IMPROVEMENTS IN PIPES FOR SMOKING TOBACCO
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Joseph Koppenhagen at the Office
of the Commissioners of Patents on the 26th April 1881.
JOSEPH KOPPENHAGEN, of Oxford Street and Queen Street, Cheapside, London.
"IMPROVEMENTS IN PIPES FOR SMOKING TOBACCO."
The object of my improvement is to prevent the nicotine or oil produced from
the tobacco in smoking from reaching the smoker, and in some cases from coming
in contact with the bowl of the pipe, and also providing means for readily dis-
charging the nicotine and its accompanying fluids from the pipe. My improvement
can be applied to any structural form of pipe and any known material of which
they are usually made.
One form of the improvement consists in providing the bowl of the pipe near its
bottom with a reservoir composed of a transverse metal tube (or other suitable
material) for retaining the nicotine; this tube is made to pass through both sides of
the pipe bowl; the pipe stem is attached to one end of this tube, which may be made
of any desired material, shape, and design, and the other end of the tube, on the
opposite side of the bowl from the stem is furnished with a stop plug. The transverse
tube or reservoir in the bottom of the bowl is provided with a vertical branch tube
communicating with the tobacco chamber of the pipe; this branch tube is about one
quarter of an inch long, more or less, and just above its end the bowl or tobacco
chamber of the pipe is provided with a perforated diaphragm or bottom piece
usually made of clay or porcelain on which the tobacco lays.
With the pipe thus constructed and provided with a reservoir tube and its
appendages as described, when it is in use the smoke passes down through the
perforations in the diaphragm or bottom piece and into the reservoir tube and
through the stem to the smoker, and in the meantime the nicotine from the tobacco
and saliva from the smoker is collected and retained by condensation in the
reservoir tube, and thereby prevented from reaching the smoker and coming into
contact with the bowl of the pipe, and when the reservoir is partially charged
or filled with nicotine and saliva, it is discharged from it at the side of the bowl by
removing the stopper from the tube reservoir or in any other equivalent manner.
Fig. 1 of the accompanying Drawings represents the modification of the improve-
ment above described, showing the pipe bowl a in section, reservoir metal tube b,
Price Adl

page_text: branch tube c, perforated diaphragm or bottom piece f, stopper e, and stem d.
The reservoir tube b for ordinary purposes is made about one quarter of an
inch in diameter, more or less, and may be fit to the bowl in one or more
pieces.
Fig. 2 is another modification of the improvement, in which the bottom of the
pipe bowl is made to serve as a reservoir for the nicotine; the bowl a is provided
with a perforated .diaphragm or bottom piece f and outlet e for the condensed
nicotine and saliva.
Fig. 3 is another modification of the improvement applied to pipes usually com-
posed wholly of clay; in this modification the lower part of the pipe bowl a is
provided with a reservoir chamber b communicating with the bowl a of the pipe
and stem d as represented; the bowl is provided with a perforated diaphragm f,
as before described, also a discharge plug and opening e; other modifications of
the improvement will readily occur to persons skilled in the art.