A Machine for Cutting Chaff Machine.
Year: 1887

page_text: Date of Application, 9th Apr., 1887
Complete Left, 6th Jan., 1888
Complete Accepted, 9th Apr., 1888
A Machine for Cutting Chaff, the said Machine to Work either
Alone or to be and form Part of an Ordinary Thrashing
Machine.
JAMES KEEBLE 7 Chalk Lane Bury St. Edmund's Suffolk Engineer CHARLES
EDWARD MUMFORD St. Andrews Works Bury St. Edmunds Suffolk Engineer do
hereby declare the nature of this invention to be as follows:-
The Chaff Cutter is attached to the Threshing machine immediately behind the
shakers & by a simple arrangement can be worked or thrown out of work as required.
The said chaff cutter is constructed in the following manner :-that is to say: This
machine consists of a set of round, square or other shaped knives as may be suitable
either knife or sickle secured to a spindle upon which they can be adjusted for the
purpose of altering the lengths of cut by means of screws springs or collars. The
spindle to which the said knives are attached in carried upon 2 bearings at side of
the machine, the said bearings being adjustable so that the knives can be shifted towards
the finger bar when worn.
The said finger bar consists of an iron rod or pipe to which are attached clips of
iron, steel or other material corresponding in number to the knives closing round the
outer or cutting edge of the said knives & coming close against the flat edge.
A clearer bar is attached to the back side of the knives for clearing them from
cut chaff as they revolve, the said bar consists of a rod or pipe fitted with spikes
which can be adjusted by means of a screw to suit the position of the knives. At the
top of the knives is a bar slotted with stone or emery or steel or other material for
sharpening the knives as they revolve, this bar is also adjustable.
A set of rakes either revolving or driven by an eccentric or crank for the purpose
of bringing the straw to the knives.
..
A riddle underneath the revolving knives for separating the coarse from fine chaff &
for dusting the same.
The said apparatus to be made either in combination with a Thrashing Machine or
separate & alone.
Dated this Sixth day of April 1887.

page_text: COMPLETE SPECIFICATION.
z
A Machine for Cutting Chaff, the said Machine to Work either
Alone or to be and form Part of an Ordinary Thrashing
Machine.
JAMES KEEBLE 7 Chalk Lane, Bury St. Edmunds (Suffolk) Engineer CHARLES
EDWARD MUMFORD St. Andrews Works Bury St. Edmunds Suffolk 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 chaff cutter is attached to the Thrashing machine, immediately in front of the
shakers, and by a simple arrangement can be worked or thrown out of work as
required.
The said chaff cutter is constructed in the following manner, that is to say―This
machine consists of a set of round, square, or other shaped knives, A, as may be
suitable; either knife or sickle secured to a spindle, B, to which the said knives, A,
are attached and upon which they can be adjusted for the purpose of altering the
length of cut by means of screws, springs, or collars. The spindle, B, to which the
said knives, A, are attached is carried upon two bearings at side of machine.
The finger bar, C, consists of an iron rod or pipe, to which are attached clips, X, of
iron, steel, or other material, corresponding in number to the knives; and closing
round the outer or cutting edge of the said knives, and coming close against the flat
edges. Instead of separate discs upon the finger bar, C, an entire roller, X, may be
fitted grooved to touch the knives in the same manner as the discs aforesaid. The said
finger bar is carried upon two adjustable bearings, so that it can be shifted towards
the knives, A, when worn.
The adjustment of the knives is shewn in drawing No. 2. Upon the spindle B is
fixed at one end a collar M. The other end of the spindle is screwed and provided
with a nut P. The knives A and the India rubber springs K are arranged alternately
along the spindle B between the nut P and the collar M. When the nut P is screwed
up the India rubber collar springs are compressed and the distance between the knives
diminished.
Instead of the India rubber springs K spiral springs may be used if desired. The
Clips Xand India rubber springs are also arranged alternately along the finger bar C
so that the clips can be adjusted in a similar manner to the knives.
The sharpening bar E is also arranged to be adjusted in a similar manner.
A clearing bar, D, is attached to the back side of the knives, A, to clear them from
the cut chaff as they revolve.
The said bar, D, consists of a rod or pipe, fitted with teeth, or spikes, which can be
adjusted by means of a screw, to suit the position of the knives.
At the top of the knives, A, is a bar, E, slotted; of stone, emery, steel, or other

page_text: material, for sharpening the knives as they revolve when required. This bar is also
adjustable.
A set of rakes, F, either revolving, or driven by an eccentric, or crank, for the
purpose of bringing the straw to the knives is fitted when required, above the knife
barrel. A riddle, &, under the revolving knives, A, for separating the coarse chaff
from the fine, and for dusting the same, is fitted. The said apparatus to be made
either in combination with a thrashing machine, as shown in Drawing No. 1, or
separate and alone as shewn in Drawing No. 2.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim, is-
(1) The Chaff cutter, as described, combined with a thrashing machine.
(2) The Chaff cutter, as described, as a separate and distinct machine.
(3) The knives, or cutters, and the adjustment of same, as described.
Dated this 5th day of January 1888.
CHAS. EDWARD MUMFORD.
JAMES KEEBLE.