Improvements in Chimney Pots.
Year: 1892

page_text: Date of Application, 17th May, 1892-Accepted, 25th June, 1892
}
COMPLETE SPECIFICATION.
Improvements in Chimney Pots.
I, THOMAS BROWN of 13 Boundary Lane, Chorlton on Medlock, Manchester in
the County of Lancaster, Bricklayer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
According to this invention chimney pots are fitted with hinged flaps which
deflect downward currents outwards from the chimney pots through orifices in their
sides, and which flaps are so constructed and arranged that when the chimney pots
are being swept the upward passage of the sweeping brushes causes the flaps to be
thrown back into such a position as not to obstruct the downward passage of the
brushes and that when the brushes are drawn down past the flaps they act on them
so as to restore them to their normal position.
To enable the invention to be clearly described a sheet of drawings is appended in
which Figures 1 and 2 are two sectional elevations (in planes at right angles to
each other) of an earthenware chimney pot constructed in accordance with the
present improvements. In these figures 1 is the body of the chimney pot; 2, 2, 2 are
three flaps made of iron and hinged on pins 3, 3, 3 as shown. Projecting from
each flap is a bracket 4 having a curved dentated edge as shewn. The normal
position of the flaps is clearly shown in Figure 1 by full lines, and they rest in
this position on projections 5, 5, 5 formed on the body of the chimney pot. Some-
times only two flaps, and sometimes more than three may be employed. When the
flaps are in their normal position they allow the ascending fumes to pass upwards
through the chimney pot in a zig-zag course, while if a downward current occurs
it is deflected outwards from the chimney pot by the flaps through orifices 6, 6, 6
formed in the sides of the chimney pot.
When a sweeping brush is passed upwards through the chimney pot it forces
the flaps back into the position shewn by the dotted lines in Fig. 1 and they are
there retained by the action of gravity so long as the brush remains above them.
In this position the flaps allow the brush to be drawn down again, and as it
successively reaches each bracket 4 in its downward course, its bristles press upon
the bracket and pull the corresponding flap over into its normal position. The
dentated edges of the brackets are for the purpose of increasing the pulling-over
effect of the brush upon the flaps, but the dentation may sometimes be dispensed
with. It is very important that when the brush is above the flaps, the flaps should
be prevented from seeking to resume. their normal position as otherwise the upper
edges of the flaps would engage with the underside of the boss of the brush, and
prevent the brush from being drawn down into the chimney.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare what I
claim is :-
In a chimney pot the employment of hinged flaps which deflect downward
currents outwards from the chimney pot through orifices in its sides and which flaps
are so constructed and arranged that when the chimney pot is being swept the upward
passage of the sweeping brush causes the flaps to be thrown back into such a
position as not to obstruct the downward passage of the brush and that when.

page_text: the brush is drawn down past the flaps it acts on them so as to restore them to
their normal position substantially as shown and described.
T
H. C. CARVER,
Agent for Applicant.