Improvements in Grate-bars used in Machines known as "Scutchers."
Year: 1890

page_text: Date of Application, 16th May, 1890
Complete Specification Left, 23rd Sept., 1890-Accepted, 25th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Grate-bars used in Machines known as
"Scutchers."
I SAMUEL CROSSLEY of Stansfield Road Iron Works Todmorden in the West.
Riding of the County of York Machinist do hereby declare the nature of this invention
to be as follows:-
"
This invention relates to the construction of the grate bars used in the machines known
as scutchers" employed in the preparation of cotton for spinning and is equally
applicable to those "scutchers" known as "openers," intermediates and "finishers."
The object of the invention is to prevent the clogging of the grate-bars with the
cotton which not only prevents the dirt and seeds or other refuse from falling through
readily but also causes unevenness in the "lap" or
fleece."
Hitherto these grates (whether mounted longitudinally, transversely, or diagonally)
have always been made from straight bars.
According to my invention I make the grates for these machines from bars which
are curved, waved, or vandyked horizontally, whether the same are arranged in a
longitudinal transverse or diagonal direction, and it is found in practice that grates
made from bars thus curved waved or vandyked are not so liable to become choked
or clogged, and will hence allow the seeds and dirt or other refuse to fall away more
readily and also that the "fleece or "lap" formed by the machine will be more even
than when the grate is made from straight bars as hitherto practised. .
"
Dated this 15th day of May 1890.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Grate-bars used in Machines known as
"Scutchers."
I SAMUEL CROSSLEY of Stansfield Road Iron Works, Todmorden in the West Riding
of the County of York, Machinist, 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 the construction of the grate bars used in the machines
known as "scutchers" employed in the preparation of cotton for spinning, and is
equally applicable to those scutchers known as openers" intermediates and
"finishers."
The object of the invention is to prevent the clogging of the grate bars with the
cotton which not only prevents the dirt and seeds or other refuse from falling through
readily, but also causes unevenness in the "lap" or "fleece."
The nature of my invention and the manner in which the same is to be performed
or carried into practical effect will be readily understood on reference to the sheet of
drawings hereunto annexed and the following explanation thereof.
Hitherto these grates which are placed between the beater or cylinder and the
perforated cage (whether mounted longitudinally, transversely or diagonally) have
always been made from straight bars of steel or other metal..
According to my invention I make the grates for these machines from bars of steel
or other metal which are not straight but which are curved, waved, vandyked or
otherwise bent horizontally.
Fig. 1 on the drawing is a plan view of a grate for a "scutcher" made with waved

page_text: bars according to my invention, and Fig. 2 is a plan view and elevation on a larger
scale, of one of such grate bars separately.
Figs. 3, 4, 5, and 6, show other forms of waved or bent bars which may also be
employed but I wish it to be distinctly understood that 1 do not desire to confine
myself to the particular patterns of bars whether curved waved vandyked or otherwise
bent horizontally and that I do not confine myself to the use of screw bolts and washers
to hold the same together as shown at Fig. 1 as they may be fixed in any convenient
manner, and as before mentioned they may be arranged in a logitudinal, transverse, or
diagonal direction, and it is found in practice that grates made from bars thus curved,
waved, vandyked, or bent horizontally are not so liable to become choked or clogged,
and will hence allow the seeds and dirt or other refuse to fall away more readily, and
also that the "Heece "
or "lap" formed by the machine will be more even than when
the grate is made from straight bars as hitherto practised.
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 manufacture and use in machines known as "scutchers" of grate bars which
are not straight (as hitherto) but which are curved, waved, vandyked, or otherwise
bent horizontally substantially in the manner and for the purpose hereinbefore set forth
and illustrated by the, drawings 'annexed.
Dated this 22nd day of September 1890.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.