Year: 1886

page_text: Date of Application, 11th Aug., 1886.
Complete Left, 11th May, 1887.
Complete Accepted, 17th June, 1887.
I JAMES SALTER FARMER of Adelphi Works Salford in the County of Lancaster
Engineer do hereby declare the nature of this invention to be as follows:-
The object of this invention is to Eliminate the sand or other foreign matter con-
tained in a sample of raw cotton and by weighing the sand or other impurities against
the purified sample, to ascertain the percentage of foreign matter contained therein
and thus test the purity of the bulk.
The apparatus which I employ for this purpose consists principally of a box or
casing of a twin cylindrical form having internal pegs or projections, in which casing
revolve two parallel axles each provided with a number of projecting arms or pegs
revolving between the fixed internal pegs or projections in the casing. The portion
of the casing where the two cylinders intersect each other is open and the revolving
arms or pegs overlap or interlace each other at this point.
The casing is made in two parts hinged together, being divided along the centre
line of the two axles so that the upper portion forms a kind of hinged lid, and this
part is made with a hopper for the introduction of the raw cotton into the apparatus
just above the point of intersection of the two cylinders. The bottom portion of the
casing is made of wire gauze or otherwise perforated to allow the sand or other
foreign matter to fall through into a trough or dish beneath.
The two axles carrying the projecting arms or pegs are geared together by a pair
of spar wheels and one of them is provided with a winch handle whereby they may be
caused to revolve inwards and downwards in opposite directions in order to draw the
cotton in and then open it and shake it so as to cause the sand and other impurities to
be separated therefrom and fall through the wire gauze or perforations.

page_text: The cotton being thus purified, the hinged lid or cover of the casing is raised and
the cotton removed, and this purified cotton being then weighed against the sand
and other impurities eliminated therefrom the percentage of the latter to the former
can be readily ascertained and thus an accurate and reliable test of the purity of the
sample of raw cotton can be obtained.
I prefer to make both the fixed and revolving pegs or projections in the form of
hollow cones of sheet copper or other suitable metal, but they may be made of solid
material if desired.
DJ LL 1
1000
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: I JAMES SALTER FARMER of Adelphi Works Salford in the County of Lancaster
Engineer 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 :-
The object of this invention is to Eliminate the sand or other foreign matter con-
tained in a sample of raw cotton and, by weighing the said sand or other impurities,
to ascertain the percentage of foreign matter contained therein and thus test the purity
of the bulk.
My invention will be readily understood from the two sheets of drawings hereunto
annexed and to the following explanation thereof.
Fig. 1. is a transverse section and Fig. 2. a sectional plan view of an apparatus
constructed according to my invention.
The apparatus which I employ for the above purpose consists principally of a box
or casing a, a of a twin cylindrical form having internal pegs or projections b, b in
which casing revolve two parallel axles c, c c¹, c₁ each provided with a number of
projecting arms or pegs d, d and d¹, d' revolving between the fixed internal pegs or
projections b, b in the casing a, a¹.
The portion of the casing where the two cylinders a, a' intersect each other is open
and the revolving arms or pegs d, d' overlap or interlace each other at this point.
The casing a, a is made in two parts preferably hinged together as seen at a*, ax
Fig. 1. being divided along the centre line of the two axles c, c¹ so that the upper
portion forms a kind of hinged lid, and this part is made with a hopper or opening e, e
for the introduction of the raw cotton into the apparatus just above the point of inter-
section of the two cylinders a, a¹². The bottom portion of the casing a, a is provided
with openings or shoots f, f covered with wire gauze f*, or it may be made of wire
gauze or otherwise perforated to allow the sand or other foreign matter to fall through
into a trough or dish 9, 9 beneath.
The two axles c, e carrying the projecting arms or pegs d, d¹ are geared together
by a pair of spur wheels h, hi, i and one of them is provided with a winch handle k, k
whereby they may be caused to revolve inwards and downwards in opposite directions
in order to draw the cotton in and then open it and shake it so as to cause the sand
and other impurities to be separated therefrom and fall through the openings f, ƒª
(or through the wire gauze or perforations).
The cotton being thus purified, the hinged lid or cover of the casing is raised and
the cotton removed, and the sand and other impurities Eliminated therefrom being
weighed the percentage of the latter to the former can be readily ascertained and thus

page_text: an accurate and reliable test of the purity of the sample of raw cotton can be
obtained.
I prefer to make both the fixed and revolving pegs or projections b, 62 and d, d¹ in
the form of hollow cones of sheet copper or other suitable metal as shown by the
drawings, but they may be made of solid materials if desired.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
An apparatus for testing raw cotton consisting of a casing of twin-cylindrical form
provided with fixed projections and a pair of revolving shafts provided with arms or
pegs, all constructed and operating substantially as hereinbefore described.
1011 1
1007
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.