US1699018A - Bridge-wall construction for furnaces - Google Patents

Description

Jan. 15, 1929. 1,699,018

J. H. PRlvoTT ET AL.

BRIDGE WALL CONSTRUCTION FOR FURNACES Filed Oct. '7, 1927 s 52256? Mza/M s W INVENTORS WTNESS: ATTORNEY Patented Jan. 15, 1929.

UNITED S'iATES PATENT OFFICE.

JOHN H. PRIVOTT AND BILL C. WILLIAMS, OF NORFOLK, VIRGINIA.

BRIDGE-WALL CONSTRUCTION FOR FURNACES.

Application led October 7', 1927.

This invention relates to improvements in furnaces, the general object of the invention being to provide a. bridge wall composed of curved bars removably supported on parts of the wall7 with moans whereby the can be easily removed when damaged and replaced by new ones7 without drawing the tire.

This invention also con Es in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing our invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure l is a vertical sectional view through a portion of the furnace.

Figure 2 is a horizontal sectional view.

Figure 3 is a sectional View through one of the bars.

Figure 4 is a view of the rod used to remove and replace the bars.

Figure 5 is a view of the single bar.

Figure G is a perspective view of one of the double bars.

I? ig. 7 is a view of the supporting member for the lower ends of the grate bars which forms the bridge wall table.

In these views, l indicates the furnace shell and 2 indicates the supporting member for the rear ends of the grate bars 3, this member being the table of the bridge wall and it has two properly spaced holes 2 therein which are located beneath the bridge grates. A. vertically arranged member el, connected with the rear part of member 2, forms another part of the bridge wall and a plurality of curved bars 5 form the rest of t-he wall. These bars have their lower ends resting upon the front portion of member 2 and their rear ends are provided with the wedge shaped notches 6 for receiving the tapered upper edge of the member 4. Thus the bars are firmly supported on the members 2 and l and these bars can be removed whenever necessary or desirable by means of a. long rod 4' which is adapted to be passed through the front of the furnace and have its bent tapered end 8 inserted in a tapered hole 9 formed in each grate bar. The

Serial No. 224,653.

tapered end, entering the tapered hole, will set up a wedging action so that the bar will be connected with the rod and thus the bar can be removed from the furnace by withdrawing the rod. The bars can be placed in the furnace in the same manner.

As shown, the bars 5 are formed double, though the center bar 5 is shown single. Each har is formed with the spacing projections 10 to provide for the passage of air and ashes.

From the foregoing it will be seen that we have formed a bridge wall of horizontally and vertically arranged supporting members and a plurality of curved bars which may be removed when damaged and replaced by new ones, and this without drawing the lire.

The table 2, i h its openings 2, not only acts as a support for the bars 5, but it also permits air to pass from the ash pit through the spaces between the bars and ashes falling through the spaces between the bars will drop tlirongh the spaces 2 in the table into the ash pit.

It is thought from the foregoing description that the advantages and novel features of our invention will be readily apparent.

It is to be understood that we may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

Vhat we claim is In a furnace, a. bridge wall composed of a horizontal part having openings therein and a vertical rear part having its upper edOe beveled and arcuate shaped bars having their lower ends resting on the horizont-al part and their upper ends having wedge shaped notches in their lower faces receiving the beveled upper edge of the vertical part, said horizontal and vertical parts and the bars forming a quadrant shaped space and each bar having a tapered opening at its cenif ter wiereby a tool can be inserted in said opening to lift the bar vertically to free its notched part from the vertical member and then remove the bar from the furnace without y interfering with the fuel in the furnace.

In testimony whereof we aiiiX our signatures.

JOHN H. PRIVOTT. BILL C. VVILLIAMS.

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