Improvements in Stoppering Jars, Mugs, and the like receptacles.
Year: 1898

page_text: Date of Application, 21st Feb., 1898-Accepted, 2nd Apr., 1898
COMPLETE SPECIFICATION.
Improvements in Stoppering Jars, Mugs, and the like receptacles.
I, PAUL SCHROEDTER, Merchant, of 65 Oranienstrasse, Berlin, in the Empire
of Germany, 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:-
This invention relates to that class of stoppers in which a cap is forced down on
to the top of the jar or the like by a screw working in a yoke fitting round and
bearing against the underside of the flange on the neck of the jar and consists in
the construction of the closing device, further in the shape of the top of the
receptacle fitted for the reception of the said closing device, and also in the various
particular details of the construction.
The invention is represented by the accompanying drawing, in which Fig. 1 is a
side elevation of a jug provided with the improved closing device.
Figures 2, 3 and 4 are a rear view, a front view, and a plan respectively showing
the top of a jug fitted with the closing device.
Figs. 5 and 6 are a rear view and a vertical section respectively of the top of the
jug.
Fig. 7 is a horizontal section through the top of the jug and Figs. 8, 9, 10 and 11
are detail views.
The closing device of the receptacle consists in the cover a, the locking yoke b
and the binding screw c. The cover a is provided with a tightening material
preferably with a cork d (Fig. 3) and has in its centre a small recess in which the
screw is intended to enter. Guiding cramp irons e are provided at the sides of the
cover and projecting on both sides of the yoke b. The legs of the yoke are in
this case straight and take a vertical direction. Yoke b acts as a nut for the
screw c and carries at both sides hooks or clamping pieces of which loosely engage
the projecting parts g of the receptacle h.
When the screw c is screwed down, the cover a is pressed down too and at the
same time yoke b is caused to rise.
By this action the upper edge of the container is pressed into the cork d while
the hooks fare firmly pressed against the projecting parts g, thus a thoroughly
air-tight closing is obtained in a very easy and quick manner. By unscrewing
the screw c the whole closing device can easily be separated from the
container h.
This closing device may also be connected with the receptacle or container h
by a hinged arm i in such a manner that it can be turned down.
This arm is connected with the receptacle h at k in such a manner that it
may be turned up, thus reaching with its top the vertical central axis of the
receptacle h and that of the closing parts a b c.
The upper ends i¹¹ of arm i having the shape of cramps enclose the top or
the nut like part of the yoke b and they are provided at their upper and lower
Yoke bis therefore rendered
parts with apertures for passage of the screw c.
capable of being rotated round its own axis in its suspended bearings i¹¹. This
being necessary in order to push its hooks ƒ sideways under the projecting

page_text: parts g or to disengage the same from these projections. In this case one of the
hooks f engages the corresponding projection g from the right and the other its
corresponding projection from the left.
For the purpose of engaging the projecting parts the yoke b may be turned
only through a small angle. But in order to limit this turning the cover a is
provided with additional projectious 7 which strike arm i in the open as well as
in the closed position of the cover, thus preventing yoke b from being unnecessarily
turned farther round. The projecting parts g are preferably constructed in such
a manner that their upper surface g¹ forms an inclined plane (Figs. 1—4).
As soon as the closing parts a b c and i are turned down in order to close the
receptacle the hooks f drop straight on the said projecting parts g and then they
afe automatically caused to slide down on the inclined plane gl and to take their
position immediately in front of the bottom faces of the projecting parts g, so that
only a slight turning by hand is required to bring the hooks into their right
closing position which is determined or limited by the additional projection l.
By slightly screwing down the screw the air tight closing of the receptacle is at
once effected.
The projecting parts g and the over-lapping parts k connected to the hinged arm i
may be directly cut into the receptacle h that is to say they may be of the same
material as the receptacle. But taking into consideration the manufacturing of
jars, jugs and the like it is preferable to make the said parts separately and to
attach them to the receptacle. To comply with this requirement the top part or
the head of the receptacle is constructed in a special manner (see Figs. 5 and 6).
This construction is characterised by two circular cornices mm between which at
the front or at any other part one or more recesses n are provided in the body of the
receptacle whilst at the rear one or both of the said cornices show a groove m!.
The projecting parts g and are now attached to the head of the receptacle thus
constructed by means of the ring o which being composed of several parts is to be
laid in the space between the two cornices m round the receptacle h.
This ring o is provided with terminating parts o¹ o¹ and o² o² and at the places of
its division it is bent at right angles.
To prevent this ring sliding in the direction of its axis it is engaged by an
embossed part o³ which takes into the recess n of the receptacle. The projecting
parts g having an inclined upper surface g¹ and smooth faces at the rear sides and
the bottom g² g3 g, are stamped out of a piece of metal and then bent into the right
form. The rear faces have two holes, through which the ends o¹ o¹ of the ring are
to pass and they are kept in position by means of a locking pin p or a screw or
any other device.
The bearing k for the hinged arm i is also stamped out of a piece of metal (Fig. 8)
and consists of the two top cheeks k¹k and the bottom bridge like and slightly
curved rib k². The lower end of arm i is held between the cheeks k¹ and the
pin q effects the hinge connection of the various parts. The bridge or additional
piece k² of the bearing is inserted between the body h of the receptacle and the
ring o, whereby the two cheeks k¹ at the rear rest in the groove m¹ of the
cornice.
The ends o² o² of the ring o are slightly bent at this point and its bent parts o
are tightly pressed to the said bridge k (Fig. 7).
As soon as the ends o² 2 of the ring o are rigidly connected to one another by
means of a tension screw r or by other means, the bearing k is firmly fastened to
the receptacle h.
The vertical displacement of the bearing k is therefore prevented by reason of
the bridge k² being pressed between the two cornices m and its displacement
laterally is rendered impossible on account of the overlapping pieces ¹ being
inserted in the groove m¹ of the cornice. This part may also be provided at its
bottom with a vertical central cross piece which engages a corresponding groove of
the bottom cornice. In the same or like manner as the bearing k, the projecting
parts g may also be attached to the receptacle h.

