Improved Beater Bar for Thrashing Machines.
Year: 1890

page_text: Date of Application, 18th Dec., 1890
Complete Specification Left, 21st July, 1891--4ccepted. 19th Sept.. 1891
PROVISIONAL SPECIFICATION.
Improved Beater Bar for Thrashing Machines.
I, THOMAS BROWN, of Regent Works, Sheffield, in the County of York, Steel
Manufacturer, do hereby declare the nature of this invention to be as follows
:-
Beater bars for thrashing machines have hitherto been made with teeth or ribs
placed in a diagonal or oblique position thereon, and consequently two patterns of
bars require to be made having the teeth or ribs inclined respectively to the
right and to the left hand, in order to match each other. With this construction
it is a matter of some difficulty to make the beater drum to run perfectly true,
owing to differences in the weight of the two patterns of bars According to my
present invention I both simplify the manufacture of beater bars and obviate the
last named difficulty, by making the beater bars with teeth having a double incline
or V shape, so that as each bar is thus provided with teeth having both right and
left handed acting surfaces, only one pattern of bar will be required, and
consequently as all bars will be of the same weight, the above named difficulty will
be avoided.
The above described improved beater bar may either be rolled in mild steel or
it may be made of cast steel or malleable cast iron.
Dated this 18th day of December 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Beater Bar for Thrashing Machines.
1, THOMAS BROWN, of Regent Works, Sheffield in the County of York, Steel
Manufacturer 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:-
Beater bars for thrashing machines have hitherto been made with teeth or ribs
placed in a diagonal or oblique position thereon, and consequently two patterns of
bars require to be made having the teeth or ribs inclined respectively to the right
and to the left hand, in order to match each other. With this construction it is a
matter of some difficulty to make the beater drum to run perfectly true, owing to
differences in the weight of the two patterns of bars. According to my present
invention, I both simplify the manufacture of beater bars and obviate the last named
difficulty by making the beater bars with teeth having a double incline or V shape
so that as cach bar is thus provided with teeth having both right and left handed
acting surfaces, only one pattern of bar will be required, and consequently
as all bars will be of the same weight, the above named difficulty will be avoided.
The above described improved beater bar may either be rolled in mild steel or it
may be made of cast steel or malleable cast iron.
The accompanying drawings shew several different patterns of beater bars made
with double inclines according to the present invention.
Fig. 1 is a transverse section and Fig. 2 is a longitudinal section on the line X X
of Fig. 3 which is a plan of part of a beater bar made with the double inclines
meeting in the middle so as to form Vs. Fig. 4 is a transverse section and Fig. 5
a plan in which each of the inclined ribs is of arch form having its greatest
prominence between the middle and edge of the bar. Fig. 6 is the plan of a beater
[Price 6d.]

page_text: bar having inclined ribs similar to those in Figs. 4 and 5 but not facing each other,
the ribs on the one side facing the spaces between the ribs on the other side.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I claim :-
A beater bar for a thrashing machine having its projecting ribs or teeth made in
two portions inclined in opposite directions, substantially as and for the purpose
set' forth.
•
ABEL & IMRAY,
Agents for the Applicant.