US1751395A - Fire bar - Google Patents

Description

Patented Mar. 18, 1930 STATES UNHTE GEORGE HENRY COLLINS, OF BRENTFORD, ENGLAND i -FIRE' BAR Application filed April 4, 1927, Serial No. 180,843, and in Great Britain April 16, 1926'.

- part or bar proper with vertical ribs on each side.

According to the present invention, the vertical ribs are tapered from back to front and extend for a portion or the whole depth of the bar, the tapering commencing at a point below the upper surface of the bar and ex- I tending to the lower ends of the ribs.

One form of fire bar in accordance with the invention will now be described with reference to the accompanying drawings in which Fig. 1 is a side elevation;

Fig. 2 is a plan; I

Fig. 3 is a side elevation of a portion of a bar to an enlarged scale; and

Fig. 4 is a section on the line AB of Fig. 3.

The centre body part 1 has a plurality of vertical evenly spaced ribs 2 on each side extending outwardly therefrom and from the top to the bottom of the bar, those on one side being staggered in relation to those on the other side. The sides 3 of the ribs are inclined so that the spaces 4 between adja-' cent ribs are of gradually increasing cross sectional area from the top to the bottom. The slots 4 at the top face of the bar are narrower than the ribs 2 so that each slot is sealed and isolated from the other slots by a rib on an adjacent bar. Each of the ribs 2 is tapered from the top towards the bottom, as shown at 5, the tapering commencing a short distance below the top face as shown so that short vertical sides 6 are provided. From a point below the top face of the bar the ribs are further tapered from the back adjacent the central body part 1 to the front as shown at 7, 7, the tapering extending to the lower ends of the ribs. At each end the bar is provided with shoulders 8 and it is of exactly the same shape at each end so that it maybe reversed in the furnace if required. The bottom edge 9 of the bar is of usual form, namely, curved so that it has a greater depth in the middle than at the ends.

The top face 10 of the bar may be fiat, convex or concave.

Though the bar shown in the drawings is of the same shape at each end it will be understood that the ends may be of any shape re quired in any particular furnace.

What Iclaim is 1. A fire bar having a central body part, shoulder portions of similar shape in plan at the ends thereof wider than said body part and a like number of vertical integral ribs with parallel sides at the surface extending outwardly from said body part on'each side all to the same distance as the shoulder portions, said ribs being tapered from back to front the tapering commencing at a point below the upper surface of the bar and extending to the lower ends of the ribs and the spaces between the ribs at the surface of the b ltol being narrower than the width of the r1 s.

, 2. A fire bar having a central body'part,

shoulder portions of similar shape in plan at the ends thereof wider than said body part and a like number of vertical integral ribs with parallel sides at the surface extending outwardly from said body part on each side allto the same distance as the shoulder portions, said ribs being tapered from back to front the tapering commencing at a point below the upper surface of the bar and extending to the lower ends of the ribs, the ribs being also tapered from the top towards the bottom and the spaces between the ribs at the surface of the bar being narrower than the widths of the ribs.

3. A fire bar having a central body part, shoulder portions of similar shape in plan at the ends thereof wider than said body part and a like number of vertical integral ribs with parallel sides at the surface extending outwardly from said body part on each side all to the same distance as the shoulder portions, said ribs being tapered from back to front, the tapering commencing at a point below the upper surface of the bar and extending to the lower ends of the ribs, the

ribs being also tapered from the top towards the bottom with the tapering commencing a short distance below the top surface of the bar and the spaces between the ribs at the surface of the bar being narrower than the width of the ribs.

Dated this 24th day of March, 1927.

GEORGE HENRY COLLINS.

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