Improvements connected with the Fitting of Furnace Fire-grates to Internally Fired Boilers.
Year: 1889

page_text: Date of Application, 14th June, 1889
Complete Specification Left, 5th Mar., 1890-Accepted, 5th Apr., 1890.
PROVISIONAL SPECIFICATION.
Improvements connected with the Fitting of Furnace Fire-grates to
Internally Fired Boilers.
I, LEWIS HOPCRAFT, of 26 West Bank, Stamford Hill, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows :-
This invention relates to the fitting of furnace fire grates to internally fired boilers
in such a manner that they can be placed bodily in the furnace tubes of the boilers,
and taken bodily out when required for repairs, or inspection, or for other purposes,
thus effecting economy in the time required for repairing &c., since all the parts are
easily accessible and saving a great deal of labour, at present lost in manipulating the
repairing tools and the like by workmen in the confined spaces in which the furnace
grates of internally fired boilers are usually placed.
According to this invention, I construct a casing smaller in size than the furnace
tube, so that it may easily slide therein without jambing against the plate rivets or
other projections, and within this casing I build the furnace bridge and fit together
the various parts forming the furnace grate. The casing is then with the furnace
grate therein, placed in position in the furnace tube and secured by means of suitable
flanges constructed or formed on or affixed to the casing whereby the casing may be
riveted or bolted to the boiler plates.
CT
1000
"
CASTLE SMITH,
Per F. W. Golby,
'Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements connected with the Fitting of Furnace Fire-grates to
Internally Fired Boilers.
1, LEWIS HOPORAFT, of 26 West Bank, Stamford Hill, in the County of Middlesex,
Engineer, 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 relates to the fitting of furnace fire grates to internally fired boilers
in such a manner that they can be placed bodily in the furnace tubes of the boilers,
and taken bodily out when required for repairs, or inspection, or for other purposes,
thus effecting economy in the time required for repairing etc., since all the parts are
easily accessible, and saving a great deal of labour, at present lost in manipulating the
repairing tools and the like by workmen in the confined spaces in which the furnace
grates of internally fired boilers are usually placed.
According to this invention, I construct a casing smaller in size than the furnace
tube, so that it may easily slide therein without jambing against the plate rivets, or
other projections; in this casing I fit together the various parts forming the furnace
grate. The casing with the furnace grate therein, is then placed in position in the
furnace tube and secured by means of suitable flanges constructed or formed on, or
affixed to, the casing, whereby the casing may be riveted or bolted to the boiler
plates.
And in order that my invention may be more fully understood and carried into
practice I will now proceed to describe the same with reference to the accompanying
drawings in which similar letters indicate corresponding parts throughout.

page_text: Figure 1 is a longitudinal section; and Figures 2 and 3 are end views of one form
of casing V but the shape or configuration of the casing will conform to the shape
of the furnace fire grate to which the invention is to be adapted.
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Having now particularly described and''ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The casing V in which the various parts of a furnace fire grate may be fitted
together for expeditiously fitting furnace fire grates into or withdrawing them from
internally fired boilers substantially as and for the purpose hereinbefore set forth and
illustrated in the accompanying drawings.
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.