Improvements in Jar Closures.
Year: 1892

page_text: Date of Application, 28th Apr., 1892
Complete Specification Left, 24th Dec., 1892-Accepted, 11th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Jar Closures.
We, FRANZ GUILLEAUME, Manufacturer, and EWALD GOLTSTEIN, Engineer,
both of Boun, in the Kingdom of Prussia, do hereby declare the nature of this
invention to be as follows :-
:-
Our invention relates to the securing of jar-lids inserted into the top of the jars
and bearing against a shoulder formed inside of the same.
According to our improvement the jar is molded on the inside, above the said
shoulder, with a number of superposed notches or peripheral grooves, and a
resilient cross-bar, somewhat longer than the inside diameter of the jar, is
provided for.
After the lid has been put in its place together with an india rubber tightening-
ring, the resilient cross-bar is inserted into the jar while being bent down in the
middle, so that its ends engage in the said grooves, and it is pushed down (the ends
of the bar slipping during this procedure from one groove to the other) until it
presses upon the lid, the bar being then propped in between the walls of the jar
and the lid. Preferably the lid is formed with an upwardly projecting rim for
the bar to bear upon. For disengaging the bar it is provided at one end with a
ring whereby it may be drawn out of the groove in which this end is engaged.
Instead of a simple cross-bar, a resilient piece having the form of a star with
three or more arms, may be employed.
In case the jar and its contents are boiled after the jar has been closed, it is
advantageous, for allowing air to escape, to provide the lid with a perforation
which is closed after the boiling is finished, the closure requiring, however, to be
so arranged that the perforation nay easily be opened again for readmitting air
and thereby destroying the vacuum in the jar when the lid is to be raised. In
view of producing this closure with assistance of the said cross-bar, a resilient
tongue is attached thereto, adapted to press an india-rubber washer on the per-
foration.
Dated the 20th 1
11000
J. H. JOHNSON & Co.
COMPLETE SPECIFICATION.
Improvements in Jar Closures.
We, FRANZ GUILLEAUME, Manufacturer, and EWALD GOLTSTEIN, Engineer,
both of Bonn, in the Kingdom of Prussia, do hereby declare the nature of said
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention relates to the securing of jar-lids inserted into the top of the jars
and bearing against a shoulder formed inside of the same.
According to our improvement the jar is molded on the inside above the said
shoulder, with a number of superposed notches or peripheral grooves, and a
resilient cross-bar, somewhat longer than the inside diameter of the jar, is
provided for.
After the lid has been put in its place together with an india rubber tightening-
ring, the resilient cross bar is inserted into the jar while being bent down in the
middle, so that its ends engage in the said grooves, and it is pushed down (the ends
of the bar slipping during this procedure from one groove to the other), until it'
presses upon the lid, the bar being then propped in between the walls of the jar
Paine 11

page_text: and the lid. Preferably the lid is formed with an upwardly projecting rim for the
bar to bear upon. For disengaging the bar it is provided at one end with a ring
whereby it may be drawn out of the groove in which this end is engaged.
Instead of a simple cross-bar, a resilient piece having the form of a star with
three or more arms, may be employed.
In case the jar and its contents are boiled after the jar has been closed, it is
advantageous for allowing air to escape, to provide the lid with a perforation
which is closed after the boiling is finished, the closure requiring, however, to be
so arranged that the perforation may easily be opened again for readmitting air
In
and thereby destroying the vacuum in the jar when the lid is to be raised.
view of producing this closure with assistance of the said cross-bar, a resilient
tongue is attached thereto, adapted to press an india rubber on the perforation.
In the annexed drawing
Fig. 1 is a sectional elevation of the upper part of a jar provided with the
improved closure.
Fig. 2 is a top view corresponding thereto, and Fig. 3 a plan of the resilient
cross-bar in extended state.
In Figs. 1 and 2, b is the jar, a the lid and the resilient cross-bar. The jar is
formed inside with the conical shoulder 6', on which rests the lid a, having an
upwardly-projecting rim and provided with the india-rubber tightening-ring d,
lying in a groove of the lid. The jar has moreover the peripheral grooves g. The
resilient cross-bar c, constituted by a normally flat spring, is shown in the position
and inflected state in which it appears after it has been pushed down on the
projecting rim of the lid, its ends abutting, under these conditions, against the
ridge above the groove in which they are engaged, so that it secures the lid. For
disengaging and removing the cross-bar, it is provided with the ring e.
The aforesaid perforation of the lid, marked in Fig. 1 by the letter a³, passes
through a knob formed on the lid and by which the same may be lifted. The per-
foration is closed by the india-rubber washer i, which is held down by the resilient
tongue rivetted to the cross-bar c. For allowing the cross-bar to pass over the
knob, it is formed with a hole in the middle.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :
1. A jar-closure consisting in the combination, with a jar having inside a
peripheral shoulder and above the same a number of superposed grooves, of a lid
resting on said shoulder, and a resilient cross-bar longer than the inner diameter of
the jar, and which, on being bent down in the middle and forced into the jar,
engages with its ends in the said grooves and ultimately presses upon the lid,
substantially as described.
2. A jar-closure consisting in the combination, with a jar having inside a
peripheral shoulder and above the same a number of superposed grooves, of a lid
resting on said shoulder, and provided with a perforatiou, a resilient cross-bar
longer than the inner diameter of the jar, and which, on being bent down in the
middle and forced into the jar, engages with its ends in the said grooves and
ultimately presses upon the lid, the said cross-bar carrying a resilient tongue
adapted to press on the perforation of the lid, and an india-rubber washer placed
between the tongue and the perforation, substantially as specified.
J. H. JOHNSON & Co.,
Agents.