Year: 1886

page_text: I JAMES MARSHALL of the Britannia Iron Works Gainsborough in the County
of Lincoln Engineer do hereby declare the nature of this Invention to be as
follows:-
My Invention relates to thrashing machines with which apparatus is combined
to cut and bruise the straw as it leaves the straw shakers. Such machines and
apparatus as hitherto arranged, or combined, and whether with single or double
cutting or bruising rollers have been arranged for the rollers to revolve so as to
deliver the cut straw onto a special sifting apparatus attached to the end of and
outside the thrashing machine.
According to my Invention I dispense with this separate sifting apparatus and
I apply a roller or rollers to cut and bruise the straw as it leaves the straw
shakers the said roller or rollers being so rotated that instead of the straw being
delivered onto a separate sifting machine it passes from the roller or rollers back
within the frame of the thrashing machine and is delivered onto the caving riddle
of the dressing shoe or onto a prolongation thereof provided with riddling surfaces
to separate from the straw any grains which may have mingled therewith, which
grains may either be led into the bottom hopper of the machine to the other grain
or may be passed from underneath the prolongation riddle out of the machine
separately. The usual thrashing machine blower or a special blower or winnower
can be arranged to act on the aforesaid prolongation riddle.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London,
Agent for the said James Marshall,

page_text: I JAMES MARSHALL of the 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 :-
My Invention relates to thrashing machines with which apparatus is combined
to cut and bruise the straw as it leaves the straw shakers such machines and
apparatus as hitherto arranged or combined whether with single or double cutting
and bruising rollers have been arranged for the rollers to revolve so as to deliver
the cut straw on to a special sifting apparatus attached to the end of and outside
the thrashing machine."
According to my Invention I dispense with the separate sifting apparatus and
I apply a roller or rollers to cut and bruise the straw as it leaves the straw
shakers but so rotated that instead of the straw being delivered on to a separate
sifting machine it passes from the roller or rollers back within the frame of the
thrashing machine on to the caving riddle of the dressing shoe, or on to a pro-
longation thereof forming a part of such dressing shoe, and provided with riddling
surfaces to separate from the straw any grains which may have intermingled
therewith.
The usual thrashing machine blower or a special blower, winnower or fan can
be arranged to act below this prolongation riddle, on to a second riddle fixed under
the same. Any grain coming from the bruised straw may either be led into the
bottom hopper of the machine to the other grain or may be passed from under-
neath the prolongation riddle out of the machine separately by the action of the
special blower, winnower or fan previously referred to.
The bottom part of the one roller in the case of one roller being used, or the
bottom part of the second or lower roller in the case of two rollers being used
rotates towards the thrashing drum for the purpose of delivering the straw within
the machine as previously described.
The accompanying drawing represents in side view so much of a thrashing
machine as is necessary to illustrate this Invention shewing an arrangement wherein
a special blower is employed to act below the prolongation riddle but it will be
understood that there may be a conducting channel for the blast from the main
blower or fan if desired.
Referring to the drawing A is the cutting and bruising roller which rotates in
such a direction that it delivers the cut and bruised straw on to the prolongation
of the dressing shoe and riddle (respectively marked D and E). F is a second
riddle under the riddle E and G is the special blower, winnower or fan acting upon
this second riddle F. The said riddle F may be dispensed with but I prefer in most
cases to use it.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
First In thrashing machines a roller or rollers arranged to cut and bruise the
straw as it leaves the straw shakers and so rotated that the straw is delivered
thereby back to within the machine substantially as herein before described.

page_text: Second: In thrashing machines a prolongation of the caving riddle in connection
with the dressing shoe in combination with means for cutting and bruising the
straw as it leaves the straw shakers and delivering it onto the said prolongation
substantially as herein before described.
Third: In thrashing machines means for cutting and bruising the straw as it
leaves the straw shakers and returning it to within the machine onto a prolonga-
tion of the caving riddle there being beneath this prolongation a second riddle
acted upon by a special blower winnower or fan or by the main blower or fan
substantially as hereinbefore described.