Improvements in and connected with the Manufacture of Sheet Metal Cans or Boxes.
Year: 1896

page_text: Date of Application, 11th Mar., 1896
Complete Specification Left, 10th Dec., 1896-Accepted, 23rd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in and connected with the Manufacture of Sheet
Metal Cans or Boxes.
I, FREDERICK WILLIAM FEAVER, of Long Walk, Bermondsey, in the County
of London, Tin Plate Worker, do hereby declare the nature of this invention to
be as follows:
This invention relates to the manufacture of sheet metal cans or boxes and has
for its object to provide means whereby the lids of cans or boxes may be fixed by
double seamed joints.
Heretofore in fixing the end of a tin can or box by means of a double seamed
joint made by dies it has been necessary to support the end on the inner side of the
box against the pressure required for performing the seaming operation, and it has
not been considered possible to fix both ends of a can or box by double scaming
without some internal support or arrangement.
According to this invention I provide for fixing lids of boxes both before and
after such boxes have been filled by means of a double seamed joint, and for this
purpose the sides of the box or can are grooved at a short distance below the upper
edge so as to form a rib upon which the usual flanged end may lie in proper
position for seaming.
In turning the edges of the box sides over to flange and form the usual double
seam, I provide dies one of which is adapted to open and shut and enclose the box
and it is provided with a projecting rib which will enter the groove in the sides of
the box and so ensure that the tin shall not be damaged or forced down when under
pressure.
It will be obvious that both ends of a box may be fixed if required in the
manner hereinbefore described.
One of the great advantages of this invention is that it enables tins or boxes.
filled with material to be closed without the employment of heat.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in and connected with the Manufacture of Sheet
Metal Cans or Boxes.
I, FREDERICK WILLIAM FEAVER, of Long Walk, Bermondsey, in the County
of London, Tin Plate Worker, 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 manufacture of sheet metal cans or boxes and has
for its object to provide means whereby the lids or ends of cans or boxes may be
fixed by don
eamed joints.

page_text: Heretofore in fixing the end of a tin can or box by means of a double seamed
joint made by dies it has been necessary to support the end on the inner side of the
box against the pressure required for performing the seaming operation, and it has
not been considered possible to fix both ends of a can or box by double seaming
without some internal support or arrangement.
According to this invention I provide for fixing lids or ends of boxes both before
and after such boxes have been filled by means of a double seamed joint, and for
this purpose the sides of the box or can are grooved at a short distance below the
upper edge so as to form a support upon which the usual flanged end may lie in
proper position for seaming.
In turning the edges of the box sides over to flange and form the usual double
seam, I provide dies having a projecting rib or stay which will enter the groove
in the sides of the box and so ensure that the box shall not be damaged or forced
down when under pressure.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a sectional elevation of a box constructed according to my invention
without the lid or top, and,
Figure 2 is a plan of the same.
Figure 3 is a view similar to Figure 1 but shewing the lid or top in position
for fixing and dies for supporting the box during the double seaming operation.
Figure 4 is a plan of the box and dies without the lid.
Figure 5 is an elevation of one end of a finished box.
Figure 6 is a section drawn to an exaggerated scale shewing the double seam.
a is the groove which is rolled or pressed in the sides of the 40x Cr can to form
a rib b upon which the flanged top c of the box is supported, as sewn in Figure 3
and in Figure 6, during the seaming operation.
d, d are dies adapted to receive the box between them and pid it, and e is the
rib upon the said dies designed, when the two dies are closed toether, to fit snugly
into the said groove a to support the box against the pressure which is applied in
the ordinary manner to fold the edge of the box over the flige of the top as
shewn in Figure 6.
1
It will be obvious that with the construction hereinbefore described no internal
support other than that afforded by the rib b with the dies therein is required.
Although one end of a box may be seamed in the ordinary manner, an internal
support being used, it is to be understood that both ends of a box may be seamed
according to my invention.
One of the great advantages of this invention is that it enables tins or boxes
filled with material to be closed without the employment of heat.
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. A sheet metal can or box having an internal rib designed to support the end
of the said can or box and an external groove for receiving the correspondingly
shaped rib of supporting dies, substantially as described.
2. Closing a sheet metal can or box by means of a seamed joint, the lid or end
being supported upon a rib within the can or box, substantially as described.
3. The manufacture and use of metal cans or boxes having one or both ends
affixed by seamed joints, substantially as herein before described and illustrated in
the accompanying drawing.
Dated this 10th da of Decembar 1000
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.