US3236507A

US3236507A - Skid rail

Info

Publication number: US3236507A
Application number: US356504A
Authority: US
Inventors: Robert T Mckie
Original assignee: United States Steel Corp
Current assignee: United States Steel Corp
Priority date: 1964-04-01
Filing date: 1964-04-01
Publication date: 1966-02-22
Anticipated expiration: 1983-02-22

Description

R. T. M KIE Feb. 22, 1966 SKID RAIL Filed April l, 1964 /VVE/VTOR ROBERT 7? Mek/E By W Amar/rey United States Patent O 3,236,507 SKID RAIL Robert T. McKie, Bessemer, Mich., assignor to United States Steel Corporation, a corpo'ation of Delaware Filed Apr. 1, 1964, Ser. No. 356,504 2 Claims. (Cl. 263-6) This invention relates to an improved skid rail for supporting work in a furnace or the like.

An object of the invention is to provide an improved skid rail of simple Construction which limits the quantity of heat transferred from a hot body, thus reducing the problem of cold Spots" on the work.

A further object is to provide an improved skid rail which offers the foregoing advantages and is made up of standard commercial shapes available in many sizes, whereby a rail of proper size can be made up inexpensively for any application.

A further object is to provide an improved skid rail which presents a large area of bearing surface to its support and offers high stability to rotational forces perpendicular to its major axis.

In the drawing, the single figure is a vertical crosssectional View of my improved skid rail.

My skid rail comprises a relatively wide channel 16, a structural T 12, and a wear bead 13. The base of the channel rests on a supporting wall 14 within a furnace or the like, and the flanges extend upwardly from the base. The T is inverted and its base is welded to the fianges of the channel, as indicated at 15. The stem of the T extends upwardly, and the bead is formed along its upper edge. The bead is of a heat and wear resistant alloy, such as the cobalt-chronium-tungsten alloy sold under the trademark Stellite Work W to be heated in the furnace rests on the bead. Refractory insulation 16 covers the channel and T, leaving only the bead exposed. Cooling fluid 17 flows through the rectangular space between the channel and the base of the T. The furnaoe has one or more similar skid rails (not shown) lying parallel to the rail illustrated.

I can select a structural T 12 which has a stem length to provide any desired temperature at the surface of the bead 13 within a reasonable range. Transfer of heat from the work to the cooling fluid is limited by the width of the exposed bead, thel ength of the T stem, and the thickness of insulation 16. The wide flat base provided by the web of hcannel dstributes the hearing load properly without necessity of special cast supports or ties required for skid rails formed of round pipes. The broad 3,236,507 Patented Feb. 22, 1966 base also furnishes stability against lateral forces which tend to overturn the skid rod.

While I have shown and described only a single embodiment of my invention, it is apparent that modifications 'may arise. Therefore, I do not wish to be limited to the disclosure set forth but only by the scope of the appended claims.

I claim:

1. A skid rail comprising a channel formed of a base and a pair of flanges extending upwardly from opposite edges of said base and having :an open top between said flanges, a structural T formed of a base welded near its side edges to the upper edges of said flanges and a stem extending upwardly from said second-named base, and a bead of heat and wear resistant alloy formed along the upper edge of said stern for engaging work, the space bounded by the fianges and base of said channel and the base of said T being of rectangular cross section and providing a passage for cooling fluid, the base of said channel being relatively wide to provide a large bearing surface and promote stability against lateral forces.

2. In a furnace which has a horizontal supporting wall, the combination therewth ot a skid rail comprising a channel formed of a base resting on said Wall and a pair of flanges extending upwardly from opposite edges of said base and having an open top between said flanges, a structural T formed of a base welded near its side edges to the upper edges of said fianges and a stem extending upwardly from said second-named base, a bead of heat and wear resistant alloy formed along the upper edge of said stem for engaging work, and refractory insulation covering said channel and said T leaving only said bead exposed, the space bounded by the fianges and base of said channel and the base of said T being of rectangular cross section and providing a passage for cooling fluid, the base of said channel being relatively wide to provide a large hearing surface and promote stability against lateral forces` OTHER REFERENCES Huttenwerk, German printed application No. 1,094,778, January 1957.

WILLIAM F. O`DEA, Acting Prmary Exam'ne'. JOHN J. CAMBY, Exaninr,

Claims

1. A SKID RAIL COMPRISING A CHANNEL FORMED OF A BASE AND A PAIR OF FLANGES EXTENDING UPWARDLY FROM OPPOSITE EDGES OF SAID BASE AND HAVING AN OPEN TOP BETWEEEN SAID FLANGES, A STRUCTURAL T FORMED OF A BASE WELDED NEAR ITS SIDE EDGES OF THE UPPER EDGES OF SAID FLANGES AND A STEM EXTENDING UPWARDLY FROM SAID SECOND-NAMED BASE, AND A BEAD OF HEAT AND WEAR RESISTANT ALLOY FORMED ALONG THE UPPER EDGE OF SAID STEM FOR ENGAGING WORK, THE SPACE BOUNDED BY THE FLANGES AND BASE OF SAID CHANNEL AND THE BASE OF SAID T BEING OF RECTANGULAR CROSS SECTION AND PROVIDING A PASSAGE FOR COOLING FLUID, THE BASE OF SAID CHANNEL BEING RELATIVELY WIDE TO PROVIDE A LARGE BEARING SURFACE AND PROMOTE STABILITY AGAINST LATERAL FORCES.