An Improved Shoot or Apparatus for Removing Dust or other_ Refuse.
Year: 1894

page_text: Date of Application, 24th Jan., 1894
Complete Specification. Left; 24.h Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
An Improved Shoot or Apparatus for Removing Dust or other_
Refuse.
We, EDWIN COOPER PERRY, M.A. of Guy's Hospital, in the County of
London, and THOMAS KIRKLAND, of 17 Victoria Street, Westminster, in the same
county, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
Our invention relates to an improved apparatus, more particularly adapted for
removing dust, or refuse from the various floors of a building, such for example as
a building arranged in flats.
An arrangement heretofore employed for this purpose, consists of a vertical pipe,
or shoot, having branches, or openings communicating with each floor, but such
arrangement is defective in practice, as the said openings permit the escape of dust
and foul air into the apartment at the time of being used.
The main object of our invention is the construction of an apparatus, which will
overcome such defect, and we attain the said, object by providing a shoot having
openings communicating therewith, so arranged that each said opening is securely
sealed against the escape of dust, or foul air during the time refuse is being
discharged through it into the shoot, as well as at other times.
Our improved apparatus consists substantially of a pipe, or shoot running up the
side of a building. At each floor an opening is made in the wall and a specially
formed length of pipe is placed contiguous thereto and jointed to the wall, in such
manner as to prevent any direct connection between the building and the outside
air at these points.
These special lengths of pipe are provided with an opening, which is closed by
means of a door working on a central axis or trunnions. The said door is provided
on the lower part of its outer face with a plate, or platform to receive a bucket or
other receptacle, containing the refuse to be discharged.
The said bucket is kept in position on the plate by three guides provided with
stops, the said stops engaging the upper edges of the bucket.
Two of the said guides are attached to, or formed upon the door face, and the
remaining one to a rim, forming on its outer periphery part of a circle, and
connecting the upper and lower ends, or the two halves of the door, and the
aforesaid plate for receiving the bucket. After the bucket is placed in position on
the plate, the door can be turned over on its aforesaid trunnions, so that the said
While
bucket is reversed and discharges its contents into the middle of the shoot.
this is taking place the lower half of the door effectually closes the opening. After
the bucket is emptied, it can at once be returned to its original position and
removed.
In each of the aforesaid special lengths of pipe a flap valve is hinged, which is
opened by means of the circular rim before mentioned, and answers two purposes, it
prevents any material from above coming below it at the time of tipping, but allows
such material to fall after the bucket is again in its normal position, thus emptying
into the pipe any material which may have been deposited thereon, and it also acts
as a brake to prevent any undue jar to the working parts.
A suitable arrangement is also provided, so that the said flap valve can be
fastened up to close the pipe temporarily, whilst the door is taken out for cleaning,
or other purposes.
The bottom of the pipe or shoot, at the ground, preferably terminates with an
inverted funnel, of round, or other suitable shape, in order to admit of a receptacle

page_text: on wheels being placed underneath and then raised to make a more or less tight
joint therewith, and so prevent dust flying about and at the same time allow of the
receptacle being easily and quickly removed when full.
If necessary, perforations may be formed in the pipe, at or near the bottom end,
to permit the escape of air compressed by the materials falling down it.
Suitable elastic buffers, or stops, are provided to prevent any jar occurring when
the door is opened, or closed, at the moment when the action of the aforesaid brake
ceases.
In practice we prefer to make the pipe and the special lengths, of glazed
earthenware, but cast iron, or other suitable materials may be employed in place
thereof.
Dated this 24th day of January 1894.
AMBROSE MYALL,
2, Lancaster Place, London, W.C., Agent for the Applicants.
An Improved Shoot or Apparatus for Removing Dust or other
Refuse.
We, EDWIN COOPER PERRY, M.A. of Guy's Hospital, in the County of
London, and THOMAS KIRKLAND, of 17 Victoria Street, Westminster, in the
same county, Civil 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:-
Our invention relates to an improved apparatus, more particularly adapted for
removing dust or refuse from the various floors of a building, such for example as a
building arranged in flats.
An arrangement heretofore employed for this purpose consists of a vertical pipe
or shoot, having branches or openings communicating with each floor, but such
arrangement is defective in practice, as the said openings permit the escape of
dust and foul air into the apartment at the time of being used.
The main object of our invention is the construction of an apparatus, which will
overcome such defect, and we attain the said object by providing a shoot, having
openings communicating therewith, so arranged that each said opening is practically
sealed against the escape of dust or foul air during the time refuse is being
discharged through it into the shoot, as well as at other times, also the refuse is
discharged directly into the centre of the shoot, no hoppers or branch passages,
liable to become choked, being employed.
In the accompanying sheet of drawings, forming part of this Specification, and in
which similar letters of reference denote similar parts throughout;
Fig. 1 is a side sectional elevation of our improved apparatus through the centre
of a shoot opening.
Fig. 2 is a front elevation of the same, with the door removed.
Fig. 3 is a front elevation of the door detached.
Fig. 4 is a cross-section of the shoot through A, A, in Fig. 1, and
Fig. 5 is a front elevation of the flap valve detached.
Our improved apparatus consists substantially of a pipe, or shoot running up the
outside of a building. At each floor an opening B is made in the wall C, and a
specially formed length of pipe D, of enlarged cross-section, is placed contiguous
thereto and jointed to the wall as shewn, or in such other suitable manner as to
prevent any direct connection between the building and the outside air at these
points.
These special lengths of pipe are provided with an opening E, which is closed by
means of a door, working on a central axis or trunnions. The said door has an

