Improvements in Chimney Cowls.
Year: 1891

page_text: Date of Application, 7th May, 1891
Complete Specification Left, 6th Feb., 1892-Accepted, 19th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Chimney Cowls.
I, JAMES CARTLEDGE WATERHOUSE, of Henry Street, Wakefield, Yorkshire,
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to chimney cowls, the object of my improvements being to
lubricate the upper portion of the revolving spindle which carries the vanes, and
also to adjust the flint bearing upon which the foot of the spindle rests.
In some classes of cowls an oil box is used in which the central rotating spindle
revolves, and so long as the box is full of oil, the spindle is freely lubricated, but as
soon as the surface of the oil gets below the upper spindle bearing, then there is
considerable friction and unpleasant noises occasioned thereby. To overcome this
objection, I place within the upper spindle bearing a series of carbon plugs
commonly called "metaline," which provides a smooth and noiseless bearing, and as
the bearing which contaius these oil-less carbon plugs is situated near the top of
the main spindle, it forms a strong support and steadies the spindle.
The flint bearing is placed upon a set screw in the flint box, so that it can be
adjusted, and preferably a washer made of leather or other suitable material is
placed between the flint and the foot of the spindle for the latter to rest upon.
The radial arms carrying the vanes are attached to a flange on the main spindle
by india-rubber or other soft connections, so as to make the parts noiseless and
thus avoid the rattling sounds which frequently occur in chimney cowls.
Dated this 6th day of May 1891.
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
Improvements in Chimney Cowls.
I, JAMES CARTLEDGE WATERHOUSE, of Henry Street, Wakefield, Yorkshire,
Gentleman, 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 chimney cowls and to ventilators, the object of my
improvements being to lubricate the upper portion of the revolving spindle which
carries the vanes, and also to adjust the flint-bearing upon which the foot of the
spindle rests.
In some classes of cowls and ventilators an oil box is used in which the central
rotating spindle revolves, and so long as the box is full of oil, the spindle is freely
lubricated, but as soon as the surface of the oil gets below the upper spindle-
bearing then there is considerable friction and unpleasant noises are occasioned
thereby. To overcome this objection I place within the upper spindle-bearing a
series of carbon plugs commonly called "metaline" which provide a smooth and
noiseless bearing requiring no oil or lubricant other than the carbon plugs and as
the bearing which contains these oilless carbon-plugs is situated near the top of the
main spindle, it forms a strong support and steadies the spindle.
The flint or steel base bearing upon which the spindle rests is placed upon a set
screw in the oil box, so that it can be adjusted, and preferably a washer made of
leather or other suitable material is placed between the flint and the set screw.

page_text: In order that this invention may be better understood I will make reference to
the accompanying sheet of drawings illustrative thereof, wherein
my
Fig. 1 is front elevation and Fig. 2 vertical section of a cowl or ventilator having
improvements applied thereto;
Fig. 3 is a plan of Fig. 1 and
Fig. 4 is a cross section of Fig. 2 taken through the line 12, and
Fig. 5 is an enlarged detail of the improved parts.
The revolving cowl or hood A may be of ordinary construction provided with a
vertical spindle a fastened by the set screw b to the cross bar or bearer c.
For
carrying and lubricating the said spindle I employ a tube d screwed into sockets e
and f; the upper socket carries a flange a connected by bolts to the angle iron
bars which are bolted to the cylinder i. Between the flange g and the angle iron
bars I insert a piece of asbestos or other fireproof packing as shewn at j such
packing being used as a non-conductor of sound between the cylinder i and the
upper portion of the cowl. In order to steady the spindle a I introduce into the
top socket e a metal bearing k containing a series of carbon plugs or "metaline" y
thereby providing a smooth noiseless and oilless bearing, and in order to further
diminish or lessen the noise caused by friction of the revolving parts and to prevent
dirt getting into the bearing k, I place onto the top of the said bearing k a cap or
washer but between the said bearing and the cap, there is an asbestos ring n.
Near the upper end of the spindle a I form a groove which receives the point of
the set screw o, which, whilst permitting the spindle to revolve, prevents its being
displaced upwards. The tube d is supplied with oil or other lubricant through
branch pipe
which tube when full of oil must be below the bottom of the
bearing . In the bottom socket f I screw a plug 9 on the top of which is a ring r
made of asbestos, leather or other suitable material, and on the top of the said ring
is a flint or steel bases kept firmly down by the screwed nipple t. The foot or
bottom point of the revolving spindle a rests upon the flint, and is steadied by the
brass washer x.
By constructing and arranging the parts carrying and supporting the revolving
spindle, and also by lubricating the spindle as above described and illustrated in
the drawings, the cowl or ventilator is noiseless in its action, more durable, and free
from many of the objections to be found in cowls or ventilators of a different
construction.
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 :-
Firstly. The combination with the spindle of a revolving chimney cowl of a
metaline or oilless carbon plug such as substantially as described.
Secondly. The means or method of lubricating and rendering noiseless and more
durable revolving chimney cowls or ventilators in the manner substantially as herein
shewn and described.
Thirdly. The means or method herein shewn and described for adjusting the
spindle bearing.
Fourthly. The general arrangement and construction of the parts, for supporting
and carrying and lubricating the spindle in the manner substantially as herein
shewn and described.
Date : 5th of 1900
TASKER & CROSSLEY,
Halifax, Agents.