Improvements in Tin Cans or Receptacles.
Year: 1891

page_text: Date of Application, 7th Dec., 1891
Complete Specification Left, 2nd Sept., 1892-Accepted. 8th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Tin Cans or Receptacles.
1, WILLIAM PRATT, of No. 85 Congregation Street, in the City of Montreal,
in the District of Montreal and Province of Quebec, Dominion of Canada,
Tinsmith, do hereby declare the nature of this invention to be as follows:-
This invention relates to cans or receptacles constructed of tin or like material
and intended to be sealed after filling, opened and kept in use for some time.
According to the old construction an extra cover was provided to replace the
original which in its removal was damaged to such an extent aɛ to be of no further
use.
By my invention the original cover is retained and can be fitted into place.so.as
to effect a perfectly tight joint.
The invention consists in a tin can or receptacle, the cover of which, after being
soldered to the body, is removable therefrom, and capable of re-use, by the removal,
from cover and body, of a connecting strip which forms the portion of the body to
which said cover is soldered and is an integral part of such body; and when such
strip is removed, the edge of the body, from which it has been severed, and the
cover are in such condition as to allow of the easy fitting of such cover into
place.
Dated this 7th day of December 1891.
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Tin Cans or Receptacles.
1, WILLIAM PRATT, of No. 85 Congregation Street, in the City of Montreal,
in the District of Montreal, and Province of Quebec, Dominion of Canada,
Tinsmith, 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 cans or receptacles constructed of tin or like material
and intended to be sealed after filling, opened and kept in use for some time, the
original cover being retained for further use.
Heretofore the constructions for such purpose have been such as to render it
somewhat difficult to set the cover in place both at the time when the cover is first
secured to the body and after it has been removed, considerable difficulty being also
experienced in removing the cover after its insertion subsequently to the first
opening of the can.
My invention consists in making the cover with a peripheral rim shaped in part
to fit within the body and to rest upon the edge of same, the part fitting inside
being soldered to the body; and forming a beading of special cross section in such
body just below the portion to which the cover is soldered, which portion the same
as in other well known forms has an extended free overlapping end, whereby upon
taking hold of such free end and forcibly pulling upon same the portion of the body
above the beading will be detached along the line of the beading from the main
section of the body and from the cover rim to which it was soldered and the shape
of the beading and the rim of the cover make it possible to re-use the cover without
any degree of trouble.
For full comprehension however of the invention, reference must be had to the

page_text: annexed drawings forming part of this Specification in which like symbols indicate
corresponding parts and where
Figure 1 is a plan view of a blank showing the line of the beading and the
preferable manner of securing the extended free overlapping end for detaching
purposes;
:
Figure 2 is an enlarged transverse vertical section of such blank;
Figure 3 is a front elevation partly broken away of the can as originally
closed;
Figure 4 a similar view showing the connecting portion of the body partly
detached and
Figure 5 a similar view showing the can closed by the original cover after having
been opened by removing the connecting strip.
A is the cover of the can having an upwardly projecting peripheral rim presenting
a vertical portion a parallel to the sides of the can and a horizontal flange a¹ to rest
on the top edge of the body.
B is the body, formed from a blank such as shown in Figure 1 having a beading b
of the form or cross section shown in Figure 2 pressed in it, parallel with its top
edge and at such a distance below same as to mark off the upper portion B' of the
can (which portion is the connecting strip) at a depth about corresponding to that
of the vertical portion a of the cover rim. This beading b is of an obtuse or wide
V shaped form or cross section in the main but has a more acute depression or
extension at its apex, the formation of which extension slightly stretches or
abrades the coating or exterior of the metal and allows of the easy and uniform
detachment of the connecting strip B along the line of such apex.
It will also be noticed that the wide V shaped form of the bead serves to
strengthen the cans both before and after the severance of the connecting strip.
C is an extension at the end of the connecting strip B', which, when the ends of
the body are brought together overlapped (with the end having such extension
outermost) and soldered, remains free to project so that by drawing upon it in the
usual way by the use of the flat slotted key D, indicated in Figures 3 and 4, such
connecting strip is readily removed.
When. this is accomplished a clean smooth upper edge slightly flared is left upon
the body of the can and the cover is equally free from any abrasions or unevenness
that might interfere with its casy insertion into place and the attainment of a
perfectly tight fit between it and the body; and it will readily be seen that the
horizontal Hange a¹ make it very easy to remove the cover after it has been inserted
subsequently to the opening of the can.
I might also point out that in manufacturing the cans the cover and body can be
more readily fitted together owing to the peripheral rim of the cover being devoid
of plain edges for insertion as in former constructions.
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 tin can or receptacle, the cover of which is formed with a peripheral rim
shaped in part to fit within the body and to rest upon the edge of same, and the
body having an integral detachable connecting strip to which the inserted portion
of such cover is soldered, and means for detaching said strip as set forth.
2. A tin can or receptacle, the cover of which is formed with an upwardly
projecting peripheral rim shaped in part to fit within the body and to rest upon the
edge of same, the body having an integral detachable connecting strip to which the
inserted portion of such cover is soldered, and said strip having an extended free
end to furnish a holdfast for its removal.
3. A tin can or receptacle, the cover of which is formed with a peripheral rim
shaped in part to fit within the body and to rest upon the edge of same and after
being soldered to the body is removable therefrom and capable of re-use by the
removal, from cover and body, of a detachable connecting strip provided by an

page_text: outwardly pressed V shaped beading or depression in such body near its upper edge
adapted to be severed at its apex to allow the removal of said strip and present an
outwardly flaring edge for the easy re-insertion of said cover as set forth.
4. A tin can or receptacle, having upon its perimeter a beading the cross section
5 of which is of an obtuse or wide V shaped form, in the main, with an extended
acute apex, for the purposes set forth.
Dated this 2nd dex of September 1892
CARPMAEL & Co.,
Agents for the Applicant.