Year: 1887

page_text: Date of Application, 10th Dec., 1887
Complete Specification Left, 10th Oct., 1888
Complete Specification Accepted, 16th Nov., 188
I JAMES MARSHALL of the firm of Marshall Sons and Company Limited of
Britannia Iron Works Gainsborough in the County of Lincoln Engineers do hereby
declare the nature of this Invention to be as follows:-
This Invention relates to thrashing machines and has for its object to improve the
construction and operation thereof.
According to this Invention the shaker boxes and the dressing shoes are operated
from one crank shaft. I will explain the Invention as applied to a machine having
five shaker boxes and two principal shoes beneath (in addition to the supplementary
shoe or riddle hereinafter described).
The driving crank shaft has four cranks operating connecting rods the two outside
connecting rods are attached at the drum end of the machine to the upper shoe
and at the forward end to the two outside shaker boxes the drum end of these
two shaker boxes being fastened to the upper side of these connecting rods. The
centre shaker box is supported and worked by a tubular bar at each end extending
from the outside shaker boxes. The two inside connecting rods are attached at the
drum end of the machine to the lower dressing shoe and at the forward end of
the rods to the second and fourth shaker boxes the drum end of these two boxes
being also supported by the connecting rods. The lower shoe is connected by a
rigid connection with the supplementary shoe. The shoes and blower are brought
up close under the shaker boxes in a much higher position than hitherto so as
to enable the cavings and chaff to be delivered at a higher level than hitherto.
Where bruising and cutting rollers are employed they are mounted one at a higher
level than or above the other and are caused to rotate in opposite directions, the upper
one at its top portion moving in a direction towards the thrashing drum and
receiving the straw from the shaker boxes and the lower one at its top moving in
a direction away from the thrashing drum and receiving the straw from the upper
roller and also the cavings and chaff from the caping riddle of the lower dressing
shoe. The shoes and blower are in an elevated position as aforesaid to admit of this.

page_text: The straw cavings and chaff after passing through the lower roller are delivered on to
the aforesaid supplementary dressing shoe to which a blower is applied. The lower
dressing shoe above the said supplementary shoe has a passage through it which can
be covered or uncovered, and a guide below it so that the cavings and chaff may it'
desired be delivered on to the supplementary shoe without passing through the lower
roller.
I JAMES MARSHALL of the firm of Marshall Sons & Company Limited of Britannia
Ironworks Gainsborough in the County of Lincoln Engineers do hereby declare the
nature of the said Invention and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement :-
This Invention relates to thrashing machines and has for its object to improve the
construction and operation thereof.
According to this Invention the shaker boxes and the dressing shoes are operated
from one crank shaft and the shoes and blower are arranged higher and closer to the
shaker boxes than hitherto so as to deliver the chaff and cavings at a higher level. I will
describe the Invention with reference to the accompanying drawings as applied to a
machine having five shaker boxes and two principal shoes beneath (in addition to the
supplementary shoe or riddle hereinafter described) premising that I do not restrict
myself to any particular number of shaker boxes and shoes nor to the details of
construction illustrated on the drawings.
Figure 1 of the drawings is a longitudinal vertical section of a thrashing machine
constructed according to my invention and Figure 2 is a plan of the shaker boxes and
the connecting rods by which they are attached to the shoes. The driving crank
shaft A has four cranks B, B1, B2, B3 operating connecting rods C, C, C2, C³. The
two outside connecting rods C, C³ are attached at the drum end of the machine to the
upper shoe D and at the forward end to the two outside shaker boxes E, E³, the drum
end of these two shaker boxes being fastened to the upper side of the connecting
rods C, C³ The centre shaker box E³ is supported and worked by tubular bars G, G
one at each end extending from the two outside shaker boxes. The two inside
connecting rods C, C are attached at the drum end of the machine to the lower
dressing shoe D2 and the forward end of the rods are connected to the shaker

page_text: boxes E', E2, the drum end of these two boxes being also supported by the connecting
rods C¹ and C² as shewn at e. The lower shoe D is connected by a rigid connection d
with the supplementary shoe D³. The shoes D. D2 and blower F are arranged close
under the shaker boxes in a much higher position than hitherto so as to enable
the cavings and chaff to be delivered at a higher level than hitherto-Where
bruising and cutting rollers are employed they are mounted the one at a higher
lever than, or above the other as shewn at H, H and are caused to rotate in
opposite directions as indicated by arrows, the upper one H at its top portion moving
in a direction towards the thrashing druin and receiving the straw from the shaker
boxes and the top portion of the lower one H² moving in a direction away from the
thrashing drum and receiving the straw from the upper roller H and also the cavings
and chaff blown from the caving riddle of the lower dressing shoe D² by the
blower F the elevated position of the shoes and blower as herein before described
admitting of this.
The straw cavings and chaff after passing beneath the lower
roller are delivered on to the supplementary dressing shoe D³ to which a blower F²
is applied. The lower dressing shoe D² above the supplementary shoe has a passage
through it which passage can be covered or uncovered when desired by the board gl.
g is a guide attached to the board g¹ which when the board is in place over the
passage serves to guide the bruised straw passing from the roller H2 onto the
supplementary shoe D. When the board g¹ is removed from the passage g
the cavings
and chaff will be delivered therethrough, onto the supplementary shoe without passing
through the lower roller H².
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 thrashing machines operating the shaker boxes and the dressing shoes from
one and the same crank shaft substantially as hereinbefore described with reference
to the accompanying drawings.
2. In thrashing machines the combination with shaker boxes and dressing shoes
of the bruising and cutting rollers II H2 and blowers F F the dressing shoe D'
having an opening therein through which the cavings and chaff may be caused to
pass onto the supplementary dressing shoe D3 without first passing through the
bruising roller substantially as hereinbefore described with reference to the
accompanying drawings and whether used in combination with the subject matter
of the first claiming clause or not.
3. The general combination and arrangement of parts constituting the improvements
in thrashing machines as a whole substantially as hereinbefore described and illustrated
in the accompanying drawings.
Linted this 10th don of Oatahan 1000