BAC
Year: 1887

page_text: Date of Application, 27th May, 1887
Complete Left, 27th Feb., 1888
Complete Accepted, 11th May, 1888
I, DAVID HARRY SHUTTLEWORTH-BROWN, of Belle vue Villa, South Wimbledon,
in the County of Surrey, England, Engineer, do hereby declare the nature of my
Invention for A TOBACCO PIPE to be as follows :-
The Pipe is so made that a part of its stem consists of a tube or chamber,
designed to radiate heat rapidly from its outer surface, to cool the smoke, and to
condense and hold back noxious vapours, contained in the smoke, which would
otherwise injure the Smoker.
These purposes are effected by making the tube or chamber of a metal that is a
good conductor, has a good radiating surface, and is of far larger diameter than is
necessary for the passage of the smoke, and also, by throwing the current of smoke,
as a comparatively thin film, into contact with the inner or condensing surface of the
tube or chamber, by means of a cylinder or block, preferably light and absorbent,
within it.
To increase the radiating and condensing surfaces, the tube or chamber is screwed
(the deeper the better) with a one, two or three strand thread from end to end,-into
this there is put a plain cylinder (that exactly fits it) of Meerchaum, or such a porous
absorbent as plaister of Paris, honey-combed, if the former, by drilling or boring,―
if the latter, by inserting into the cylinder an instrument with one or several prongs,
and withdrawing it before the plaister sets hard, (the holes thus artificially made in
these plain cylinders, to lighten them, and to quicken their power of absorbing, will
of course only be open at one end, preferably towards the bowl of the Pipe, when the
cylinder is in position), the outside of the absorbent cylinder, although plain, is in
contact with the inner ridge of the thread or threads, screwed in the surface of the
tube, it thus converts the thread or threads into draw-tubes of considerable heat
radiating power, but if the tube or chamber be not screwed, or if it be corrugated
with pyramids or pits, to increase its radiating and condensing surfaces (there will be
a socket at each end, for the bowl stem and for the mouth piece) the cylinder, in order
that the smoke may pass it, will naturally have to be ratlier less in diameter than the
tube, or it can have a star-section.

page_text: The ends of the plain cylinder can be corrugated radially, or otherwise hollowed or
jagged, so as to form adits to and from the thread or threads that, when it is in position,
lead the smoke from the bowl-stem to the mouth-piece, otherwise, should the ends
of the bowl-stem or of the mouth-piece butt or abut against either of the ends of the
cylinder, the passage for the smoke is entirely blocked, (should they not be similarly
jagged), the absorbent may also be granulated and contained in a metallic gauze
cylinder.
The cleaner will have the section of the screwed tube,-the other forms can be
cleaned by steam or water.

page_text: 1, DAVID HARRY SHUTTLEWORTH-BROWN, of Belle vue Villa, South Wimbledon,
in the County of Surrey, England, Engineer, 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 Pipe is so made that a part of its stem consists of a tube or chamber, designed
to radiate heat rapidly from its outer surface, to cool the smoke, and to condense and
hold back noxious vapours, contained in the smoke, which would otherwise injure the
Smoker.
These purposes are effected by making the tube or chamber of a metal that is a
good conductor, has a good radiating surface, and is of far larger diameter than is
necessary for the passage of the smoke, and also by throwing the current of smoke, as
a comparatively thin film, into contact with the inner or condensing surface of the
tube or chamber, by means of a cylinder or block, preferably light and absorbent,
within it.
To increase the radiating and condensing surfaces, the tube or chamber is screwed
(the deeper the better) with a one, two or three strand thread from end to end,-
into this there is put a plain cylinder (that exactly fits it) of Meerchaum, or such a
porous absorbent as plaister of Paris, honeycombed, if the former, by drilling or
boring, if the latter, by inserting, into the cylinder, an instrument with one or several
prongs, and withdrawing it before the plaister sets hard (the holes thus artificially
made in these plain cylinders, to lighten them, and to quicken their power of absorbing,
will of course only be open at one end, preferably towards the bowl of the Pipe,
when the cylinder is in position), the outside of the absorbent. cylinder, although
plain, is in contact with the inner ridge of the thread or threads, screwed in the
surface of the tube, it thus converts the thread or threads into draw-tubes of con-
siderable heat radiating power, but if the tube or chamber be not screwed, or if it
be corrugated with pyramids or pits, to increase its radiating and condensing surfaces
(there will be a socket at each end, for the bowl-stem and for the mouth-piece) the
cylinder, in order that the smoke may pass it, will naturally have to be rather less
in diameter than the tube, or it can have a star-section.
The ends of the plain cylinder can be corrugated radially, or otherwise hollowed
or jagged, so as to form adits to and from the thread or threads that, when it is in
position, lead the smoke from the bowl stem to the mouth-piece, otherwise, should
the ends of the bowl-stem or of the mouth-piece butt or abut against either of the
ends of the cylinder, the passage for the smoke is entirely blocked (should they not
be similarly jagged).
If the Cylinder, being made of plastic material, be forced through a plate or die,
it can be cut off, honeycombed in lengths, but the passages within it will then be
open at both ends, they can all easily be blocked, however, at one end or the other,
by the abutting ends of the bowl-stem and the mouth-piece, and so as to cause the

page_text: is scraped or pared away, at one end of them (the mouth end) so that they will
communicate, then the bowl stem can abut against the Cylinder, round the core only,
and the mouth-piece, having of course a passage from the thread or smoke duct, can
abut against the outside edge of the Cylinder.
It is now obvious that the smoke, when drawn, will enter the core of the Cylinder,
return by the other passages, and then pass over the surface of the Cylinder (through
the thread) to the mouth-piece.
The absorbent may also be granulatod, and contained in a metallic gauze
Cylinder.
The cleaner will have the section of the screwed tube,-(the other forms can be
cleaned by steam or water).
DESCRIPTION OF DRAWINGS.
A Section of Screwed Tube,-B-Section of Cylinder with bowl-stem,-b=Cross-
section of Cylinder, C-Section of the Tube with pits or pyramids,-D=Section of
open Cylinder with abutting mouth-piece.
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 —
A Tobacco Pipe having:
1. A Tube, Chamber or Smoke-duct, the material of which is screwed into a
thread, or threads, of spiral inclined surfaces, or so as to afford, externally, a large
heat-radiating surface, and internally, a large vapour-condensing surface.
2. An Absorbent Cylinder, cored and honeycombed, so that its length may be
traversed several times by the smoke, which, when drawn, first penetrates the core,
to the end of the Cylinder, then dividing, returns, to pass over its surface, or vice
versa.
3. The Combination, with a Screwed Tube, of an Absorbent Cylinder, enclosed
within it, so fitted as to convert the thread into a spiral duct, and at the same time to
throw the Smoke, as a thin film, into contact with the condensing-surfaces of the
thread, substantially as described."
4. A Tube, Chamber or Smoke-duct, corrugated, with pyramids or pits, to afford
large heat-radiating and vapour-condensing surfaces.
5.-The Combination, with a Tube, corrugated with pyramids or pits, of an
Absorbent Cylinder, substantially as described.
Dated this 25th day of February A.D. 1888.