Improvements in Thrashing and Winnowing Machines.
Year: 1895

page_text: 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 Foremen, in the employ of Messrs. Clayton & Shuttleworth, of
Stamp End Works, Lincoln, do hereby declare the nature of this invention to be
as follows:-
According to this invention, which is an improvement on that for which Letters
Patent No. 7937 of 1890 were obtained by us we provide in connection with the
passages for conducting air from the blower case or cases to the space between the
top riddle and the inclined board below it and to the space between the inter-
mediate riddle or riddles and the bottom riddle a single valve in lieu of two valves
as in our previous arrangement, this single valve being so arranged 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. By the use of one valve arranged according to our present
invention the construction of the apparatus is simplified and cheapened and we
obviate throttling the wind exit of the blower such as may result with the two
valve arrangement if both be inadvertently closed at the same time.
Dated this 20th day of February 1895.
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 & 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 :-
According to this invention, which is an improvement on that for which Letters
Patent No. 7937 of 1890 were obtained by us, we provide in connection with
or cases to the space
the passages for conducting air from the blower case
between the top riddle and the inclined board below it and to the space between
the intermediate riddle or riddles and the bottom riddle, a single valve in lieu
of two valves as in our previous arrangement, this single valve being so arranged
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

page_text: 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. By the use of one valve arranged according
to our present invention the construction of the apparatus is simplified and
cheapened and we obviate the complete throttling of the wind-exit of the blower
that may result with the two-valve arrangement by inadvertently closing both of
the valves at the same time.
The accompanying drawing shows partly in side elevation, and partly in vertical
section, so much of a thrashing and winnowing machine as is necessary to illustrate
the application of this invention thereto.
1 is the top riddle, 2 an inclined board arranged below the same, 3 an inter-
mediate riddle arranged below the inclined board, 4 a bottom riddle, and 5 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 1 and the inclined board 2 below it, and to the
space 10 between the intermediate riddle 3 and the bottom riddle 4. These parts
are constructed and arranged substantially in the same manner as the correspondingly
numbered and named parts in our said former Specification.
11 is a flap valve hinged or pivoted at 12 so as to control both the passage 7
and the passage 8.
To the outer end of its spindle, at a point outside the casing
forming the two passages, is fixed a handle 13 which may, as shown, be in the
form of an arm having at its outer end a slot 14 constituting an arc of a circle
struck from the axis of the pivot. Through the slot there 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 can be fixed in position so as to close the inner
end of the passage 7, in which case the whole of the blast will be delivered
through the passage 8, or to close the inner end of the passage 8, in which case the
whole of the blast will be delivered through the passage 7, or as shown, to occupy
an intermediate position between the inner ends of the two passages, in which case
the blast will be delivered partly through each of the two passages.
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.
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 bereinabove described improvement in apparatus of the kind forming the
subject of our previous Patent No. 7937 of the year 1890 whereby a single valve
is made to serve for controlling the passages 7 and 8 forming communications
between the blower case or cases and the space between the top riddle 1 and the
board 2 and the space or spaces between the intermediate riddle 3 or intermediate
riddles and the bottom riddle 4, the said single valve being so arranged that it can
be caused to close either the passage 7 or the passage S, but not both of them
simultaneously, and that it can be made to assume a position in which it will enable
the blast to be directed partly into one of the said passages and partly into the
other, as set forth.
Dated this 31st day of October 1895.
ALFRED SHUTTLEWORTH.
For the Applicants,
W. Lloyd Wise,
.46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.