Improvements in Threshing Machines.
Year: 1889

page_text: Date of Application, 29th June, 1889-Accepted, 3rd Aug., 1889
Improvements in Threshing Machines.
A communication from abroad by FRIEDERICH RICHTER, of Rathenow, CHRISTIAN
RICHTER, of Brandenburg on the Havel, and OTTO RICHTER, of Bismark,' all
in the Empire of Germany, Machine Manufacturers.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323, High Holborn in the County of Middlesex, Civil
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 use of the ordinary threshing machines is attended with many inconveniences
which arise from the mode of construction of the beaters at present in use. d
very frequent occurrence, especially when threshing damp wheat, is the wrapping
of the straw round the threshing drum, thereby not only rendering the working
of the machine heavier but also crushing the straw, and thus reducing its value.
Another evil when using the usual beaters is, that small ears, so called "dwarf
ears are frequently not threshed out and thus a loss of grain takes place.
These evils are avoided by the use of the new beaters forming the object of
this invention.
"
In the drawings:
Figures 1 and 2 are a vertical and transverse section respectively of a drum
fitted with the new beaters.
Figure is a view in perspective of part of the beater, and
Figure 4a section through the ledges of this beater.
If the corn be fed to the threshing drum F through the spout A, one of the
beaters, for instance (, catches a certain portion of it and carries it along with it.
The curved part a of the beater prevents the wrapping of the straw round the
under surface of the beater, for the straw projecting from the spout A is caused
by the said projecting portion to take an oblique forward direction and is thus
prevented from dragging under the beater. This construction prevents the straw
being carried round and round and so not only deleteriously bruised, but also the
working of the machine impeded and even stopped.
A further important advantage of this arrangement of beaters consists in this,
that the straw caught by a beater is more speedily carried with it from the feed
spout A to the outlet D and not ejected from the machine backwards through
successive strokes of the beaters as in some of the machines in use at present.
Owing to the straw being caught by only one beater and quickly carried through the
machine, it is not bruised in numerous places but passes through the case of the
thresher smooth and unbruised, yielding thus a smoother and consequently more
valuable straw than is obtained by the usual type of machines.
Further, the blow which the ears receive is naturally stronger in the long con-
tinuous operation than is the case when the straw is drawn through the same space
intermittently, and hence a considerably greater yield is obtained with a smaller
expenditure of power.
The straw is caught by the edge b of the beater, so that a complete and even blow
is given to it and small ears cannot hide themselves during the stroke between the
ridges d and so pass out unthreshed from the machine. This action is increased by
the straight edge c of the teeth d which merges into an oblique edge e. In conse
quence of this arrangement the position of the ears is so changed that even the
smallest ears are caught with certainty by the teeth d and completely threshed
out.

page_text: The arrangement of the smooth edge c, of the oblique edge e, and of the shortened
oblique gripping teeth d has therefore a particular object and attains in practice a very
important result, namely, an increased yield when threshing.
As explained above, the straw caught by each beater, is carried through the machine
at a rapid pace, and thus no unnecessary accumulation of straw takes place contracting
the space between the outer casing E and the drum F, and acting as a brake or even
bringing the threshing drum to a standstill. The distance of the beaters from the
outer case can be made greater than is done at present, and as the straw is not so
compressed between case and drum as it necessarily is when using the ordinary
beaters, it does not require for its passage through the machine so much motive power
as in the former machines.
The following are some of the advantages of the use of this beater :—
1. The prevention of the straw wrapping round the drum of the machine, thereby
insuring an easier driving of the machine.
2. The production of smoother and therefore more valuable straw than before.
3. Perfect threshing out of the corn.
4. Smaller expenditure of power required with an increased yield from the
machine.
.
Having now particularly described and ascertained the nature of the said. inven-
tion and in what manner the saine is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is
:-
In a threshing machine, a beater having a curved projection a on its front edge, the
operating surface of the beater being provided with a straight smooth portion c and
an inwardly inclined smooth portion e, and having also the usual oblique teeth d behind
the said inclined portion e, substantially as and for the purposes set forth.
LAAY
WM. P. THOMPSON & Co.,
Agents for the Applicant.
WM. P. THOMPSON & Co.,
Agents for the Applicant.