IMPROVEMENTS IN THRASHING MACHINES
Year: 1885

page_text: I JAMES MARSHALL of the firm of Marshall Sons and Company Limited of
Britannia Iron Works Gainsborough in the 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 dressing shoes and straw shakers of thrashing machines.
According to my Invention I attach to each shoe outside the frame a spring rod
or jointed rod the opposite end of each of which rods is attached to one end of a
straight or double ended rocking or bell crank lever the other end of which lever
is attached to a cross bar. That of the cross bars which is actuated from the one
shoe is connected to each alternate shaker box and the cross bar actuated from the
other shoe is attached to the other alternate shaker boxes the opposite ends of each
box being suspended on spring hangers (or supported by rods from below) The
connections of the hangers or supporting rods with the boxes are preferably not
effected all at the same end of the machine but the connections of the hangers or
rods corresponding to those of the one cross bar to every alternate box are effected
at or towards one end of the machine and the connections of the hangers or rods
corresponding to those of the other cross bar to the remaining boxes are effected at
the other end of the machine.
Datad this 20...1 Jan CT
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, W.C.,
Agent for the said Jas Marshall.

page_text: COMPLETE SPECIFICATION.
1
Improvements in Thrashing Machines.
I JAMES MARSHALL of the firm of Marshall Sons and Company Limited of
Britannia Iron Works Gainsborough in the County of Lincoln Engineers do
hereby declare the nature of this invention for "IMPROVEMENTS IN THRASHING
MACHINES" 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 dressing shoes and straw shakers of thrashing machines.
I will explain my Invention with reference to the accompanying Drawing which
represents in side elevation so much of a machine as is necessary for the purposes of
Buch explanation.
According to my Invention I attach to each shoe outside the frame of the
machine a spring rod or jointed rod (a¹ and a³) the opposite end of each of which
rods is attached to one end of a straight or double ended rocking or bell crank
lever (61 and 62) the other end of each of which levers is attached to a cross
bar (d and d²) That of the cross bars (d) which is actuated from the one shoe (f¹)
is connected to each alternate shaker box and the cross bar (d) actuated from the
other shoe (g) is attached to the other alternate shaker boxes the opposite ends of
each box being suspended on spring hangers (c' and c³) or they may be supported
by rods from below. The connections of the hangers or supporting rods with the
.boxes are preferably not effected all at the same end of the machine but as
indicated in the Drawing the connections of the hangers or rods corresponding to
those of the one cross bar to every alternate box are effected at or towards one end
of the machine and the connections of the hangers or rods corresponding to those
of the other cross bar to the remaining boxes are effected at the other end 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 rods
and levers connecting the shoes with the shakers and arranged and operating
substantially as hereinbefore described and illustrated by the accompanying
Drawings.
1.