page_text: upper part F and a lower part F', placed at an angle to each other, as shewn clearly
in Fig. 1, and the trunnions H, H, which rest in sockets J, J, on the pipe D, are at
the junction of the two said parts.
The upper part F of the door is of a similar shape, but slightly larger than the
opening E, and it is placed within the pipe D, so that in its normal position its
margin bears against the inner side of the said opening and closes it, as shewn by
the full lines in Fig. 1.
The lower part of the door, which is of the same shape and size as the upper
part, is provided on its upper face with a horizontal plate or platform K to receive
a bucket. L, or other receptacle containing the refuse to be discharged.
The said bucket is kept in position on the plate K by means of a
recess M
provided in the part F¹, and the rim N, which forms a portion of a circle having its
centre at the trunnions H, H, and connecting the upper and lower ends of the door
and the said plate K.
Any other suitable device may however be employed to keep the said bucket in
position, thus for example three guides, provided with stops engaging the upper
edges of the bucket, may be used, two of the said guides being attached to, or
formed upon the door face, and the remaining one to the rim N.
After the bucket is placed in position on the plate K, the door can be turned
over on its trunnions H, H, into the position shewn by the dotted lines in Fig. 1,
so that the said bucket is reversed and discharges its contents into the middle of
the shoot.
While this is taking place, the lower half F' of the door comes up against and
effectually closes the opening E.
After the bucket is emptied, it can at once be returned to its original position
and removed.
In each of the aforesaid special lengths of pipe D, a flap valve P is hinged,
which, when the door is opened to discharge the bucket, as above described, is
moved by means of the circular rim N into the position shewn by dotted lines
in Fig. 1. This flap valve answers two purposes, thus it is of such form that
when in the dotted position above mentioned, it closes the pipe D and so
prevents any material from above coming below it at the time of tipping, but
allows such material to fall after the bucket is again in its normal position,
thus emptying into the pipe any material which may have been deposited thereon,
and it also acts as a brake, by its pressure upon the rim N, to prevent any
undue jar to the working parts of the apparatus.
It will be seen that the action of the rim N is such that a very small motion
of the door inwards raises the flap valve fully up, so that the pipe D is quite
closed long before the bucket is discharged, and it is held in such closed position
by the said rim and not lowered again until the door is nearly returned to its
normal position.
Some suitable device is provided to enable the said flap valve to be fastened
up to close the pipe temporarily, whilst the door is taken out for cleaning, or
other purposes.
Thus, for example, two lugs R, R, may be formed upon or
attached to the inside of the pipe D in such position, that when the flap P is
raised it can be secured by a bar or stick placed under it and resting upon the
said lugs.
Suitable elastic buffers or stops Q, Q, Q², are provided to prevent any jar
occurring when the door is closed at the moment when the brake action of the flap
valve P ceases.
S is a handle attached to the back of the part F' of the door, to afford a
convenient means of pulling the said part back, after discharging the bucket.
The bottom of the pipe, or shoot, at the ground, preferably terminates with
an inverted funnel, of round or other suitable shape, in order to admit of a
receptacle on wheels being placed underneath and then raised to make a more
or less tight joint therewith, and so prevent dust flying about and at the same
time allow of the receptacle being easily and quickly removed when full.

page_text: If necessary perforations may be formed in the pipe, at or near the bottom end,
to permit the escape of air compressed by the materials falling down it.
In practice we prefer to make the pipe and the special lengths of glazed
earthenware, but cast iron, or other suitable materials may be employed in place
thereof.
We do not necessarily confine ourselves to the precise form of the special
length of pipe D shewn in the drawings, as any other shape may he employed
which will answer the required purpose, but the shape shewn is found in
practice to fulfil all requirements. Again, in place of the rim N, other means
may be employed for actuating the flap valve P, and although such valve is an
important feature the apparatus can be constructed without it, thus, in the
shoot at the top floor of a building, it is obvious that such a valve is
unnecessary.
One of the principal, if not the most important results attained by the use of
our invention, is that there is no intermediate handling of the refuse before being
discharged. The receptacle containing the said refuse is brought to the shoot,
placed on the door, and then emptied directly into the middle of the shoot
within a chamber shut off from the room, so that there is no preliminary dis-
turbance of the refuse within the room, as is the case with existing apparatus
of this class, where the receptacle has first to be emptied by hand into a hopper
or other device communicating with the shoot, with the result that the lighter
portions of the said refuse necessarily escape into the atmosphere of the
apartment.
The apparatus practically forms a straight pipe from top to bottom, without any
branches or passages communicating therewith, and is therefore readily cleaned at
any floor by simply lifting out the door belonging to such floor and closing the flap
valve, as before described.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what we
claim, is :-
1. In an apparatus of the class described; a vertical pipe or shoot, without
branches or communicating passages, and having enlarged portions or chambers D
at each floor, so arranged that the refuse is discharged within such chamber
directly into the centre of the shoot, the said chambers being closed during such
discharge and also when not in use, substantially as described.
2. In an apparatus of the class described, an enlarged section of pipe or
chamber D, having an opening E, a double, door F, F, working on trunnions H, H,
and means for supporting a bucket or receptacle on said door, substantially as and
for the purpose set forth.
3. In an apparatus of the class described, an enlarged section of pipe or
chamber D, having an opening E, a double door F, F', working on trunnions H, H,
and furnished with a platform K and rim N, substantially as and for the purpose
set forth.
4. In an apparatus of the class described, a flap valve P, suspended within the
shoot, and means for securing said valve when raised, substantially as and for the
purpose set forth.
5. In an apparatus of the class described, in combination, an enlarged section of
pipe or chamber D, having an opening E, a double door F, F, working on
trunnions H, H, and furnished with a platform K and rim N, and a flap valve P
operated automatically by said rim N, all substantially as and for the purposes set
forth.
.נ.ית
Other 1901
AMBROSE MYALL,
2, Lancaster Place, Strand, London, W.C., Agent for the Applicants.