Improvements in Pipes for Smoking Tobacco.
Year: 1889

page_text: Date of Application, 29th Mar., 1889
Complete Specification Left, 24th July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Pipes for Smoking Tobacco.
I, THOMAS COLLIEU of 62 Moorgate Street, in the City of London, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to produce a pipe for smoking tobacco whereby
nicotine and other deleterious substances are prevented from passing into the mouth
of the smoker.
According to this invention I provide the bowl of the pipe with a chamber or
recess screwing on to the bottom thereof. This chamber or recess is covered at the top
by a perforated plate on the upper or smoking part of the bowl. Within the said
chamber place a pad of some soft absorbent material preferably medicated cotton
wool and provide a passage or channel at the bottom of the said chamber through
which the smoke passes into the stem of the pipe.
In operation, the sinoke percolates through the medicated cotton wool or other
pad and is thoroughly filtered and purified from impurities leaving the smoke cool
and pure. The perforations in the bottom of the smoking part of the bowl ensure
perfect and steady combustion of the tobacco with a gentle volume of smoke.
13
0th day of March 1889
$6
CASTLE SMITH,
Per F. W. Golby,
Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Pipes for Smoking Tobacco.
I, THOMAS COLLIEU, of 62 Moorgate Street, in the City of London, Manufacturer,
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 produce a pipe for smoking tobacco whereby
nicotine and other deleterious substances are prevented from passing into the mouth
of the smoker.
According to this invention, 1 provide the bowl of the pipe with a chamber or
recess screwing on to the bottom thereof. This chamber or recess is covered at the
top by a perforated plate formning the bottom of the upper or smoking part of the
Within the said chamber I place a
bowl which screws into the chamber or recess.
pad of some soft absorbent material preferably medicated felt or cotton wool, through
which the smoke passes, and provide a passage or channel at the bottom of the said
chamber through which the smoke passes into the stem of the pipe.
In operation the smoke percolates through the medicated cotton wool or other pad
and is thoroughly filtered and purified from impurities leaving the smoke cool and
pure. The perforations in the bottom of the smoking part of the bowl ensure perfect
and steady combustion of the tobacco with a gentle volume of smoke.
And in order that my invention may be well understood and carried into practice,
I will now proceed to describe the same with reference to the accompanying drawings
in which similar letters indicate corresponding parts in all the figures:
Figure 1 is a sectional elevation of a pipe constructed according to this invention
Figure 2 is a section of the upper or smoking part A of the bowl; Figure 3 is a
section of the chamber or recess B, and Figure 4 an elevation of the pipe.

page_text: The upper or smoking part A of the bowl is provided with a perforated bottom C,
and with a male screw thread D on its lower edge. A corresponding female thread F
is formed on the inside of the chamber or recess B. The said chamber B is provided
with a flange G on which the medicated pad H is placed and when the upper part A
is screwed home, the said pad H is securely held between the bottom or underside
of the part A and the flange G somewhat after the manner of a washer. By this
arrangement, not only is the pad held securely in position, 'but a perfectly airtight
joint is made between the upper and lower parts A and B of the bowl.
The pad, I prefer to make of felt, of such a thickness as to be just sufficiently.
porous to allow the smoke to percolate through in a gentle volume, and its diameter
will be rather less than the diameter of the top part of the chamber B so that it will
rest upon the flange G. The felt may be medicated in its manufacture, or it may be
treated with some liquid or powderous antiseptic afterwards. The pad may of course
be made from other absorbent material such as medicated cotton wool, but I find the
ordinary white felt of commerce about a quarter of an inch thick to be well adapted
for the purpose, as, while offering a free passage for the smoke, it filters all the
oily and other impurities therefrom. The advantages of placing the purifying pad
in this position i.e. immediately under the smoking part A of the bowl, is that it
prevents the stem of the pipe from becoming clogged or choked up all the nicotino
and other impurities being retained by the pad. When the pad becomes saturated,
a new one can easily be substituted by simply unscrewing the parts A and B, shaking
out the old pad and inserting a new one in its place.
The chamber B may be made of metal and the bottom lined with asbestos or
similar substance if desired to prevent the bottom becoming too hot for the touch.
The screw D on the part A may also be made of metal if desired, as metal is less
likely to swell and crack or otherwise become misshapen from the heat, but I do not
confine myself to metal or to any other material or composition.
By referring to the drawings, it will be seen that this pipe is provided with rather
a large bore, but this is counteracted by the perforations in the bottom C and by the
pad H.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The construction of a pipe with a bowl made in two parts A and B screwing
together with a medicated pad H between them so that the smoke must filter through
the pad before passing into the stem, the upper, or smoking part A being provided
with a perforated bottom C, substantially as and for the purpose herein before set
forth and illustrated in the accompanying drawings.
Dated thi
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office, 54, Fleet Street, London, E.C., Agent for the Applicant.