Improvements in the Construction of Walls for Shafts of Mines and other such Places.
Year: 1891

page_text: Date of Application, 21st Dec.. 1891-Accepted. 23rd Jan., 1892
COMPLETE SPECIFICATION.
Improvements in the Construction of Walls for Shafts of Mines and
other such Places.
A communication from the JOINT STOCK MINING COMPANY, trading under the
le of Gutehoffnungshütte, of Oberhausen, in the Empire of Germany.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., 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 relates to the construction of walls of shafts or the like, all parts
of a wall of this construction being suitably connected in every plane or direction.
The wall consists of standards and plates arranged between the standards in such
a manner that one joint extends throughout the length of the wall.
In the accompanying drawings
Figure 1 is a front view of portion of the improved wall.
Figure 2 is a plan thereof, and
Figure
3 is a horizontal section of the plates inserted between the standards and
forming the joint.
Figure 4 is a horizontal section of one of the several standards showing the way
in which they are connected with the intermediate plates.
Figure 5 is a shoe, represented in different views, which is applied to the lower
end of each of the standards, to afford it increased security.
Figures 6 and 7 illustrate a modification of the wall represented in the preceding
figures.
Then
As will be seen from Figures 1 to 4, the standards employed in the construction
of this wall consist of double T iron bars which, to be securely driven in in the
required place, are cach provided with a shoe such as is shown in Figure 5. The
first thing in constructing the improved wall is therefore to drive into the ground,
at the desired distances apart, the double T shaped standards or rails a.
the intermediate plates which are to form the wall proper, are inserted between
the standards. Guide-rails c are secured to the vertical edges of the plates b, in
such a manner that they engage with the angle irons d rivetted or screwed to the
standards a.
The junction between the plates and the standards a is clearly illustrated in
Figure 4.
Owing to the peculiar shape and mode of guidance of the plates 6 along the
standards a the one joint thus formed extends throughout the height of the wall.
The plates may as shown in Figures 3 and 7, either consist of one single sheet of
metal, or be composed of two such sheets.
In the former case the metal sheet is provided in the centre with a stiffening
When each wall b
piece such for example as a rail e suitably rivetted thereto.
consists of two sheets, a wooden beam may be interposed to strengthen the two
sheets along their line of junction as in Figure 7.
The features which the various constructions shown have all in common are: the
construction of the wall in sections, and its composition of two classes of fittings,
riz. standards a and plates or walls b, each driven in or secured in place separately,
and the former serving as guides for the latter.
The standards a give the wall the required strength or resistance, while the
sheets form the wall proper and close the joints.
Figures 4 and 6 show two different arrangements for guiding the wall-plates b
along the standards a. It will, however be seen from the drawing that there is no
material difference between the two constructions. Many modifications may,
.

page_text: however, be made in the details without departing from the principle of the
invention.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondents, and in what manner
the same is to be performed, I declare that what I claim is:
--
In iron walls consisting of standards a and intermediate sheets or plates the
arrangement of guide-ledges such as e along the vertical edges of the plates b
engaging with guides such as d secured to the standards a by which means not only
two wall-plates or sheets are securely and reliably guided, but well closed joints
are obtained throughout the length of the wall.
Dated this 21st day of December 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.