Improvements in Tobacco Pipes.
Year: 1891

page_text: Date of Application, 19th Oct., 1891
Complete Specification Left, 30th Apr., 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Tobacco Pipes.
I, WILLIAM WILSHAW HOWLETT of No. 14 Cauldon Road, Hanley, in the
County of Stafford, Writing Clerk, do hereby declare the nature of this invention
to be as follows :-
:―
A tobacco pipe, the bowl of which, consists of two sections, to be referred to
hereafter, as an
66 upper," & a "lower," respectively. The "upper," which, con-
tains the tobacco, having an oval bottom, inside & out, & pierced with one or more
holes, around the outer part of the oval, for the purpose of allowing a good draft,
& also for the escape of nicotine. The "lower," having a cone-like, or other
suitable centre piece, so as to leave a cavity around it, into which, the nicotine may
settle; & the cone-like or other suitable centre-piece being pierced so as to be in
direct communication with the stem of the pipe, through which, the smoke may
pass. The height of the cone cr other suitable centre-piece, is sufficient to allow a
space between it & the oval of the "upper," the bottom of which, being pierced
around the oval, nicotine is prevented from entering the stem. The "lower" & the
upper" sections are fastened together, by means of screwing or other suitable
method.
Dated this 10th day of October 1801
WILLIAM WILSHAW HOWLETT.
COMPLETE SPECIFICATION.
Improvements in Tobacco Pipes.
1, WILLIAM WILSHAW HOWLETT, of No. 14 Cauldon Road, Hanley, in the
County of Stafford, Writing Clerk, 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 :-
This invention relates to improvements in tobacco-pipes and consists firstly in
arranging the smoke passages in the form of a "trap or syphon whereby the
nicotine is arrested before entering the stem of the pipe. In order to effect this
object and also to provide for the discharge or removal of the nicotine when a
sufficient quantity has accumulated, the bowl is formed in two parts the upper of
which is closed at the bottom by a dome-shaped partition, the convex surface being
presented to the interior of the upper part of the bowl. This partition is perforated
around its outer edge for the passage of smoke. In the lower part of the bowl is
formed an annular groove or cavity in the centre of which is a perforated nipple
for the passage of the smoke to the stem.
This nipple projects upward until nearly in contact with the concave or lower
side of the dome which forms the bottom of the upper part of the bowl, and the
orifice being well above the level of any nicotine or condensed vapour that may
have accumulated in the annular groove or cavity, the said nicotine or condensed
vapour cannot pass into the bore of the stem at whatever angle the pipe may be.
held.
In the accompanying drawings
Figs. 1 and 2 and 3, represent sections or partial sections of pipes constructed in
accordance with my invention and Fig. 4 represents a modified form thereof.
Referring to the sheet of drawings, it will be seen that in each figure the bowl or
head of the pipe is formed in two parts a and b.

page_text: These parts may be either screwed together as shown at a Figs. 1 and 2, or they
may be turned to fit accurately together without screwing, as shown at a' in Figs. 3
and 4.
In Figs. 1 2 and 3, the part a of the bowl is shown with a dome-shaped bottom c
having perforations e' at its outer edge through which the smoke may pass to the
lower part b in which is formed the 'ahnilar groove or cavity for the collection of
nicotine, condensed vapour; and occasional tobacco-dust, whilst in the centre of this
annular groove or cavity is a nipple extending upwards to within a short distance
of the middle of the dome c the perforation or bore of the nipple forming a continua-
tion of that of the stem of the pipe. As it is almost a necessary feature in the
construction of the pipe that the orifice of the nipple should be situated in the
centre of the bowl, it is possible that some trouble may be experienced in boring a
pipe after the pattern of Fig. 1. For this reason it may be convenient to adopt-
construction similar to either Fig. 2 or 3 in which the lower part of the bowl is
shown screwed on to an elbow d which serves to connect the bowl with the 'stem e.
By this means the difficulty of construction, should any exist, will be removed and
the cleaning of the smoke passages, as occasion requires will be rendered a very
simple and easy operation, or a straight stem may be employed instead of the curved
one shown.
In order to guard against the possibility of the nicotine forcing its way by
capillary attraction through the joint connecting the parts a and b of the bowl I
leave a space between the perforations c¹ and the sides of the part of the bowl, and
further to ensure the nicotine dropping direct into 'the cavity I either form a sort
of trough around the edge of the partition as shown at ein Fig. 1 so that 'the
nicotine escapes at a lower level than the bottom of the joint or accomplish the same:
object by bevelling the outer and bottom edge of the part a as shown at a' in Fig. 2
so that the nicotine cannot reach the joint without taking an upward course.
In Fig. 4 I dispense with the dome-shaped partition c and form a nipple ƒ in the
centre of the part a of the bowl, which nipple descends into a shallow cup or
receptacle g formed in the lower part 6 in which the nicotine and condensed vapour
drops whilst the smoke is free to travel through the passages h. The accumulation
of nicotine is represented in each of the figures by dot and dash lines.
It will be readily seen that whilst the liability of the pipe to become choked is
greatly diminished, the facilities for cleaning the same are greatly increased by my
mode of construction and there is also the important advantage of being able to burn
all the tobacco with which the bowl may be charged as the freedom with which the
nicotine escapes into the lower part 6 of the bowl, prevents the 'tobacco in the
bottom of the upper part a of the bowl from getting too damp for burning. The
resulting improved flavour of the tobacco and the perfect freedom of draught are
advantages which cannot fail to commend themselves to smokers.
Although the figures above described relate only to wooden pipes, my invention
is equally applicable to clay or composite pipes which it would probably be found
convenient to mould in halves, each half corresponding to one of the sections shown
in Figs. 1, 2, 3 or 4, and may be made to screw together or after being thus
separately moulded the halves may be pressed together and baked in the usual
manner.
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-l
claim is :-
1. The combination of parts a, b, b', and c constituting the improved tobacco-
pipe herein described and illustrated in Fig. 1, of the accompanying drawings.
2. The combination of parts a, b, b, c, d, and e constituting the improved tobacco-
pipe herein described and illustrated in Figs. 2 and 3, of the accompanying
drawings.
2

page_text: nicotine from forcing itself through the joint connecting the parts a and b substan-
tially as described and illustrated in Figs. 1, 2 and 3, of the accompanying
drawings.
5
nicotine from forcing itself through the joint connecting the parts a and b substan-
tially as described and illustrated in Figs. 1, 2 and 3, of the accompanying
drawings.
4. The modified construction of tobacco pipe illustrated in Fig. 4, substantially
as herein described.
'
5 A nine formed of clay or plastic material constructed in halves which Are
nicotine from forcing itself through the joint connecting the parts a and b substan-
tially as described and illustrated in Figs. 1, 2 and 3, of the accompanying
drawings.
4. The modified construction of tobacco pipe illustrated in Fig. 4, substantially
as herein described.
5 A pipe formed of clay or plastic material constructed in halves which are
fitted together before baking, substantially as herein described.
Dated this 30th day of April 1892.
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C., Agents for the Applicant.