US1911862A - Tuyere block - Google Patents

Description

A. WATHEY May 30, 1933.

TUYERE BLOCK Filed June 26,

Patented May 30, 1933 PTEN ARTHUR WATHEY, OF LAKEVJ'OOD, OHIO TUYEBE BLOCK Application filed June 28,

This invention relates to improvements in tuyere blocks such as are adapted to be arranged in inclined tiers for supporting fuel and for admitting air to the fuel bed of a stoker.

One of the objects of the invention is the provision of a block of this character which may be cast with facility and which shall be capable of withstanding high heats without burning out.

A further object is the provision of a depending rim upon, the forward edge of the block through which the tuyere openings are caused to extend, and from which the P081 tioning hook depends.

Another object is the arrangement of the tuyere openings with their forward ends depressed somewhat so as to direct the air onto the upper surface of the block next below.

Other objects and features of novelty Wlll appear as I proceed with the description of that embodiment of the invention which, for the purposes of the present application, I have illustrated in the accompanying draw ing, in which Figure l is a bottom plan view of a tuyere block embodying the invention.

Fig. 2 is a front edge View of the same.

Fig. 3 is a bottom perspective view of the block, and

Fig. 4 is a side elevational view, partly in longitudinal section, showing several blocks in the positions which they take relatively when assembled in a stoker.

In tuyere blocks of the general nature of that illustrated in the accompanying drawing, wherein each block is provided at its forward end with a depending hook which takes into a vertical opening in the block next beneath for the purpose of properly positioning and holding the various blocks relatively to each other, I have found that the necessity for replacement of blocks results generally from a burning out of the nose of the block. This difficulty is overcome in the present invention in two ways, first by causing one of the tuyere openings to pass through the block directly above the hook, being equivalent in fact to an opening formed 50 through the hook itself. The air thus di- 1930. Serial No. 463,973.

rected through the mid portion of the nose of the block serves to cool the same and prevent burning. Secondly, the tuyere openings ar ranged throughout the nose of the block are deflected downwardly, so that the air passingthrough these openings is directed onto the upper surface of the block next beneath, having a consequent cooling effect. The nose of each block is therefore cooled both from above and below. 9

In the drawing, the block is shown as embodying an upper plate-like portion 10 which is of substantially equal thickness through out and is flat through the major portion of its extent but may be tapered downwardlyto 5 a slight extent at its forward end as indicated at 11.

At the nose of the block there is a depend ing rim portion 12, which extends rearwardly on each side approximately one-fourth Z9 the length of the block. In it are formed a series of horizontally arranged slots 13, the central one extending directly forward, and those on either side extending somewhat laterally as well as forward. These slots. are 31. all deflected downwardly to a slight degree, as indicated in Fig. 4. I Depending from the rim portion 12 and formed integrally therewith is a hook 194 which is positioned in the middle of, the block directly below the central'one of the slots 13. When the blocks are assembled .in a stoker each hook 14 takes into a vertical opening 15 in the block nextbeneath. The opening 15 is preferably surrounded by a reenforcing rib 16 which extends. down wardly from the plate portion 10.

Behind the rim 12 on either side of the block I form a series of ribs 17, inclined outwardly toward the front, so as to provide 9 forwardly and outwardly extending air passages, and behind these ribs on either side of the block is a ledge 18 of the same height or depth as the ribs 17 and rim 12. These ledges are beveled off at 19. lVhen the blocks are assembled in a stoker the beveled edges 19 form a substantially continuous surface which is adapted to rest upon supporting ribs in the stoker frame (not shown). A

As an additional positioning and holding 55 means, I may provide a tongue 20 extending downwardly from the lower surface of the plate portion 10 midway between the sides of the block, this projection being adapted to take into a hole 21 near the rear of the plate portion 10 of the block next beneath.

The tuyere openings 13, being horizontal slots, provide the maximum possible air passages, and since they extend directly through the nose of the block instead of being positioned along the upper surface or lower surface thereof, they enable the air to effect the greatest possible cooling of the block nose. The construction is also such that the cooling of the nose is not interrupted at the mid portion thereof by the positioning hook 142. The inclined portion 11 of the nose of each block is therefore cooled by air passing through the block directly below it and also by air directed onto its upper surface by the tuyere openings of the block next above.

While in the foregoing description and in the accompanying drawing I have disclosed more or less in detail one particular embodiment of the invention, I desire it to be understood that such detail disclosure has been resorted to primarily for the purpose of fully illustrating the invention in accordance with the requirements of the statute, and that it is no to be construed as amounting to any limitation upon the scope of the invention.

Having thus described my invention, I claim:

1. A tuyere block having a thickened nose portion provided with a tuyere hole extending therethrough centrally from front to rear, and a centrally positioned hook extending downwardly from said thickened nose portion, said lock having an opening therethrough behind said nose portion adapted to receive the hook of the block next above.

2. A tuyere block having a thickned nose portion, and an integral hook extending downwardly from said thickened nose portion, said nose portion having a tuyere holeextending therethrough directly above said hook, and said block having an opening therethrough behind said nose portion adapted to receive the hook of the block next above.

In testimony whereof, I hereunto afiix my signature.

ARTHUR WATHEY.

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