US324528A - Combined iron and steel pile - Google Patents

Description

(No Model.)

E. S. BRAINARD.

GOMBINED IRON' AND STEEL FILE.

QDWWRMXM N. PETERS. PhnkrLithogmphur. Washinglon, D. c.

NITED STATES EDIVIN S. BRAINARD, OF MANCHESTER, CONNECTICUT.

COMBINED IRON AND STEEL PILE.

SPECIFICATION forming part of Letters Patent No. 324,528, dated August 18, 1885.

Application filed January 30, 1885. (No model.)

To all whom it may concern.-

Be it known that I, EDWIN S. BRAINARD, of Manchester, in the county of Hartford and State of Connecticut, have invented a certain new and useful Improvement in the Manufacture of Composite Metal Bars, of which the following is a description, reference being made to the accompanying drawings, where Figure 1 is a side view of a piece of tubular covering used in the practice of my invention. Fig. 2 is an end view of the same. Fig. 3 is a view in longitudinal central section of my improved pile, showing the ends closed by screw-plugs. Fig. 4 is a detail view in longitudinal section of a piece of one end of a similar pile closed by heading the tube over the plug.

My invention relates to the artof forming composite metal bars, in the practice of which the different kinds of metal used in the bar are placed together to form a pile or fagot;

and my invention consists in the improved pile, by which new and useful results are obtained in the making of a composite metal bar having a steel center.

My invention is herein described and illustrated with particular reference to its application to the making of steel-centered bars with softer metal, as iron, as acovering, the bars being intended to be used in the making of a peculiar centered calk for horseshoes.

The within-described pile orfagot is similar to but an improvement on the one forming the subjectanatter of a pending application for a patent filed by me January 12, 1885, and the advantages gained by the use of the herein-described improvement are of the same nature as those described in the above-named application, the finished bar being produced with the steel core exactly in the center and continuous from end to end of the bar, anda great waste of material saved.

In the accompanying drawings, the letter (t denotes a length of iron tubing of a kind common in the market,and preferably of iron lap welded. This is of course cylindrical in crosssection, but any other regular outline may-be used. In the center bore, b, of this tube a piece of steel wire, a, somewhat less in length than the tube, is thrust, and both ends of the tube closed by means of the threaded plugs d, which are screwed firmly into the threaded sockets in the ends of the tube.

Instead of securing the plugs (l by means of the screw-thread, I may close the end of the tube upon the plug, as shown in. Fig. 4, with substantially the same results,so far as the pre venting the burning of the steel in heating the pile is concerned. The pile thus formed does not require to be broken down by a special kind of rolls, as is the case where a pile of scraps of irregular outline is used, but it may be rolled down to any desired diameter by the ordinary grooved roll, after having first been subjected to a single heat.

A great difficulty arising from a use of the irregular rolls in breaking down a fagot or pile of scraps of several pieces is due to the fact that where the pile is pinched it is apt to tear the steel central part, and the bar when completed will have no continuous center of steel, but one made up of lengths more or less separated.

For the particular use for which I make such bars this forms a strong objection, as the, absence of the steel center deprives the horseshoe-call: of the special and peculiar feature desiredthat is, its self-sharpening feature.

I claim as my invention 1. As an improved article of manufacture, the within-described pile or fagot, composed of a tubular-jacket of substantially regular out line in cross-section, a central portion of another kind of metal, and having both ends of the tube securely closed by plugs or the like, all substantially as described.

2. As an improved article of manufacture, a fagot or pile composed of a lap-welded tube of iron havng a steel center and closed at the ends by plugs of metal, all substantially as described.

EDIVIN S. BRAINARD.

Vvitnesses:

CHAS. L. BURDETT, H. R. WILLIAMs.

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