A MECHANICAL STOPPER FOR BOTTLES
Year: 1882

page_text: LETTERS PATENT to Carl Anton Stahlin of Stockholm in the Kingdom of
Sweden, Manufacturer for an Invention of A MECHANICAL STOPPER FOR
BOTTLES.
PROVISIONAL SPECIFICATION left by the said Carl Anton Stahlin at the
Office of the Commissioners of Patents on the 4th November 1882.
CARL ANTON STAULIN of Stockholm in the Kingdom of Sweden, Manufacturer,
"A MECHANICAL STOPPER FOR BOTTLES"
My invention relates to a mechanical stopper for closing bottles or phials, con-
sisting chiefly of india rubber, or other elastic substance, with a narrow protruding
collar round its lower part, which, when the stopper is compressed longitudinally
and thus expands in thickness, is pressed against the inner part of the neck of the
bottle and accomodates itself thereto, so that the bottle becomes absolutely air-tight
and the stopper is at the same time locked without any fastening arrangement
being required.
In the annexed sheet of drawings Figs 1 to 5 inclusive is shewn, by way of
example, a convenient arrangement of apparatus according to my invention, Fig 1
being a side view, Fig 2 plan, Fig 3 longitudinal section, Fig 4 cross section,
Fig 5 is a longitudinal section of the elastic part of the stopper.
The usual bottle-cork is replaced by a stopper a of india rubber, or other elastic
inaterial (of the length of an ordinary cork) with a narrow projecting collar 6 near
the base. The stopper a has a longitudinal hole c (Fig 5) and is drawn over a
hard metal bar d and over a socket e through which the bar also passes. At the
lower end of the socket e is a flange which retains the elastic stopper, and at its
upper end is a disc, large enough to cover the mouth of the bottle. The bar & at
its lower end is joined to a small plate f which supports the stopper a and at its
upper part is provided with screw threads. The nut g, which for convenient
handling has a milled edge or wings, or equivalent device, has a downward pro-
jecting cylindrical part which rests against the disc of the socket e; thus the disc
may be pressed down below the threaded part of the bar d if necessary. In order
that the bar & shall not turn when the nut is turned, a part i of the wall of the

