Improvements in Apparatus for Making Metal Boxes.
Year: 1891

page_text: Date of Application, 3rd Nov., 1891-Accepted, 5th Dec., 1891
COMPLETE SPECIFICATION.
Improvements in Apparatus for Making Metal Boxes.
I FREDERICK JOHN KING of 3-6 Camomile Street in the City of London
Merchant 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 :-
My invention has for its object to provide a simple and efficient apparatus
intended more particularly for making shallow metal boxes for containing small
articles and also for making lids for deep boxes.
According to my invention the body portion and the lid of the box are each
formed from a sheet or plate of metal the sides of the body or of the lid being
formed at one operation by first turning to right angles a portion of each side or
edge of the plate equal to the depth of the body or lid to be made and then folding
the projecting corners thus produced against the sides to complete the lid or body.
The lid of the box may be made the same depth as the body part but should be
made of sufficient size to fit snugly over the body part.
An apparatus constructed according to my invention is illustrated in sectional
elevation in Figure 1 of the accompanying drawings. Figure 2 is a transverse
section at right angles to Figure 1 of the block or “former "detached. Figure 3
is an inner face view of one of the sides of the "former." Figure 4 is a similar
view of one of the sides of the said "former" at right angles to that shewn in
Figure 3 and Figures 5. 6. 7 and 8 represent one of the corners of a lid shewing
the several stages in its formation.
"
The apparatus consists of a block or "former" A constituting the plunger of
a press which as illustrated in Figure 1 is a hand screw press, but if desired the
block may be fitted to a press worked by hydraulic or other power. This block
or "former is provided with four projecting edges or sides a a², b forming a
rectangular recess in the block of the size of the body or lid of the box to be
made. The two opposite projecting sides a a' are provided at right angles thereto
with curved projections c c which enter recesses d d in the ends of the sides, 12
spaces e being left between the projections ce² and the ends of the recess d² by
which the corners of the box are completed as hereinafter described. An anvil B
is arranged beneath the block A on which the plate h of the required size to
form a box lid or body is placed as shewn in Figure 1 suitable guides such as at y
being provided to ensure the plate being placed in correct position on the anvil.
When the plate is in position the block or "former' "A is caused to descend by
turning the screw C by means of the hand wheel or handle D and as it descends
the edges of the projecting sides a ab 12 of the "former force the projecting
edges of the plate h over the sides of the anvil B as shewn by dotted lines in
Figure 1 thereby forming the sides of the body or lid of the box as the case may
be. Projecting corners as shewn in Figure 5 are thus formed which corners
enter the spaces e between the projections c on the sides a a² and the ends of the
recesses in the ends of the sides b6 and as the former" further descends these
projecting corners by coming into contact with the curved and inclined portions k
of the projections care progressively folded against the sides of the body or lid
as shewn in Figures 6 and 7 and finally flattened against the upturned edge or
rim of the lid or body by the flat portions of the projections e as shewn in
Figure 8 thereby completing the body or lid of the box. The handle D is then
turned in the reverse direction so as to raise the block or former and as it rises the
lid or body of the box therein is forced therefrom by stationary rods / which pass
through holes in the block,
"

page_text: Instead of the block or former A being moveable as described the parts of the
pparatus may be reversed that is to say, the block or former A may be a fixture
ad the anvil or block B be forced thereinto by any suitable mechanism and the
apparatus may be arranged to work in a horizontal direction or at an angle if
desired instead of in a vertical direction as shewn.
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 :
1. The combination of parts constituting an apparatus for forming the body parts
or the lids of metal boxes by a single operation of the apparatus substantially as
hereinbefore described and illustrated in the accompanying drawings.
2. In an apparatus for making metal boxes and lids for boxes a block or "former"
having a recess corresponding to the size of the box or lid to be made and a block
or anvil for forcing into the recess in the "former" the plate of metal to form
the body part or the lid of the box substantially as hereinbefore described with
reference to the accompanying drawings.
3. In apparatus for making metal boxes and lids for boxes, the "former" A with
a recess therein having in the corners curved surfaces and spaces by which the
corners of boxes are formed a block er anvil for forcing the metal plates into the
"former" and means for expelling the finished articles from the recess in
the "former" substantially as hereinbefore described.
Dated this 3rd day of November 1891.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.