Year: 1888

page_text: Figure 2, a transverse section and..
Figure 3, an elevation of a Hollow Grate, embodying my Invention.
A, represents the hollow grate bars, preferably, rectangular in cross section, or
nearly so, as shown.
The hollow bars, A, have their adjacent edges parallel and are joined in pairs,
alternately, near their opposite ends, by the connecting tubes, B, which are threaded,
right and left to engage the threaded openings in the bars. The bars are further
connected and braced by the integral partition pieces, a, which are placed near the
ends and opposite the tubes, B.
C, is the feed or entrance pipe, for water, leading from the pump and, D, is the pipe,
through which the water passes from the grate to the boiler. The pipe, C, enters the
outer side of one of the outer hollow bars near its end and the pipe, D, communicates
with the under side of the outer hollow grate bar, opposite the pipe, C.
It will be observed, that the pipes, C, and, D, enter the hollow bars, near the ends,

page_text: connected by the pieces, a, and that the water is thus forced in a tortuous manner,
through the grate bars, A, on its way to the boiler.
E, E, are transverse rods, having bearings in the lugs, b, depending from the
bars, A, and, c, are arms standing from the rods, E, E, normally parallel with the
bottoms of the hollow grate bars and designed, when operated, to pass between
adjacent bars.
The rod, E, at one end, passes beyond the grate bars and through the furnace wall
and is provided with the shaking lever, F, and the two rods are joined and operated
together, by the link bar, d, pivotally connected to the arms, c, depending from the
rods, E, E¹, as shown.
G, designates the agitators, located between the hollow grate bars and pivoted to the
outer ends of the arms, c. While at rest, the upper edges, of the agitators, G, are
nearly flush with the upper sides.of the grate.bars, but when forced by the lever, F,
turning the rods, E, E, and the arms, c, the edges of the agitator project above the
level of the bars and are thus designed to agitate the fire, clearing it from ashes and
creating a free draft passage.
It will be observed, that the transverse rod; E', has its journal bearings, at a greater
distance from the ends of the grate bars than the rod, E; that the arms, e on the
respective rods project in the same direction and that the agitators, G, are so pivoted
to the arms, that the longitudinal interspaces, between the bars, are nearly filled.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is:
1st. A grate, for boiler furnaces, consisting of the hollow bars, communicating in
pairs, at alternate opposite ends and having the feed pipe and the boiler connection
pipe, substantially as specified.
2nd. In a grate for boiler furnaces, the combination of the hollow grate bars, com-
municating at opposite alternate ends, the feed pipe, the outlet pipe and the agitator
mechanism, substantially as described.
3rd. The combination, in a grate for furnaces, of the grate bars, provided with the
depending lugs, the transverse rods, journaled therein and having the arms, c, e, the
link bar, d, the agitators, G, and the lever, F, substantially as specified.
4th. In a grate, for boiler furnaces, the combination of the hollow bars, A, joined
in pairs, at opposite alternate ends, by the tubes, B, the entrance pipe, c, the pipe, D;
communicating with the boiler, the transverse rods, E, EI, provided with the arms, c,
e, and connected pivotally, by the link bar, d, the agitators, G, and the shaking
lever, substantially as specified.
and
Doted th: 1011
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