US463132A - Sled-shoe - Google Patents

Description

(No Model.)

W. E. ANDERSON.

SLED SHOE No. 463,132. Patented Nov. 1'7, 1891-.

UNITED STATES PATENT OFFICE..

lVlLLIAM E. ANDERSON, OF FREVSBURG, NEW YORK.

SLED-SHOE.

SPECIFICATION forming part of Letters Patent No. 463,132, dated November 17, 1891.

pplication filed T une 1 189 l i To aZZ whom, t may concern.-

Beit known. that I, WILLIAM E. ANDERSON, a citizen of the United States, residing at Frewsburg, county of Chautauqua, State of New York, have invented certain new and useful Improvements in Sled-Shoes, of which the followingis such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

In the use of metallic `sled-shoes of a brittle nature a serious drawback is the liability of the shoe to crack and fall to pieces, thereby rendering it worthless.

The principal object of my invention is to so re-enforce and strengthen this class of shoes as to render it less liable to break, and in case it should become broken to hold the parts togetherin such a way that the shoe may still be used and allowed to perform its work.

A further object of my invention is to so cast and form the shoe that it may be readily attached to the sled-runner.

To these ends my invention consists in the certain novel and peculiar arrangements and combinations of the several parts of the device and in the method of making the shoe, all as hereinafter fully described,`"and then pointed out in the claim.

I have illustrated my improved sled-shoe in the accompanying drawings, wherein- Figure 1 is a perspective view of the shoe detached. Fig. 2 is a sectional view of the same, the section being taken on a central vertical plane. Fig. 3 is a perspective view of the re-enforce or strengthening bar detached from the shoe and with the tapering castingplugs set therein.

Referring to the drawings, in which like numbers of reference designate like parts throughout, 6 designates the sled-shoe, which I preferably make solid and of cast-iron, though of course other suitable material may be used instead. The shoe is formed long and narrow with its ends slightly rounded, the forward end at theleft hand of the views being curved slightly upward, in the usual manner, to permitthe shoe to slide easily on the surface over which it may be drawn. It

Serial No. 396,310. (No model.)

may. of course be made in any desired shape or size, according to the requirements.

A re-enforce or core piece 7, which is made of a strong non-brittle or tough material, such as steel, is embedded in the shoe 6 and is disposed longitudinally thereof, extending nearly from end to end of the` same, as indicated in the drawings. This re-enforce maybe of any preferred and suitable shape and size, the purpose of its use being to strengthen the more brittle metal of which the shoe is made,

and, in the event of the shoe being broken in pieces, to hold the pieces firmly together, so that the shoe may be preserved in operative form and continue to be used as though it were not cracked or broken. In the construction shown the re-enforce bar 7 is a iiat strip or plate of steel of the shape shown, and the perforations 8 S, which extend vertically through the shoe and by means of which it is attached to the sled-runner, pass through the strip, so that boththe shoe and strip are held by the attaching device when applied to the runner. The re-enforce 7 extends a little 'short of the ends of the shoe, so as to be just concealed atthe ends, and the shoe is cast with the re-enforce embedded therein and the attaching-perforations 8 8 ready for use in the following novel manner: The re-enforce 7 and the tapering casting-plugs 9 9 being placed in proper position in the mold, the position being such as they are to assume in the finished shoe, the molten iron is poured into the mold and the shoe cast, the plugs 9 9 being knocked out as soon as the iron has cooled sufficiently. Thus the completed shoe is formed with its re enforce and conicallyshaped perforations 8 8, ready to be attached to the bottom of the runner in the usual manner. The 're-enforce bar 7 is first formed in the desired shape from steel, and, with the openings lO 10 and the casting-plug 9 9, are set in the openings, as shown in Fig. 3. These parts are then set in the mold and the shoe cast around them. The perforations S 8 may be more or less in number than shown, and the re-enforce may be made lighter or heavier, as desired; but the latter must be sufficiently solid to iirmly hold the partsv of the shoe together when it accidentally breaks.

The important advantages of the invention ICO cracked into many pieces and still be heldl strung` together on the re enforce Or core piece 7.

Having thus described my improvements in sled-shoes, what I claim as my invention, and desire to secure by Letters Patent, is-

As a new article of manufacture, a cast-iron sled-shoe cast with Vertical perforations S 8 for receiving the attaching-bolts, and having' Va fiat steel or Wrought-iron core Or re-enforce bar '7, cast longitudinally within the body of 15 In testimony whereof I have hereunto set 2o my hand, this 11th day of June, '1891, in the presence of two subscribing` Witnesses.

'WILLIAM E. ANDERSON. Witnesses:

OLOF A. OLSON, AXEL FR. JOHNSON.

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