Improvements in Apparatus for Dealing with the Refuse of Towns.
Year: 1891

page_text: Date of Application, 5th Nov., 1891
Complete Specification Left, 4th Aug.. 1892-Accepted, 10th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Dealing with the Refuse of Towns.
1, JAMES BINGHAM ALLIOTT of Bloomsgrove Iron Works, Nottingham,
Engineer, do hereby declare the nature of this invention to be as follows:-
In what are generally known as "Destructor" furnaces, used for the destruction
of refuse material there are often treated materials such as waste paper and other
matters that are so small or light as to be readily carried away by the draught, in
which case unless arrested they pass up the chimney and fall outside it.
To prevent this, screens of metal work fixed in flues leading from the furnace or
furnaces to the chimney have been used, but with some materials these screens are
liable to become rapidly clogged up,-the heat of the flues renders it difficult and
burdensome to clean them, besides which the cleaning process interferes with the
working of the furnaces.
In one
Now in order to obviate this according to my invention the screens are so con-
structed and arranged that one screen or part of a screen can be withdrawn from a
flue to be cleaned whilst another screen or part of a screen is in use.
arrangement for this purpose the screens are made to pass through one or both
sides or through the tops of the flues leading to the chimneys and are made movable
so that they may be drawn outside the flues to be cleaned, and then replaced in
position. In some cases, especially where the screens are adapted to be withdrawn
through the top of a flue, I prefer to use two or more screens, one behind the other,
and to so arrange that the one may be in the flue when the other is withdrawn to
be cleaned.
In other cases, and especially where the screen or screens passes or pass through
the sides of a flue, I make the screen or each screen of such a length and arrange
it upon rollers or otherwise in such a way as to be capable of moving outward
beyond each side of the flue so that it can be drawn through one side of the flue as
far as necessary to enable say one half or thereabout of the screen to be cleaned
without leaving any part of the flue open, and that it can be drawn in like manner
through the other side of the flue to enable the remainder of the screen to be
cleaned without leaving any part of the flue open.
Dated this 4th day of November 1891.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.Č., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Dealing with the Refuse of Towns.
I, JAMES BINGHAM ALLIOTT, of Bloomsgrove Iron Works, Nottingham,
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 :—
In what are generally known as "Destructor" furnaces, used for the destruction
of refuse material, there are often treated materials such as waste paper and other
matters that are so small or light as to be readily carried away by the draught, in
which case unless arrested they pass up the chimney and fall outside it,
To prevent this, screens of metal work fixed in flues leading from the furnace or
furnaces to the chimney have been used, but with some materials these screens are

page_text: liable to become rapidly clogged up,-the heat of the flues renders it difficult and
burdensome to clean them, besides which the cleaning process interferes with the
working of the furnaces.
In one
Now in order to obviate this according to my invention the screens are so con-
structed and arranged that one screen or part of a screen can be withdrawn from a
flue to be cleaned whilst another screen or part of a screen is in use.
arrangement for this purpose the screens are made to pass through one or both sides
or through the tops of the flues leading to the chimneys and are made movable so
that they may be drawn outside the flues to be cleaned, and then replaced in
position. In some cases, especially where the screens are adapted to be withdrawn
through the top of a flue, I prefer to use two or more screens, one behind the
other, and to so arrange that the one may be in the flue when the other is withdrawn
to be cleaned.
In other cases, and especially where the screen or screens passes or pass through
the sides of a flue, I make the screen or each screen of such a length and arrange it
upon rollers or otherwise in such a way as to be capable of moving outward beyond
each side of the flue so that it can be drawn through one side of the flue as far as
necessary to enable say one half or thereabout of the screen to be cleaned without
leaving any part of the flue open, and that it can be drawn in like manner through
the other side of the flue to enable the remainder of the screen to be cleaned
without leaving any part of the flue open.
In the accompanying illustrative drawings,
Figs. 1 and 2 are sectional views at right angles to each other, of part of a
destructor flue provided with an arrangement of screens according to this invention.
1, 1 are the screens arranged one behind the other and adapted to be withdrawn
through slots or openings 2, 2ª formed in the top of the flue 3. The screens are
respectively attached to chains 4, 4 that pass over pulleys 5, 5ª mounted on
standards 5* and which are provided at their other or free ends with counterbalance
weights 6, 6. The pulleys are provided with notched wheels 7, 7* respectively
with which engage teeth or projections 8, 8 formed on the ends of weighted
levers 9,.9 pivotted at 9* to the standards 5*. The arrangement is such that when
the screen 1 is moved into its lowest position in the flue as shown, a projection 6*
on the counterbalance weight 6 will act against the weighted end of the pivotted
lever 9 and disengage the other end thereof from the notched wheel 7ª thereby
releasing the pulley 5 and allowing the other screen 1 to be withdrawn for cleaning
as shown. When the screen 1" is lowered a similar projection 6* on the weight 6"
will come in contact with the weighted end of the pivotted lever 9 and. release tho
pulley 5 whereupon the screen 1 can be withdrawn when desired. It will readily
be seen that with the above described arrangement both screens cannot be with-
drawn at the same time unless the pivotted levers 9, 9ª are improperly manipulated.
Figs. 3 and 4 are corresponding views to Figs. 1 and 2 of a modified arrangement
in which there is only one screen 1 which is arranged to pass laterally through slots
in the sides of the flue 3 and is of such a length that it can be withdrawn through
either side of the flue as far as necessary to clean about one half of it without
leaving any part of the flue open. The screen, which is provided with handles 10,
is mounted to run on suitably arranged rollers 11 and is guided at the top by flanged
rollers 12 as shown.
Figs. 5, 6 and 7 are respectively a plan, side elevation and cross sectional view
of part of a flue provided with two laterally movable screens 1 and 1° arranged one
behind the other. Each screen, which is arranged to pass through a slot in one
side of the flue 3, is mounted to run upon rollers 11 and is guided by Hanged
rollers 12 in the same manner as the single screen described with reference to
Figs. 3 and 4. Between the two screens there is pivotted to the side of the flue a
bar or plate 13 that is bent to the form shown in Fig. 6, so that when both screens
are within the flue, it can be turned either to the right or to the left about its pivot
so as to allow either of the screens to be withdrawn, but in order to allow one.
screen, say 1, to be withdrawn it must be turned into such a'position, as shown; as

page_text: will prevent the other screen 1ª being withdrawn until the screen is returned
within the flue, when it can then be turned into the position indicated in dotted
lines in Fig. 6 in which it will release the screen 1 and lock the screen 1.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
A destructor furnace or apparatus for dealing with the refuse of towns con-
structed with screens or a screen arranged substantially as hereinabove described
with reference to the examples illustrated in the accompanying drawings so that
one screen or part of a screen can be withdrawn from a flue to be cleaned whilst
another screen or part of a screen is in use as set forth.
JAMES B. ALLIOTT.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.