page_text: In order to enable the cover a to be cleaned in a convenient manner and the
cork d easily exchanged, the connecting arrangement of cover a with the closing
yoke b is preferably constructed in such a manner, that it is rendered possible to
take out the cover from the yoke. For this purpose the legs of the yoke are cut
out above their vertical inner edges ss, so far that the edges s¹ s¹ which are drawn
back may not be reached by the cramps e of the cover a. In case the screw c is
unscrewed so far that the cover a and its cramps e are able to be lifted higher than
the level of the bottom edges (Fig. 3) the cover a may easily be taken out of
the yoke b at one of the sides. When screw c however takes a lower position the
cover a is retained by the edges ss (Fig. 2). Finally a very good and especially
practical form of construction of the closing yoke is as follows:
This construction is characterised by the yoke being stamped out of one piece of
metal in the edge-way and also being provided with the nut like hole for the
screw C. The top surface of the yoke is cut out along the lines t t and t¹ t¹ and
then its middle part u is bent down taking the shape of a semi-cylinder, whilst the
top and bottom parts u¹ and u² are bent in the same fashion towards the other side
(Fig. 10). Afterwards the two inner faces of the three semi-cylinders u u¹ u² are
provided with screw threads. It will suffice however to cut out the top surface of
the yoke only once in its middle along the line v-v and to bend the parts w, w¹, in
opposite directions so as to form semi-cylinders (Fig. 11).
In this way it is not only possible to procure a very rigid yoke of great
resistance, but also an essential economy of material is effected because in such a
case the yoke may be made from metal plates of comparatively small thickness and
by one operation only.
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
1. A closing device for receptacles of all kinds characterised by the following
features that the cover a which is provided with tightening material for instance
with cork d is tightly pressed upon the mouth of the receptacle by means of the
screw c and a rigid closing yoke b whereby this yoke b engages by means of
hooks underneath the projecting parts g of the receptacle h and whereby the
cover a is guided in the vertical direction along the yoke legs by means of
cramps e.
2. A closing device for receptacle of all kinds according to the first claim being
connected with the receptacle by means of a reversible hinged arm i in such a
manner, that it may be at liberty to be turned down, further that it is kept, when
really closed, in a central position above the mouth of the receptacle and finally
that it is guided in this central position by suitable means.
3. In a closing device according to the second claim, the bearing of the hinged
arm, the additional piece 2 of which is pressed between the body h of the
receptacle and a closing ring o whereby any displacement of ring o or bearing k
is prevented, these parts being engaged in recesses n m¹ of the said body.
4. A receptacle h suitable for the closing device according to the Third Claim,
the top of which is provided with cornices m m, grooves m' in these cornices, and
recesses n in the body of the receptacle in order to facilitate the bearings k¹ and k²
engaging with the closing ring o and to prevent the latter from sliding in any
direction whatever.
5. In a closing device according to the first, or to second claim the application of
a closing yoke b being stamped out of one piece of metal in the edge-way and
having at its top flap-like cuttings u ul u² bent into semi-cylinders and provided
with screw threads for the reception of the screw c.
6. In a closing device for receptacle according to the first and second claims, the
connecting arrangement between cover a and yoke 6 capable of being easily
disengaged, characterised by the following features-that grooves 8' are provided
above the vertical inner edges s of yoke b, these edges being guided by

page_text: projections c of the cover a-thus allowing the latter to be easily taken out of the
yoke bat one side or the other, as soon as the screw c is unscrewed so far that the
guides e may be enabled to be raised above the level of the guiding edges s.
7. In a closing device for receptacles according to the first and second claims the
application of projecting parts g, the top surface of which forms an inclined plane g¹
thus effecting the automatical dropping of the yoke legs f into their lowest position
suitable for the closing of the said device.
1000