Improvements in Tobacco-pipes.
Year: 1891

page_text: Date of Application, 31st July, 1891-Accepted, 5th Sept., 1891
COMPLETE SPECIFICATION.
Improvements in Tobacco-pipes.
I, FRANZ GUSTAV KLEINSTEUBER, of Farnroda, near Ruhla, Thuringia, in the
German Empire, 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 :-
My invention relates to tobacco-pipes in which the nicotine is prevented from
entering the month of the smoker, and the objects of my improvements are, first, to
prevent the nicotine from entering the tube of the tobacco-pipe, second, to cause
evaporation of the nicotine by the heat of the burning tobacco and third, to blow
off that evaporated nicotine together with the smoke escaping from the upper
opening of the bowl, so as to protect the smoker against the injurious effects arising
from nicotine, and render the tobacco-pipe continually free of the latter, notwith-
standing what length of time the pipe be used.
I attain these objects by the arrangement illustrated in the accompanying
drawing, in which similar letters denote similar parts throughout the several views,
and in which :-
Fig. 1 is a vertical longitudinal section through a tobacco-pipe provided with a
separate bottom or inlet consisting of an asbestos-composition.
Fig. 2 shows the bottom or inlet alone.
Fig. 3 is a modification, the bottom being provided with upwardly extending
sides so as to represent a cup or box, the outer surface of the box having
projections.
Fig. 4 is another modification, the projections being replaced by vertical tongues
and grooves.
Fig. 5 is a third modification, the tongues and grooves being of spiral-like
arrangement.
The method used hitherto for rendering nicotine innocuous to the smoker
consisted chiefly in the employment of sucking-up devices within the tube of the
tobacco-pipe, especially in the shape of cartridge-like shells filled with wad and the
like, which had to be emptied or renewed from time to time. Said devices, how-
ever, as known to every smoker, did not answer their purposes in consequence of
the vapours finding their way into the whole length of the tube by the side of the
shell, the vapours thus by and by impregnating the tube with nicotine yet.
In order to overcome that draw-back, and to avoid the inconveniences resulting
therefrom, the bowl of the tobacco-pipe has been provided with an inlet made of a
porous asbestos-composition, said inlet being either of plano-concave, plano-convex,
meniscus, or concave-convex shape, (Fig. 1 and 2), and covering only the bottom of
the bowl; or of cup-like shape (Fig. 3, 4 and 5) and covering the inner surface of
the bowl altogether.
The asbestos-composition being firmly secured to the bowl of the pipe, sucks the
nicotine up; and the smoke in passing through the inlet, gives the greatest part of
its heat up to the latter, causing thereby evaporation of the nicotine, which then
is blown off together with the smoke escaping from the main-opening of the bowl.
This is the effect of the arrangement illustrated in Fig. 1 and 2, in which is the
bowl of a tobacco-pipe, c the tube and a the inlet.
When employing cup-like inlets, as shown in Fig. 3, 4 and 5, the porous surface
is considerably increased, and the effect of the arrangement is still more increased
by providing the outer surface of the inlet with projections a¹, tongues or the like
of any shape, so as to establish a space between bowl and inlet, said space being in
communication with the open air. The walls or sides of the inlet are but thin, so
as to become penetrated by the nicotine without difficulty; the nicotine evaporated

page_text: by the heat of the glowing tobacco enters the space mentioned above, and
escapes into the air, said space at the same time preventing the bowl from
becoming too hot.
By the arrangements above described the whole of the pipe is kept perfectly
clear, irrespective of even constant use, and the smoke is freed from the greatest
part of its heat, as well as of all impure admixtures, so as to render smoking
perfectly innocuous and highly agreeable during any period of time.
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 :
In tobacco-pipes: The combination of the bowl with a porous asbestos-inlet a,
said inlet being fixed to the bottom of the bowl, for the purpose as described.
Dated this
day of
1891
FRANZ GUSTAV
KLEINSTEUBER.
Per Robert Deissler,
Agent for the Applicant.
FRANZ GUSTAV KLEINSTEUBER.
Per Robert Deissler,
Agent for the Applicant.