CLEANING COTTON AND OTHER FIBROUS SUBSTANCES
Year: 1885

page_text: I, MARK GARFITT Cotton Spinner Middleton Road Oldham, Lancaster do hereby
declare the nature of the said invention for CLEANING COTTON AND OTHER FIBROUS
SUBSTANCES to be as follows:-
In the application of Bars used in vertical openers generally called the Crighton
opener The improvement consists in using two, three, or four lengths of bars, in
place of one, as at present in use, in the framework round the upright beater. The
object being to get the bars at varying distances apart, each row of bars from the
top having a wider opening.
I MARK GARFITT of Middleton Road Oldham in the County of Lancaster Cotton
Spinner do hereby declare the nature of my invention for IMPROVEMENT IN
APPARATUS FOR CLEANING COTTON AND OTHER FIBROUS SUBSTANCES 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 an improved method of applying Bars in two or more
rows to the framework of " Openers" which are used for cleaning Cotton or other
fibrous substance generally known as "Crightons Openers" and to the framework
of other openers in which the framework is of a conical shape.

page_text: The Bars to the framework of conical openers heretofore used are placed in
one row round the framework and the framework being of a conical shape it
follows that the spaces between the bars at the wider end of the framework are
greater than the spaces between the bars at the narrower end of the framework
and where the fibrous substance enters the machine for cleaning and where there
is the greater need that the dirt should be readily ejected. The consequence is
that a large proportion of dirt is carried forward in the machine with the cotton or
other fibrous substance which dirt if the spaces between the bars at the narrower
end of the framework had been greater would have been there thrown out and
there is a waste of good fibrous substance through the spaces between the bars at
the wider end of the framework.
By my method two or more rows of Bars are placed round the framework as
shewn in the accompanying drawing of the interior segment of a framework (there
shewn as fitted with three rows of Bars).
The bars are made from iron or preferably hardened steel placed in rows round
the framework (as exampled in the interior view of a segment of a framework in
the accompanying drawings) set at variable distances apart so that the spaces left
between the bars at the narrower end of the framework shall be greater than the
spaces between the bars at the wider end of the framework (taking the segment
above referred to as an example the spaces between the bars set between EF
and G H are greater than the spaces between the bars set between CD and E F
and the spaces between the bars set between CD and E F are greater than the spaces
between the bars set between A B and C D). The bars may be of triangular shape
as exampled in the "plans of one segment shewn in the said drawings or
otherwise and held in position as shown there and by plan "Section through K L"
or otherwise.
"
By this method most dirt will be thrown out at the narrower end of the frame-
work where the spaces between the bars are of greater width than the spaces
between the bars at the wider end of the framework and by reason of the spaces
between the Bars at the wider end being contracted there is less waste of good
fibrous substance through such spaces than under the old system where the spaces
are wide at the wider end and nearly closed at the narrower end.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is performed I declare that what I claim is:—
The application of two or more sets of Bars set at variable distances in the
framework of conical openers substantially as and for the purpose herein before
described and represented by the accompanying drawings.
Dated this 14th day of April 1886