Improvements in the Manufacture of Tanks.
Year: 1895

page_text: Date of Application, 17th Sept., 1895
Complete Specification Left, 17th June, 1896-Accepted, 18th July,
1896
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Tanks.
We, ARTHUR CHARLES MOORE, of Bryn Alyn, Anerley, in the County of
Surrey, Gentleman, and JOHN FREDERICK CREASE C.B. of Sion, Stourbridge,
in the County of Worcester Major-General in Her Majesty's Army (retired) do
bereby declare the nature of this invention to be as follows:-
This invention has reference to an improved construction of tanks suitable for
containing water or other liquid.
Such a tank if constructed with a cover (which, however, may in some cases be
omitted as for example when an open tank or cistern is to be produced) has its
walls composed of six plates of suitable metal such as wrought iron or steel
whereof two are plain at the edges and are each on one face coated with enamel all
over the surface with the exception of a margin all round that is left uncoated and
is to come opposite another plate or flanges as hereinafter mentioned two are
flanged each at all the four sides thereof and have each entirely coated with
enamel the reverse surface to that at which the flanges are located and two are
flanged each at two opposite sides thereof and are coated with enamel each one the
reverse surface to that at which the flanges are located but have uncoated margins
at the unflanged sides to make joints with other plates; these plates are all so put
together that they form an internally enamelled tank having all the flanges thereof
projecting outwardly and every joint formed by a flange or plain portion one
enamelled plate overlapping or being face to face with and secured to a flange of
another plate; these parts being fastened together in any convenient way as for
example by rivetting or welding.
By this invention the construction of the tanks is facilitated not only in con-
sequence of the joints being as above indicated all outside but also by dispensing
with internal overlapped parts such as heretofore have necessitated a separate
coating process with enamel, enamel-cement or other composition over such pro-
jections after parts of the tank have been finally fastened together. It is however
to be noted that in constructing tanks according to this invention at the joints
enamel cement or other composition may be applied after the tank walls have
been finally put together to ensure that the contents of the tank shall not have
access to the metal walls.
Tanks according to this invention with joints wholly outside may be formed of
more than five or six plates and of plates flanged otherwise than as above described
and in some cases may be coated internally otherwise than by enamelling or when
5 constructed of wrought iron or steel may be even for some purposes uncoated.
Sometimes the projecting joints or some of them are formed by folding the edges
over each other and submit them to pressure. In some cases the outwardly
projecting joints are bent down so as to occupy less space; sometimes they are
strengthened by means of angle irons or by channelled or U-shaped strips passed
0 over the edges to be joined the whole being similarly fastened together as by
rivetting or welding.
Dated this 17th dex of September 1895.

