Year: 1888

page_text: Date of Application, 18th June, 1888
Complete Specification Left, 16th Mar., 1889
Complete Specification Accepted, 20th Apr., 1889
1, THOMAS RAWSON, of No. 6 Wimborne Street New North Road Hoxton, in the
Parish of Hoxton Middlesex do hereby declare the nature of this invention to be
as follows:-
Tins that are to be closed so as to be absolutely tight are made in various ways,
with more or less of convenience and success.
In most cases the joint is made by soldering down the lid, with the inconvenience
that the tin has to be cut to open it.
Patents have been taken out for closing by an internal joint and also by an external
joint.
In this Patent I claim to combine the advantages of both these methods.
On the top of the tin I put first a ring of tin flanged into a U shape with the
corners square or rounded as may be preferred.
The outward flange fits closely to the top of the tin outside, to which it may be
attached by soldering if preferred and it forms the outside part of the joint.
The inside flange forms the inward part of the joint.
The cover fits exactly both outside and inside and forms when pressed tight down
an absolutely tight joint at each part.
In cans for paints or heavy goods where a handle is requisite I form such handle in
the usual way and attach it on each side on pivots so that for convenience of packing
it can be turned down.
For convenience of opening the tin when the lid has been forced down tight I make
this handle with two snugs, one on each side of the can, which when the handle is
forced down on the one side come under and force up the lid.
In order that the handle may only be forced down on that side which opens the can
when this is really wanted I put a snug or stop on, which stops the closing of the
handle on that side, the handle on the other side turning down freely.
When it is wanted to open the can, this snug which is pivoted on a center is turned
out of the way and then the handle can act at that side and open the can.
Dated the Eighteenth day of June 1888.

page_text: COMPLETE SPECIFICATION.
An Improved Method of Closing and Opening Canisters, Tins,
or Kegs.
I, THOMAS RAWSON, of 6 Wimborne Street, New North Road, in the Parish of
Hoxton, Middlesex, Engineer and Tool Maker, 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:-
Tins that are to be closed so as to be made absolutely tight are made in various
ways with more or less of convenience and success. In most cases the joint is made
by soldering down the lid, with the inconvenience that the tin has to be cut to open it.
Patents have been taken out for closing by an internal joint and also by an external
joint.
By my invention I combine the advantages of both these methods I put on the top
of the tin, a ring of tin flanged in a U shape with the corners square or rounded, as
may be preferred.
The outward flange attaches closely to the tin and may be soldered down or not as
is required. It forms the outside part of the joint, the inward flange forms the inward
part of the joint. The cover fits exactly both outside and inside and forms, when
pressed down, a tight joint at each part.
This part of my invention will be understood by reference to the annexed drawings,
in which at Figures 1 to 6 I show six examples of my ring A formed of U shape.
According to Figures 1, 2, 3, and 4, I make my rings with the opening of the
U looking upwards for the reception of a single thickness of flange or band of the
lid B so that said flange touches both inner surfaces of the U with a portion of the lid
sitting on the top of the U and making a tight joint at each part.
Figure 1 shows the ring A soldered directly to the inside of the canister, tin, or
keg
At Figure 2 the outer portion of the U is curled over to fit and be soldered to the
top edge of the tin canister or keg C.
In Figure 3, the U shaped ring has square corners, Figures 1 and 2 being
rounded.
Instead of the flange being on the lid of a single thickness, as at Figures 1, 2,
and 3, it may be formed U shape, as at Figure 4, so that the lid bears, when forced
home, not only against the two sides of the U but also at the bottom of the inner
surface, thereby touching three distinct parts.
According to Figures 5, the U shaped ring A is inverted, the lid B being shaped
to correspond, so that it presses in contact with the two sides of the ring A and on the
top to make a tight joint.
Figure 6 shows the same inverted U but made from the body of the tin C.
For cans used for paints, or heavy goods where a handle is requisite, I form such
bandle in the usual way and attach it on each side on pivots, so that for convenience
of packing it, can be turned-down. For-convenience-of-opening the can when the lid
-

page_text: has been forced down tight, I make this handle with two snugs, one on each side of
the tin, which when the handle is forced down on the one side, come under and force
up the lid. In order that the handle may only be forced down on that side when it is
really wanted to open the can, I put a snug or stop, which stops the closing of the
handle on that side, the handle on the other side turning down freely. When it is
wanted to open the can, this snug which is pivotted on a centre is turned out of the
way and then the handle can act at that side and open the can.
This part of my invention is represented at Figures 7, 8, 9, 10, 11, and 12 and
consists of fitting to the bodies of the cans used for paints or heavy goods, a handle D,
the lower ends of which where it is pivotted to the can C has a snug E, one being on
each side, so that when the handle is forced down in the direction shown by dotted
lines Figure 11, the snug E comes under the projecting edge or rim of the lid and
when a little pressure is exerted the lid is forced up for easy removal. The handle
may fall down close to the body of the tin C when folded in the opposite direction.
If the snug E be made like that shown at Figure 8, I use another snug F which
will prevent the handle falling over to the lifting side, except when the snug F is
turned out of the way, but by making the snug lower down or about level with the
pivot pin, as indicated at Figure 11, I can dispense with the snug F and yet allow
sufficient play for the handle D to fall over, or for the can to swing while being
carried without lifting the lid B.
In Figures 7, 8, 9, 10 and 12, I show part sectional views of my U ring A of
different shapes to those indicated at Figures 1 to 6 but in each case the lid is formed
to bear upon three surfaces of the U ring as described with regard to the earlier
Figures, the only difference being that according to Figures 1 to the lids have to be
lifted by a button, loop, or ring G, whereas in Figures 7 to 12, the lid can only be
raised by the snug E when the handle D is thrown over but the lids shown at
Figures 7 to 12 may be provided with buttons, loops, or rings, as at Figures 1, 2 or 3,
for removal after they have been raised by the snugs E.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. Making rings for the necks or mouths of canisters, tins, or kegs of U shape to
enable the lid or cover to form a tight joint by touching both inside and outside of
the Ushaped ring, as and for the purpose described and substantially as shown on
the annexed drawings.
2. Arranging a snug E in connection with a handle D of a canister, tin, or keg for
forcing up the lid when the handle is thrown over as above described and substantially
as shown on the annexed drawings.
1 1000