Improvements in Tobacco Pipes.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Tobacco Pipes.
I JOHN THOMAS DAWES of Cefn-Mawr, Mold, in the County of Flint, Civil Engineer,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to provide a pipe which shall allow of ready insertion
or removal of absorbent or filtering material or substance into some part of the stem
or mouthpiece or into a chamber formed therein, such filtering substance being intended
to prevent Nicotine or other objectionable matter from passing into the mouth of the
smoker.
For this purpose I forin at some point in the stem or mouthpiece an opening leading
from the exterior into the bore of such stem or mouthpiece or into a chamber formed
therein and I close the said opening by a revolving, sliding, or hinged, cover or other
suitable closing device. When the cover is moved clear of the opening, the absorbent
or filtering material can be readily inserted or removed. The pipe can also be used
without the filtering material if desired.
I, JOHN THOMAS DAWES of Cefn-Mawr, Mold, in the County of Flint, Civil 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:-
The object of this invention is to provide a Pipe which shall allow of ready insertion
or removal of absorbent or filtering material or substance, into or from some part of
the stem or mouthpiece, or into or from a chamber formed therein, such filtering
substance bring intended to prevent nicotine or other objectionable matter from
passing into the mouth of the smoker.
For this purpose I form at some point in the stem or mouthpiece an opening
leading from the exterior into the bore of such stem or mouthpiece, or into a chamber
formed therein, and I close the said opening by a revolving cover. When the cover
is moved clear of the opening the absorbent or filtering material can be readily
inserted or removed. The pipe can also be used without the filtering material if
desired.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a longitudinal section, and Fig. 2 is a side view of a pipe constructed
according to my invention. a is an opening through the mount b and stem
of the pipe leading into a chamber c formed in such stem, such chamber
constituting part of the bore of the stem. d is a cover free to revolve around the
mount band provided with an opening e through which, when the cover d is revolved
so as to bring such opening e above the opening a, a piece of absorbent or filtering
material can be inserted into the chamber c. g are wires to prevent the absorbent
material being drawn into the bore of the mouthpiece. A further motion of the
cover d closes the opening a, and the pipe is then ready for use the piece of absorbent or
filtering material enclosed in the chamber acting as a kind of valve to prevent
objectionable matter passing to the mouth of the smoker, and also preventing saliva
from passing down into the stem and bowl of the pipe.
When the absorbent material becomes foul it is readily removed from the chamber c,
and a fresh piece inserted. I prefer that the opening a should be placed in the
position shown close to the junction of the mouthpiece and stem, but it may if
desired be formed in the mouthpiece particularly when a long mouthpiece is used,
the action of the absorbent being more effective the nearer it is to the mouth of the
smoker.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what I
claim is: -
The combination with the bore of a pipe, or with a chamber formed in such bore of
an opening a and a cover d for closing such opening, substantially as and for the purpose
.set forth.