An Improved Air-tight Closure for Sheet Metal, Glass, Porcelain, or other Vessels.
Year: 1890

page_text: Date of Application, 20th Feb., 1890-Accepted, 5th Apr., 1890.
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COMPLETE SPECIFICATION.
An Improved Air-tight Closure for Sheet Metal, Glass, Porcelain,
or other Vessels.
I, HEINRICH CARL FRIEDRICH NOLTE, of the Town of Gifhorn in the German Empire,
Manufacturer, do hereby declare the nature of my said invention, and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention relates to an improved air-tight closure for sheet metal, glass,
porcelain or other vessels, by means of which an extraordinary easy closing is
attained, (the opening being effected with as much ease,) my,invention.being especially
suited for fruit and preserve vessels or glasses.
A soldering of the closure is not necessary, the said closure consisting of a simple
lid which is connected to the walls of the vessel by means of an india rubber ring and
a metallic bow or strap.
In order to facilitate the connecting of the lid to the vessel, both lid and. upper
edge of the vessel are made with their peripheries of angular, semicircular or other
form, both parts being so connected by a suitably formed metallic strap or bow that
the surfaces of the lid and the vessel are firmly pressed onto each other and rendered
air-tight by an india rubber ring which is laid over or between the strap or bow and
the circumference of the lid and vessel.
In the accompanying drawing,
Figure 1 is the elevation of the upper part of a vessel with obtuse, angular, strap
or bow and a knee lever closure.
Figure 2 is a vertical ection of Figure 1 representing the obtuse angular form of.
the periphery of the lid and the upper edge of the vessel.
Figure 3 is a top view of the knee lever closing bow or strap, as represented in
Figure 1, in closed condition.
Figure 4 is a like view, the bow or strap in partially opened condition.
Figure 5 represents a strap or bow with lever locking device.
Figure 6 represents the strap or bow. pressed onto the india. rubber ring of. the
closure by means of a screw.
Figure 7. represents in elevation the semicircular form of the lid and upper part
of the vessel.
.
Figure 8 represents the same form of the parts and a strap or bow of corresponding
form with an inserted india rubber ring.
Figures 9 and 10 represent modified forms of the closure.
For closing the vessel a represented in Figures 1 and 2, the upper part of the said
vessol which is conically enlarged towards the upper edge a', whilst the conical form
of the lid 6 runs in opposite direction, I employ a bow d provided with a knee lever
locking device. The ends of the strap or bow d are connected by a link or arm e,
in such manner that the said arm or link e is connected at the one end to the
lug of the strap or bow and at the other end at h to the lever i.
In closing the vessel the lid is first applied and then an india rubber band c laid
round the same. The bow or metallic strap d is now arranged around and over the
india rubber band, and tightened up by bringing the point nearer towards the bow
or strap thus bringing the ends of the bow or strap so near to each other that the
same will press the india rubber ring or band firmly onto the lid or vessel.
By loosening the bow or strap d the lever i is pushed away from the bow or
strap, as shown in Figure 4, whereby the ends of the strap will be so pressed away
from each other that the same can be readily removed from the vessel, the india
rubber ring removed and the lid lifted off. In Figure 5 the knee lever for
tightening up the strap or bow is replaced by a simple bent lever n, Lugs l, m,

page_text: are arranged on the strap or bow d, the lug serving as fulcrum for the
bent lever n which when the same is turned for tightening the closure will
press the lug m towards lug and force the strap and the india rubber ring
tightly onto the lid and upper edge of the vessel.
The lever n is so formed that by simply turning the same so as to force the
lug m towards the lug / by means of the nose or projection m' a safe closure is
attained and permits the ready releasing of the closure by simply turning the
lever as shown by the dotted lines in Figure 5. In Figure 6 the strap or bow d
is firmly pressed onto the india rubber ring or band by means of the lugs o, p, and
the screw q.
In Figures 7 and 8 the edges of the vessel and the lid are made in semicircular
form. In this case an india rubber ring r is used instead of the india rubber band c
and is laid between the lid and the upper edge of the vessel. When the strap or
bow d which has the same section as the lid and upper part of the vessel is contracted
the lid d will be pressed onto the upper surface of the vessel thus compressing the
india rubber ring so as to form an air-tight closure. Figures 9 and 10 represent
modified forms of the lid and edge of the vessel. Figure 10 shows a modification
whereby instead of the form shown in Figure 9 the lid b and the upper edge a¹ of
the vessel are provided with a groove s in which the edges of the strap or bow gear.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
An air-tight closure for sheet metal, glass, porcelain and other vessels, in such
manner that the lid and the upper edge of the vessel are given such a form which
renders it possible by means of an india rubber ring placed around or between the
parts and a strap or bow which gears around the same to produce an absolute air-tight
closure, substantially as set forth in the foregoing specification, and illustrated in the
accompanying drawings.
Dated this 20th dow of Thou1000
H. C. F. NOLTE.
W. H. Beck, Agent,
Per S. E. Ganyon.