Improvements in Air-tight Canisters, Jars, or Boxes for Storing Tobacco, Tea, Coffee, and similar Articles.
Year: 1889

page_text: Date of Application, 21st Nov., 1889
Complete Specification Left, 29th July, 1890-Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Air-tight Canisters, Jars, or Boxes for Storing
Tobacco, Tea, Coffee, and similar Articles.
1, PHILIP HOOкнAм of 7 & 8 New Bartholomew Street Birmingham Manufacturer
do hereby declare the nature of this invention to be as follows:-
I make the body of the metal canister by the usual methods preferably of
cylindrical form, but having a neck of the same depth as that of the lid, and of a
diameter about three sixteenths of an inch less than that of the body of the canister.
I burr over the end of the neck from the inside of the canister, so as to form a rim of
about one sixteenth of an inch.
I make the lid in the usual way, which is of the same diameter as the body of the
canister. Around the neck of the canister I spring a round or square india-rubber
ring of such a size as that when in position upon the neck of the canister it slightly
projects beyond the sides of the body of the canister. When the ring lies immediately
under the burred edge of the neck of the canister, if the lid be placed in position it
will rest upon the india-rubber ring, and under pressure from the hand, it will pass
over it, and, the ring rolling upon the neck of the canister, will travel with the lid,
until the lower edge of the lid meets the body of the canister.
Instead of forming the canister with a neck, the same, object may be attained by
throwing up a bead on the canister from the inside at a point corresponding with the
depth of the lid, which bead shall project around the canister to the distance of about
three thirty-seconds of an inch. In this case the lid is of a diameter about three-
sixteenths of an inch larger than the body of the canister, and the ring being inserted
between the lid and the canister, the lid travels upon it until it meets the bead.
If the receptacle is of earthenware, or cardboard, it is moulded or formed by the
usual methods to the same shape as described for a metal canister.
The ring may be solid, or formed out of a tube, and is not necessarily of a square
or round shape.
Instead of the ring travelling on the neck of the canister, may be fixed either on
the neck or in a groove upon the neck of the canister, but projecting sufficiently to
allow the lid to be forced over it by the hand; or again, the ring instead of being
round or square may be a flat band, the inner edge of which is permanently fixed,
preferably to the top of the neck, which may be burred over to hold it fast in its
place.
Dated this 2011 1
זג
·
1000
COMPLETE SPECIFICATION.
Improvements in Air-tight Canisters, Jars, or Boxes for Storing
Tobacco, Tea, Coffee, and similar Articles.
I PHILIP HOOкHAм of Nos. 7 and 8 New Bartholomew Street Birmingham in the
County of Warwick Manufacturer do hereby declare the nature of my invention and
the manner in which the same is to be performed to be particularly described
and ascertained in and by the following statement :-
My invention consists in making canisters jars or boxes airtight or practially
airtight by combining with the neck of the canister jar or box a vulcanized india-
rubber ring or band the said ring or band being used and the neck part and lid of
the canister jar or box constructed in the manner hereinafter described and illustrated
in the accompanying drawings.
I will describe and illustrate my invention in connection with metallic canisters.
ID 71

