or Improved Means and Apparatus for Jointing Stove Pipes to Chimneys.
Year: 1899

page_text: Date of Application, 21st Jan., 1899-Accepted, 11th Mar., 1899
COMPLETE SPECIFICATION.
New or Improved Means and Apparatus for Jointing Stove Pipes to
Chimneys.
I, WILHELM FISCHER, 117, Ardeystrasse, Dortmund, Germany, 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:-
This invention consists of means and apparatus for jointing stove pipes to
chimneys, and has for its object the securing of a firm hold on fixing of the.
pipe in the chimney and forming a tight or close joint round the pipe towards
the interior of the room so as to absolutely prevent the escape of soot.
The invention is essentially characterised by a ring placed on the stove pipe,
and serving to close the opening to the chimney, which ring is provided with
suitable means for enabling the pipe to be firmly held or fixed. This ring is
preferably made in several parts with its outer surface conical and its inner
surface fitted with packing material. The ring is firmly pressed on to the pipe
and a close joint made by means of a conical closing ring which is pressed up
and firmly fixed by the aid of a stopping or locking arrangement. The pipe
may be firmly held or fixed in various ways, for instance several bent hooks
may be fixed on the ring to be compressed so that they can be turned and when
the ring is pressed up, hook themselves into the brick-work of the chimney and
thus firmly fix the ring and the parts connected with it to the same.
In place of these hooks the joint-forming ring can be provided with spring
hold-fasts, the ends of which are alternately bent over inwards and outwards.
When the ring is put on, these hold-fasts are pushed through the hole in the
chimney, which causes those which have their ends bent outwards to fix the ring
firmly to the brickwork of the chimney, whilst those hold-fasts which have their
ends bent inwards prevent the pipe from entering too far into the chimney.
Or in place of the hooks or hold-fasts a conical pipe may be advantageously
employed, the same being cut open and having its edges turned over inwards
and outwards, the outwardly turned edges securing the pipe to the closing ring,
and the inwardly turned edges preventing the pipe from entering too far as in
the case of the hold-fasts. The conical pipe is provided on its outer edge with
spring barbed hooks, which are so formed, that they hook themselves into the
brickwork and make it practically impossible for them to be withdrawn.
Instead of these spring barbed hooks the pipe in question can be provided with
hold-fasts bent over outwards, with the same object as the beforementioned
spring holdfasts.
The invention is illustrated in the accompanying drawing in which Figure 1
is a section, and Figure 2 an elevation, in which the fastening of the ring is
effected by means of hooks which are bent over; Figures 3 and 4 shown also in
section and elevation, an arrangement in which spring hold-fasts are used for
fastening the ring; Figure 5 shows in section the arrangement in which a conical
pipe is used for fastening the ring; and Figure 6 shows a modification of the
arrangement shown in Figure 5.

page_text: '
In the arrangement illustrated in Figures 1 and 2 the ring a is preferably
made in two pieces and has on its hinder side indentations a¹, in which are placed
the hooks h turning on rods and tapering in a curved form towards the end as
shown in Figure 1. In the mode of applicatioir shown in the drawing, the ring a
is connected with a ring shaped disc g, on which it lies, and which is also made
in two pieces. It also has a conical outer surface a² and on its inner surface it
may be provided with a groove in which a rope is laid, consisting of asbestos
or other fire-proof packing material. By means of a conical closing ring b, (the
shape of which can be seen from its section in Figure 1) the halves of the ring a
are pressed together when the former is pushed on. As in the act of fixing,
the bent hooks h lie on the outer wall of the stove pipe, when the ring a is
pressed together they will move, outwards and their joints, like claws, will be
pressed into the brickwork. By this means the ring a, or its separate parts, will
not only be fixed to the brickwork but also. pressed on to the stove pipe, and: tlie
joint between the two be thereby made tight. The disc g is furnished with hooks
or projections with which engage the slots in the closing ring b, after the
manner of a bayonet joint. The ring is shewn in two parts and each part
provided with a hook i, but it is obvious that the ring may be made, in several
parts and each part will be provided with a similar hook.
Instead of the hooks which serve to fasten the ring to the brickwork another
arrangement can be used as already mentioned in the introduction.
In Figures 3 and 4, instead of the hooks has in Figures 1 and 2, spring hold-
fasts mm² are provided, the ends of which are bent over as shown. The hold-
fasts mare bent inwards and serve to adjust the position of the pipe in the
chimney, whilst the hold-fasts m² are bent outwards and when the whole is in
the fixed position as in Figure 3, lie behind the brickwork of the chimney and
the fastening of the ring, or the separate parts of the same, is effected. The
pressing together of the ring takes place exactly as in the arrangement before
described by the pressing on of the closing ring b.
In the arrangement shown in Figure 5 a conical pipe r is attached to the
ring a. At its inner end its edges r are bent over inwards, whilst its edges
are bent over outwards and attached thereby to the ring a. By means of this
pipe a tight joint is formed, preventing any escape of soot. On its outer surface
this pipe carries spring barbed hooks s, the barbs being bent outwards so that
the pipe can be pushed in, but preventing the same from going back as the barbs
hook themselves into the brickwork.
Instead of these barbed hooks s, hold-fasts t, bent over outwards at the hinder.
end of the pipe, can also be employed as shown in Figure 6, and having the same
effect as the hold-fasts m2 previously described.
Having now particularly described and ascertained the nature of the said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is;
-
First. The means and apparatus for jointing stove pipes to chimneys which
consist of a ring placed on the pipe and closing the pipe opening, and of suitable
appliances connected therewith for effecting the secure fastening of the pipe,
substantially as described with reference to the drawings.
Second. The means and apparatus for jointing stove pipes to chimneys which
consist of the ring a cut open or in several parts, and having conical outer sur-
faces and inner ring surfaces provided with packing material, which ring is
pressed upon the pipe and makes a close joint by means of a conical shaped
closing ring b having a sloping or locking arrangement by which the ring is
fastened to the brickwork of the chimney, substantially as described with refer-
ence to the drawings.
Third. In the means and apparatus for jointing stove pipes to chimneys
referred to in the two first claiming clauses hereof, the employment of bent
hooks h capable of being pressed into the brickwork of the chimney for the pur-

page_text: pose of fastening the ring a and the parts connected therewith to the brickwork,
substantially as described with reference to the drawings.
Fourth. In the means and apparatus for jointing stove pipes to chimneys
referred to in the two first claiming clauses hereof, the employment of spring
hold-fasts m¹ m² which with thus bent over ends, fasten the ring a to the brick-
work, and also prevent the pipe from being pushed too far into the chimney,
substantially as described with reference to the drawings.
Fifth. In the means and apparatus for jointing stove pipes to chimneys referred
to in the two first claiming clauses hereof the employment of a conical pipe the
hinder bent over edge of which serves to adjust the position of the stove pipe,
whilst the barbed hooks s arranged on the outer wall of the pipe fasten the same
in the brickwork, substantially as described with reference to the drawings.
Sixth. In the means and apparatus for jointing stove pipes to chimneys
referred to in the two first and fifth claiming clauses hereof the employment of
spring hold-fasts t bent over outwards in substitution for the barbed hooks s, sub-
stantially as described with reference to the drawings.
Dated this 21st day
VL
1000
VILLE 10
n
UL
200T
W. FISCHER
Per W. H. Beck,
Agent, 115, Cannon Street, London, E.C.