Improvements in the Means for Actuating the Shakers of Thrashing Machines.
Year: 1889

page_text: Date of Application, 11th Mar., 1889
Complete Specification Left, 7th Nov., 1889-Accepted, 7th Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Means for Actuating the Shakers of Thrashing
Machines.
JOHN RICHARDSON, Engineer South Park, Lincoln and SAMUEL QUIPP, Engineers
Foreman 38 Park Street Lincoln do hereby declare the nature of this invention to
be as follows:-
Shakers of Thrashing Machines have been hitherto made of a series of latticed
frames one end of which has been supported or hung to a fixed point the other ends
of which have been attached to the throws of cranks by the revolution of which
an up and down and forward motion is given to the shakers; the throws of the
cranks being opposite to each other thus giving the most violent motion.
Another way has been to support both ends of the shakers upon cranks, letting
one crank drive the other through the shakers, using these latter as connecting rods
but this system compels the throws to be at right angles to each other therefore the
motion is not so violent & the shaking is less perfect.
The improvements we propose consist in mounting one end upon crank with the
throws opposite to each other as in a single crank shaker and supporting the other
end upon a bar which has rocking levers keyed upon it, the rocking levers being
horizontal and having short vertical connecting rods supporting the ends of the
shakers. This rocking bar has a lever connected to an eccentric keyed on to the
main shaker crank which eccentric gives an up and down motion to the levers upon
the rocking bar. By this means we get any required up and down shaking motion
at the inner end of the shaker the whole of which is easily produced by the one
shaker crank.
Further we mount the eccentric on the shaking crank in such a manner that its
throw is easily adjusted from zero to any required amount and thus the cranks can be
adjusted to give any amount of shaking motion of the shakers so as to suit different
varieties of grain.
حيم
1 1300
JOHN RICHARDSON.
S. QUIPP.
COMPLETE SPECIFICATION.
Improvements in the Means for Actuating the Shakers of Thrashing
Machines.
JOHN RICHARDSON, Engineer, South Park, Lincoln, and SAMUEL QUIPP, Engineer's
Foreman, 38, Park Street, 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:-
Shakers of Thrashing Machines have been hitherto made of a series of lattice
frames one end of which has been supported or hung to a fixed point, the other
ends of which have been attached to the throws of cranks by the revolution of
which an up and down and forward motion is given to the shakers, the throws of
the cranks being opposite to each other, thus giving the most violent motion.
Another way has been to support both ends of the shakers upon cranks, letting
one crank drive. the other through the shakers, using these latter as connecting rods ;
but this system compels the throws to be at right angles to each other, therefore the
motion is not so violent and the shaking is less perfect.

page_text: The improvements we propose consist in mounting one end upon crank E., as in
fig. 2, with the throws opposite to each other as in a single crank shaker, and sup-
porting the other end upon a bar A1 which has rocking lovers A A keyed upon it,
the rocking levers being horizontal and having short vertical connecting rods B.
supporting the ends of the shakers:
This rocking bar has a lever G connected to an eccentric D keyed on to the main
shaker crank, which eccentric gives an up and down motion to the rods B upon the
rocking bar. By this means we get any required up and down shaking motion at the
inner end of the shaker, the whole of which is easily produced by the one shaker
crank E.
Further we mount the eccentric D on the shaking crank in such a manner that its
throw is easily adjusted from zero to any required amount, aud thus the crank can
be adjusted to give any amount of shaking motion of the shakers so as to suit
different varieties of grain.
Having now particularly described and ascertained the nature of our said Inven-
tion, and in what manner the same is to be performed, we declare that what we
claim as novel are:-
1st. The method of producing the vertical shaking motion by means of rocking
levers as shown and described.
2nd. The combination of this with a single crank having its throws opposite to
each other, the whole arrangement thus producing the most violent vertical shaking
motion with the smallest horizontal travel.
Dated this 4th day of November 1889.
JOHN RICHARDSON.
SAMUEL QUIPP.
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