IMPROVEMENTS IN PIPES OR TUBES FOR SMOKING TOBACCO
Year: 1884

page_text: I JOHN BENSON COOKE of The Hydropathic Establishment, Great Malvern in
the County of Worcester, Surgeon do hereby declare the nature of my invention
for IMPROVEMENTS IN PIPES OR TUBES FOR SMOKING TOBACCO and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to improvements in the construction of pipes and tubes,
such as cigar and cigarette holders, used by smokers of tobacco.
The object of my invention is to provide simple and efficient means for filtering
the smoke so as to reduce to a minimum the amount of nicotinous oil which enters
the mouth of the smoker.
Various means (such as plugs of porous clay and cotton wool) have heretofore
been tried for filtering tobacco smoke, but they have all one common objection, viz.,
that they so rapidly absorb the moisture in the pipe as to interfere with the free
draught through the stem, and finally to extinguish the pipe, not infrequently in
the course of smoking a single pipe.
According to my invention, I construct the stem of the pipe, or tube of easily
detachable sections, and I adapt to the interior of the pipe stem or tube one or
more diaphragms of filtering material, which diaphragms are held distended across
the bore of the pipe or tube by suitable means.
It is well known that if tobacco smoke from an ordinary pipe be blown through
a common cambric or silk handkerchief (a single whiff will be sufficient) a yellow
stain will indicate the place where the smoke has passed through the material, and
this stain is due to the retention of a portion of the nicotinous oil present in the
smoke.
In carrying my invention into effect I avail myself of this fact, and I arrange
within the stem or tube of the pipe or holder, one. or more filtering diaphragms,
which shall intercept the smoke on its way to the mouth of the smoker, and
deprive it of the greater part of the nicotinous oil.
The material which I prefer to use for my filtering diaphragms is cambric or
"swansdown" calico, but they might be made of linen, silk or other more or less
porous material arranged in diaphragms extending across the bore of the stem or
tube, and separated by air spaces.
In the accompanying drawing I have illustrated my invention as applied to a
tobacco pipe.

page_text: Fig: 115 a side view of a pipe partly in section constructed according to my
invention and
Fig 2 is a side view of two of the detachable sections of the stem, partly
separated, and showing the position of one of the filtering diaphragins.
Figs: 3 show, in edge and front views, a filtering diaphragm of disc form suitable
for my purpose. -
AA are the detachable sections of the stem, adapted to fit accurately the one
within the other.
B B are the filtering diaphragms of cambric or swansdown calico, or equivalent
material. I have shown the pipe as fitted with four of such filtering diaphragms.
These filtering diaphragms are interposed between the sections A, A, and are
retained in place by the said sections when in their normal position.
The diaphragms may consist of small pieces or layers of gauze, cambric, or other
material, and may be simply laid between the sections before fitting them together,
the latter act causing thein to become tightly distended across the bore of the stem
or they may be discs of such filtering material, and be distended by their own
stiffness or by a rim of metal or other stiffening material around the edge (after
the manner of an ordinary calico button) and be simply jammed between the
abutting ends of two of the sections. These filtering diaphragms B B may be
similarly adapted to holders for cigars or cigarettes.
I prefer to arrange these diaphragms at intervals of about to of an inch, and
their number will depend on the strength of the tobacco used by the smoker but
for all ordinary purposes, I have found 4 of such diaphragms sufficient.
I would particularly point out that these filtering diaphragms do not interfero
with the freedom of draught through the pipe. They are simple and inexpensive
and when overcharged with nicotinous oil, can be immediately removed and
replaced by fresh diaphragms.
When the soiled layers of filtering material are removed, they are seen to be
discoloured in varying degrees, that nearest the bowl being the most highly
coloured and charged, while that nearest the mouth piece is the least coloured.
The renewal of the filtering diaphragms is by no means necessary after smoking
a single pipeful of tobacco, but only after a considerable time according to the
strength of the weed and the habit of the smoker.
By my invention, smokers will be able to enjoy the full flavour of even strong
tobacco without experiencing its injurious effects, seeing that the nicotine will be
inhaled in greatly reduced proportions.
:
The accompanying drawing illustrates only one method of joining the sections,
viz by simple tubular sockets, but it is obvious that many other ways may be
devised for uniting the sections and fixing the filtering diaphragms across the bore
of the pipe or holder so as to intercept the smoke and deprive it, in its passage, of
soine or the greater part of its nicotinous oil.
It would also be possible to adapt the pipe or tube to receive a hollow
cylindrical frame or case fitted with two or more diaphragms separated by air
врасеѕ.
I would observe that the diaphragms might be treated with Liquor Potassæ
(Caustic Potash solution) or other fat-al-sorbing chemical substance or compound,
and so freed from all greasy material, which treatment would increase their
absorbent capacity.,
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
1. The adaptation to pipes or tubes for smoking tobacco, of one or more
easily removable diaphragins of filtering material as and for the purpose above
set forth.
2. A pipe or holder for smoking tobacco, constructed with detachable sections
such as A A, and with one or more readily removable diaphragms of filtering

page_text: material, such as B B, between the said sections, as and for the purpose set
forth.
3. The adaptation to pipes and tubes for smoking tobacco of one or more
diaphragms of chemically prepared filtering material, for the purpose of absorbing
the nicotinous oil as set forth.