Improvements in the Construction of Steam Boilers.
Year: 1887

page_text: Date of Application, 10th May, 1887
Complete Left, 10th Feb., 1888
Complete Accepted, 16th Mar., 1888
Improvements in the Construction of Steam Boilers.
I, THOMAS HIPKINS, of The Cottage, Heneage Street, Spitalfields, in the County of
Middlesex, Boiler Maker, do hereby declare the nature of my said invention to be
as follows:
The object of my invention is to manufacture improved Steam Boilers.
My improved steam boilers are of the rectangular vertical type, with return tubes
above the fire box, and a combustion chamber at the back. Water spaced walls
surround the firo chamber and combustion chamber; and the tubes are placed
horizontally, or on a slight incline, to carry the heated gases to the smoke box, and
furnish sufficient heating surface for raising stean.
The fire box may be arranged for firing at one or both ends, and is made with an
open bottom.
The upper part of the boiler, above the tubes, may be arched or semi-cylindrical
rectangular, semi-globular, cylindrical, or of any other suitable form, so as to afford
sufficient steam space, above the water-level.
The whole of the shell of the boiler is well stayed, wherever necessary; the front
and back tube plates being usually sufficiently stayed by the tubes, but when found
necessary, stay tubes, or other stays, are inserted for ensuring safety.
In some cases the boilers are made double-ended, with a furnace at each end; one
combustion chamber being sufficient, for both sets of tubes, the furnaces being fired
alternately to consume the smoke, and render the combustion more perfect.
The crown or crowns of the furnace or furnaces may be flat, corrugated or arched,
and suitably stayed when and where necessary.
The fire box is fitted with a door, for gaining access to the tubes for cleansing or
repair.
GEO. DOWNING,
Agent for Applicant.

page_text: I THOMAS HIPKINS, of The Cottage, Heneage Street, Spitalfields, in the County of
Middlesex, Boiler Maker, do hereby declare the nature of my said invention and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
The object of my invention is to manufacture improved steam boilers.
My improved steam boilers are of the rectangular vertical type, with return tubes
above the fire box, and a combustion chamber at the back. Water spaced walls
surround the fire chamber and combustion chamber; and the tubes are placed
horizontally, or on a slight incline, to carry the heated gases to the smoke box, and
furnish sufficient heating surface for raising steam.
The fire box may be arranged for firing at one or both ends, and is made with an
open bottom.
The upper part of the boiler, above the tubes, may be arched or semi-cylindrical,
rectangular, semi-globular, cylindrical, or of any other suitable form, so as to afford
sufficient steam space, above the water-level.
The whole of the shell of the boiler is well stayed, wherever necessary; the front
and back tube plates being usually sufficiently stayed by the tubes, but, when found
necessary, stay tubes, or other stays, are inserted for ensuring safety.
The crown of the furnace may be flat, corrugated or arched, and suitably stayed
when and where necessary.
The smoke box is fitted with a door, for gaining access to the tubes for cleaning or
repair.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig. 1 is a vertical section of the improved boiler, in a line with the tubes. Fig. 2
is a vertical section on the line a b of Fig. 1; and Fig. 3 is a horizontal section on
the line c d.
g
e is the furnace, the furnace bars, 9 the ash pit, h the combustion chamber, ii are
the flue tubes, and k the chimney. is the furnace crown, shewing one method of
construction. m is an ordinary man-hole, and nnnn are four corner sludge holes,
- conveniently placed for cleaning out the water spaces round the fire box. o is the fire
door and p is a deflector to throw the air downwards upon the fuel.
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 improved construction of steam boilers, substantially as herein before described
and shewn on the drawings.