IMPROVEMENTS IN THRASHING MACHINES
Year: 1885

page_text: I, JAMES MARSHALL of the Firm of Marshall Sons & Company Limited of
Brittannia Iron Works, Gainsborough in in County of Lincoln, Engineers do
hereby declare the nature of said Invention for "IMPROVEMENTS IN THRASHING
MACHINES to be as follows:-
My Invention has for its object to provide a simple and efficient means for
driving the straw shakers from the dressing shoes of thrashing machines.
According to my Invention I attach to each shoe outside the frame on each side
of the machine a rod the opposite end of each rod is attached to either end of a
cross bar extending under the shakers. The spring hangers of the shakers are
attached the one set at or towards the one end of the shakers and the other set to
the aforesaid rods from the shoes the connection of these last named hangers being
made by preference to the said rods at points nearer to the connection of the rods
to the shoes than are the points at which the rods are connected to the bar
extending under the shakers. The spring hangers are not vertical but are inclined
at such an angle to the vertical line as to give the necessary combination of
horizontal and vertical movements necessary for the efficient action of the shakers.
The connections as described from the shoe operate alternate shakers whilst the
connections from the shoe operate the other shakers and the connections from the
one shoe may be made with the shakers which it operates at the ends of
the shakers opposite to the ends at which the connections from the other shoe to
the remaining shakers are made or the connections may be made all at the
same ends.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for the said James Marshall.

page_text: Improvements in Thrashing Machines.
I JAMES MARSHALL of the firm of Marshall Sons & Co Limited of Brittannia
Iron Works Gainsborough in the County of Lincoln Engineers 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:-
My Invention has for its object to provide a simple and efficient means for
driving the straw shakers from the dressing shoes of thrashing machines.
I will describe my Invention with reference to the accompanying drawing which
represents so much of a thrashing machine as is necessary to explain my Invention
I attach to the cross bar of each shoe outside the frame on each side of the machine
a rod the opposite end of each rod being attached to either end of a cross bar
extending under the shakers. In the drawing c represents the cross bar of the top
shoe and a is the rod the opposite end of which is attached to the cross bar d
extending under the shaker boxes and attached to every alternate one of them.
g represents the cross bar of the lower shoe and f is the rod the opposite end of
which is attached to the cross bar i extending under the shaker boxes and attached
to those to which the bar d is not attached. The spring hangers k and 7 of the
shakers are attached respectively to the alternate sets of shaker boxes, the other
spring hangers e and j being connected respectively to the aforesaid rods a and f
the connection of these last named hangers to the said rods being made by
preference as shewn that is to say at points nearer to the connection of the rods a
and to the shoes than are the points at which the said rods are connected to the
bar extending under the shakers. The spring hangers hereinbefore mentioned are
not vertical but are inclined at such an angle to the vertical line as to give the
combination of horizontal and vertical movements necessary for the efficient action
of the shakers. X is the crank shaft from which the shoes are operated and also
the sbakers through the connections as described, each shoe operating alternate
shakers. The connections from the shoes may be made as shewn in the drawing,
that is to say those from the one shoe with the shakers which it operates at the
ends of the shakers opposite to the ends at which the connections from the other
shoe to the remaining shakers are made, but the connections may be made all at the
same ends if desired. m and n are the spring hangers carrying the lower shoe and
op are those carrying the upper shoe.
It will be understood that the parts described are duplicated on the other side of
the machine.
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 what
I claim is
In thrashing machines the combination with the shoes and shakers of cross bars
connecting rods and spring hangers arranged and combined for effecting the
operation of the shakers from the shoes substantially as herein before described.
Dated this 5th day of November 1885.
J. HENRY JOHNSON,
Agent.