An Improvement in Fans for Exhausting and Propelling Air.
Year: 1888

page_text: Date of Application, 15th Feb., 1888
Complete Specification Left, 14th Nov., 1888
Complete Specification Accepted, 14th Dec., 1888
PROVISIONAL SPECIFICATION.
An Improvement in Fans for Exhausting and Propelling Air.
We JOHN CRIGHTON, ROBERT CRIGHTON and GEORGE CHAPMAN PEEL all of the
Union Engineering Company (C. Schiele & Co.) of Manchester in the County of
Lancaster Engineers do hereby declare the nature of this invention to be
as follows:-
'
This invention relates to that class of fans known as "Guibal" fans. The object of
the invention and the principle on which the same is based are the same as those of an
invention for Improvements in "Schicle" fans for which we have made application
for Letters Patent bearing even late herewith.
In the first
To adapt our said invention to "Guibal" fans we proceed as follows.
place we dispense altogether with the sliding shutter usually fitted to such fans, and
we prolong the inner wall of the discharge flue or chimney downwards for somo
distance below the point of its junction with the top of the casing and instead of making
the lower edge of this wall a horizontal line parallel to the tips of the vanes we
bring down the two sides in the form of an elliptical or a gothic arch, and by these
means we form an elliptical or arch-shaped gullet whereby the noise and vibration
are reduced to a minimum, without decreasing the volume or velocity of the air.
Dated this 14th day of February 1888.
GEORGE DAVIES,
4, St. Ann's Square, Manchester
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
An Improvement in Fans for Exhausting and Propelling Air.
We JOHN CRIGHTON and ROBERT CRIGHTON and GEORGE CHAPMAN PEEL all of the
Union Engineering Company (C. Schiele & Co.) of Manchester in the County of
Lancaster Engineers 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 that class of fans known as "Guibal" fans. The object
of the invention and the principal on which the same is based are the same as those of
an invention for improvements in "Schiele" fans for which we have made application
for Letters Patent No. 2268 and bearing even date herewith.
The nature of our said invention and the manner in which the same is to be
performed will be readily understood on reference to the two sheets of drawings
hereunto annexed and the following explanation thereof:
66 Guibal" fan and
Sheet 1 of the drawings is a sectional elevation showing a
casing constructed according to our invention, and Sheet 2 of the drawings is a
vertical section taken through about the line A-B in Sheet 1. the casing being shown
in both views as formed of brickwork.
To adapt our said invention to "Guibal" fans we proceed as follows. In the first
place we dispense altogether with the sliding shutter usually fitted to such fans, and
we prolong the inner wall a of the discharge flue or chimney downwards for some
distance below the point of its junction with the top of the casing (see Sheet 1.)
and instead of making the lower edge of this wall a a horizontal line parallel to the
tips of the vanes of the fan d we bring down the two sides in the form of an elliptical
or a gothic arch (as shown at a Sheet 2) and by these means we form an elliptical or
arch-shaped gullet whereby the noise and vibration are reduced to a minimum
without decreasing the volume or velocity of the air.
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―
The improvement in the casing of "Guibal" fans consisting in prolonging the
inner wall of the discharge flue or chimney and bringing down the two sides thereof
in the form of an elliptical or gothic arch so as to form an elliptical or arch-shaped
gullet substantially in the manner and for the purpose hereinbefore set forth and
illustrated by the drawings annexed.
Dated this 13th day of Novemba 1000