An Improvement in the Manufacture of Boxes of Tin Plates or other suitable Material wherein to Pack Comestibles or other Substances.
Year: 1892

page_text: Date of Application, 2nd Nov., 1892
Complete Specification Left, 2nd Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION
4+
An Improvement in the Manufacture of Boxes of Tin Plates or
other suitable Material wherein to Pack Comestibles or other
Substances.
I, FREDERIC BARNETT of No. 106 Queen Victoria Street E.C. in the City of
London Civil Engineer, do hereby declare the nature of this invention to be as
follows:
That by my improvement in the manufacture of opening boxes in tin plates or
other suitable material I obtain extreme simplicity both in the operation for packing
and unpacking without prejudice to or loss of their contents.
In the material of which such boxes are made in the upper part thereof will be
provided by proper machinery a spiral projection protruding outwardly with one
or more turns in such manner as to form a screw also in the cover for the boxes
there will by similar machinery be operated another thread of the same sort of
spiral which when the covers be placed over the boxes will by a turn or turns of
the cover effectually screw the covers to the boxes and when necessary almost
hermetically close the contents in the boxes and duly empty the same by the
reverse turning of the covers at the same time allowing the whole contents to turn
out without the least obstruction the boxes having suffered no detriment cau serve
many times by the simple method of closing no soldering or other similar method
of closing the contents being necessary.
If the contents of the boxes should occasionally be of a moist nature there should
be placed in the covers a thin sheet of cork, indiarubber or impermeable substance
and so adjusted that when the covers are screwed on they will effectually prevent
the escape of any moisture or allow any to enter to the detriment of the contents
of the boxes. India rubber may serve especially for some substances as being
unaffected by acids or alcalies.
To render the contents of the boxes safe against invasion from extraction or
unjust tampering the titles of the contents should be printed on adhesive paper or
other suitable material so as to adhere over the joint of the boxes and covers.
haw and 1892
FREDERIC BARNETL
COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Boxes of Tin Plates or
other suitable Material wherein to Pack Comestibles or other
Substances.
I, FREDERIC BARNETT of No. 106 Queen Victoria Street, E.C. in the City of
London 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:-
By my improvement in the manufacture of boxes in tin plates or other suitable
material I obtain extreme simplicity both in the operation of packing and unpacking
without prejudice to or loss of their contents.
In the material of which the boxes are made in the upper part there will be
provided by proper machinery a helical projection protruding outwardly with one
or more turns in such manner as to form a screw also in the covers for the boxes
there will by similar machinery be operated another thread of the same sort of
helix the covers being placed over the boxes will by a turn or turns of the cover

page_text: effectually screw the covers to the boxes and when necessary almost hermetically
close the contents in the boxes and duly empty the same by the reverse turning
of the covers at the same time, allowing the whole contents to turn out without the
least obstruction, the box having suffered no detriment, can serve many times by
the simple method of closing, no soldering or other similar method of closing the
contents being necessary.
If the contents should occasionally be of a moist nature there should be placed
in the cover a pellicle or disc of india rubber or other impermeable material and so
adjusted that when the covers are screwed on they will effectually prevent the
escape of any moisture. India rubber will be as good as any material being
unaffected chemically by either alkalies or acids.
To render the contents of the boxes safe against the extraction of same or other
unjust tampering the titles of the contents printed on adhesive paper or other
suitable material should be made to adhere over the joint of the screw and part of
the boxes.
In the manufacture of my boxes of whatever size they will be round and of the
same diameter from bottom to top of the boxes the covers about the same diameters
but allowing the slight difference to close over the boxes for screwing over them of
whatever size.
In order to ensure a perfectly hermetical joint without cutting the padding
consisting of a thin sheet of india rubber, cork, gutta percha parchment, parchment
paper or other suitable sufficiently elastic material there will be thrown over
inwardly in the interior of the upper part of the boxes a thin rim of the material
composing the box about of an inch perfectly horizontal to the bottom of the box
which rim when the cover of the box is screwed down on it will hermetically close
the box and the rim in question will serve to prevent the tin edge of the box from
cutting the pad that will intervene so rendering the joint of the cover on the box
perfectly air-tight.
The form of constructing the boxes is here shown in the drawings.
Figure 1 shews the box complete with lid on.
Figure 2 is a part sectional side view of the box and Figure 3 a sectional view
of the lid.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :
,
A box of cylindrical shape having its upper end formed with screw thread and
with the edge turned over and inwards in combination with a cover adapted to
screw upon the box and provided with a disc of cork or other suitable material for
making a close joint against the top of the box substantially as set forth and made
of tin or other suitable material.
Dated this 2nd day of August 1893
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.