Improvements in Stopper- or Closure-devices for Cylindrical Vessels, Bottles, Pipes, and the like.
Year: 1894

page_text: Date of Application, 19th Sept., 1891-Accepted, 16th Feb., 1895
Improvements in Stopper- or Closure-devices for Cylindrical Vessels,
Bottles, Pipes, and the like.
A communication from LEOPOLD WALLACH, of Cassel, in the Empire of
Germany, Manufacturer.
I ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
Chartered Patent Agent, 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 a stopper closure device for bottles, syringes, sprayers
and the like, and is illustrated in the accompanying drawings, in which
Figure 1 is a longitudinal section of a syringe closed at each end by a cover
device constructed according to this invention.
Figure 2 is an elevation of a bottle-neck, showing the lugs or projections which
bold the stopper.
Figure 3 is a view of the underside of the closure-plate or stopper.
Figure 4 is a view of the upper rim of the bottle-neck or ring against the top of
which the closure-plate is adapted to fit.
Figure 5 is a view of a modification of the bottle-neck shown in Figure 4,
showing the lugs or projections as being made simply by the rim of the bottle-neck
being bent outwards to form a lip.
The essential feature of the invention consists in the formation, on the outside
edge of the glass metal or other cylinder or article, of lugs or projections N by the
aid of which the closure-plate V is secured thereto. The latter, which may be
made of metal glass hard rubber or other material, is provided with a recurved
circumferential edge in which there are one or more notches A corresponding to
the lugs (both in number and position).
The closure plate V is placed over the end of the cylinder or neck in such
manner that the lugs on the latter coincide with and engage in the notches of the
plate. Then by pressing upon the closure plate and simultaneously turning it in
either direction, the lugs enter into the groove formed by the recurved edge of the
plate, and the closure is complete.
If the closure is to be made water-tight or air-tight, a disc or washer G Fig. 1
of cork, rubber, or other suitable material is interposed between the cylinder-end
and the closure-plate V.
The before described closure plates are applicable to all kinds of pipes and in
these applications as in connection with bottles as indicated in the drawings, and
other similar applications in which the closure has to be complete, the plates are
not perforated.
Having now particularly described and ascertained the nature of the said inven
tion, as communicated to me by my foreign correspondent and in what manner the
same is to be performed, I declare that what I claim is :—
1. A stopper or closure device comprising lugs such as N with which a closure
plate such as V provided with a recurved circumferential border and corresponding
notches or slots is adapted to engage and by the partial rotation of which the
closure is effected substantially as described and illustrated in the accompanying
drawings.

page_text: 2. A stopper such as described in Claim 1 wherein the closure-plate is made
watertight or airtight by an interposed disc or washer substantially as described
and illustrated in the accompanying drawings.
3. A stopper such as illustrated in Figure 5 wherein the lugs are formed simply
by the wall of the cylinder-end being pressed outwards so as to form lips
substantially as described.
th day or September 1894.
W. P. THOMPSON & BOULT,
Of London, Liverpool, Manchester, and Nottingham,
Agents for the Applicant.