Improvements in Chimney Tops.
Year: 1894

page_text: Date of Application, 19th Dec., 1894
Complete Specification Left, 15th Sept., 1895-Accepted, 19th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in Chimney Tops.
I, LEVI MARSDEN, of 3 Union Street, Darwen, in the County of Lancaster,
Clogger, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in chimney tops or cowls actuated by the
wind, and thereby caused to move to such a position that the closed or partly
closed back of the cowl receives, the force of the wind, and the open part is
protected by the back or closed part, so that down draughts are prevented. The
object of the invention is to provide a revolving or moving top which requires no
grease, oil, or other lubricant, and cannot rust; at the same time having the fullest
freedom of movement, and the top of the cowl is so constructed that a draught of
air passes from the back of the same through the front opening, carrying the smoke
with it, thus ensuring an efficient up draught of the chimney.
According to this invention, I form at or near the top of the chimney a circular
trough, in which are carried, preferably, three or more glass balls or rollers. The
lower part of the cowl is circular and flanged, the circular part resting on the glass
balls or rollers, and the flange projecting over the trough, protects the latter and
the balls or rollers from rain and dust or dirt.
The upper part of the cowl is made flat at its sides, and with a double curved
top, the lower part of the back being slightly open so as to allow air to pass
through the top of the cowl.
The cowl and trough may be made of metal or earthenware.
I, LEVI MARSDEN, of 3 Union Street, Darwen, in the County of Lancaster,
Clogger, 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 relates to improvements in chimney tops or cowls actuated by the
wind, and thereby caused to more to such a position that the closed back of the
cowl receives the force of the wind, and the open part is protected by the back
or closed part, so that down draughts are prevented. The object of the invention
is to provide a revolving or moving top which requires no grease, oil, or other
5 lubricant, and cannot rust; at the same time having the fullest freedom of
movement, and the top of the cowl may be so constructed that a draught of air
passes from the back of the same, through the front opening, carrying the smoke
with it, thus ensuring an efficient up draught of the chimney. The improvements
are equally applicable to ventilators or exhaust shafts.

page_text: Such being the nature and object of my said invention, the following is a
complete description of same, reference being had to the accompanying drawing, in
which―
Fig. 1. is a side elevation partly in section of a chimney top, or shaft of a
ventilator, the top or cowl of which is mounted thereon in accordance with this
invention.
According to this invention, at 1 is a chimney top or pot, or shaft of a ventilator,
and at or near the top of the chimney or ventilator shaft. 1, is fixed by screws or
bolts 2, or otherwise, a circular trough 3, in which are carried several glass balls
or rollers 6 sufficient to almost fill the trough 3. The lower part of the cowl 10 is
circular, and flanged at 4, the circular part 5 resting on the glass balls or rollers 6,
and, the flange 4, projecting over, the trough 3, protects the latter, and the balls or
rollers 6 from rain and dust or dirt.
The upper part of the cowl 10 is made in the ordinary manner, and the lower
part of the back may be slightly open at 7 so as to allow air to. pass through the
top of the cowl.
The cowl and trough may be made of metal or, earthenware, but preferably of
metal, which may be attached to either a metal or earthenware chimney top or
ventilator shaft.
8. is the vane against which the wind acts, so' that' the cowl 10 is always
maintained in the correct position according to the direction of the wind, and this
cowl 10 may be of any of the well known shapes.
The trough 3 and cover or flange 4 are perforated as at 9, so that rain will wash
and keep clean the balls or rollers 6, and the interior of the trough. The top of
the chimney pot 1 extends above the trough 3 so that. the latter and the rollers 6
are protected from soot to a great extent.
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 :-
The top, pot, or shaft 1, trough 3, balls or rollers 6, protecting flange 4, and
cowl 10, all in combination, as and for the purpose herein described, and sub-
stantially as illustrated by the annexed drawing.
Dated this 16th day of Contambay 1905
.
LEVI MARSDEN,
By his Agents, Brierley & Howard,
Penny Bank Chambers, Halifax.