Improvements in the Manufacture of Bottle Stoppers.
Year: 1892

page_text: Date of Application, 15th Mar., 1892-Accepted, 16th Apr., 1892
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Bottle Stoppers.
I, JAMES SCOPE DAVISON of 4 Bigg Market Newcastle-on-Tyne, in the County
of Northumberland, Glass Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
In the Specification of a former Patent granted to me No. 10549 of the year 1887
I described the construction of screw stoppers with an elastic washer or disc
arranged between the upper part and the lower part of the stopper. Now my
present invention has reference to the construction of such stoppers as I will now
describe with reference to the accompanying illustrative drawings whereof
Figs. 1 and 3 are side elevations of such stoppers shewing different shapes for the
upper parts thereof;
Figs. 2 and 4 are plans corresponding respectively with Figs. 1 and 3; and
Fig. 5 is a view illustrating one way of placing the clastic disc on the stopper.
Fig. 6 is a detail hereinafter referred to.
The stopper body is formed in a single piece the upper portion a, a', whereof is
at its largest part a¹ of a diameter not exceeding that of the screw a³. The annular
recess into which the elastic washer or disc e fits is of considerable depth for
example equal in depth to its width, and the upper part of the stopper is made with
a transverse recess d (or recesses) to receive any convenient instrument for turning
the stopper. It may also for a like purpose be provided with a ring or bent piece
of wire e as shewn in Fig. 1. This ring may be formed by bending a piece of
brass, iron or other suitable wire e, approximately into the shape shewn in Fig. 6
and then forcing its ends into a suitable transverse hole e in the stopper. In some
cases however as for example in stoppers for bottles to contain aerated liquids this
ring is dispensed with. When the upper part of the stopper is formed for example
as shewn in Figs. 1 and 2, the placing of the elastic washer or disc in the recess
can be done with the aid of a pointed conical piece or mandrel of brass or other
material (as in Fig. 5) which may advantageously be made of considerable length
say about fifteen inches. The point of the conical piece is passed through the
central hole of the washer or disc which is then pressed along gradually till it slips
over the larger end of the conical piece on to the stopper body. The conical piece
is or may be made with a recess in its larger end into which the upper part of the
stopper is inserted, so that the washer c may pass direct from the conical piece into
the recess in the stopper body (Fig. 5). The washer or disc is of such diameter
that when in the annular recess it projects beyond the other parts of the stopper as
shewn.
The neck or portion a² of the stopper between the screw and the upper part is
made as narrow as may be consistent with sufficient strength to resist the twisting
strain.
I am thus enabled to employ, in a screw stopper of the kind referred to, a washer c
formed from a disc of india rubber, whereas heretofore, it has been usual to employ
rings resembling tubes, that is, of large depth relatively to their diameter, which
tube-like rings have, as is well known a tendency to crumple up or become damaged
when the stopper is being forced into the bottle. The head referred to in my former
Specification being dispensed with these stoppers can be used for stoppering aerated
liquids when filling by means of a machine.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is :-
1. My improved bottle stopper whereof the body is formed in one piece, with a

page_text: screw a³, a head a, a¹ of a diameter not exceeding that of the screw with a transverse
recess (or recesses) with or without a hole e*, and with an annular recess b, and a
washer or disc c of elastic material that fits into said annular recess and is of larger
diameter than the stopper body, whether such stopper be constructed according to
Figs. 1 and 2 or to Figs. 3 and 4.
2. In the manufacture of stoppers such as referred to in the preceding claim
placing the elastic washer or disc c into position on the stopper body by the use in
the manner described of a recessed conical piece such as illustrated in Fig. 5, and
described with reference thereto.
Dated this 15th day of March 1800
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.