Improvements in Thrashing and Winnowing Machines.
Year: 1890

page_text: Date of Application, 22nd May, 1890
Complete Specification Left, 2nd Feb., 1891-Accepted, 22nd July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Thrashing and Winnowing Machines.
We, ALFRED SHUTTLEWORTH, and FRANK SHUTTLEWORTH, both of Stamp
End Works, Lincoln, Agricultural Engineers, and CHARLES CLARK and ROBERT
GAMBLE, Machine Foreinen, in the employ of Messrs. Clayton & Shuttleworth, of
Stamp End Works, Lincoln, do hereby declare the nature of this invention to be
as follows:-
In thrashing machines as heretofore usually constructed with a series of riddles,
the blower has been arranged so as to project air into the space between the lowest
and the intermediate riddles, for the purpose of winnowing and removing the chaff
and foreign matters from the grain. With this arrangement, when doing some
descriptions of thrashing, as for instance, thrashing oats or corn that has grown on
the stack, we have found that a very large amount of foreign matter and chaff is
liable to accumulate on the top riddles and it results that the machine is liable to
become clogged. Now the object of this invention is to obviate this evil, for which
purpose we construct the machine with one or more blowers and in connection with
the blower case or cases we provide passages for conducting air respectively to the
space between the top riddle and the inclined board below it, and to the space
between the intermediate riddle or riddles, and the bottom riddle and in connection
with these passages we provide valves or shutters and means for adjusting them
according to requirement in such a manner that the blast can be directed either
into the space between the top riddle and the inclined board located below that
riddle or into the space or spaces between the intermediate riddle or riddles and
the bottom riddle; or the blast can be divided, part being directed into the space
between the top riddle and the before mentioned inclined board and the remainder
into the space or spaces between the intermediate and lower riddles. With this
arrangement we are enabled to equalise the work of the machine as respects the
separation of chaff and impurities from the grain and to prevent clogging, by
keeping the pulse or cavings always in motion.
Although we have described the invention as applied to effect winnowing in
thrashing machines independent winnowing machines can obviously be constructed
according thereto, whether designed to be worked by steam, manual or other
power.
4
1000
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Thrashing and Winnowing Machines.
We, ALFRED SHUTTLEWORTH, and FRANK Shuttleworth, both of Stamp
End Works, Lincoln, Agricultural Engineers, and CHARLES CLARK and ROBERT
GAMBLE, Machine Foremen in the employ of Messrs. Clayton and Shuttleworth,
of Stamp End Works, Lincoln, 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 :-
Thrashing machines have been constructed or proposed to be constructed with
winnowing arrangements of various forms, the air blast being in some cases

page_text: directed through the upper riddle, in others through the intermediate riddle or
riddles.
In thrashing machines as heretofore most usually constructed with a series of
riddles, the blower has been arranged so as to project air into the space between
the lowest and the intermediate riddles, for the purpose of winnowing and removing
the chaff and foreign matters from the grain. With this arrangement when doing
some descriptions of thrashing, as for instance thrashing oats or corn that has
grown on the stack, we have found that a very large amount of foreign maiter and
chaff is liable to accumulate on the top riddle and it results that the machine is
liable to become clogged. Now the object of this invention is to obviate this evil,
for which purpose we construct the machine with one or more blowers, and in
connection with the blower case or cases we provide passages for conducting air
respectively to the space between the top riddle and the inclined board below it,
and to the space between the intermediate riddle or riddles and the bottom riddle,
and in connection with these passages we provide valves or shutters and means for
adjusting them according to requirement in such a manner that the blast can be
directed either into the space between the top riddle and the inclined board located
below that riddle, or into the space or spaces between the intermediate riddle or riddles
and the bottom riddle; or the blast can be divided, part being directed into the space
between the top riddle and the before mentioned inclined board, and the remainder
into the space or spaces between the intermediate and lower riddles. With this
arrangement we are enabled to equalise the work of the machine as respects the
separation of chaff and impurities from the grain, and to prevent clogging by
keeping the pulse or cavings always in motion.
Although we have described the invention as applied to effect winnowing in
thrashing machines independent winnowing machines can obviously be constructed
according thereto whether designed to be worked by steam, manual, or other
power.
In the accompanying drawings
Fig. 1 is a longitudinal vertical section of so much of a thrashing and winnowing
machine as is necessary to illustrate the application thereto of our improvements.
Fig. 2 is a side elevation of part of the machine, shewing the means employed for
adjusting and fixing the valves or shutters.
1 is the top riddle, 2 an inclined board arranged below the same, 3 an inter-
mediate riddle arranged below the inclined board, and 4 a bottom riddle. 5 is a
blower the case 6 of which is formed with an outlet in communication with
passages 7 and 8 for conducting the air delivered by the blower respectively to
the space 9 between the top riddle and the inclined board 2 below it, and to
the space 10 between the intermediate riddle 3 and the bottom riddle 4. The
passages 7 and 8 are provided with flap valves or shutters 11 and 12 respectively
each of which is capable of being adjusted and fixed in any desired position in its
passage by means of an external handle 13. In the example shewn each handle 13
is in the form of an arm formed at its outer end with a circular slot 14 through
which extends a screw stud 15 that is fixed in one side of the casing forming the
passage 8 and carries a nut by which the arm and attached valve or shutter can be
fixed in position. Both arms 13 can be on the same side of the air passage 8 as
shown, but one is arranged further out than the other so that one can work clear of
the other. By the means described the valve 12 may be closed, and the valve 11
opened so that the whole of the blast delivered by the blower 5 can be directed
past the valve 11 and through the passage 7 into the space 9 between the top
riddle and the inclined board 2; or the valve 11 may be closed and the valve 12
opened so that the whole of the blast can pass through the passage 8 into the
space 10 between the intermediate riddle 3 and the bottom riddle 4; or each valve
may be held in a partly opened attitude as shewn so that the blast will be divided,
part being directed past the valve 11 and through the passage 7 into the space 9,
and the remainder past the valve 12 and through the passage 8 into the space 10.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The combination and arrangement of parts shewn in and described with reference
to the drawings annexed in which the passages 7, 8 and the valves 11, 12 are so
arranged in relation to the inclined board 2 and riddles 1, 3, and 4, that the blast
can be directed either into the space between the top riddle and the inclined board
located below that riddle, or into the space or spaces between the intermediate
riddle or riddles and the bottom riddle; or the blast can be divided, part being
directed into the space between the top riddle and the before mentioned inclined
board, and the remainder into the space or spaces between the intermediate and
lower riddles as explained.
Dated this 2nd day of Fohm 1901
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.