Improvements in Water Tube Boilers.
Year: 1898

page_text: Improvements in Water Tube Boilers.
GEORGE NOWELL PHILIP, Sandquay, Dartmouth, Mechanical Engineer, do
hereby declare the nature of this invention to be as follows:-
-
This invention has for its object the simplification of water tube boilers so
far as regards cleaning, construction, and cost of production.
I provide an upright square boiler having an inner and outer shell, of a shape
similar to that of a locomotive firebox. I provide the inner shell with a sufficient
number of tubes securely rolled and beaded into the tube plates which are formed
of two opposite sides of the internal shell. On the outer shell I provide two or
more suitable doors opposite to the mouths of the tubes, so as to facilitate the
cleaning of the tubes and tube-plates. The inner and outer shells are suitably
stayed together, and a funnel is led away from the upper part of the inner shell
through the outer shell. I also provide that there shall be a certain amount of
rake in the tubes from front to back, so as to promote circulation, and also that
there shall be a number of baffle plates constructed either of iron, steel, asbestos,
or other suitable material, fitted horizontally among the nest of tubes so as to
deflect the flame or heated gases from rising directly from the fire towards the
funnel, and thus bring every part of the tubes and sides and the top of the
inner shell into contact with the heated gases.
Dotad this 23rd day of November 1808
WALTER PHILLIPS,
Agent for George Nowell Philip.
GEORGE NOWELL PHILIP, Sandhill, Dartmouth, 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: -
The boiler is constructed somewhat in the shape of the firebox of the loco-
motive type boiler, having an inner and outer shell, with a water space all around
between the two shells. Into the inner shell are fixed a number of tubes, either
of steel, iron, copper, brass aluminium, or other metal, and which are properly
rolled or expanded into the tube plates which are formed of two opposite sides of
the inner shell. These tubes may be simply expanded into the tube plates, or
they may be expanded both inside or outside of the plates and beaded over.
and must be provided with as much rake back to front as will be sufficient to
promote the circulation of the water within them. The inner and outer shells
רנ...D

page_text: may be stayed together by screwed or other stays. Opposite the mouths of the
tubes and on the outer shell plates two suitable doors are provided so that access
may be given to the inside of the tubes for cleaning off any scale or deposit that
might be formed thereon. These doors are suitably stiffened and stayed to the
tube plates, or through the tubes as may be thought necessary. From the centre
of the top of the inner shell a funnel is provided which passes through the outer
shell. Suitable stays are also placed where required between the walls of the
outer shell and the inner and outer shells.
In order that my invention and the manner of construction may be the better
understood, have appended two sheets of drawings in which,
Fig. 1 is a section through the boiler showing the tubes in elevation.
Fig. 2 is a section through the tubes showing the stays between the inner and
outer shells.
Fig. 3 is an outside view of the boiler showing the stays etc. and corresponds to
the outside of Fig. 1.
Fig. 4 is also an outside view of the boiler showing the tube doors in position
and corresponds with the outside of Fig. 2.
Similar letters are used throughout to indicate the same parts.
A, A, represent the tube plates and inner shell.
B, B, the tubes.
C, C, the outer shell.
D, D, the portable doors giving access to the inside of the tubes.
E, E, the firedoor opening.
F, F, the stays supporting the tube doors and tube plates.
G, G, the funnel or uptake.
H, H, the stays supporting the outer shell of the boiler.
Various stays are also shown in other positions, being used to stay the parts'
between the inner and outer shells. Firedoors and firebars are also shown, but t
their positions are not essential.
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:-
-
A simplified form of water tube boiler giving more easy access for cleaning
the inside of the tubes, and simple in construction and cost of construction.
Dated this 23rd day of August 1899.
WALTER PHILLIPS,
Agent for Applicant, George Nowell Philip.