Improvements in Sifters Applied to Chaff Cutters for Sifting Cut Hay, Straw, Clover, or the like.
Year: 1893

page_text: Date of Application, 29th Apr., 1893
Complete Specification Left, 17th Jan., 1894-Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Sifters Applied to Chaff Cutters for Sifting Cut
Hay, Straw, Clover, or the like.
I, JAMES GADSBY RICHMOND, of the Firm of Richmond and Chandler, of
Southall Street, Manchester, in the County of Lancaster, Agricultural Implement
Makers, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in sifters applied to chaff cutters for sifting
cut hay, straw, clover or the like.
Sifters for this purpose have usually been made to work longitudinally, or some-
times laterally, and my improvements consist chiefly in imparting a circular or
combined longitudinal and lateral motion to the riddle or screen, whereby its sifting
capacity is very much increased. I suspend or support the riddle frame from either
above or below by means of chains, cords, rods or equivalents, and I drive the
riddle either from above or below by means of a crank or eccentric working
parallel or nearly parallel with the riddle, the motion thus given to the riddle or
sereen being very similar to that imparted to the ordinary small riddle when used
by hand. I make the riddles or screens of any suitable material and perforate
them, as has been usually done, with holes of varying sizes, in order to produce
chaff of different lengths as required. I also make flutes, grooves or corrugations
across the riddle which retard to some extent the escape of the chaff from the
upper face of the riddle thus retaining it until it is properly sifted so that all the
short chaff passes through the holes in the riddle and does not escape over the end
of it along with the cavings.
Dated this 28th day of April 1893.
H. B. BARLOW & GILLETT,
Agents for Applicant.
COMPLETE
SPECIFICATION.
Improvements in Sifters Applied to Chaff Cutters for Sifting Cut
Hay, Straw, Clover, or the like.
I, JAMES GADSBY RICHMOND, of the Firm of Richmond and Chandler, of
Southall Street, Manchester, in the County of Lancaster, Agricultural Implement
Makers, 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 :-
My invention relates to improvements in sifters applied to chaff cutters for sifting
cut hay, straw, clover or the like.
Sifters for this purpose have usually been made to work longitudinally, or some-
times laterally, and my improvements consist chiefly in imparting a circular or
combined longitudinal and lateral motion to the riddle or screen, whereby its sifting
capacity is very much increased I suspend or support the riddle frame from either
above or below by means of chains, cords, rods or equivalents, and I drive the
riddle either from above or below by means of a crank or eccentric working
parallel or nearly parallel with the riddle, the motion thus given to the riddle or
screen being very similar to that imparted to the ordinary small riddle when used
by hand. I make the riddles or screens of any suitable material and perforate
them, as has been usually done, with holes of varying sizes, in order to produce
D

page_text: chaff of different lengths as required. I also make flutes, grooves or corrugations
across the riddle which retard to some extent the escape of the chaff from the
upper face of the riddle, thus retaining it until is properly sifted so that all the
short chaff passes through the holes in the riddle and does not escape over the end
of it along with the cavings.
And in order that my invention may be fully understood and readily carried
into effect I will describe the accompanying three sheets of drawings reference
being had to the figures and letters marked thereon.
Fig. 1 is an end clevation and Fig. 2 a front view of a chaff cutting machine to
which my improved sifter is applied and Fig. 3 is a similar view to Fig. 1 of a
slightly modified arrangement.
с
In the drawings, a represents the frame of the chaff cutting machine, & the
flywheel shaft on which is secured a bevel wheel c which gears into a bevel wheel d
secured upon an upright shaft e supported in convenient bearings. To the lower
end of the shaft e is secured a radial arm or crank which carries an eccentric stud
or crank pin g. The riddle or screen h, which has a bottom of perforated wood,
sheet metal, or wire work, is suspended from each corner by rods or chains i which
are linked upon brackets supported on a suitable framework k; a metal or other
plate is attached to the frame of the riddle at or near its centre and the crank
pin g enters a hole in this plate l.
When the chaff cutting machine and the riddle h are set in motion, the chaff, i.e.
the hay, straw, clover, or the like, as it is cut by the machine falls on to the
riddle to which a circular or combined longitudinal and lateral motion, resembling
that given to the ordinary small hand riddle, is imparted by the peculiar mode of
suspending and driving it. The riddle is in this manner made much more effective,
and the material as it falls upon it is divided as usual, the "cavings" or long chaff
passing off the riddle at the lower side, Fig. 1, while the main portion of the chaff
passes through the perforated bottom of the riddle.
In Fig. 3 the framework is dispensed with, the riddle supporting chains i
being suspended from hooks m attached to the floor.
The drawings represent the riddle driven from the chaff cutting machine but it
is evident that it could be driven independently and in some cases this would be
desirable.
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:
In a combined chaff cutting and sifting machine-
1. Imparting a circular or combined longitudinal and lateral motion to the riddle
or screen substantially as and for the purposes herein described and as illustrated
by the accompanying drawings.
2. The combination with the riddle or screen 1, suspended or supported as
described, of an eccentric or crank, and means for driving the same, for imparting a
circular or combined longitudinal and lateral motion to said riddle or screen
substantially in the manner and for the purposes herein set forth.
Dated this 16th day of January 1894.
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicant.