Improvements in Thrashing Machines.
Year: 1891

page_text: Date of Application, 7th Feb., 1891
Complete Specification Left, 6th Nov., 1891-Accepted, 12th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in Thrashing Machines.
I, FRANK NEEDLEY, Manager of Thrashing Machine Department to Messrs.
Ruston, Proctor & Co. Ld., of Sheaf Iron Works, in the City and County of
Lincoln, do hereby declare the nature of this invention to be as follows:
In thrashing machines now fitted with straw choppers and bruisers the beater or
peg drum by which the straw is bruised and broken is ordinarily formed of a
cylinder of wrought iron plate with pegs projecting outwards from its circumference
through slots in the drum barrel and secured thereto by bolts. With this con-
struction if any of the pegs get broken it is necessary to take the drum out from
the machine before they can be renewed.
According to my invention I construct the peg bruising drum of straw thrashing
machines of a number of discs fixed at distances apart from one another on a shaft
and with spiral bars carrying pegs bolted to the discs from the exterior and in
addition I close in the spaces between the spiral bars with filling plates so as with
the bars to form a complete drum. In this way if the pegs on any bar get damaged
they can readily be renewed without interfering with the rest of the drum. Usually
the straw before being acted on by the peg drum is cut into lengths by the action
upon
it of a drum having knives projecting from its circumference the knives being
similarly fixed to the drums interior.
In order to be enabled to replace any of the knives without taking the drum out
from the machine I make each ring of plate forming the drum divisible longi-
tudinally into two halves which can be readily separated from one another and the
knives carried by either half removed without its being necessary to take the
machine to pieces.
Dated this 6th day of February 1801
FRANK NEEDLEY.
COMPLETE SPECIFICATION.
Improvements in Thrashing Machines.
I, FRANK NEEDLEY, Manager of Thrashing Machine Department to Messrs.
Ruston, Proctor & Co. Ld., of Sheaf Iron Works, in the City and County of
Lincoln, 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 :-
.
In thrashing machines now fitted with straw choppers and bruisers the beater or
peg drum by which the straw is bruised and broken is ordinarily formed of a
cylinder of wrought iron plate with pegs projecting outwards from its circumference
through slots in the drum barrel and secured thereto by bolts. With this con-
struction if any of the pegs get broken it is necessary to take the drum out from
the machine before they can be renewed.
According to my invention I construct the peg bruising drum of straw thrashing
machines of a number of discs fixed at distances apart from one another on a shaft
and with spiral bars carrying pegs bolted to the discs from the exterior and in
addition, I close in the spaces between the spiral bars with filling plates so as with
the bars to form a complete drum.
In this way if the pegs on any bar get damaged they can readily be renewed
without interfering with the rest of the drum. Sometimes knives are interspersed
with the pegs on the drum to better cut up the straw, but usually the straw before

page_text: being acted on by the peg drum is cut into lengths by the action upon it of a drum
having knives projecting from its circumference. In either case I similarly fix the
knives to the drums so that they can be replaced without taking the drum out from
the machine.
Figure 1 of the drawing annexed is a side elevation of a peg drum constructed as
above described-one of the filling plates is shewn to be removed.
Figure 2 is an end elevation of the drum.
Figure 3 is a side elevation of a portion of one of the peg bars.
Figure 4 is an end view of the bar and of a portion of the drum.
Figure 5 is a side elevation and Figure 6 an view of one of the filling plates.
A A are discs or wheels fixed at distances apart from one another on a shaft B.
CC are spiral bars bolted to the circumference of the discs. DD are peg bars
held by bolts E E to the bars C. F F are filling plates filling the spaces between
the peg bars D and held to the circumference of the discs by screw bolts G. It
will be seen that by removing these cover plates any of the bolts retaining the peg
bars can be unscrewed and any peg bar removed without interfering with the other
bars or taking the drum out from the machine.
Figure 7 is a side elevation of a knife drum constructed in the same manner-in
this figure some of the cover or filling plates are removed.
Figure 8 is an end view of the drum.
Figure 9 is a side elevation and Figure 10 an end view of one of the filling
plates.
Figure 11 is a side view and Figure 12 an edge view of one of the knives on a
larger scale.
Figures 13 and 14 shew the same views of this knife together with a portion of
the drum to which it is fixed.
Figure 15 is a face view, Figure 16 a back view and Figure 17 an edge view of
one of the clamp plates by which the knives are held-to the spiral bars.
A A are discs fixed at distances apart to a shaft B. C C are spiral bars bolted
to the circumference of the discs. D D are the knives. EE are clamp plates
holding the knives to the bars C. F F are the filling plates and G the screw bolts
by which they are secured to the discs. The knives I form in the usual manner in
pairs as shewn the knives of each pair being at a distance apart and connected by a
curved base plate. The clamp plates are hollowed at the back to fit over these
bases of the knives. It will be seen that by first removing one or more of the cover
plates the bolts retaining any one or other of the knives can readily be got at and
the knife removed and replaced by another if necessary.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A peg or knife drum composed of spiral bars fixed to the circumference of
discs or wheels which are at a distance apart from one another on a shaft and of
peg bars or knives fixed to the outside of the spiral bars and of filling plates filling
the spaces between the bars substantially as described.
2. A peg drum constructed substantially as hereinbefore described and illustrated
at Figures 1 to 6.
3. A knife drum constructed substantially as hereinbefore described and illustrated
at Figures 7 to 17.