Improvements in Machines for Thrashing Grain or Rubbing Out Seed from Husks or Cobs or the like.
Year: 1897

page_text: Improvements in Machines for Thrashing Grain or Rubbing Out Seed
from Husks or Cobs or the like.
I, JAMES MARSHALL, of Britannia Iron Works, Gainsborough, in the County of
Lincoln, Engineer, do hereby declare the nature of my invention to be as
follows:-
The object of my invention is to provide a machine for thrashing grain or for
rubbing out clover or other seeds from husks or cobs the said machine having two
shoes placed one above the other, with two separate blowers, one blower acting on
the riddling surfaces of the upper shoe, and the other blower acting on the riddling
surfaces of the lower shoe. I also apply to the machine a blast elevator, placed
alongside the bottom blower, the blast creating device for this elevator being
carried by the same spindle which carries the bottom blower, this blast blower
takes the capings or unshelled cobs or husks from the shoes back again to the
rubbing drum.
I provide a rubbing drum and a rubbing cylinder made in halves. The upper
shoe has preferably two riddles above, and one below, one of the aforesaid blowers
acting on this upper shoe. The lower shoe has beneath the upper shoe a riddling
surface and a board which conducts what passes through this riddle to two other
riddles beneath. The second blower acts on this lower shoe. In the side of the
upper shoe is an opening, allowing capings or unshelled husks or cobs to go side-
ways from the caping riddle through a spout into another spout leading to the
blast elevator. Another spout leading the capings or unshelled husks or cobs.
from the caping riddle of the lower shoe also into the spout leading to the blast
elevator, the capings husks or cobs being passed by the said elevator through a
spout back into the drum above. The rubbed out seed passes over the last riddle
into an elevator which takes the seed to a rotary screen placed above the upper
shoe. The seed passes along through this screen to the other side of the machine
and drops at the outlet end of the screen on to a spout which is placed on an
incline towards the sacking spout. That which passes through the screen falls
into a spout which is on an incline towards another sack spout.
To make this machine suitable for thrashing grain, I substitute for the rubbing
shell an ordinary concave and put straw shakers above the upper shoe, placing the
rotary screen and additional dressing apparatus into the back end of the machine,
as is customary in grain thrashing machines.
1
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page_text: Improvements in Machines for Thrashing Grain or Rubbing Out Seed
from Husks or Cobs or the like.
I, JAMES MARSHALL, of Britannia Iron Works, Gainsborough, in the County of
Lincoln, 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 my invention is to provide a machine for thrashing grain or for
rubbing out clover, or other seeds, from husks, or cobs, the said machine having
two shoes, placed one above the other, with two separate blowers, one blower act-
ing on the riddling surfaces of the upper shoe and the other blower acting on the
riddling surfaces of the lower shoe. I also apply to the machine a blast elevator
placed alongside the bottom blower, the blast creating device, for this elevator
being carried by the same spindle which carries the bottom blower. This blast
-creating device takes the capings, or unshelled cobs, or husks, from the shoes back
again to the rubbing drum.
I will describe my invention more fully with reference to the accompany draw-
ings, Figures 1 and 2 being vertical sections at right angles to each other. A is
the thrashing, or rubbing, drum & B is the rubbing cylinder made in halves.
The upper shoe C, has preferably two riddles (DE) above & one (F)
below, a board e,, which conducts the seed which passes through
the riddle E onto the upper end of the riddle F, one of the aforesaid blowers (G)
acting on the material passing through this upper shoe C. The lower shoe H,
beneath the upper shoe C, has a riddling surface J, and a board j, beneath which
conducts what passes through this riddle J to two other riddles K L beneath.
The second blower M acts on the material passing through this lower shoe H. In
the caping riddle F of the upper shoe C, is an opening N allowing capings. or
unshelled husks, or cobs, to pass from the caping riddle F, through the said open-
ing N onto the board O and from thence to the riddling surface J of the lower
shoe H.
The cobs or unshelled husks then pass over the adjustable board at the end of
the riddle J onto the leading down board j and thence to the riddle K over which
they pass into the spouts Q and P leading to the blast elevator R, which forces
them through a spout S back into B to be again acted on by the drum A.
The rubbed out seed passes over the lowest riddle L in the shoe H into an
elevator T which conveys the seed to one end of a rotary screen V placed trans-
versely above the upper shoe C. The seed passes along through this screen V to
the other side of the machine and drops at the outlet end of the screen into a
spout W which is inclined downwards towards the sacking spout X. That which
passes through the screen V falls into a spout Y which is inclined downwards
towards another sack spout Z. To make this machine suitable for thrashing
grain I substitute for the rubbing cylinder B an ordinary concave and I arrange
straw shakers above the upper shoe C, placing the rotary screen and additional
dressing apparatus in the back end of the machine as is customary in grain thrash-
ing machines.
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:
1. In machines for the purposes mentioned two shoes placed one above the
other with separate blowers one acting on the riddling surfaces. of the upper shoe.

page_text: and the other acting on the riddling surfaces of the lower shoe substantially as
hereinbefore described.
2. In machines for rubbing out husks or cobs provided with two shoes and their
riddling surfaces and two blowers as described and claimed a blast elevator
arranged alongside the lower blower and having a blast creating device carried
by the spindle which carries the said lower blower substantially as and for the
purpose hereinbefore described.
3. A machine for thrashing grain or rubbing out seed from husks or cobs or
the like the said machine being constructed substantially as hereinbefore described
and illustrated in the accompanying drawings.
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JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.