Improvements in Steam Boilers.
Year: 1888

page_text: Cate of Application, 29th Nov., 1888
Complete Specification Left, 8th June, 1889-Accepted, 13th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Steam Boilers.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature
of this invention, as communicated to me from abroad by the Company: "Gewerkschaft
Schulz, Knaudt" of Essen on the Ruhr, kingdom of Prussia, to be as follows:-
This invention relates to steam-boilers which comprise a part containing a fire-box
and one or more parts provided with tubes, and it consists in connecting together
any of the said parts by means of a flue constructed of fire-proof material and having
a shell that is kept cool by means of water.
The said shell may consist in a case of sheet-metal forming a water-jacket, or in a
row of tubes containing water and preferably enclosed in an outer wall of sheet-metal,
or in a single sheet-metal wall provided with means for causing water to flow over
and along the same, or in a combination of any of these constructions. The fire-proof
material may be secured to the shell by screws whose heads are sunk into the former
so as to be protected thereby.
Dated the 29th day of November 1888
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Steam-boilers.
1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co. Patent Agents
45 Southampton Buildings, London, do hereby declare the nature of this invention
and in what manner the same is to be performed, (as communicated to me from
abroad by the Company "Gewerkschaft Schulz Knaudt" of Essen on the Rubr,
kingdom of Prussia,) to be particularly described and ascertained in and by the
following statement :-
This invention relates to steam-boilers which comprise a part containing a fire-box
and one or more parts provided with tubes, and it consists in connecting together any of
the said parts by means of a flue constructed of fire-proof material and having a shell
that is kept cool by means of water.
In the annexed drawing fig. 1 is a longitudinal vertical section and fig. 2 a trans-
verse section on line 1, 2, fig. 1, of two boilers, each composed of the fire-box part A
and the tubular part B. C is the flue connecting together the parts A and B. The
said flue consists in an inner wall of fire-bricks or other fire-proof material and a
shell DE of sheet-metal, the part D of the latter forming a water-jacket which encloses
the said wall at the sides and the bottom, while the part E forms a trough covering
the wall at the top. Into the jacket D water is introduced at a and it flows out of the
same into the trough E at b.
Fig. 3 shows in section a water-jacket D' consisting in a row of juxtaposed tubes
through which water is caused to circulate in like manner as through the shell D.
The said tubes are preferably enclosed by an outer shell of sheet-metal.
Fig. 4 represents a water-jacket D applied to a flue C.which connects together the
parts A and B of a single boiler, the jacket extending, in this case, over the whole
back of the flue.
The protecting shell may also consist in a single sheet-metal wall above which are
arranged perforated water-pipes, by means whereof water is caused to flow over and
along the shell in view of cooling it.

page_text: The fire-proof material may be secured to the shell by screws or bolts whose heads
are protected by the former. Thus fig. 5 shows an arrangement for fastening bricks d
to the shell by means of screws having their heads sunk into recesses of the bricks,
the said recesses being subsequently filled up with fire-proof clay. If the inner part
of the flue is to consist in a layer of clay applied to the shell, the construction-shown
by fig. 6 is available. According to fig. 7 the connection between the bricks & and
a water-jacket shell is established by bolts passing through tubes c, which traverse
the jacket and are fixed in the walls thereof.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, as communicated to me
by my Foreign Correspondents I declare that what I claim is.
The combination, with a boiler or boilers having a fire-box part or parts A and a
tubular part or parts B, of a flue C, connecting together any of the said parts and
composed of an inner wall of fire-proof material and a water-jacket, or a shell of
sheet-metal over which water is caused to flow, substantially as described.
Dated this 8th day of June 1889.
HASELTINE, LAKE & Co., ..
45, Southampton Buildings, London, W.C., Agents for the Applicant.