Improvements in Air-tight Boxes, Cases, and other Receptacles.
Year: 1888

page_text: Date of Application, 21st Mar., 1888
Complete Specification Left, 17th Dec., 1888
Complete Specification Accepted, 22nd Jan., 1889
PROVISIONAL SPECIFICATION.
Improvements in Air-tight Boxes, Cases, and other Receptacles.
ISIDORE CLIFFORD L.D.S. R.C.S.E. Dentist 8 Grosvenor Street London W. do
hereby declare the nature of this invention to be as follows:-
A box case or receptacle of any shape or material that has a piece of india rubber
let into the lid where it touches the raised sides of the box case or other receptacle
or a box case or receptacle as aforesaid with the edges of the sides or the whole of the
sides made of india-rubber, thus avoiding the necessity of overhanging rims or screws
or the application of any method or means at present in use for making boxes cases
or receptacles air-tight which shall render the box case or receptacle to which the
invention is applied air-tight and powder-tight. The lid to be fastened to the box by
means of a hinge catch hook or other device.

page_text: I, ISIDORE CLIFFORD, L.D.S., R.C.S.E., Dentist, of 8 Grosvenor Street, London, W.
do hereby declare the nature of this Invention and in what manner the same is
to be performed, to he particularly described and ascertained in and by the following
statement, reference being had to the accompanying drawings and to the letters and
figures marked thereon, that is to say :-
My Invention relates to a simple, but efficient, means for rendering boxes, cases,
and other receptacles, air tight.
For the purpose of my invention I construct the lid of the receptacle with a recess,
channel, or depression, of the same shape as the lid, for the reception of a flat rubber
ring or band which, by preference, is cemented in place, so as to prevent it shifting
or becoming detached; or I provide the upper edge, or edges, of the body of the
receptacle with a rim, ring, strip, or band of rubber.
The mouth of the receptacle, to which this lid is applied, is preferably formed with
a lip or ledge arranged at a suitable angle, and against which the rubber ring or hand
impinges when the lid is closed.
And in order that my invention may be readily understood, I proceed to describe
the same with reference to the accompanying drawings in which:
Fig. 1 is a plan view of the underside of the lid of a box, shewing the rubber
ring or band in place. Fig. 2 is a cross section of the same. Fig. 3 is a vertical
section shewing the lid in place on the box, and Fig. 4 is a fragmentary view, in
plan, of the combined lid and box.
Fig. 5 shews a modified arrangement of the lip or ledge of the box.
A is the lid which, in the present instance, is attached to the box by means of a
hinge, but a detachable lid may be used. This lid is formed with a recess, channel, or
depression a, to receive the rubber ring or band B, which is, by preference cemented
in the said recess or depression a. The ring or band, when fitted in place, lies flush
with the edge of the underside of the lid, but, if necessary, it may project slightly
beyond the same.
In order to fully attain the object of my invention, I form the mouth of the box
with an inwardly projecting rim or ledge c (Figs. 3 and 4) set at a right angle to the
body of the box, and against this rim or ledge the rubber ring or band impinges
when the lid is closed, thus constituting a hermetic closure. Instead, however, of
forming the rim or ledge at right angles to the body of the box, it may be formed at
an obtuse angle thereto, so as to partially penetrate the rubber ring when the lid is
closed. This arrangement is shewn in fig. 5.
According to another improvement, I sometimes provide the upper edge, or edges,
of the sides of the box, case, or receptacle with a rim, strip, ring, or band of india-
rubber; in such instance the lid need not be provided with the rubber ring, or band,
although for greater assurance the said ring or band may be retained,

page_text: Although I have shewn in the drawings a case, box, or receptacle, together with
its lid, of circular form, I wish it to be understood that I can apply my invention to
boxes, cases, or receptacles, together with their lids, of square, elliptical, or other
form.
The lid may be retained on the receptacle by any suitable means, as for instance
by hinged catches or hooks d.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same may be performed, I declare that what I
claim is :-
1. The combination with the lid of a box, case, or other receptacle, of a flat
rubber ring or band fitted into a recess, channel, or depression formed in such lid,
and adapted to impinge against the mouth of the receptacle when said lid is closed, as
described and shewn, and for the purpose set forth.
2. The construction of the case, box, or receptacle with a rim, ring, or band of
rubber on its upper edge, or edges, and the employment of same in combination
with the lid provided with a corresponding ring or band of rubber, or not so
provided, as described and for the purposes set forth.
3. The means herein described and shewn for rendering boxes, cases, or other
receptacles, air-tight.
Dated this 17th day of December 1888
ERNEST DE PASS,
68, Fleet Street, London,
Agent for the Applicant.