IMPROVEMENTS IN BEATERS FOR THRASHING MACHINES
Year: 1884

page_text: I, CHARLES WOOLNOUGH of Henham in the County of Suffolk, Engineer do
hereby declare the nature of said invention for "IMPROVEMENTS IN BEATERS FOR
THRASHING MACHINES" to be as follows :-
"
I
The object of my invention is to construct beaters for thrashing machines'
which are simple in construction, efficient in action, and most easy of adjustment.
Heretofore the beaters of thrashing machines have generally been made of plates¹
of metal with grooves, channels or serrations on their working surfaces and some-
times two of such plates have been put opposite to one another or back to back ;
now according to my' Invention I make the beaters continuous all round on the
working surface or surfaces.
וי
The base or inner diameter of the working surfaces of these beaters may be of
any approved shape or form in section which would vary according to the shape,
of the working surfaces thus the base may be curved or polygonal.
Beaters constructed in this way are fitted into recesses in the drum heads to
take the strain off the bolts which hold the sections together. These bolts extend
from end to end of the drum or concave and are secured by nuts. When it is.
required to renew the working surface of the beaters the nuts are loosened and the
beaters turned the required distance the nuts are then tightened up. and the
machine is ready to work again. In this way the working surface of the beater
may be changed without removing the drum from the machine which is of great
importance where skilled labour is not available. These continuous beaters are
also fitted to the concaves as well as to the drum.
I
2

page_text: I, CHARLES WOOLNOUGH of Henham in the County of 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 object of my invention is to construct beaters for thrashing machines which
are simple in construction, efficient in action and most easy of adjustment.
Heretofore the beaters of thrashing machines have generally been made of plates
of metal with grooves, channels or serrations on their working surfaces and some-
times two of such plates have been put opposite to one another or back to back, now
according to my Invention I make the beaters continuous all round on the working
surface or surfaces all as hereafter described.
The base or inner diameter of the working surfaces of these beaters may be of
any approved shape or form in section which would vary according to the shape
of the working surfaces, thus the base may be curved circular or polygonal.
Beaters constructed in this way are fitted into recesses in the drum heads and
concaves whereby the strain is taken off the bolts which hold the sections together.
These bolts extend from end to end of the drum or concave and are secured by
nuts. When it is required to renew the working surface of the beaters the nuts
are loosened and the beaters turned the required distance the nuts are then
tightened up and the machine is ready to work again. In this way the working
surfaces of the beater may be changed without removing the drum from the
machine, which is of great importance where skilled labour is not. available.
These continuous beaters are also fitted to the concaves as well as to the drum...
The accompanying drawings illustrate the manner in which I carry my invention
into effect. Figure 1 is a perspective view of a beater drum detached constructed
according to my Invention. Figure 2 shows in half end view and in half cross
section a. beater drum and a concave and Figure 3 is a view partly in elevation
and partly in longitudinal vertical section of the beater drum.
A is the continuous beater, at top in Figures 2 and 3 the inner diameter of the
working surfaces is shewn circular in section and at the other end or bottom the
inner diameter as shewn polygonal.
This continuous beater is preferably cast in one piece and hollow as shewn,
having the working surfaces on the circumference all round same.
B, B are the drum-heads; C,.C are the recesses in same which may be made as
shewn at the top or bottom end of Figure 3 the top end shewing them fitted with
the beater abutting against the web of the head and at the lower the beater ends
enter recesses.
D, D are the bolts extending through and from end to end of the beaters;
E, E are the nuts on the drum heads for tightening up the bolts and for securely
holding the whole structure in position. To renew the working surface loosen the
nuts E, the beaters A, A, can then be turned so as to change the working surface
thereof when required and on screwing up the nuts E, E, the bolts D, D, are
tightened and the beaters A A again secured in position and this can be easily donę

page_text: without removing the drum from the machine. I have shewn two drum heads but
any number may be used according to the length of the beater. Clips may if
required be fitted to the top ends of the drum heads to renew the wearing surfaces
such a clip is shewn at K on one of the beaters at Figure 2.
am
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 I
aware that it has heretofore been proposed to make beaters for thrashing
machines of a screw like form having inclined threads or projections round same,
I make no claim to such circular screw threaded beaters when taken alone or
separately but what I claim is
In thrashing machines the employment of drums and concaves fitted with hollow
beaters having continuous working surfaces round the circumference thereof the
inner diameter of such surfaces having a polygonal or circular shape together with
the bolts extending from end to end and running through the beaters and the
means employed of fitting same in sections and adjusting such beaters in the drum
and concave whereby the working surfaces of the beaters or the drums or concaves
may be rotated when required as they become worn all substantially as set forth.
Dated thin 10th daw of Cantemben 100K
BREWER & JENSEN,
For the Applicant.