US994995A - Annealing-box. - Google Patents

Description

T: B..' G-RAY. ANNEALIEQ BOX. APPLICATION FILED o0T.2o,'1s1o 994 95 I Patented June 13, 191.1.

. m l u in V necting top wall or roof THOMAS B. GRAY, 0F PITTSBURG, PENNSYLVANIA.

ANNEALING-BOX.

Specification of Letters Yatent.

Patented June 13, 1911.

Application filed October 20, 1910. Serial No. 588,124.

To all whom it may concern:

Be it known that I, THOMAS B. GRAY, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and 'State of Pennsylvania, have invented certain new and useful Improvements in Annealing- Boxes, of which the following is a specification.

My invention relates to cast metal annealing boxes and more particularly to those comprising an integral structure. In devices of this kind as heretofore constructed various expedients, of a more or less complicated nature, have been resorted to, to prevent thestructure from becoming distorted or cracked, render it useless, under such articles are necessarily subjected.

The primary object of my invention is to provide a cast metal annealing box which will not be injuriously afliected when subjected to such severe usage and be generally of a much more durable and economical construction than those heretofore employed.

The invention includes a roof an side walls which may expand and contract in any direction without injury, and consists in certain novel features of construction hereinafter fully described and claimed, and illustrated in preferred form in the accompanying drawings, wherein Figural is a side elevation of a cast metal annealing box embodying my improvements. Fig. 2 a plan view of the same. Figs. 3 and i, vertical sections taken on lines TIL-HI and IV-'IV of Fig. 2, and Fig. 5 a horizontal section on line V-V of Fig. l.

As illustrated in its preferred form my device consists of an integral cast metal structure comprising side walls 2 and a con- 3. Walls '2 may be provided with trunnions 4: of any preferred construction, and attheir lower ends with outwardly extending supporting flanges 5.

To permit of the free expansion and contraction of the structure in any direction, each of the side walls and roof consists of a series of outwardly extending bulges 6 and corresponding interior depressions 7 arranged in'parallel rows. Each of the side walls 2 is formed with a series of vertically disposed corrugations 8 arranged in parallel rows and continued across the roof to interintersecting the sect each other at right angles, as shown in Fig. 2. The side walls are also formed with a series of horizontally disposed corrugations 9 arranged in parallel rows intersecting corrugations 8 to provide a wall in accordance with the above description, and the intersection of corrugations 8 upon the roof provides a similar construction therefor.

In order to permit of a still greater amount I of expansion and slope upwardly toward its center, as shown at 10, in Figs. 1, 3 and 4.

The corrugations may be \I-shaped, to give an approximately pyramidal bulge as shown in the drawings or they may be of any preferred contour and arranged at other than right angles to each other without de parting from the nature of my invention and while I have shown my invention in connectionwith an annealing box approximately square in cross section it will be obvious that it is equally applicable to annealthose of any other preferred form.

I claim 1. An annealing box comprising side walls and a roof, the walls and roof each formed with two sets of corrugations extending across them in rows, one set of corrugations other set thereon at an angle to form outwardly extending bulges and corresponding interior depressions.

2. An annealing box comprising side walls and a roof, the walls and roof each formed with two sets of corrugations extending across them in parallel rows, one set of corrugations intersect'ng the other-set thereon at right angles.

contraction the roof may ing boxes having cylindrical side walls or 3. An annealing box comprising side walls and a roof, the walls and roof each formed with two sets of V-shaped corrugations extending across them in parallel rows, one-set of corrugations intersecting thereon at right an ice.

4. An annealing ox walls and a roof comprisin an. ntegral structure, the walls and mo each formed with two sets of corrugations extending across them in parallel rows, one set of corrugations intersecting the other set thereon at approximately right angles 5. An annealing'box and a roof, thereof sloping upwardly tecomprising side walls the other :set

consisting of side ward its center, the Walls and roof each formed with two sets of corrugations extending across them in parallel rows, one set of corrugations intersecting the other set at an angle to form outwardly extending bulges and corresponding interior depresr SlOIlS.

THOMAS B. GRAY.

Witnesses:

CHAS. I. MOORE, F. E. GAITHER.

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