Improvements in Metallic Air-tight Boxes and other similar Receptacles.IMILAR
Year: 1885

page_text: PROVISIONAL SPECIFICATION.
Improvements in Metallic Air-tight Boxes and other similar
Receptacles. .
We WALTER HENRY MOON of Exeter Street, New Swindon in the County of
Wilts, Soap Manufacturer, and ROBERT MOON of Avon Street, Temple, in the City
and County of Bristol, Tin Ware Manufacturer do hereby declare the nature of our
said Invention for "IMPROVEMENTS IN METALLIC AIR-TIGHT BOXES AND OTHER
SIMILAR RECEPTACLES" to be as follows:-
Our improvements relate to metallic boxes canisters, cases, and other similar
receptacles. The said improvements consist in constructing the box or other
receptacle in such a manner that the cover thereof is securely retained thereon, air-
tight, without soldering or other similar means.
In carrying out our improvements we solder or otherwise secure to the upper
edge of the sides of the box, a vertical rim or flange, the said rim or flange forming
an upward extension of the sides of the box. The lower edge of the said rim or
flange, where it is soldered to the box, is of the same diameter or dimensions as the
said box, but the said rim or flange tapers slightly upward so. that the diameter of
the upper extremity of the said rim is slightly less than that of the box to which it
is secured. The upper edge of the said rim or flange is turned or bent over inward,
forming a short internal flange with a groove between it and the body of the rim.
The flange or rim of the cover of the box exactly fits the upper end of the box
rim or flange, so that as the cover is pressed upon the box, the slight increase in
the diameter of the box rim or flange will cause the rim or flange of the lid to
expand a little and thus the cover is securely retained, air-tight, upon the said box.
The cover is also formed with a groove or channel, which, when the cover is forced
on fits over the bend and short flange on the upper edge of the rim of the box, thus
securing an air-tight connection on both the outside and inside of the rim of the
box. The said bend and flange on the upper edge of the rim of the box also
strengthen the said rim and support it against the pressure of the cover when the
said cover is forced on.
The covers of our improved boxes, canisters and other receptacles may be readily
removed by any flat or pointed instrument.

page_text: COMPLETE SPECIFICATION.
'Improvements in Metallic Air-tight Boxes and other similar
Receptacles.
We WALTER HENRY MOON of Exeter Street, New Swindon, in the County of
Wilts, Soap Manufacturer and ROBERT MOON of Avon Street, Temple in the City
and County of Bristol, Tin Ware Manufacturer do hereby declare the nature of our
Baid invention for "IMPROVEMENTS IN METALLIC AIR-TIGHT BOXES AND OTHER
SIMILAR RECEPTACLES" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement, reference
being had to the accompanying drawing forming a part of this specification:-
Our improvements relate to metallic boxes canisters, cases and other similar
receptacles and the said improvements consist in constructing the box or other
receptacle and its cover in such a manner that the said cover is securely retained
on the box air-tight, without soldering or other similar means, but can be readily
removed by tapping or striking it off the said box by any suitable instrument.
DESCRIPTION OF THE DRAWING.
Figure 1 is a vertical section of a metallic box and its cover constructed according
to our invention with the cover fitted on the box.
Figure 2 is a similar view of the said box with its cover detached.
Like letters indicate like parts in both figures.
In carrying out our improvements we provide the box A or other receptacle,
with a flange or collar B formed from a separate piece of metal and secured upon
the upper edge of the box or other receptacle. The said collar B has on its lower
edge a narrow shoulder b projecting outward and a short flange b' extends down-
ward from the outer edge of the said shoulder. The said shoulder need be only of
sufficient width for its underside to form a butting surface for the upper edge of
the body of the box A. The box A is so formed that its upper edge fits snugly
within the flange b¹ and sets or butts against the underside of the shoulder b and
the collar B is united to the box by soldering the said box to the flange b¹. We do
not however confine ourselves to this method of securing the collar upon the box
as the said collar may be secured upon the box by any suitable means which will
ensure an air-tight joint. The upper edge of the collar B is turned or bent over
inward as shown forming an internal flange b' tapered or inclined upward towards
the collar B the diameter of the said flange at its lower edge being slightly less
than at its upper extremity, a groove or channel 63 being thus formed between the
said flange and the collar B. This flange be forms a valve seat as hereinafter
explained and also serves to strengthen the collar B:
The lid or cover C of the box is formed with a flange or rim c and with a groove
or channel c¹ on its underside, the flange c forming one side of the said groove or
channel. The said groove c¹ in the cover is so formed and arranged that when the
cover is fully pressed down upon the collar B the said grove fits over and clips or
binds within it the bend and flange 62 of the said collar, the inner side or surface c²
of the groove o¹ binding closely upon the side or surface 6 of the flange 6 of the

page_text: collar. The surface c² of the groove thus acts as a valve and the surface 6 of the
flange b forms a valve seat. Thus when the lid or cover is pressed down into
position upon the collar B the valve formed by the sides of the groove is forced
into its seat formed by the inner surface 6 of the flange b' and air is effectually
excluded from the box or other receptacle.
The flange or rim c of the cover is so fitted to the collar B that the said flange
binds upon the said collar sufficiently to retain the cover upon the box and to
ensure that the surfaces c' and b* are kept in close contact.
The lower edge of the flange c is formed with a bead or equivalent device
which bead when the cover is on the box projects slightly beyond the flange b¹.
The cover can be readily removed from the box or other receptacle by tapping or
striking the under side of the bead ³ with any suitable instrument which may be
to hand.
The covers of our improved boxes or receptacles may be formed by striking them
out of single pieces of metal or they may be formed by other suitable means and
the form of the said lide or covers may be varied provided the essential features of
the cover, that is to say the rim or flange c and groove c', are retained.
The depth of the turn over or flange b³ may be varied as desired provided it is
of sufficient extent to form in conjunction with the groove c¹ in the cover an
effectual air-tight connection.
Our improvements can be applied to metallic boxes, canisters and other similar
receptacles of any size or shape.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is
First. In metallic boxes, canisters or other similar receptacles, the combination
of the collar B having internal flange b2 with the lid or cover C provided with
flange or rim c and groove or channel c¹ substantially as herein set forth.
Second. In metallic boxes, canisters, or other similar receptacles, the combination
of the collar B having internal flange b2 with the lid or cover C provided with
flange or rim c groove or channel c¹ and bead c³ or equivalent substantially as
herein set forth.
1000