Year: 1898

page_text: We, ALEXANDER HARRISON, JOHN FORSHAW, Junr., and THOMAS TAYLOR, all
of 17 and 19, Brasenose Road, Bankhall, Liverpool, Manufacturers, do hereby
declare the nature of this invention to be as follows:-
This invention relates to those stoppers-usually formed of hard wood, ebonite,
or earthenware-which screw into a screw-thread formed on the inner surface of
a bottle neck, and comprise a screwed shank, a rubber washer and a projecting
head, the latter sometimes having a milled edge.
The said invention consists in forming upon the shank immediately below the
head a seating for the said washer.
"
Such seating may consist of a rib or belt whose contour approaches and may
be described as barrel shaped," that is to say, the contour of such belt is a
central or nearly central curve, struck with a considerable radius, tapering with
approximately straight lines on either side of such curve, the tapered portion
below the curve being somewhat longer than the tapered portion above the curve.
The total length or width of this belt is about equal to that of the rubber washer,
and is intended as an abutment or ground upon which such washer rests.
Other forms of the invention will consist:-in giving the seating a curved
contour throughout its length, that is to say, full in the centre and narrowing
towards the head and towards the shank; in making a groove in the central or
full portion of the seating in making the portion of the seating above said groove
perfectly cylindrical whilst the portion below the groove is conical or tapered to-
wards the shank; in making the seating conical or tapered on each side of the
groove, the upper cone usually of less depth than the lower.
The object of the seating formed as above specified is to give to the lower part
of the rubber washer an approximately conical shape, whereby the slight inequality
in the diameters of bottle necks-which is a common occurrence is provided for,
whilst the tapering on the upper side of the curve, or the groove in the center
of the seating serves to retain the washer in position.
Dated this 24th day of September 1898.
J. A. COUBROUGH,
Chartered Patent Agent,
10, St. George's Crescent, Liverpool,
Agent for the Applicants.

page_text: Improvements in screw stopper Co
We, ALEXANDER HARRISON, JOHN FORSHAW, Junr., and THOMAS TAYLOR, all
of 17 and 19, Brasenose Road, Bankhall, Liverpool, Manufacturers, 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 those stoppers-usually formed of hard wood, ebonite
or earthenware-which screw into a screw thread formed on the inner surface
of a bottle neck, and comprise a screwed shank, a rubber washer and a pro-
jecting head, the latter sometimes having a milled edge.
The said invention consists in forming upon the shank immediately below the
head a seating for the said washer.
In the drawings hereto annexed are illustrated several examples of stoppers
according to our invention.
In Figure 1 the said seating consists of a rib or belt a whose contour
approaches and may be described as "barrel-shaped," that is to say, the contour
of such belt is a central or nearly central curve struck with a considerable
radius and tapering with approximately straight lines on either side of such
curve, the tapered portion below the curve being somewhat longer than the
tapered portion above the curve. Figure 1* represents, on a larger scale, the
contour of the belt shewn in Figure 1. The total length or width of this belt
is about equal to that of the rubber washer, and is intended as an abutment or
ground upon which such washer rests.
In Figure 2 the seating a possesses a curved contour throughout its length,
that is to say the contour is that of an arc of a circle, so that the belt is full
towards the centre and narrows towards the head and shank.
b
The stopper shewn in Figure 3 possesses the countour of that shewn in
Figure 1, a groove being formed in the central or full portion of the seating.
Figure 4 illustrates a stopper in which the portion of the belt a which lies
above the groove b is perfectly cylindrical whilst the portion below the groove
is conical or tapered towards the shank.
Figure 5 shews a stopper in which the seating a is conical or tapered on each
side of the groove b, the upper cone being of less depth than the lower.
The object of the seating formed as above specified is to give to the lower
part of the rubber washer an approximately conical shape, whereby the slight
inequality in the diameters of bottle necks-which is a common occurrence
is provided for, whilst the tapering on the upper side of the curve, or the groove
in the centre of the seating, serves to retain the washer in position.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is: -
1. The formation, upon a screw bottle stopper, of a seating, a, for the rubber
washer thereof, the characteristic feature of said seating being its "barrel" like
contour, substantially as and for the purposes described with reference to
Figures 1, 1, and 2, of the drawings hereto annexed.
2. The formation in the washer-seatings of screw bottle stoppers having the
contour herein described and illustrated, of a groove, b, substantially as and for
the purpose herein described with reference to Figures 3, 4, and 5, of the
drawings hereto annexed.

page_text: 3. Screw bottle stoppers having their washer-seatings shaped substantially as
and for the purposes herein described with reference to the drawings hereto
annexed.
J. A. COUBROUGH,
Chartered Patent Agent,
10, St. George's Crescent, Liverpool,
Agent for the Applicants.