Year: 1887

page_text: Date of Application, 1st Feb., 1887
Complete Left. 1st Nov., 1887
Complete Accepted. 1st May, 1888
I ALFRED WILLIAM MANTLE Engineer of 52 Queen Victoria Street in the City
of London do hereby declare the nature of this invention to be as follows:-
My invention has for its object to provide thrashing machines and more especialy
those which have a flat straw shaker or grid such as is shown in the drawings
accompanying the Specification of Letters Patent granted to me dated March 31st
1882 No. 1653.
The invention consists in the employment of boards to the number of five more or
less which are mounted edgewise and move in longitudal slots in the straw shaker or
grid so as to first rise above the level of the straw shaker or grid and beat the
straw from underneath and then to descend below the level of the straw shaker or
grid in order to give the straw operated on a momentary rest and by the rising
and falling movement imparted to these boards which I will term straw beaters the
loose corn is separated effectualy from the straw after it leaves the drum.
These alternate rising and falling movements of the straw beaters can be worked
in unison with the straw shaker or grid attached to the shog board or riddles which
reciprocate in which case the straw receives a combined sifting and beating motion
or if desirable the straw shaker or grid may be fixed in any suitable manner to the
sides of the machine in which case the straw would only receive a beating motion
from underneath.
The straw beaters can be actuated by any suitable mechanism and according to one
arrangement which I have designed for the purpose they are connected at or near
their ends by means of brackets to cross beams of iron or wood. The cross beam
connecting the upper or delivery ends of straw beaters is suspended by means of a
A shaped spring hanger one end of said hanger being attached to the frame of straw
shaker or grid the other end to cross beam. At the lower or drum ends of the
straw beaters is a similar hanger one end of said hanger is fixed to the frame of
the machine the other end to the caving riddles while the cross beam carrying the
straw beaters is fixed by suitable means on top of the A hanger.
The caving riddles and straw beaters being thus connected the reciprocating
movement of the caving riddles alternately diminishes and increases the inclination

page_text: of the hangers and causes the cross beams with the straw beaters attached to move
upwards and forwards equaly throughout the entire length of the straw beaters this
motion imparted to the straw resembles that which it would receive if tossed by a
person using a large barn fork.
The raising and lowering movement of the straw beaters can obviously be effected
in other ways and if thought desirable the several beaters can be moved at different
times but I prefer that they shall all rise and fall together. In conjunction with the
straw shaking arrangement above described I think it desirable to fit the drum with
an improved delivery board which I make in the form of a part of a circle and which
is arranged in such a manner as to prevent loose grains of corn from being thrown too
far up the shaker this arrangement can also be applied to machines fitted with the
ordinary shaker.
A further improvement which I have effected in blast elevators used in thrashing
machines has for its object to prevent the grain from being split or crushed and for
this purpose I construct in addition to and outside the usual casing a chamber through
which by means of the blast the grain can be passed at option without coming in
contact with the vanes or scoops.
Dated this 31st day of January 1887.