page_text: We, ARTHUR CHARLES MOORE, of Bryn Alyn, Anerley, in the County of
Surrey, Gentleman, and JOHN FREDERICK CREASE C.B., of Sion, Stourbridge,
in the County of Worcester, Major-General in Her Majesty's Army (retired), do
hereby declare the nature of this invention to be as follows:-
This invention has reference to an improved construction of tanks suitable for
containing water or other liquid, as we shall now proceed to explain by reference
to the accompanying drawings, in which
Fig. 1 is a horizontal section on the line ab of Fig. 2, and Fig. 2 is a vertical
section on the line cd of Fig. I showing a modified construction of tank.
Figs. 3 to 9 inclusive are detail views showing different forms of joints.
The tank shown in Figs. 1, & 2, if constructed with a cover, as shown, (which
however, may in some cases be omitted as for example when an open tank or
cistern is to be produced) has its walls composed of six plates of suitable metal
such as wrought iron or steel whereof two, biz.: the top and bottom plates 1, 1*
are plain at the edges and are each on one face coated with enamel all over the
surface with the exception of a margin all round that is left uncoated and is to
come opposite other plates or flanges as hereinafter mentioned; two, viz. the two
opposite side plates 2, 2ª are flanged outwardly each at all the four margins thereof
and have each entirely coated with enamel the reverse surface to that at which
the flanges 2 are located; and two, viz. the remaining two opposite side plates 3, 3ª,
are flanged each at the top and bottom thereof as shown at 3b, and are coated with
enamel each one at the reverse surface to that at which the flanges are located but
have uncoated margins at 3° at the unflanged sides to make joints with the
flanges 2 of the plates 2, 2. The several plates are so put together, as shewn,
that they form an internally enamelled tank having all the flanges thereof pro-
jecting outwardly and every joint formed by a flanged or plain portion of one
enamelled plate overlapping or being face to face with and secured to a flange of
another plate, these parts being fastened together in any convenient way, as for
example by rivetting or welding.
Tanks according to this invention, with joints wholly outside may be formed of
more than five or six plates, and of plates flanged otherwise than as above
described. For example, each side plate may have each of its vertical margins
bent to form a flange arranged at an obtuse angle to the outer surface of the plate
as shown in Fig. 3 the flange at the bottom and top of each plate being at right
angles to the surface of the plate. Sometimes the projecting joints, or some of
them, are formed by folding the edges over each other as shown in Fig. 4, and
submitting them to pressure. In some cases the outwardly projecting joints are
hent down so as to occupy less space as shewn in Fig. 5; sometimes they are
strengthened by means of angle irons 4 as shown in Fig. 6, or by channelled or
U-shaped strips 5 passed over the edges to be joined as shown in Fig. 7, the whole
being suitably fastened together, as by rivetting or welding, or by the insertion
between them of plain metal strips 6 as shown in Fig. 8, or of Y-shaped strips 7
as shown in Fig. 9.
By constructing the tanks with the joints all outside as shewn the manufacture
of the tanks is facilitated not only in consequence of the joints being as above
indicated all outside, but also by reason of there being no internal overlapped or
exposed parts except in the arrangements shown in Figs. 8 and 9, a separate
coating process with enamel, enamel-cement or other composition for protecting
such overlapped or exposed parts at the inside of the tank, after parts of the tank
have been finally fastened together, may be dispensed with, (except in the case

page_text: of the arrangement shown in Figs. 8 and 9, where the inner edges of the strips 6
and the inner surfaces and edges of the flanges of the strips,7 within the tank must
be protected by enamel applied by heat or by enamel-cement or the like composition
applied in the plastic state and allowed to set), after the tank is built up, or if
desired the inner edges or surfaces of the strips 6 and 7 which after being put into
position will be exposed to the action of water in the tank may be enamelled (by
heat) previously to being put into position. It is however to be noted that in
constructing tanks with the joints outside as in Figs. 1 to 7 inclusive, enamel or
enamel-cement or other like composition may be applied to the joints after the
tank walls have been finally put together, to ensure that the contents of the tank
shall not have access to the metal walls. When enamel is thus applied, the
enamelling composition used should be of such a nature that it will fuse more easily
and at a lower temperature than the enamel already applied to the inner surfaces
of the plates so that the latter enamel will not be injuriously affected by the second
exposure to heat in a furnace.
By this invention we are enabled to produce tanks of metal such as wrought
iron, having a complete internal coating of enamel alone, or of enamel and enamel-
cement, or of other suitable composition, having like the others a close grained
stone-like nature when set.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The hereinabove described improved manufacture of internally enamelled
metallic tanks constructed of plates of wrought iron or steel with flanged joints all
external, whether such tanks be with or without covers.
2. The hereinabove described improved manufacture of wrought iron or steel
tanks having the whole of the joints external, whether such joints be rivetted or
welded as set forth.
3. The improved internally enamelled wrought iron or steel tank shown in and
described with reference to the drawing whether the joints be according to Figs. 1
and 2, or be modified according to one or other of the arrangements shown in
Figs. 3 to 9 inclusive of the said drawings.
1724 dom of Tuno 1806