Year: 1887

page_text: Date of Application, 1st June, 1887
Complete Left, 1st Mar., 1888
Complete Accepted, 20th Apr., 1888
1 ALBRECHT EDWARD BARTHEL of 50 Parliament street in the City of London S.W.
Civil Engineer do hereby declare the nature of this invention for GASOMETERS to be
as follows:
In gasholders sheet metal is now preferably employed in place of masonry in the
construction of the tanks. Up to the present time these tanks have been constructed
with a flat bottom, seated on a level surface of the ground or upon solid masonry or
concrete. This construction, however, renders it very difficult in case of leakage to
locate the defective part or to gain access to the defective part, nor is it possible
to protect the bottom against corrosion by protective agents after the holder is placed
in position.
This Invention has for its object certain improvements in fluid-reservoirs of great
capacity, such, for instance, as the water-tanks for gas holders, the said improvements
being applicable to all other classes of fluid reservoirs or storage-tanks.
This Invention is designed as an improvement in the construction of the
bottom of the reservoirs or tanks referred to and described in my application for
Letters Patent of even date with this, No. and it consists in constructing the
bottom of the tank or reservoir of a counter-bottom, which may be conical, or concave,
or convex, or hemispherical, and a bottom formed by re-entering and salient angles,
whose apices lie in vertical planes parallel with the vertical axis of the tank or
reservoir, one or more of said salient angles forming a seat or seats for the support
of said tank or reservoir, and in combination therewith of one or more supports or
seat-rings.
The tank of the gasholder, whose bottom is formed by two reversely-inclined
surfaces, that form a salient angle at the line of junction of said bottom and the
counter-bottom and a reentering angle at the line of junction of the reversely-inclined
surfaces, a second salient angle being formed at the point of junction between the
inclined surface and a counter-bottom, such salient angle forming a seat from which
the tank is supported, either upon a suitable seat-ring or directly from a foundation-
wall or other suitable support of such hight as to afford ready and free access to the
entire outer surface of the bottom of the tank,

page_text: Instead of supporting the tank from a single seat, it may be supported from a
plurality of seats. In this construction the bottom is supported from two seat-rings,
the inner ring serves as a bearing for the seat formed at the line of junction between
the counter-bottom and the reversely-inclined surface, the reentering angle being
formed by said surface and the inclined surface, the second salient angle being here
formed by said inclined surface and an inclined surface, that is connected with the
reservoir, said second salient angle forming also a seat for the support of the cylinder.
In this case there is an outer conical bottom, an intermediate angular bottom and
counter-bottom. It will be observed that the apices of the salient an reentering
angles all lie in vertical planes parallel with the axis of the tank, so that the forces
exerted проп the supports for said tank are exerted in a vertical direction, there being
no lateral pressures. I am therefore enabled to use supports of considerably less
strength than usual, and combine several independent supports, if desired, and yet
afford free access to the entire outer surface of the bottom of the tank.
The counter-bottom may have any desired form, provided it be such that the
pressures exerted will be in a vertical direction. Thus the bottom may be conical,
convex, hemispherical or concave.
A further advantage obtained in this construction of bottom is that a very material
saving in labor is effected in preparing the ground for the reception of the foundations
for both the tank and the supports for the bell, as referred to in the application
hereinbefore mentioned.

page_text: I ALBRECHT EDWARD BARTHEL of 50 Parliament Street in the City of London S.W.
Civil 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 :-
This invention consists of the improvements hereinafter described in and connected
with gas holder tanks having bottoms of the construction described in the specification
filed by me in application for Letters Patent dated 31st May 1887 No. 7886 and in
the specification of even date with this numbered 7907.
The said improvements consist first in making the middle part of the bottoms of
gasometer tanks such as are described in the former of the aforesaid specifications
conical instead of hemispherical or cup shaped or convex or concave as described in
the said specification and the said improvements consist further in mounting tanks
constructed as described in both the said specifications and as herein described on seat
rings arranged on the annular supporting wall described in the said specifications
instead of mounting the said tanks directly on the said walls.
Figure 1 of the accompanying drawings is a central vertical section of a gas holder
tank in which the middle part a of the bottom is formed conical.
Figure 2 is a contral vertical section of a gas holder tank of the construction
hereinbefore referred to having a single annular bearing surface a and mounted on a
seat ring 6 which is supported on an annular wall c.
Figure 3 is a central vertical section of a gas holder tank of the construction
hereinbefore referred to having two annular bearing surfaces de resting respectively
on seat rings fg which are supported by annular walls marked respectively hi.
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 The improvement hereinbefore described in gasometer tanks having bottoms
constructed as described in the specification No. 7886 of 1887 and illustrated in the
Drawings accompanying the said specification that is to say forming the middle
portion of the bottom of such tanks conical instead of hemispherical or cup shaped.
Secondly-Mounting gasometer tanks having bottoms constructed as described
and illustrated in the specifications Nos. 7886 of 1887 and 7907 of 1887 and as herein-
before described and illustrated in the accompanying Drawings on a seat ring or seat
rings supported on an annular wall or on annular walls.
Dated this First day of March 1888.
W. I. WHITEMAN,
Agent for the Applicant.