Improvements in Furnace Grates or Fire-bars.
Year: 1892

page_text: Date of Application, 8th Feb., 1892
Complete Specification Left, 5th Nov., 1892-Accepted. 10th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Furnace Grates or Fire-bars.
We, JAMES JONES MELDRUM and THOMAS FREDERICK MELDRUM, both of
Atlantic Works, City Road, Manchester, in the County of Lancaster, Engineers,
do hereby declare the nature of this invention to be as follows:
This invention has reference to furnace grates, or fire-bars used in and con--
stituting such grates, and has for its object, chiefly, to provide means for preventing
the bars from becoming mis-placed accidentally or otherwise.
According to this invention, the fire-bars have cast upon them or are provided
with projections, buttons, or their equivalent, at one side or part, and on the other
side or part are formed corresponding recesses, apertures or provisions, with which
the aforesaid projections or provisions engage or fit; or, as a modification, the
projections or provisions may be formed or provided on alternate bars of the grate,.
and the recesses or apertures in the other half set of the bars.
In some cases in fitting the bars in the grate, the projections, buttons, or the like
on the side of the bars on the outside of the grate, are removed, and in some cases,
such for instance as when the bars are to be fitted tightly sideways, the projections,.
buttons, or the like may be removed from the last two bars.
Dated this 4th day of February 1892.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicants' Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Furnace Grates or Fire-bars.
We, JAMES JONES MELDRUM and THOMAS FREDERICK MELDRUM, both of
Atlantic Works, City Road, Manchester, in the County of Lancaster, Engineers,.
do hereby declare the nature of this invention and in what manner the same.
is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention has reference to furnace grates, or fire-bars used in and con-
stituting such grates, and has for its object, chiefly, to provide means for preventing
the bars from becoming mis-placed accidentally or otherwise.
According to this invention, the fire-bars have cast upon them or are provided
with projections, buttons, or their equivalent, at one side or part, and on the other
side or part are formed corresponding recesses, apertures or provisions, with which
the aforesaid projections or provisions engage or fit; or, as a modification, the.
projections or provisions may be formed or provided on alternate bars of the grate,
and the recesses or apertures in the other half set of the bars.
In some cases in fitting the bars in the grate, the projections, buttons, or the like
on the side of the bars on the outside of the grate, are removed; and in some cases,
such for instance as when the bars are to be fitted tightly sideways, the projections,.
buttons, or the like may be removed from the last two bars.
A drawing illustrating one example of fire-bars according to our invention, is.
annexed to this Specification, the Figures 1, 2, and 3, being elevations of the
two sides of the bar, and a cross section through the projections and recesses,.
respectively.
Referring to this drawing, a represents the projections at each end of the bar,.
and on one side of the same; whilst b represents corresponding recesses on the

page_text: opposite sides of the bar. It will be seen in this example the metal of the bars
round these recesses or apertures stands off from the face of the bar, forming
rings, and constituting distance pieces between the adjacent bars, but other
arrangements or forms of projections and recesses may be used if desired.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
The improvements in furnace grates or fire-bars herein described, that is to say,
furnace grate fire-bars provided with means of interlocking, as, or substantially as,
described, whereby the bars forming the grate, when fitted in a furnace, are
prevented from becoming misplaced.
Dated this 2nd day of November 1892.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicants' Patent Agents.