A New or Improved Capsule or Cover for Capsuling or Closing- Metal Cans or other Vessels, and Process of Manufacturing same.
Year: 1894

page_text: Date of Application, 31st May, 1894-Accepted, 7th July, 1894
A New or Improved Capsule or Cover for Capsuling or Closing-
Metal Cans or other Vessels, and Process of Manufacturing
same.
I, FREDERICK JOHN TOMLINSON of 1 Upper Thames Street, London, E.C.,.
Manufacturer, 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 capsuling sealing stopping or closing of metal cans
such as cans for holding varnish oils paints etc. and my novel capsule or cover may
be also used for capsuling or closing other vessels or receptacles (either of metal
or otherwise) to which same may be applicable.
And in order that my present invention may be easily understood and readily
carried into practice I will proceed to fully describe same with reference to the:
drawings hereunto annexed.
Fig. 1 is a plan of a capsule or closing device or appliance according to my-
present invention.
Fig. 2 is a cross section on line 1-1 Fig. 1.
In order to produce capsules or covers for my purposes according to my present.
invention I proceed as follows:-
I take a sheet of suitable metal in the flat state (such as tin-plate-of a good
stamping quality) and I spread over this and firmly adhere thereto a sheet of any
suitable non-metallic or pliable material (such as paper, parchment, leather, sheet
rubber, textile fabric, or equivalent) these two sheets being laid together and firmly
joined by any suitable cementitious or adhesive material so that they practically
become inseparable.
Having thus prepared these sheets I now cut out or form stamp or press there--
from advantageously all in one operation the capsule or cover of the desired form
and shape ready to be applied to the metal can etc.-—for instance in Figs. 1 and 2
is shown a very suitable form and shape of capsule for closing varnish cans or for
the like purposes.
a is the metal sheet.
6 is the paper or equivalent material adhering to the metal sheet a and both of
which have been cut out and stamped up into the shape shown in Fig. 2 in the
same operation.
The material lying in the channel c on the underside of the cover thus forms a
packing or seal upon the top edge or mouth of the can and when the edges d have
been duly turned in by any suitable appliance or in any suitable manner on the
mouth or outlet so as to firmly close the edges d on to said mouth all round them
the lining in the channel c acts as a packing to make a tight joint i.e. liquid tight.
and air tight.
Figs. 3 and 4 are corresponding views to Figs. 1 and
modification.
respectively showing a.
According to this modified construction instead of placing the paper etc. all over
the underside of the metal sheet I propose only to paste or mount strips or rings e
of paper or equivalent in the channel c (instead of all over the underside of the
sheet of metal a) and such lining or packing e acts as before described to make a
tight joint in closing.
Caps or capsules thus made according to my present invention i.e. having the
packing material ready mounted and firmly attached on the desired part thereof to
make a tight joint or seal can be readily applied and quickly adjusted in proper

page_text: position and there fixed down by any suitable tool or appliance for turning in the
edges thereof or otherwise fixed in any suitable manuer on the mouth or outlet of
the can or vessel to tightly close same.
Whereas if the packing material is used separate from the cap or cover then
there is loss of time and difficulty in adjusting the cap or cover and the packing
separately in their proper positions and there fixing them.
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 capsule or cover for closing metal cans or other vessels consisting of a sheet
of paper and a thin sheet metal plate stamped up or otherwise formed into the
desired shape combined and adhering together substantially as and for the purposes
hereinbefore set forth.
2. The process of manufacturing capsules or covers of the character and for the
purposes described by laying and firmly adhering together a sheet of suitable
packing material such as paper and suitable sheet metal plate such as tin-plate
then stamping from same the said capsule or covers of the desired form ready for
closing the said cans or the like.
3. A sheet metal capsule or cover containing a suitable packing material
adhering to or mounted in that part of said metal cap where the seal or tight
joint is made on the mouth of the can or vessel to be closed substantially as and for
the purposes set forth.
4. The improved sheet metal cap capsule or cover arranged constructed combined
and acting substantially in the manner and for the purposes hereinbefore described
and illustrated by way of example in the drawings hereunto annexed.
2
Dated this 31st day of May 1894.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.