page_text: socket e is curved inwards and a corresponding face or recess is cut out of the bar,
as shewn--or other arrangement for attaining the same end may be employed.
When the stopper has been put into the neck of the bottle, the nut g is screwed
down thus causing the small plate fto be drawn up towards the elastic stopper a
and, the rotation of the nut 7 being continued, to compress the stopper longi-
tudinally, whereby it is expanded and its collar b pressed against the neck of the
bottle. By this means absolute air tightness is attained and the stopper is at the
same time locked. When the bottle is to be opened, the nut must be unscrewed,
whereupon the stopper regains its original form, and can be taken out of the neck
of the bottle.
In order that the part of the stopper a at which the collar is situated may easily
expand in thickness when the stopper is compressed longitudinally, the material is,
at that place, made thinner, as shewn at k in Figs 3 and 5.
The invention is obviously susceptible of considerable modification without
departing from its distinguishing characteristics,-thus, for instance, as shewn in
Fig 6, the bar & may be surrounded by a spiral spring one end of which rests
against the bottom of the hollow the other end abutting against the flange of tho
Bocket 6.
The object of this spring is to aid the stopper in resuming its original
form when the nut is loosened with the view of getting the stopper out of the
bottle.
The metallic parts of the apparatus may be coated with nickel (silver) plating, or
in some other suitable manner for protective purposes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Carl Anton Stablin in the Great Seal Patent Office on the
3rd May 1883.
CARL ANTON STAHLIN of Stockholm in the Kingdom of Sweden, Manufacturer,
"A MECHANICAL STOPPER FOR BOTTLES
”
My invention relates to a mechanical stopper for closing bottles or phials, con-
sisting chiefly of india rubber or other elastic substance with a narrow protruding
collar round its lower part, which when the stopper is compressed longitudinally
and thus expands in thickness is pressed against the inner part of the neck of the
bottle and accommodates itself thereto, so that the bottle becomes absolutely air-
tight and the stopper is at the same time locked without any fastening arrangement
being required.
A stopper according to my invention is illustrated in Figs. 1 to 5 of the
accompanying drawings, Fig. 1 being a side view, Fig. 2 plan, Fig. 3 longitudinal
section and Fig. 4 cross section, Fig. 5 is a longitudinal section of the elastic part of
the stopper.
The usual bottle cork is replaced by a stopper a of india rubber, or other elastic
material (of the length of an ordinary cork) with a narrow projecting collar b near
the base. The stopper a has a longitudinal hole c (Fig. 5) and is drawn over a
hard metal bar d and over a socket e through which the bar also passes. At the
lower end of the socket is a flange which retains the elastic stopper, and at its
upper end is a disc large enough to cover the mouth of the bottle. The bar dat
its lower end is joined to a small plate f which supports the stopper a and at its
upper part is provided with screw threads. The nut g which for convenient
handling has a milled edge or wings, or equivalent device, has a downward pro-
jecting cylindrical parth which rests against the disc of the socket e, thus the disc
may be pressed down below the threaded part of the bar d if necessary. In order
that the bar & shall not turn when the nut is turned, a part i of the wall of the
socket e is curved inwards and a corresponding face or recess is cut out of the bar,
as shewn, or other arrangement for attaining the same end may be employed.
When the stopper has been put into the neck of the bottle, the nut g is screwed
down thus causing the small plate fto be drawn up towards the elastic stopper a
and (the rotation of the nut 9 being continued) to compress the stopper longi-
tudinally whereby it is expanded and its collar 6 pressed against the neck of the
bottle. By this means absolute air tightness is attained and the stopper is at the
same timo locked. When the bottle is to be opened the nut is unscrewed where-
upon the stopper regains its original form, and can be taken out of the neck of the
bottle.
In order that the part of the stopper a at which the collar is situated may easily
expand in thickness when the stopper is compressed longitudinally the material is,
at that place, made thinner, as shewn at k in Figs. 3 and 5.
In some cases as shown in Fig. 6, the bar & may be surrounded by a spiral
spring one end of which rests against the bottom of the hollow & the other end
abutting against the flange of the socket e. The object of this spring is to aid the
stopper in resuming its original form when the nut is loosened with the view of
getting the stopper out of the bottle.
Figs. 7 and 8 illustrate in longitudinal section and elevation respectively a
modified arrangement of apparatus according to my invention
This arrangement differs from the foregoing in that the india rubber stopper a
consists simply of a piece of india rubber or other elastic tubing without any

page_text: .
projecting collar. The upper end of a is enclosed within the short metallic tube b
formed in one witn or connected to, the disc n and the lower part of a is embraced
by the bent up rim of a metal plate c. This plate c is connected to the bar d so
that when the latter is drawn upward by the rotation of the milled nut g the
plate.c is also raised thereby expanding the tube a and effecting a tight closure of
the bottle to which the apparatus is applied. m is a plate or washer of bone, horn
or other suitable material the object of which is to obviate friction between the
nut g and disc n.
kis a ring or washer of india rubber and is designed for use with bottles that
contain soda water or other sparkling or effervescent liquids for the purpose of
preventing escape of gas while the nut y is being turned. is a spring for the
purpose described in reference to Fig. 6.
In the modification shewn by Figs. 9 and 10 the mode of attachment of the
elastic tube a to the disc n is somewhat different to the foregoing arrangement.
In this case the upper part of the tube is drawn over the socket c and is held in
place by an embracing ring b.
The nut instead of being milled is provided with wings as shewn in Fig. 10
The metallic parts of the apparatus may be coated with nickel (silver) plating or
in some other suitable manner for protective purposes.
Having thus described the nature of my said invention and the manner of
carrying the same into practical effect I would have it understood that what I
consider to be novel and original and therefore claim as secured, to me by the
herein before in part recited Letters Patent-is:— .
A mechanical stopper for closing bottles consisting mainly of a tubular piece of
elastic substance such as india rubber which by compression longitudinally is
caused to expand laterally and to press against the inner surface of the neck of the
bottle and to accommodate itself thereto so as to form an air tight closure to the
bottle, the stopper-being-at-the-same time: automatically locked by the expanding
screw and nut all substantially as above described with reference to and illustrated
under several modifications in the accompanying drawings.
In Witness whereof I the said Carl Anton Stahlin have hereunto set my
hand and seal this twenty fourth day of April in the year of our Lord one
thousand eight hundred and eighty three.
חום
ANTON
SMITETIT
CARL ANTON STAHLIN (4.5.)