US1992932A - Anchor - Google Patents

Description

March 5, 1935.

J. E. ANDERSON v ANCHOR Filed Oct. 23, 1935 l ,ly, the thin edges of the material, particularly ad- Patented Mar. 5, 1935 aren't Omar ANCHOR,

John E. Anderson, Chicago, 111., assignor to Plibrico Jointless Firebrick Company, Chicago, 7

111., a corporation of Application October 23,

6 Claims.

5 struction, Serial "No. 591,245,11led January 5, v1932,

I have disclosed a furnace arch construction comprising a of refractory material supported by anchorsembedded inthernass, these anchors being of approximately pyramidal form and having considerable upward taper. While the anchors of my copending application have-proved to be highly eflicient in use with various kinds of refractory, when ananchor of this construction is employed with refractory material which is unusually brittle or has a tendency to break readijacent the top of the anchor, are apt to crack and break away. Also, with an anchor having smooth surfaces with a considerable upward inclination, there is a wedging effect exerted by the anchor on the suspended mass of refractory which, under unfavorable conditions, may tend to cause cracking of the mass.

The instant invention is in the nature of an improvement over the anchor disclosed in my above identified copending application. One of the main objects of my invention is to provide an anchor which avoids the formation of thin edges in the mass of the refractory, such as would be apt to result in cracking and breaking away of the refractory. A further object is to provide an anchor which has but slight taper and, when in use, has interlocking engagement with the mass in such manner as to support the latter effectively by means of rounded elements of adequate crosssection and mechanical strength while avoiding appreciable wedging action such as might tend to cause cracking of the mass of refractory. Further objects and advantages of my invention will appear from the detail description.

In the drawing Figure 1 is a perspective view of an anchor embodying my invention;

Figure 2 is an end view of the anchor;

Figure 3 is a plan view of the anchor;

Figure 4 is a fragmentary sectional view through a furnace arch structure and an anchor embodying my invention applied thereto.

The anchor of my invention comprises a neck 1 of rectangular shape in plan, provided with spaced transverse apertures 2, and a body 3 depending fI'OITl the neck and also of rectangular shape in plan, this body being of greater extent than the neck. The body 3 tapers upward toward the neck, the lateral taper of the body being Illinois 1933, Serial No; 694,737 (01. 72-101 slight and the lengthwise taper of the body being relatively great. Body 3 is provided, at each side thereof, witha rounded rib or projection 4, extending lengthwise of the bodyjand with rounded grooves 5 and 6 extending from theprojection 5 4 to the base of the body and to a rounded shoulder lwhich merges into the neck at the side thereof. It willbe noted that the grooves 5 and 6 merge into the rib or projection 4 and the shoulder 7 and define therewithrounded corrugations 10 of appreciable cross-section, The oodyis fur ther provided, at each end of the base thereof, with a terminal element 8, which is untapered upward and is of considerable vertical thickness so as to possess sufficient mechanical strength for 5 supporting the load imposed thereon. Preferably, the anchor is formed of refractory the same as that of the mass which is to be supported'bythe anchor, and is baked or fired to the re uisitegdegree of hardness. 20 InFig'ure l I have'shown an anchor embodying my invention as used in a furnace arch structure comprising supporting I beams a and a mass of refractory 'r. In constructing the arch, a plurality of suitably spaced anchors are supported by means of rods I) inserted through one of the openings 2 of the respective anchors, these rods resting loosely upon the lower flanges I of the I beams a and providing rollers which accommodate movement of the anchors lengthwise of the beams to accommodate expansion and contraction of the refractory mass r, it being noted that the anchors are also freely slidable lengthwise of the respective rods for the same purpose. A suitable form is disposed beneath a the anchors and the spaces between the anchors are then filled in with refractory material in a plastic condition, which is tightly packed between the anchors so as to provide rounded ribs 9 of considerable cross-section which fit tightly into the grooves 5 and 6 of the respective anchors, and cooperate with the projections 4 and the lateral base portions of the anchors for supporting the refractory mass. In this manner, the refractory mass is provided with rounded ribs which interlock with the projections of the anchors for supporting the mass while avoiding the formation of thin edges such as might result in cracking and breaking away of the refractory. The end elements 8 at the base of the anchor avoid the formation of thin edges in the refractory and possess ample mechanical strength to support the load imposed on these elements. It will be noted that the lengthwise taper of the anchor, even though materially greater than to avoid subjecting the suspended mass of refractory to wedging action of sufficient extent to tend tocause cracking of the mass. In applying the anchor, the supporting rods b may be inserted through either of the two superposed apertures 2, thus providing convenient means for vertical adjustment of the anchor, when initially applied, to suit requirements.

What I claim is:-

1. As a new article of manufacture, an anchor for use in supporting masses of refractory and the like, said anchor being formed of refractory material and comprising a neck and a body depending therefrom, said body tapering in length and width toward the neck with the taper in length greater than the taper in width, the body being provided at the sides thereof 'with spaced lengthwise projections transversely.

rounded and defining rounded rooves of considerable width for reception of the material of the mass to be supported. a

2; As a new article of manufacture, an anchor for use in supporting masses of refractory and the like, said anchor being formed of re- 'fractory material and comprising a neck and a body depending therefrom, said body tapering in length toward the neck and being provided at it's sides with spaced lengthwise projections of considerable width, said projections being transversely rounded and defining rounded grooves for reception of the material of the mass to be supported, said grooves being substantially equal in width to the projections.

3. As a new article of manufacture, an anchor'for use in supporting masses of refractory and the like, said anchor comprising a neck of approximately rectangular shape in plan and a body depending from the neck and of approximately rectangular shape in plan, the body being of greater extent in plan than the neck and tapering upward toward the latter with the lengthwise taper of the body greater than its transverse taper, said body being provided at the sidesthereof with rounded projections extending lengthwise of the body and having, at the ends of its base, untapered terminal elements of appreciable vertical thickness.

5. As a new article of manufacture, a refractory anchor for use in'supporting masses of refractory and the like, said anchor comprising a neck provided with a plurality of vertically spaced transverse apertures, and a body'depending from said neck, said apertures being spaced outward beyond the body.

6. In combination, supporting means, a refractory anchor suspended from said means and comprising a body tapering toward the supporting means, and a mass of refractory initially applied ina plastic condition and surrounding the anchor, said anchor being provided with rounded grooves of considerable width and said mass being forced into said grooves and forming interengaging elements of rounded cross-section, said elements cooperating with the anchor to support the mass by means of the anchor.

JOHN E. ANDERSON.

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