Year: 1887

page_text: Date of Application, 31st May, 1887
Complete Left, 29th Feb., 1888
Complete Accepted, 29th Mar., 1888
I ALBRECHT EDWARD BARTHEL of No. 50 Parliament Street in the City of
Westminster Mechanical Engineer do hereby declare the nature of this Invention to
be as follows:-
Elevated railway and other tanks are now generally constructed of metal sheets
(usually of sheet iron) which make it necessary to provide them with heavy horizontal
metal bottoms supported on large girders or columns. Cylindrical elevated tanks are
supported at their periphery by brick walls and are provided with bottoms which are
suspended from the walls and are generally hemispherical.
When the tank is placed on an outside annular frame under the cylindrical shell
for the said annular frame to be suitably supported and in order that a free space
should be left round the cylinder to give access to it for inspection the said annular
frame should be made to bear upon large and very carefully constructed walls which are
consequently very costly.
The annular bearing frame which in the case of large tanks must be of considerable
size is made in a great measure of cast iron and on account of the horizontal and
radial tractive component forces which have to be combined the said annular frame
must be constructed with great care and strongly bolted to the extended edges of the
tank bottom.
The horizontal components of the tractive force on the bottom plate act in an
unfavourable manner in consequence of the friction of the bearing frame upon the
brickwork so that often the rolled and cast iron and stone must operate injuriously one
on the other.
The hemispherical bottom is difficult and expensive to make.
According to this invention these disadvantages are obviated by mounting the tank
upon a central annular wall or support the bottom of the tank being made conical
that is to say so that it projects outwards from the said annular central support upon
which it bears up to the outer cylindrical sides of the tank the central portion of the
877

page_text: bottom or that part within the annular central support being made cup shaped or
conical with the apex of the cone projecting into the tank the bottom of which has
thus in section somewhat the form of the letter W..
By the above described construction the components of the horizontal forces acting
on the inner and outer parts of the bottom may he readily adjusted so as to be in
equilibrium leaving only a vertical thrust to be supported by the central annular
wall.
The central discharge pipe of the tank may be made also to support the roof and if
desired the middle portion of the bottom may be combined with the frame of a spiral
staircase passing through the tank.
W. T. WHITEMAN,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Elevated Railway and other High Level Tanks.
I ALBRECHT EDWARD BARTHEL of No. 50 Parliament Street in the City of
Westminster Mechanical 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 :-
Elevated railway and other tanks are now generally constructed of metal sheets
(usually of sheet iron) which make it necessary to provide them with heavy horizontal
metal bottoms supported on large girders or columns. Cylindrical elevated tanks are
supported at their periphery by brick walls and are provided with bottoms which are
suspended from the walls and are generally hemispherical.
When the tank is placed on an outside annular frame under the cylindrical shell
for the said annular frame to be suitably supported and in order that a free space
should be left round the cylinder to give access to it for inspection the said annular
frame should be made to bear upon large and very carefully constructed walls which
are consequently very costly.
The annular bearing frame which in the case of large tanks must be of considerable
size is made in a great measure of cast iron and on account of the horizontal and
radial tractive component forces which have to be combined the said annular frame
must be constructed with great care and strongly bolted to the extended edges of the
tank bottom.
The horizontal components of the tractive force on the bottom plate act in an
unfavourable manner in consequence of the friction of the bearing frame upon the
brickwork so that often the rolled and cast iron and stone must operate injuriously
one on the other.
The hemispherical bottom is difficult and expensive to make.
According to this invention these disadvantages are obviated by mounting the tank
upon an annular wall or support the bottom of the tank being made conical that is to
say so that it projects outwards from the said annular central support upon which it
bears up to the outer cylindrical sides of the tank the central portion of the bottom or
that part within the annular support being made cup shaped or conical with the apex
of the cone projecting into the tank the bottom of which has thus in section somewhat
the form of the letter W.
By the above described construction the components of the horizontal forces acting
on the inner and outer parts of the bottom may.be readily adjusted so as to be in
equilibrium leaving only a vertical thrust to be supported by the central annular
wall.
The central discharge pipe of the tank may be made also to support the roof and if
desired the middle portion of the bottom may be combined with the frame of a spiral
staircase passing through the tank.
I will further describe my invention with reference to the accompanying drawing.
Figure 1 of the said drawing is a central vertical section of a tank or reservoir

page_text: formed and mounted as hereinbefore described and Figure 2 is a sectional plan of the
same the section being taken on the line A Figure 1.
a is the tank the bottom of which is made of conical form as hereinbefore described.
bis the annular support on the upper surface of which the tank rests. c is the
overflow pipe which passes through the centre of the tank bottom and may be made to
serve as a central support for a roof the outer parts being supported by the outer
wall d. e is the discharge pipe of the tank.
Figure 3 of the said drawing is a central vertical section of a tank constructed as
hereinbefore described the middle portion f being made cup shaped. The annular
support of the tank shown in this Figure consists of tubes f**.
Figure 4 of the accompanying drawing is a central vertical section of a tank
constructed as hereinbefore described showing the conibination of a staircase therewith.
In the said Figure 9 is the tank which is of annular form and is supported by a
circular wall h. i is the staircase which is arranged in the inner tubular shell; of the
tank.
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
First. Constructing the bottoms of elevated tanks of a combination of conical forms
or conical and cup shaped forms and mounting such tanks on annular supports
substantially as and for the purpose hereinbefore described.
Secondly. Forming the bottoms of elevated tanks and mounting such tanks as
illustrated in Figure 1 of the accompanying drawing.
Thirdly. Forming the bottoms of elevated tanks and mounting such tanks as
illustrated in Figure 3 of the accompanying Drawing.
Fourthly. Forining a shaft or tubular passage through the middle of a tank
constructed and mounted substantially as herein before described and arranging within
the said shaft or tubular passage a staircase or other means of access to the upper part
of the tank.
Dated this 28th day of February 1888.