Improvements in Airtight Ash and Dust Shoots.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Airtight Ash and Dust Shoots.
I WILLIAM RICHARDSON of Beech Hill Mansfield in the County of Nottingham,
Managing Director of The Meadow Foundry Company Limited Mansfield 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 said invention relates to the material used and the manner of making
an airtight and dust proof joint on all the four sides of the door also in the
provision of a buffer or elastic stop to the inner tilting dust box thereby preventing
damage when the door is suddenly opened and enabling the door to be opened
noiselessly.
In the accompanying drawings
Fig. 2. is a front elevation of the complete ash or dust shoot closed, Fig. 1. is
a section at A B Fig. 2, showing the shoot closed and also open by the dotted
lines.
Fig. 7 is a perspective view of the shoot shown open.
Figs. 3 and 4 are full sized sections of a portion of the top part of the shoot,
shewing the means and manner of making the airtight joint.
Fig. 4 shows the door partially open and Fig. 3 shows the same closed.
Figs. 5 and 6 are full sized sections of portions of the bottom part of back plate
of shoot and a portion of the clapping plate of inner tilting box, shewing the
provision of the buffer and manner of securing same.
Having given the foregoing general description of the drawings I now proceed
to describe same in detail.
A. Figs. 1. 2 and 7 represents the outer case or box which is built in the wall or
structure, and is of a somewhat similar character in shape to what is generally
used. B. Figs. 1. 2. 3. 4 and 7 represents a frame bolted on to the face of said
casing A and to which the door C. Figs. 1. 2. 3. 4 and 7, and inner tilting box D
Figs. 1 and 7 is hinged. The novelty in the construction of the said casing A.
and the said frame B, consists first in having a projection E. Figs. 1. 3. 4 and 7
all around the opening of said case A, corresponding in height with the thickness
of said frame B, secondly in having a small space X. Figs. 3. 4 and 7 between the
said projection E and the inside of said frame B, thirdly in the use of -a tubing F.
Figs. 3 and 4 of india rubber or other elastic material, having a flange of rubber
canvas, or other suitable material which is first secured by the flange of said tubing
to the said frame B in such a position so as to allow the said tubing F-when the
said frame B is bolted in position on the said case A-to be held securely in
position, and to bear against the said projection E. which thereby holds up the
said tubing F evenly around all four sides of the opening.
It will be evident from this description that when the said door C is closed and
secured by the fastener a perfectly airtight and dust proof joint is made, without
any severe strain upon the door or hinges, owing to the yielding nature of the said
tubing F, and the further elasticity of the material of which it is constructed.
The further novelty of my invention refers to the use of any soft buffer made of
any suitable material and more particularly the use of the said flanged tubing of
india rubber or other elastic material herein before referred to and as shewn at F. 1.
Figs. 1. 5 and 6 at the bottom edge of the back plate A. 1. Figs. 1.5 and 6. of
said case A, the object being to prevent damage to the said tilting box D when the
door is suddenly or violently opened and to enable this movement to be performed
noiselessly. By the opening of the door the bottom plate D. 1. Figs. 1. 5 and 6 of

page_text: said tilting box D is brought into contact with the soft buffer F. 1. Figs. 1. 5 and 6
thereby securing the objects desired.
A further novelty consists in the manner of securing the said tubing F. 1. in
position namely by the bevilled projecting stop strip G. Figs. 1. 5 and 6. which is
formed in the said back plate A. 1. preventing the said buffer from being forced
upwards and which is further assisted in this respect by the strap H, Figs. 5 and 6
which being bolted on to the said back plate A. 1. secures at the same time the
flange or other provision of the said buffer F. 1. in au immoveable position.
It should be pointed out that in each case where the tubing or other soft elastic
material is used for making the joint around the door or the buffer for the tilting
box to strike against the provision for renewals of such materials is of the simplest
character.
It must be understood that I do not confine myself to the particular form of the
said flanged or other tubing F. and F. 1. herein described or shown in the drawings
or to the particular nature of the material used in the manufacture of such flange
or other tubing as described herein. I claim to use any other form or shape and
made of any other material or materials suitable for the attainment of the same
objects and to suit varying circumstances.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1. The application and employment of the said flanged or other tubing F.
and F. 1. made of india rubber or other suitable material or tubing with other
attachments in place of the said flange by which it may be secured in a similar
manner or tubing without flange or solid india rubber or other suitable clastic
material or tubing of any other form or shape other than that shown in the drawings
and as described herein and secured in a similar manner to that herein described
and shown and for the purpose as set forth.
2. The application and employment of the said projection E whether of the
form or shape shown or of any other suitable form or shape having the same object,
and of the said space X by which the said tubing or other material F. and F. 1. is
held in the proper position as shown and described.
3. The manner of securing the said tubing or other material as shown and
described.
4. The application and employment of the said tubing F. 1. or other material as
described in Claim 1. as and for the purposes as set forth.
5. The application and employment of the said bevelled projecting stop strip G
and the said strap H as shown and described and for the purposes as set forth.
Dated this the 22nd day of March 1893.
WILLIAM RICHARDSON.