US1793031A - Brick for furnace arches of the suspended type and the arch formed thereby - Google Patents

Description

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BB1 CK FOR FURNACE ARCHES OF THE SUSPENDED TYPE AND THE ARCH FORMED THEREBY Filed March 31, 1928 Patented Feb. 17, 1931 V UNITED STATES PATENT OFFICE LOUIS S. TRACHSEL, OF FRANKLIN, PENNSYLVANIA BRICK r03. rumucn enemas on THE susrmmnn urn AND 'rnn ARCH roam THEBEBY Application filed March 31, 1928. Serial No. 266,824.

The objects of this invention are, to provide a brick for the purpose above specified which is simple, comparatively inexpensive and easy to manufacture; which may be easily and quickly assembled to form the required arch; that will dispense with the necessity of employing skilled labor for such assembly; and the construction of the resulting arch will be such that it may be easily and quickly repaired, or renewed in whole or in part.

The form and construction of my improved brick and the method of using same are fully described in the following specification and illustrated in the accompanying drawings in which:

Fig. 1 is a. face view of the preferred form of my improved brick,

Fig. 2 is an edge view of same,

Fig. 3 is an edge view, partly in section, of four of my improved bricks forming an assembly group such as is generally used. in the construction of a furnace arch,

Fig. 4 is a face view of my improved brick, showing, in their proper positions and relation, the associated construction-members whereby the brick is built or formed into a furnace arch of the suspended type,

Fig. 5 is a transverse section through one side wall of a furnace and indicates the method of constructing and applying an arch, composed of my improved bricks.

My improved brick is a substantially rectangular block 1 composed of refractory material; the upper corners thereof may be transversely chamfered as at 2, 2 for a purpose which will presently appear. One or both side faces of said brick, at the upper end thereof is/are provided with a clearance, depression or pocket 3, the purpose of which is to afford suitable space for the housing or reception of a suspension hook 4 by means of which the various units and the assembled arch are carried in their service ition.

The body of said brick, at sai depression, or clearance, is pierced through to provide an eye 5 for the passage therethrough of an assembly-rod 6. It has been found desirable in actual practice to employ an assembly rod of suflicient length to carry four bricks, assembled in the relation and relative position indicated in Fig. 5, thus forming what is termed an assembly unit. When the bricks are arranged in this manner, the amemblyrod 6 is inserted throu h their respective eyes,and engaged by thefiower hook 7 of the suspension rod 4; a supporting bar 9 is rigidl and securely fixed above the furnace wal s and extends thereacross. The u per hook 8 of said rod 4 is engaged with said bar 9. The

- entire arch of the furnace is built up in this manner of the required number of courses, or in any suitable or desired modification thereof.

It will be evident to those skilled in the art of furnace construction that a. full course of bricks could be strung upon one eye-rod that would be long enough to'extend across the furnace, but such an arrangement would not aiford the facility of renewal, repair and replacement, that said shorter rod and smaller number of bricks afiords.

After the arch has been fully assembled the grooves formed in its upper face by the chamfered corners 2, 2 may be filled with fire-clay or other suitable refractory material.

The foregoing descri tion relates to the original construction 0 a furnace arch or roof, but my improved brick has special advantages in respect to the matter of making repairs to arches and roofs which have been in use sufiicientl long to be in need of repairs. Said special vantages reside in the fact that, for the metal elements of my construction, only common commercial round steel rod, such as is commonly ke t in stock by almost any industrial establishment is used; this material may be cut to any desired or required length; because of this arepair unit consisting of one, two, three or-any desired number of bricks may be used. In making repairs to furnace arches it often occurs that the bricks have become permanently distorted in some respect, and for this reason, in replacin removed bricks, the same number of bric s can not be reinserted as were removed; also occasionally, owing to either a slight spreading or a convergence of the walls of the furnace, one more or one less brick is required than was originally used.

By cutting an assembly rod to a corresponding length, any number of my fire bricks may be used as an assembly unit; or if it becomes necessary to use one brick in making repairs, a correspondingly short rod, 6, may be employed, and two suspension hooks be used to suspend it, in which case the F ig, 2 form of brick is employed.

A particular advantage of my improved brick lies in the fact that its faces whlcn are in contact in an assembly unit, are flat, lane faces whereby a brick of uniform thic ness throughout its length is produced, so that the hanger pockets formed in said faces are closed on all sides except at the top, and the hanger hook is thus protected from the direct action of the flame and heat until the brick is consumed to within a shorter distance from the hook than has heretofore been possible. I claim the following:

1. A furnace arch composed of a plurality of bricks of identical construction each of which is a rectangular block having in its side face adjacent the top edge thereof a pocket or housing for the reception of one end of a suspension book, there being an eye extending through said brick at said housing, an assembly rod extending through said eye of a plurality of said brick and across the pockets thereof whereby an assembly unit is formed, a supporting bar extending across the combustion chamber of the furnace and a suspension hook one end of which engages said rod within one of said pockets of said unit and the other end thereof in engagement with said supporting bar.

2. A furnace arch composed of a plurality of assembly units each of which units is made up of a plurality of rectangular bricks each of identical form and having adjacent the top edge and at both sides thereof a pocket or housing for occupancy of one end of asuspension hook, there being an eye extending through said brick at said housings, an assembly rod extending through said eye of and adapted to carry a plurality of said bricks whereby an assembly unit is formed, a supporting bar extending across the combustion chamber of said furnace, and a suspension hook one end of which engages an assembly rod within a pocket of one of said units and the other end thereof engages said supporting bar.

3. A brick for furnace arches of the suspended type consisting of a refractory body of uniform thickness throughout its extent, provided with one or more pockets at its upper end for the reception of the hook of a suspension rod, said pockets having such horizontal dimensions as are sufficient only for the reception of said hooks, and an eye piercing said body at said pockets, for the purpose specified.

In testimony whereof I affix my signature.

LOUIS S. TRACHSEL.

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