Improved Beater-drum for Threshing Machines.
Year: 1895

page_text: Date of Application, 31st May, 1895
Complete Specification Left, 27th Jan., 1896-Accepted, 29th. Feb., 1896
Improved Beater-drum for Threshing Machines.
I, OLIVER IMRAY of No. 28 Southampton Buildings in the County-of-London,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
Threshing machines as heretofore constructed are provided with drums having
beater bars or pins fixed thereon for threshing the cereals, which bars or pins form
a rigid whole with the drum.
These drums have the great disadvantage that fractures of the beater bars or
pins or other parts of the drum, as also of the grid or casing are unavoidable
whenever hard foreign matter, such as stones, pieces of wood or iron &c. enter the
machine with the cereals.
The present invention relates to an improved construction of threshing machine
drums whereby this disadvantage is entirely obviated; it consists in pivotting
loosely to the drum a number of beater arms, that are caused by the rapid rotation
of the drum to assume radial positions, but which, in coming in contact with hard
substances, give way in turning on their pivots and thus slide over the hard
object.
A farther advantage of this drum is that the elastic nature of the blows produced
by the centrifugal action can be regulated by varying the speed of the drum, so
that the machine can be adjusted to thresh not only all kinds of cereals, but also
sunflower seeds, peas, lentils and the like.
The accompanying drawing shews a threshing machine having a beater drum
constructed according to this invention; Fig. 1 shews a longitudinal section,
Fig. 2 a front view, and Fig. 3 a side view and plan of one of the beater arms, the
form of which can be variously modified.
On the drum axis are fixed dises a a a through which pass bolts bb b, and upon
these are loosely pivotted the beater arms c c c, which are held at equal distances
apart by distance rings fff. This construction of beater drum is applicable to
threshing machines of all constructions and sizes from the smallest haud machine
to the largest steam threshing machines.
Dated this 31st day of May 1895.
ABEL & IMRAY,
Agents for the Applicant.
1, OLIVER IMRAY, of No. 28, Southampton Buildings, in the County of London,
Chartered Patent Agent, 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 :-
Threshing machines as heretofore constructed are provided with drums having

page_text: beater bars or pins fixed thereon for threshing the cereals, which bars or pins form
a rigid whole with the drum.
These drums have the great disadvantage that fractures of the beater bars or
pins or other parts of the drum, as also of the grid or casing are unavoidable
whenever hard foreign matter, such as stones; pieces of wood or iron &c. enter the
machine with the cereals.
.
The present invention relates to an improved construction of threshing machine
drums whereby this disadvantage is entirely obviated; it consists in pivotting
loosely to the drum a number of beater arms, that are caused by the rapid rotation
of the drum to assume radial positions, but which, in coming,in contact with hard
substances, give way in turning on their pivots and thus slide over the hard
object.
A farther advantage of this drum is that the elastic nature of the blows produced
by the centrifugal action can be regulated by varying the speed of the drum, so
that the machine can be adjusted to thresh not only all kinds of cereals, but also
sunflower seeds, peas, lentils and the like.
The drawing accompanying my Provisional Specification shews a threshing
machine having a beater drum constructed according to this invention; Fig. 1
shews a longitudinal section. Fig. 2 a front view, and Fig. 3 a side view and plan
of one of the heater arms, the form of which can be variously modified.
On the drum axis are fixed discs a a a through which pass bolts bbb, and upon
these are loosely pivotted the beater arms c c c, which are held at equal distances
apart by distance rings fff. This construction of beater drum is applicable to
threshing machines of all constructions and sizes from the smallest hand machine
to the largest steam threshing machines.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A beater drum for threshing machines having moveable beaters that are caused
by the rapid rotation of the drum to assume radial positions so as to give elastic
blows, the strength of which is regulated by the speed of rotation, substantially as
described.
Dated this 27th dewe of T1000