An Improved Plug for Tobacco Pipes.
Year: 1894

page_text: Date of Application, 13th Sept., 1894
Complete Specification Left, 28th Nov., 1894-Accepted, 29th Dec., 1894
I, EDWIN MILLER RICHFORD of 44 Snow Hill in the City of London, India
Rubber Stamp Manufacturer, do hereby declare the nature of this invention, to be
as follows:-
My invention relates to plugs for tobacco pipes, and it has for its object to
facilitate complete combustion of the pipeful of tobacco contained in the bowl, and
to ensure cool smoking by preventing the moisture formed or collected in the bowl
during smoking, from coming in contact with the tobacco.
The plug which forms the subject of my invention consists of a piece of wire
gauze of fine mesh, preferably square in shape, which is brought by stamping
between suitable dies to a figure approximating to that of a hollow cone, the centre
of the gauze forming the base of the cone, and the corners when turned up, the
sides and apex. The plug when used is folded over an internal spider or support,
and inserted, with the apex downwards, in the bowl of the pipe. The smoke from
the burning tobacco, which rests upon the gauze, has thus a free passage througi
the gauze to the hole in the stem of the pipe, whilst the tobacco itself is held clear
above any moisture which may collect in the bowl, and consequently burns freely
to the end.
D
100
$
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
COMI DID DI DUIFICATION.
An Improved Plug for Tobacco Pipes.
I, EDWIN MILLER RICHFORD, of 44, Snow Hill, in the City of London, India
Rubber Stamp 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 has for its object to provide a plug for tobacco pipes which will
prevent the super-saturation of the tobacco at the bottom of the bowl by the
accumulated moisture and by maintaining a free draught enable the whole of
the tobacco to be consumed, so that no wasted wet tobacco is left in the bottom
of the bowl. My improved plug is made of wire-gauze moulded to a hollow form to
fit the bowl and preferably maintained in shape by an internal skeleton frame, the
plug being completely permeable and yet of such fine mesh that no particle of
tobacco or ash can be drawn into the stem of the pipe. To avoid liability of the
plug being acted on by the juices of the tobacco and by heat, the gauze would
usually be made of iron or steel wire, although silver wire might be employed for
plugs of a more expensive character. When the plug becomes foul, it can be easily
cleaned by washing or by burning in a gas flame.
Reference is to be had to the accompanying drawings, forming part of this
Specification, wherein I have illustrated, on an enlarged scale, the construction of
my improved plug.

page_text: Figure 1 represents the complete plug.
Figure 2 shews the blank of wire-gauze from which it is made.
Figure 3 shews the form to which it is first brought.
Figure 4 shews the internal support, and Figure 5 shews the parts composing it.
Figure 6 illustrates the mode of finally closing in the sides of the plug.
a is a piece of wire-gauze, having a mesh of about 36 to the lineal.inch, cut on
the bias or with the wires running diagonally. This is first cupped by means of a
punch band die c which bring it to the form shewn in Figure 3. The frame shewn in
Figure 4 is then inserted and the whole placed beneath a punch d whose face is hollowed
to the intended form of the lower end of the plug by which the edges of the wire-
gauze are closed in around the frame and the plug brought to the final form shewn
in Figure 1. The frame consists of a loose ring of metal etwhich.distributes the
pressure of the closing in die and maintains the circular form of the upper face of
the plug, and of a spider or cross-frame formed of two plates of -metal shewn
separated in Figure 5, slitted as at 9 and halved together so as to cross each other.
at right angles: and stand edgewise to the upper face. of the plug. The. gauze
having been cupped, the ring is first dropped in and then the spider frame, whilst
the cupped gauze is in the inverted position, after which the gauze is closed in over
the rounded edges of the spider as above mentioned. The internal support is not
absolutely necessary, but its employment is preferable as it serves to maintain the
shape of the plug when being inserted in the bowl of the pipe.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I would observe that I do
not limit myself to the precise form of making the plug herein specified, but I
declare that what I claim is :-
1. A plug for a tobacco pipe, made of wire-gauze and with or without an internal
support, substantially as specified.
2. A plug for a tobacco pipe, made of wire-gauze moulded or struck up by
dies and closed around an internal frame formed of a metal ring and a spider
formed of crossed plates halved together, substantially as specified.
Dated this 28th day of November 1894.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.