IMPROVEMENTS IN STOPPERING BOTTLES
Year: 1885

page_text: We, FREDERICK AUGUSTUS BIRD, of 100, Moor Street, Birmingham, in the
County of Warwick, Ale and Porter Merchant, and JOSEPH BEVERLEY FENBY,
of Sutton Coldfield, in the same county, Civil Engineer do hereby declare the
nature of our invention for IMPROVEMENTS IN STOPPERING BOTTLES to be as
follows:-.
The object of this invention is to facilitate the formation of the necks of bottles
having screw threads or inclines as described in our previous specifications of the
18th. of March, 1884, No. 5,043, and the 29th. of October, 1884, No. 14,280.
We have found that, to carry out the inventions for quick stoppering and
unstoppering of bottles set forth in the above specifications, it is not necessary
that the ends of the screw threads or inclines furthest within the neck of the
bottle should terminate with an abrupt or square end; and that the formation of
such an abrupt or square end, adds to the cost of the bottles.
Our present improvement consists in causing the screw threads or inclines to die
away gradually at their said inner ends. By reason of this improvement we are
able to use a simpler form of tool for shaping the bottle necks, and the said tool is
easier of manipulation.

page_text: We, FREDERICK AUGUSTUS BIRD, of 100, Moor Street, Birmingham, Ale and
Porter Merchant, and JOSEPH BEVERLEY FENBY, of Sutton Coldfield, in the
County of Warwick, Civil Engineer, do hereby declare the nature of our inven-
tion for IMPROVEMENTS IN STOPPERING BOTTLES 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 facilitate the formation of the necks of bottles
having screw threads or inclines as described in our previous specifications of the
18th. of March, 1884, No. 5043, and the 29th. of October, 1884, No. 14,280.
We have found that, to carry out the inventions for quick stoppering and
unstoppering of bottles set forth in the above specifications, it is not necessary
that the ends of the screw threads or inclines furthest within the neck of the
bottle should terminate with an abrupt or square end; and, that the formation
of such an abrupt or square end adds to the cost of the bottles.
Our present improvement consists in causing the screw threads or inclines to die
away gradually at their said inner ends. By reason of this improvement we are
able to use a simpler form of tool for shaping the bottle necks, and the said tool is
easier of manipulation.
In the accompanying drawings Figs. I and II represent the special form of tool
which we use to form the interior part of the neck of the bottle, and Fig. III shews
the bottle neck in section. Fig. I shews the tool in side elevation, and Fig. II is
an inverted plan shewing how the inclined grooves come out at the bottom of the
tool. The grooves are shaded.
When a bottle neck is formed on this tool the start a of each thread in the
bottle neck will be abrupt and of the form given to the end of the groove in
the tool; but the lower end of the thread in the bottle neck will die away
gradually to the full diameter of the neck.
This form of tool thus enables us to make bottles with necks which admit of
very quick stoppering and unstoppering, while the cost of manufacture is not mucli
more than that of plain necked bottles.
The drawing shews a tool having a double threaded screw, but for very wide
necked bottles three or more threads may be used.
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
The form of bottle neck described and illustrated, and the tool for forming the
Bame.
A I
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