The invention described herein relates to certain improvements in that class of rollers employed in the feed-tables of rolling-mills and for other analogous purposes.

The object of this invention is to so construct" these rollers that they shall be not only light and durable, but also permit of a considerable reduction iu the labor and cost n? manufacturing Ithem; and in general terms.: the invention consists in the construction and arrangement of parts, all as more fully hereinafter described and claimed.

In the accompanying drawings, forming a partof this specification, Figures l and 2 are sectional elevations illustrative of the construction of such rollers heretofore in vogue. Figs. 3 and 4 are sectional and side elevations of my improved roller; and Fig. 5 is a transverse section of the same, the plane of section being indicated by the line wm, Fig. 3.

These rollers have heretofore been constructed in many ways, the methods generally employed being illustrated in Figs. l and 2.

As illustrated in Fig. 1, the roller consists of ascast-iron shell l, having heads 2 2a formed integral therewith. As cast-iron is easily fractured, it has been necessary to employ a wrought-iron and steel shaft 3, passing through suitable openings in the heads 2, and as these rollers are generally driven, the opening in one of the heads, as 2, is made square in contour for thereception of asimilarly-shaped portion on the shaft 3, therehy locking the roller and shaft together as against independent rotation.- As will be readily understood, this fitting of the shaft and the opening in the head involved considerable labor and added materially to the cost of production, and, further, the body of the roller being formed, as stated, of cast-iron, is easily broken by the heavy loads to which it is subjected. The next step in the development of the artis illustrated in Fig. 2, wherein the roller is shown as consisting of a wrought-iron shell riveted to anges formed on cast-iron heads and a Wrought-iron or steel shaft secured in the heads, as hereinbclore described. While the wrought-iron shell rendered these rollers much more durable, the labor and cost of manufacturing them were greater than in the former case. In order to overcome these objections as to durability and cost of production, I form the roller with its end journals ot' steel, by casting in a suitably-constructed mold.

As shown in Fig. 3, the roller consists of the shell l, provided with heads 2 at its opposite ends, said heads being in the form of central hubs provided with radiating arms connecting the hubs and the shell, as shown in Fig. 5, and the journals 4 at each en d of the shell are formed integral with the hubs.

After the-'roller has been removed from the' mold it is only necessary to remove the core, which can be readily done through the openings between the arms connecting thehubs and shell, face olr the exterior of the shell, and turn down the journals. These operations require but little skill and can be easily and readily effected. The rollers thus constructed of caststeel can, by reason of the tenacity of the material employed, be made much lighter as regards the thickness of the shell and the arms my hand.

WILLIAM A. HEMPHILL. Vtitnesses:

R. H. Wnrrrnnsnr, DARWIN S. WoLcor'r.

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