page_text: COMPLETE SPECIFICATION.
Improvements in Thrashing Machines.
I ALFRED WILLIAM MANTLE Engineer of 52 Queen Victoria Street in the City of
London 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 has for its object to provide Thrashing Machines and more especialy
those which have a flat shaker or grid such as is shown in the drawings accompanying
the Specification of Letters Patent granted to me dated March 31st 1882 No. 1653.
My Invention consists in the employment of boards to the number of five (more
or less can be used if desirable) which are mounted edgewise and move in longi-
tudal slots in the straw shaker or grid so as to first rise above the level of the
straw shaker or grid and beat the straw from underneath and then to descend below
the level of the straw shaker or grid thus giving the straw operated on a momentary
rest before the beater is again moved upward by the mechanism hereafter described.
By the rising and falling movements imparted to these boards which I will term
straw beaters the loose corn is effectualy separated from the straw after it leaves
the drum. The alternate rising and falling movements of the straw beaters can be
worked in unison with the straw shaker or grid attached to the riddles or shog
board which reciprocate in opposite directions in this case the straw operated on
would receive both a sifting and a beating motion or the straw shaker or grid may
be fixed in any suitable manner to the sides of the machine in which case a beating
motion from underneath only is imparted to the straw operated on.
The straw beaters can be worked by any suitable mechanism and according to one
arrangement which I have designed for the purpose they are connected at or near
their ends by means of bracketts to cross beams of iron or wood in the accompanying
drawings a piece of gas tube is shown. The cross beam connecting the upper or
delivery ends of straw beaters is suspended by means of spring hangers of shape
one end of said hanger is attached to the frame of straw shaker or grid the other
to the cross beam carrying straw beaters it must be understood that aforesaid 'hangers
are attached to each end of cross beams and that all the hangers are put preferably
outside the match boarding of the machine. At the lower or drum ends of the
straw beaters is a similar shaped hanger to that above described one end of this
hanger is fixed to the frame of the machine or other suitable position the other end
to the caving riddles or shog board (preferably the former) this constitutes the
connecting rod or driver while the cross beam carrying straw beaters is attached
by any suitable means on the top or ridge of said A hangers the straw beaters
being thus connected to either riddles or shog board the reciprocating movement
imparted to riddles or shog board (by means of a crank or other suitable arrangement)
alternately increases and diminishes the inclination of the A shaped hangers and
causes the cross beams with the straw beaters attached to move upwards and forwards
beating the straw from underneath and pushing it at same time to the delivery end

page_text: of machine. It will be seen from the accompanying drawings that the upward and
forward motion before described is imparted to the hangers in opposite directions
the movement of the lower or drum end forming the arc of a circle thus (while
that of the front or delivery end is) this peculiar motion causes the straw beaters
to rise and fall equaly throughout their entire length and operates on the straw in
the same manner as if it were tossed by a person using a large barn fork. The
rising and falling movements of the straw beaters can obviously be effected in other
ways and if thought desirable the several beaters can be moved at different times
but I prefer that they shall all rise and fall together. In conjunction with the
straw shaking arrangement above described I think it desirable to fit an improved
delivery board which forms part of a circle and is arranged in such a manner to
prevent the grain from being thrown too far up the shaker and also the straw from
winding round the drum after it has passed through but it must be understood that
this board is not inseparable from the above system and further it can be fitted to
machines with ordinary shakers.
A further improvement which I have effected in blast elevators as used in thrashing
machines has for its object to prevent the grain from being split up or crushed and for
this purpose I construct in addition to and outside the usual casing a chamber through
which by means of the blast the grain can be passed at option (by taking out or
inserting a plate) without coming in contact with the vanes or scoops the aforesaid
blast is also used to remove dust and other impurities by means of a receiving chamber
fitted with suitable baffling boards which allow the blast to escape with whitecoats
dust &c. but arrest the grain and conduct it to a hopper leading to the second dressing
apparatus thus the grain is subjected to three separate dressings.
In order that my invention be fully understood I refer to the accompanying drawings
which illustrate the longitudal section of a machine A is the drum B is the concave
Cdelivery board D straw beaters E grid or shaker F shog board G 1st riddle H crank
shaft I and I¹ the connecting rods J blast elevator J¹ the delivery chamber to be used
when the grain is liable to split K receiving chamber K' dust spout L baffling plates
M is the second dressing apparatus.
The cross sections under longitudal drawings illustrate straw shaking apparatus and
blast elevator D is the straw beaters E straw shaker or grid F¹ cross beam J elevator
J delivery chamber J" adjustable plate. The A hangers are shown by the dotted
lines A¹ and A" is attached to the lower or drum ends of straw beaters A" representing
the connecting rod attached to caving riddles B₁ being the A hanger carrying front
ends of straw beaters the aforesaid dotted lines are on longitudal drawing.
Having now particularly described and set forth the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is
1st. In thrashing machines Straw Beaters moving in longitudal slots in the Straw
Shaker or Grid used either in unison with the Shogboard or the Riddles or fixed to
the sides of the machine in combination with the A shaped hangers connecting cross
beams and motions described and set forth.
2nd. The improved delivery board marked in the accompanying drawings.
3rd. The delivery chamber baffle plates and apparatus to prevent the grain operated
on from being crushed or split and to further purify the grain operated on all
substantially as herein described and set forth.
Dated this First day of November 1987