page_text: •
I make the body of the metallic canister by the usual methods preferably of a
cylindrical form but having a neck of the same depth as that of the lid and of a
diameter about three sixteenths of an inch less than that of the body of the canister.
I burr over the end of the neck from the inside of the canister so as to forin a rim
of about one sixteenth of an inch. I make the lid in the usual way which is of the
same diameter as the body of the canister. Around the neck of the canister I spring
a vulcanized india rubber ring circular or square in cross section and of such a size
as that when in position upon the neck of the canister it slightly projects beyond the
sides of the body of the canister. When the ring lies immediately under the burred
or turned over edge of the neck of the canister if the lid be placed in position it will
rest upon the india rubber ring and under pressure from the hand it will pass over
it and the ring rolling upon the neck of the canister will travel with the lid until the
lower edge of the lid meets the body of the canister.
Instead of forming the canister with a neck the same object may be attained by
raising a bead on the canister at a point corresponding with the depth of the lid which
bead shall project from the canister to a distance of about three thirty seconds of an
inch. In this case the lid is of a diameter about three sixteenths of an inch larger
than the body of the canister and the ring being inserted between the lid and the
body of the canister the lid travels upon it until it meets the bead.
The ring may be solid or tubular and need not be square or circular in cross
section.
Instead of the ring travelling on the neck of the canister it may be fixed either
on the neck or in a groove formed in the neck of the canister the said ring projecting
sufficiently to allow the lid to be forced over it by the hand.
Figure 1 of the accompanying drawings represents in elevation a metal canister
with its lid detached containing one of the arrangements of my invention and
Figure 2 represents partly in elevation and partly in section the canister closed and
made practically airtight by the use of my invention.
The same letters of reference indicate the same parts in the several Figures of the
drawings.
a is the cylindrical body of the canister and is the neck or contracted part of the
same the neck part 6 having the same depth as the lid c the said lid-c having the
same diameter as the body a as represented. The top of the neck part is made with
a rim e which is formed by bending outwards and downwards the top edge of the
said neck part as represented in the section Figure 2: fis the loose vulcanized india
rubber packing ring by the use of which in conjunction with the other parts of the
canister the said canister is closed airtight or practically airtight. This ring is
preferably made of a circular figure in cross section and is sprung on the neck of
the canister the said ring in its normal position fitting against the underside of the
rim e which acts as a stop as seen in Figure 1. The external diameter of the said
ring is such that when in its place on the neck it slightly projects beyond the sides
of the body a of the canister.
In closing the canister airtight or practically airtight by means of the lid c having
the same diameter as the body a the said lid c is passed onto the projecting ring f
and by the pressure of the hand the lid is passed to its place at the shoulder g of the
body. The first action of the lid c is to compress and slightly flatten the ring fand
the further motion of the lid after passing the ring gives a rolling motion to the
said ring on the neck and causes it to travel to the position represented in Figure 2.
On the lid reaching its closed position Figure 2 it is necessary in order to prevent
the lifting of the lid upon the neck by the compressed air within the canister to hold
down the lid for a short time. The canister is thus closed practically airtight by the
compressed ring of filling up or sealing the annular space between the neck and lid at
the point where the ring is temporarily stationed as seen in Figure 2. On removing
the lid c from the neck 6 the ring returns to the normal position represented in
Figure 1 against the rim or stop e by the back rolling of the said ring effected by the
sliding of the lid over the ring.
In order to avoid the holding down of the lid e after it has reached its closed

page_text: position as describer, the fastening arrangement represented in elevation in Figure 3,
plan of the body of the canister in Figure 4 and section of the closed canister in
Figure 5 may be employed. The fastening. arrangement consists in making at
opposite points in the lid e inwardly projecting studs h h made by pressure and
forming in the rim e at opposite points slots or cut away parts i i. On placing the
lid c on the neck b the studs h h are arranged opposite the slots ii in the rim so that
when the lid has been pushed home the said studs enter the slots i, i. By then
giving a slight twist or angular motion to the lid c the studs h h engage under the
rime and the lid is fastened down and the temporary holding down of the lid by the
hand hereinbefore referred to is avoided.
Figure 6 represents in elevation with the lid removed a metal canister containing
a modification of my invention and Figure represents the same partly in section
with the lid in position. In this case instead of using a loose packing ring of
vulcanized india rubber which has a rolling motion given to it by the lid I use a
stationary projecting ring k sprung in or cemented to the annular groove I made in
the neck of the canister, the said ring k being compressed by the passage of the lid
onto the neck b. In this modification the part which I have called the neck and
on which the lid slides and the body a have the same diameter and a raised beading m
is formed between the part 6 and the body a.
When receptacles or vessels are made of a non-metallic material such as
earthenware or cardboard, the said articles are made or constructed by the usual
methods of the shapes herein before described and represented with respect to metal
canisters.
Having now particularly described and ascertained the nature of my inven-
tion and the manner in which the same is to be performed I declare that I
claim as ny invention of "Improvements in airtight canisters jars or boxes for
storing tobacco tea coffee and similar articles"
:―
Making the said canisters and articles airtight or practically airtight by the use of
the combinations or arrangements of the parts herein before described and illustrated
in the accompanying drawings; that is to say, the combination with the neck or upper
part of the canister or article of a loose packing ring of vulcanized india rubber
having an external diameter somewhat greater than the body of the canister or article
and the combination therewith of a lid having the same diameter as the said body
the passage of the lid onto the neck to close the canister or article compressing the
loose packing ring and giving a rolling motion to it and thereby closing airtight or
practically airtight the neck part of the said canister or article substantially as
hereinbefore described and illustrated in Figures 1 and 2 of the accompanying
drawing; also the modification described with respect to Figures 6 and 7 for the
same purpose; also the combination with the packing arrangements referred to
of the parts marked e hi in Figures 3, 4, and 5 for fastening down the lid by a
twisting motion after the canister or article has been closed.
Dad it noth don of Ano 1800
PHILIP HOOKHAM.