Improved Air-tight Cover for Vessels or Receptacles.
Year: 1898

page_text: Date of Application, 25th Nov., 1898-Accepted, 4th Nov., 1899
Improved Air-tight Cover for Vessels or Receptacles.
I, AUGUST SCHMALENBACII, of Duisburg, in the German Empire, Manufacturer,
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement:―
The object of the present invention consists in an improved covering for the
air tight and water tight closing of receptacles of all kinds, which covering
distinguishes itself from those hitherto known, both by its easy manipulation,
as also by its entirely reliable action.
All the drawbacks which attach to the devices already known for a similar
purpose, are obviated in the present construction.
Keferring to the accompanying drawing in which the invention is illustrated
by way of example:-
Figure 1 shews a transverse section.
Figure 2 a view from above in the closed position.
Figure 3 the same in the open position.
Figure 4 a side view of the lid, and
Figure 5 a side view of the locking bolt.
l
To the receptacle a is attached the high projection surrounding the opening
thereof, and in which the revoluble closing ring c is placed (Figure 1). This
ring is provided with four projections e bent at an angle upwards (Figures 3 & 5).
The closing lid i, which is shaped to correspond to the shape of the piece b, but
is moreover provided with the inserted rubber washer k, also possesses at its
periphery four sloping or wedge-shaped projections (Figures 2 and 4). In
order to close the receptacle the lid is put in place, and the closing ring c is
revolved, on which the projections e of the said ring, which fit in corresponding
cavities of the piece b (Figure 3) engage over the projections of the lid i.
Owing to the sloping position of both sets of projections which moreover may
be in greater or less number according to the size of the closing device, the
lid with its rubber washer k is pressed upon the piece 6, and in this manner the
receptacle is closed air-tight.
The action of the closing device is as follows:-In order to prevent the lid
from revolving, one of the four sloping pieces arranged on the lid is cut out
for the safety bolt m. This bolt m is soldered to the top of the vessel as shewn,
and serves to prevent the cover from turning with the locking ring, as it passes
up through a hole in one of the lugs 7 (Figure 2). Further, the revoluble closing
ring is developed for the same purpose into the loop d which is also cut out as
shewn. Within the piece thus formed there is fitted a revoluble eccentrically
actuated disc f, which disc revolves upon the bolt g firmly attached to the
receptacle, and is provided with a square hole for a corresponding square key.
Further, there is attached to the disc f another perforated piece h engaging
under the edge of the piece d, and bent forwards and upwards. This piece h
has corresponding to it a similar piece h¹ fixed to the loop d. When the vessel
is closed, and the lid has been inserted, the displaced eccentric disc f (Figure 3)

page_text: is moved by means of the square key towards the safety bolt m. The handle of
the square key is bent to one side so that it facilitates its engagement at a right
angle to the axle of the eccentric disc f, and thus enables considerable pressure
to be exerted on revolving the same.
In consequence of the curved aperture of the loop the locking ring e will then
be turned, and at the same time the projections e of the closing ring c which
travel in corresponding cavities of the piece 6 (Figure 3) will be pressed against
the fixed projections of the lid, and the lid will consequently be firmly pressed
together with its washer k upon the projection b, thus producing an air and
water tight closure, which is reliable under all circumstances.
When the disc f is fully revolved, its projections rest against the projections /¹
of d, so that by the application of the seal u (Figure 2) attached through the two
holes of the projection, the unauthorized opening of the receptacle can be pre-
vented.
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
1. Improved closing device for vessels of all kinds, in which the closing is
effected by means of projections e, attached to a movable closing ring c which can be
pressed against corresponding projections attached to the lid i, which lid is
incapable of undesired motion, and in which the closing ring c is developed at
one side into a curved and internally cut out loop d, in the aperture whereof
slides an eccentric disc f, actuated by means of a square key, which disc on
being revolved effects a very firm pressure of the wedge shaped projection e
of the ring c upon the like projections of the fixed lid i, and thus causes an air
tight and water tight closure.
2. The improved closing device for vessels of all kinds, substantially. as herein
described and illustrated in the accompanying drawing.
Dated this 25th dow of November
1000
W. P. THOMPSON Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.