AN IMPROVED AIR TIGHT JOINT FOR THE LIDS OF PAILS, OR OTHER VESSELS OR ARTICLES to be as follows:
Year: 1884

page_text: PROVISIONAL SPECIFICATION,
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex do hereby declare the nature of the invention for "AN IMPROVED
AIR TIGHT JOINT FOR THE LIDS OF PAILS, OR OTHER VESSELS OR ARTICLES
to be as follows:-
”
This invention has for its object a novel method of making instantly an air-tight
joint for the covers of pails, vases, waterclosets, and other vessels, the air-tight joint
being made by simply putting the cover in its place.
The joint itself consists essentially of a short elastic cylindrical ring of india
rubber or other suitable material, stretched round the edge of a thin rigid disc or
ring of somewhat greater diameter, in such manner that when the latter is inserted
into the elastic ring at the centre of its length, the two ends of the elastic ring
project upon each side of the rigid disc or ring, retaining their original diameter
whilst the centre between is stretched in order to fit it upon the thin disc. The
projecting parts of the elastic ring form lips and have sufficient resistance and
flexibility to form joints either against their ends or against their sides, according
to the method in which they are used.
The novel joint made as described with a thin rigid ring may be fitted into the
cover which is to be used, and can then be placed round the outside of the upper
edge of a pail or vase of any kind, with which it makes an airtight joint by its own
weight against the lower side of its upper flexible lip inside the cover.
Or it may
be placed inside the upper edge of the vessel, the joint being made by the lower
side of its lower flexible lip. In the latter case the upper lip is not required and
may be omitted, whilst in the latter case the lower lip may be omitted.
The latter arrangement, for instance may be applied to a pail or vessel used as
an inodorous closet, the cover being provided with a cushion so that it can serve as
a seat, and the elastic ring being fixed inside its lower edge by the inner rigid ring,
61

page_text: so that when the cover is in its place it makes an air tight joint between the upper
edge of the vessel and the inner side of the elastic ring, the part of which below the
latter is omitted.
Where the novel joint is applied to the binged lid of a watercloset, a rigid disc
instead of a ring may be used, the disc being fastened to the lower side of the
hinged lid, and making an airtight joint against the seat by the lower projecting
end of the elastic ring the upper end of which is omitted.
The elastic and flexible joint of the kind described, having a flexible lip above
or below, or both, may be applied to any purpose in which it is required to make
instantly an airtight joint between two surfaces.

page_text: .COMPLETE SPECIFICATION,
"
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex do hereby declare the nature of the invention for "AN IMPROVED
AIR TIGHT JOINT FOR THE LIDS OF PAILS, OR OTHER VESSELS OR ARTICLES
(a communication to me from abroad by Joseph Honoré Beaupied of Paris, in
the Republic of France) and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement and
accompanying Drawing:-
This invention has for its object a novel method of making instantly an air tight
joint for the covers of pails, vases, waterclosets, and other vessels, the airtight joint
being made by simply putting the cover in its place.
In the accompanying drawing, which is in illustration of the invention, figure 1
shews the principal parts in section.
The joint itself consists essentially of a short elastic cylindrical ring shewn in its
natural position partly in section a, b, c, d, of india rubber or other suitable material,
stretched round the edge of a thin rigid disc or ring e, f, g, h, of somewhat greater
diameter, in such manner that when the latter is inserted into the elastic ring at
the centre of its length, the two ends of the elastic ring project upon each side of
the rigid disc or ring, retaining their original diameter whilst the centre hetween is
stretched in order to fit it upon the thin disc as shewn in section at i, e, h. j.
The projecting parts of the elastic ring i, e, h, j, form lips i, e, and h, j, and have
sufficient resistance and flexibility to form joints either against their ends or against
their sides, according to the method in which they are used.
The novel joint made as described consisting of a thin rigid disc or ring having
an elastic ring stretched upon it may be fitted into the cover which is to be used
and can then be placed round the outside of the upper edge of a pail or vase of any
kind, with which it makes an air-tight joint by its own weight against the lower
side of its upper flexible lip inside the cover. Or it may be placed inside the upper
edge of the vessel, the joint being made by the lower side of its lower flexible lip.
In the latter case the upper lip is not required and may be omitted, whilst in the
latter case the lower lip may be omitted.
These two methods of arrangement are illustrated in figure 4 in which A, A, D, D,
is the elastic ring, stretched upon a rigid ring B, B, C, C, held inside the edge of
the cover to which the invention is shown applied. In the first method, the elastic
ring is shewn fitting over the outer edge of the vessel V the lower part at D not
being required; whilst in the second method the elastic ring is shewn fitting inside
the upper edge of the vessel S the upper part at A not being required. The parts
of the ring in section are shewn black.
The former method of arrangement may be applied to a pail or vessel used as an
inodorous closet as illustrated in figure 3, the cover being provided with a cushion
so that it can serve as a seat, and the elastic ring being fixed inside its lower edge

page_text: by the inner rigid ring, so that when the cover is in its place it makes an air-
tight joint between the upper edge of the vessel and the inner side of the elastic
lip A, A, B, B.
Figure 2 shows the novel joint, which forms the subject of the invention applied
to the hinged lid of a watercloset, a rigid disc e, f, c, d, instead of a rigid ring being
used the disc being fastened to the lower side of the hinged lid, and making an
airtight joint against the seat at a, b, by the lower projecting end of the elastic ring
the upper end of which is omitted.
The elastic and flexible joint of the kind described, having a flexible lip above or
below, or both may be applied to any purpose in which it is required to make
instantly an airtight joint between two surfaces.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
The method of making a joint for the lids of pails or other vessels or articles, by
means of an elastic and flexible ring, one part of which is stretched over a support
of larger size whilst the remainder projects and forms the joint, substantially as
and for the purpose described and shewn,