IMPROVEMENTS IN THE CONSTRUCTION OF METALLIC PACKING CASES, AND IN THE MEANS FOR RENDERING THE SAME AIR AND WATER TIGHT AND FOR OPENING THE SAME
Year: 1883

page_text: LETTERS PATENT to Christian Henry William Steen Brodersen of 79 Leaden-
hall Street in the City of London for an Invention of "IMPROVEMENTS IN
THE CONSTRUCTION OF METALLIC PACKING CASES, AND IN THE MEANS FOR
RENDERING THE SAME AIR AND WATER TIGHT AND FOR OPENING THE SAME
"
communicated to him from abroad by Messieurs Braun and Bloem of
Düsseldorf in the Empire of Germany
PROVISIONAL SPECIFICATION left by the said Christian Henry William
Steen Brodersen at the Office of the Commissioners of Patents on the
26th July 1883.
CHRISTIAN HENRY WILLIAM STEEN BRODERSEN, of 79 Leadenhall street, in the
City of London, "IMPROVEMENTS IN THE CONSTRUCTION OF METALLIC PACKING
CASES, AND IN THE MEANS FOR RENDERING THE SAME AIR AND WATER-TIGHT, AND
FOR OPENING THE SAME," a communication to me from abroad by Messieurs Braun
and Bloem of Düsseldorf in the Empire of Germany,
Whereas the ordinary practice, in connection with tin and other air-tight boxes,
is to solder the same, the result being that, on being opened, tools must be used
which destroy the box, and, in case the box contains detonators, or other explosive
articles, the insertion of cutting tools is a very dangerous operation.
Now the object of my invention is to obviate such danger, and also to render the
box or case capable of repeated use, the destruction of the box not being necessary
when it is opened.
I construct such boxes of any ordinary form which allows of a flat top, where
the lid is fitted. The whole of the box is rendered air and water-tight by soldering
(or other usual means) except the lid. The lid is formed of a single sheet of metal,
and is fitted with a ring, staple, or other handle. This lid slides in grooves which
are formed on the upper side of the box. The formation of these grooves is the
essential feature of my invention, and they are so formed that the lid slides over
and past the groove at the near end of the box, the lid is then pressed downwards

page_text: and drawn backwards, and made to enter the groove at the near end of the box.
The lid is thus secured in the grooves on all four sides.
One or more staples is or are fitted on the box to which the lid is secured by
means of a piece of wire passed through such staples and the handle of the lid.
The lid is then made air and water tight by means of soft putty being pressed
into the joint, between the lid and the grooves. The putty being of such a nature
that it does not set hard, but continues soft for any length of time. But the
constituents of the putty do not form part of my invention.
When it is necessary to open the box, the wire is released, the lid is then pushed
forward until it is clear of the near groove, it is then slightly lifted and drawn
backwards. The box is then open without injury to the box and lid.
The improvements herein described are applicable to packing detonators and
other explosive substances, and also to the packing of many other articles and
substances.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Christian Henry William Steen Brodersen in the Patent Office
on the 25th January 1884.
CHRISTIAN HENRY WILLIAM STEEN BRODERSEN of 79 Leadenhall, Street in the
City of London IMPROVEMENTS IN THE CONSTRUCTION OF METALLIC PACKING
CASES, AND IN THE MEANS FOR RENDERING THE SAME AIR AND WATERTIGHT, AND
FOR OPENING THE SAME"-a Communication from abroad by Mess" Braun and
Bloem of Düsseldorf in the Empire of Germany
Whereas the ordinary practice, in connection with tin and other air-tight boxes,
is to solder the same, the result being that, on being opened tools must be used
which destroy the box, and in case the box contains detonators or other explosive
articles, the insertion of cutting tools is a very dangerous operation.
Now the object of my invention is to obviate such danger and also to render the
box or case capable of repeated use, the destruction of the box not being necessary
when it is opened.
I construct such boxes of any ordinary form which allows of a flat top, where
the lid is fitted. The whole of the box is rendered air and water-tight by soldering
(or other usual means) except the lid. The lid is formed of a single sheet of metal
and is fitted with a ring, staple or other handle. This lid slides in grooves which
are formed on the upper side of the box.
The formation of these grooves is the essential feature of my invention and they
are so formed that the lid slides over and past the groove at the near end of the
box the lid is then pressed downwards and drawn backwards and made to enter
the groove at the near end of the box. The lid is thus secured in the grooves on
all four sides
One or more staples is or are fitted on the box to which the lid is secured by
means of a piece of wire passed through such staples and the handle of the lid
The lid is then made air and watertight by means of soft putty being pressed
into the joint, between the lid and the grooves
When it is necessary to open the box the wire is released the lid is then pushed
forward until it is clear of the near groove, it is then slightly lifted and drawn
backwards The box is then open without injury to the box and lid
The improvements herein described are applicable to packing detonators and
other explosive substances and also to the packing of many other articles and
substances.
And in order that my said invention may be clearly understood reference is
hereby made to the accompanying drawings, in which similar letters of referenco
indicate corresponding parts
Fig. 1 is an external view in perspective of a metallic packing case constructed
in accordance with my invention and closed Figs. 2. 3 and 4 are sections with the
grooves very much widened in order to explain the invention more clearly a is
the body of the case. b is the sliding lid. cc are the two side grooves under both
of which the lid slides e is the groove at the farther end of the case and is the
near groove g is a small ring soldered to the case as shewn in Fig. 1 h is the
handle for moving the lid and k is a wire to secure the lid when shut.
Fig. 2 shew's the lid 6 partly open, the two sides being partially held in the side
grooves c. c; (Fig 1). In Fig. 3 the lid has been pushed forward as far as it can
be and the handle being pressed downwards to the position shewn, it is then
pulled back to the position shewn in Fig. 4. The wire is then added as shewn in
Fig 1 and the case is then secure.
Soft putty is used in the grooves to render the same air and water-tight.

page_text: When the box is required to be opened the wire is removed. The lid is then
pushed forward to the position shewn in Fig. 3 then raised slightly to clear the
groove and drawn backwards as shewn in Fig. 2
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:-
1 The method and means of constructing metallic packing cases and rendering the
same air and water tight for the purposes and in manner substantially as hercin-
before described and shewn on the drawings
2 The manufacture and use of metallic packing cases constructed in manner
substantially as herein before described and shewn on the drawings
In witness whereof I the said Christian Henry William Steen Brodersen have
hereunto set my hand and seal this twenty fourth day of January in the year of
our Lord One thousand eight hundred and eighty four
CHRISTIAN HENRY WILLIAM STEEN BRODERSEN (L.S.)