Improvements in or relating to Covers for Vessels and Receptacles.
Year: 1898

page_text: Date of Application, 23rd June, 1898-Accepted, 23rd July, 1898
Improvements in or relating to Covers for Vessels and Receptacles.
A communication from WLADYSLAW GINALSKI, of Novo-Kamiennaia, Russia, Civil
Engineer.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, 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 :-
The object of this invention is to replace the conical glass stoppers generally used
for closing in an air-tight manner glass-vessels, flasks, bottles, jars and other
receptacles, by covers of glass, earthenware or the like making a flat joint with the
receptacle and thus to simplify and cheapen the manufacture of such receptacles
and covers.
In the accompanying drawings,
Fig. 1 shows a receptacle A with a cover C according to this invention. The
upper part of the neck B is enlarged or flanged and is formed with a ground or flat
top surface D, for the joint as indicated in Fig. 2 by a series of circular grooves D.
The cover C may be made of various shapes as for instance shown in Figs. 1, 3, 4,
6 and 7. The cover consists generally of a round plate, say of glass of a diameter
which may be slightly greater than that of the neck of the vessel, and has an annular
ground flat under surface corresponding to that on the top of the neck of the receptacle.
At a slight distance from the circular edge of the ground ring of the cover there is an
annular or circular enlargement or flange d adapted to fit readily into the neck B of the
receptacle A, and prevent the cover from sliding or falling off, when the receptacle
is inclined. As it is possible that the air in the interior of the vessel may become
rarefied in consequence of a lowering of the temperature, in order to enable large
covers to be easily opened one or more small radial grooves a are provided extending
half the width of the annular ground surface D of the neck B on the inner side, and
similar radial grooves on the cover on the outside half of its ground ring. By
turning the cover until its groove coincides with that of the neck, the interior of the
vessel is placed in communication with the atmosphere. In all other positions there
In order to
is no communication between the outside and inside of the vessel.
enable the cover to be conveniently attached to the vessel by means of a cord, wire
or the like E (Fig. 3) there are recesses 6 (Fig. 2) made in the edge of the cover,
their number being from two to four according to requirement or to the size of the
cover. Corresponding recesses c may be also provided on the flanged edge of the
neck (Fig. 2). Instead of attaching the cover by a cord or wire, a curved or bent
spring of round, flat or square steel wire for g may be used (Figs. 6 and 7). By
placing the cover c so that the spring H is situated in line with the recesses c of the
vessel A or cover C (Fig. 1) and pressing down the raised edges of the spring H
so as to cause the ends to pass through the recesses c and below the edge of the
neck B and afterwards turning the cover C through say a ½ of a revolution a perfect
joint is formed between the cover and neck, and the vessel is closed in a strong and
efficient manner (Fig. 1). Vessels or receptacles with covers as described may be

page_text: advantageously used instead of the ordinary vessels, particularly for keeping
preserves and transporting fruits, chemicals, medicines and perfumery products.
The advantages of the new air-tight closing device are its cheapness as compared to
other devices, its ease of use and the diminution of size and weight of the cover.
Having now particularly described and ascertained the nature of the said invention,
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 closing device for jars, flasks or other receptacles comprising a cover provided
with an annular flat ground joint-surface corresponding to the ground surface of the
top of the neck of the receptacle and provided on its under side with an annular or
circular flange of a diameter smaller than the inside diameter of the neck of the
receptacle, the cover being provided with notches or recesses in its edge for the
fastening means such as wires, cords bars or spring plates with or without grooves
serving to place the interior of the vessel in communication with the atmospheric
air, substantially as described.
2. The combination and arrangement of parts constituting the complete closing
device for jars, flasks or other receptacles substantially as described or illustrated in
the accompanying drawings.
Dated this und da..
T1000