Improvements in Smoking Pipes.
Year: 1893

page_text: Date of Application, 13th June, 1893
Complete Specification Left, 13th Mar., 1894-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Smoking Pipes.
We, JOSEPH DUNGWORTH, of 34 Bank Street, Sheffield, in the County of
York, Gentleman, and JOSEPH MITCHELL, of 14 Broom Close, Highfield,
Sheffield aforesaid, Engineer, do hereby declare the nature of our invention to be
as follows:
This invention relates to an improvement in smoking pipes of a very simple
character, but which enables the tobacco to keep dry and the pipe to be smoked
with comfort.
It consists in making one or more holes just above the stem of the pipe into the
bowl, so as to admit air, and in practice we find that one small hole is sufficient
for the purpose, causing the tobacco to smoke dry to the end.
We do not bind ourselves to make the hole precisely over the centre of the stem,
as we may make it on one side, and in the case of two holes we should make them
equidistant from the central position.
The invention applies equally to briar wood and clay or meerschaum pipes, and
we may insert a metallic lining, with or without a valve.
Dated the 10th day of June 1893.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Smoking Pipes.
We, JOSEPH DUNGWORTH, of 34 Bank Street, Sheffield in the County of York,
Gentleman, and JOSEPHI MITCHELL of 14 Broom Close, Highfield, Sheffield
aforesaid Engineer 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 an improvement in smoking pipes, such improvement
being of a very simple character but accomplishing a much desired result, namely,
enabling the tobacco to smoke dry to the end.
The annexed sheet of drawings illustrates the invention with a few modified
forms of same.
Fig. 1, is a pipe with the bowl shown partly in section, and having our invention
applied thereto.
Fig. 2, the same bowl with stem removed, showing a pivotted cover to air
entrance.
Fig. 3, ditto with adjustable sliding cover, over one or more holes. •
Fig. 4, ditto with series of circumferential air apertures.
The invention consists in constructing the bowl of the pipe with one or more
very small apertures A, or perforations for the admission of air, through the body
to the interior of the lower part of the bowl B, so as to admit one or more fine
streams or jets of air to aid combustion, and to dry up moisture, and in practice
we find that one of these small holes or air ports is sufficient for the purpose causing
the tobacco to smoke dry to the very end.

page_text: Although we prefer to use one aperture only and to place it above the stem S,
as shown in Figs. 1 and 2, we may vary the number and position if desirable, thus
we may make two apertures as shown in Fig. 3, either one above the other, or on
the same level and have a small sliding cover plate C, arranged to cover and
uncover one or both of such apertures, or as shown in Fig. 4, a series of apertures
may be made round the bowl so that jets of air will be drawn in all directions into
the incandescent tobacco. The apertures through the wood or other material of
which the pipe is made, may be lined with a piece of metallic tube.
Having now particularly described and ascertained the nature of our invention
and in what manner the same is to be carried into practice, we declare that what
we claim is :-
1. In a smoking pipe, constructing an air aperture from the outside of the
bowl into the lower part of the interior, either without or with a tubular
lining substantially as hereinbefore described and with reference to the drawings.
2. In a smoking pipe, constructing one or more air ports from the outside, into
the lower part of the interior of the bowl in combination with a tubular lining-and
a regulating cover, substantially as herein before described.
Dated the 9th day of March 1894.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.