AN IMPROVED COMBINED TOBACCO-STOPPER AND CAP FOR PIPE BOWLS
Year: 1884

page_text: I ALEXANDER MELVILLE CLARK of the firm of A. M. and W. Clark of 53
Chancery Lane in the County of Middlesex, Fellow of the Institute of Patent
Agents do hereby declare the nature of the said Invention for "AN IMPROVED
COMBINED TOBACCO-STOPPER AND CAP FOR PIPE BOWLS" to be as follows:
This Invention consists in a tobacco stopper for compressing the tobacco and the
ash resulting from its combustion in a pipe bowl, combined with a cap for the
bowl.
The stopper consists of a disc or plug affixed to a central stem fitted to slide in
the cap and retained in the raised position by a spiral spring which yields to allow
the disc to be pressed down in the bowl by pressure applied to the head of the
stem. The stem slides through a hole in a disc forming the base of the cap and is
confined between such base and a domed top or cylindrical sheath attached to or
placed beneath a button head on the top of the central stem, and which may-slide
within the circular part of the cap or may wholly enclose the central stem and
spring and he also attached to the plug disc the sheath in that case being slit and
sliding through corresponding holes in the base plate of the cap. This latter plate
may be a plain disc. soldered in the. rim of the cap or fixed thereto by having its
edges V notched and bent into the said rim or it may be cupped so as to partly
enter the mouth of the bowl when the cap is closed down. In either case the air is
admitted through holes in the rim or outer portion of the cap and through holes in
this base plate and holes corresponding thereto in the plug disc.
The parts may be so fitted together as to be readily detachable for renewal or
repair.

page_text: I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of 53,
Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for "AN IMPROVED
COMBINED TOBACCO-STOPPER AND CAP FOR PIPE BOWLS," and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
This Invention consists in a tobacco stopper for compressing the tobacco and the
ash resulting from its combustion in a pipe bowl, combined with a cap for the
bowl.
In the accompanying Drawings Figures 1 and 2 shew the bowl of a pipe fitted
with the combined tobacco-stopper and cap of this Invention, the latter being
represented in the closed and open positions respectively. Figures 3 to 8 show the
different portions of the device separately. The same letters of reference indicate
similar parts in these eight Figures.
Figure 9 is an elevation Figure 10 a section and underside view of a modified
construction of the device and Figure 11 is an elevation and cross section of the
sheath enclosing the spring. The same letters of reference indicate the same parts
in these three Figures.
Referring to Figures 1 to 8. The stopper consists of a disc or plug D affixed by
a screw a to a central stem T fitted to slide in the cap a and retained in the raised
position by a spiral spring R which yields to allow the disc to be pressed down in
the bowl by pressure applied to the head of the stem. The stem T slides through
a hole O in a disc P forming the base of the cap a and is confined between such
base and a domed top N placed beneath a button head on the top of the central
stem T, and which may slide within the circular part of the cap a. The base
plate P may be a plain disc (Figure 6) soldered in the rim of the cap a or fixed
thereto by having its edges V notched as shown in Figure 6b, and bent into the
said rim. The air is admitted through holes in the rim or outer portion of the
cap a and the base plate P and plug-disc D may also have holes in them for the
same purpose.
In Figures 9 to 11 the domed top before mentioned is replaced by a cylindrical
sheath b which wholly encloses the central stem and spring, and to the lower end
of which the stopper a is attached as well as to the central stem.
This sheath slides through and is guided by the top e of the cap and it has
longitudinal slits fat the lower part, and the intervening solid portions to which
the disc a is attached, slide through corresponding apertures in the base of the cap;
which in this case is double and consists of an upper disc e¹ and a lower cupped
disc e soldered thereto, which either fits in the mouth of the pipe bowl as shown,
or is otherwise adapted to suit the pipe to which it is applied. The spring is
confined between the upper plate e and the top of the sheath b.
Air is admitted to the bowl through orifices ġ in the cap and through corre-
sponding holes g¹ in the bottom e² and disc a.
The parts may be so fitted together as to be readily detachable for renewal or
repair and the device may be applied to pipes of meerschaum, briar-root or other
material

page_text: Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed, I declare that what
I claim is :-
1 The combination with the cap or cover of a pipe bowl, of a disc or stopper D
attached to a stem T furnished with a spring R and top N and fitted to slide
through the cap, substantially as described and shown in Figures 1 to 8 of the
Drawings.
2nd In a combined cap and stopper for pipe bowls, the sheath b enclosing the
spring stem and forming a guide therefor, in combination with cap e¹ and stopper a
as described with reference to Figures 9, 10 and 11.