Year: 1886

page_text: Date of Application, 10th Aug., 1886.
Complete Left, 3rd May, 1887.
Complete Accepted, 3rd June, 1887.
I CHARLES KNOTT of 8 Priory Place, Lower Broughton Manchester in the County
of Lancaster Accountant do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to construct a self-cleansing tobacco pipe, the tube
of which will be cleaned out by the mere act of unscrewing it from the bowl.
I make the bowl of the pipe of any convenient form and of wood or any other
suitable material with a short pap or projection on one side onto the exterior of which
the stem or tube is screwed. The stem or tube is bored out much larger than usual,
and inside this bore fits a half tube or gutter, which is screwed or otherwise fixed
tight into the interior of the pap or projection on the bowl, so that when the stem or
tube is turned round in the act of unscrewing the stem from the bowl the edge of the
fixed half tube or gutter acts as a scraper and thoroughly cleanses the interior of
the bore.
When the stem has been entirely unscrewed, the half tube or gutter can be readily
cleaned out without the necessity for removing it from the bowl.
The extreme end of the half tube or gutter is made taper and fits into a
corresponding taper bore in the mouth piece so that it cleans out the latter as well as
the stem of the pipe in the act of unscrewing and removing the same.
The stem and the fixed half tube or gutter may be made of vulcanite, horn, bone or
other suitable material.
1000
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: I CHARLES KNOTT of 8 Priory Place Lower Broughton Manchester in the County
of Lancaster Accountant 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 construct a self cleansing tobacco pipe, the tube of
which will be cleaned out by the mere act of unscrewing it from the bowl.
The nature of my invention and the manner in which the same is to be carried into
practical effect will be readily understood on reference to the accompanying drawings
and the following explanation thereof.
Fig. 1 is a longitudinal section of a tobacco pipo made according to my invention.
Fig. 2 is a side elevation thereof with the stein and mouth piece removed, and
Figs. 3 and 4 are detached views hereinafter more particularly referred to.
I make the bowl a, a of the pipe of any convenient form, and of wood or any
other suitable material with a short pap or projection b, b on one side, onto the
exterior of which the stem or tube c, c is screwed or otherwise fixed.
The stem or tube c, c is bored out much larger than usual, and inside this bore fits
a half tube or gutter d, d (see detached views Figs. 3 and 4) which is fixed tight in
to the interior of the pap or projection b, b on the bowl by means of a left handed
screw e, e or otherwise so that when the stem or tube c, cis turned round in the act of
unscrewing or removing the same from the bowl a, a the edge of the fixed half tube
or gutter d, d acts as a scraper and thoroughly cleanses the interior of the bore.
When the stem has been entirely unscrewed as shown at Fig. 2. the half tube or
gutter d, d can be readily cleaned out without the necessity for removing it from the
bowl, or it may if preferred be removed by unscrewing or otherwise.
I prefer to make the outer end of the half tube or gutter solid as shown at Fig. 4,
and I make it taper so that it fits (or nearly so) into a corresponding taper bore in the
mouth piece f,f so that it cleans out the latter as well as the stem of the pipe in the
act of unscrewing or removing the same.
I prefer to make the inner end of the mouth piece f₁f long enough to pass beyond
the solid part of the half tube or gutter and to bore holes through the mouth piece at
that part as shown at *Fig. 1 so as to allow the nicotine to escape into the tubular
space between the mouth piece and the stem.

page_text: The stem c, c and the fixed half tube or gutter d, d may be made of vulcanite, horn,
bone, or other suitable material and the bowl and mouth piece may be made of any
of the usual materials.
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 :-
An improved tobacco pipe provided with a fixed half tube, gutter, or scraper inside
the stem substantially in the manner and for the purpose hereinbefore particularly
described and illustrated by the accompanying drawings.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.