Straw Trussing Machinery.
Year: 1885

page_text: Straw Trussing Machinery.
We JAMES HORNSBY and JOHN INNOCENT of Grantham Lincolnshire, Engineers
do hereby declare the nature of our invention for IMPROVEMENTS IN TRIPPING
MECHANISM FOR SHEAF BINDING AND STRAW TRUSSING MACHINERY to be as
follows:
.. )
The object of our Invention is to improve the tripping device now in use on
some Sheaf Binding and Straw Trussing Machinery. The sheaf or straw is thrust
by revolving or vibrating "packers against compressing jaws until a sufficient
quantity for a sheaf or truss is packed between the jaws and packers, and the bulk
of straw or corn thrusts the upper part of the packer backwards, and by its action
trips the mechanism, and binds the sheaf or truss. The lower part of the above
named packer is connected by a link to a lever mounted on a rock spindle, another
lever on this rock spindle comes in contact with the trip lever, and when the upper
part of the packer is thrust back it causes the spindle to rock, thus moving the trip
and putting the Machine into motion. During some parts of the operation we find
there is a large amount of vibration on this rock spindle, and the object of our
invention is to prevent this undue vibration To do this we place the lever under
the control of some yielding substance-It may be a steel or other spring or springs
or cushions of India Rubber, or other elastic material-By preference we control
the lever by two steel springs held in position by a fixed bar, one spring resisting
the downward motion of the lever, the other spring resisting the upward motion
of the lever, this spring may be adjusted to cause the sheaf or truss to be packed
slacker or tighter as may be required.

page_text: improvements in tripping means a DV
Straw Trussing Machinery.
We, JAMES HORNSBY and JOHN INNOCENT both of Grantham in the county of
Lincoln, Engineers do hereby declare the nature of our invention for IMPROVE-
MENTS IN TRIPPING MECHANISM FOR SHEAF BINDING AND STRAW TRUSSING
MACHINERY and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our improvements particularly relate to that class of Machines in which the
crop or straw is put together into bundles by packers and afterwards bound into
sheaves or Trusses-Sometimes the tripping mechanism is operated by the pressure
of the crop or straw against the ends of the packers so as to make the packer rock
upon its axis and as one end of the packers are forced back by the bulk of the crop
or straw the other end is made to vibrate a trip rod and thus set the binding
mechanism in 'motion.-Our improvements are illustrated in the accompanying
drawings-We only shew so much of the mechanism of a Binder or trusser as will
serve to illustrate our improvements-in which Fig. 1 is an end elevation in section
shewing the tripping mechanism of a Sheaf or Straw Trusser-Fig. 2, shews a front
elevation of the same.-Fig. 3 is an end elevation of the trip Lever, & with a flat
spring applied in place of a coiled spring as shewn at Fig. 1-Fig. 4 shews same
view as Fig. 3, but with an India-rubber or other kind of yielding tube applied in
place of a steel spring-Similar letters of reference indicate corresponding parts
throughout the drawings.-In Fig. 1 A A are the frame tubes-B is the frame-
work made fast to the tubes A.-C is the binder table on which the crop or straw
is delivered to be made into bundles by the packer E-D is the packer spindle, one
end of this spindle is formed into a crank D' to work the packers E-only one
packer is shewn, but two or more packers may be used, F is a link connecting the
heel of the packer E to the trip rod G which may be in one piece with the spindle G¹
having the end G2 formed into a lever-H is an adjusting screw or bolt through
the lever GI is the trip lever to start the binder gear J which causes the crank
arm K on the needle spindle K¹ to rise to the position shewn by the dotted lines-
We find in practice that when the heel of the lever I is lifted from the screw H
the packer Ê with the link F and the trip rod G are free to vibrate considerably
and to cause excessive wear on these parts also on the crank D-Our improve-
ments consist in applying means to prevent this excessive vibration, 'to do this by
preference, we apply two coiled springs L L with a fixed bracket M between
them. The spring L forms a yielding substance between the rod G and the fixed
bracket M, and the spring L' assists in holding the rod G in its normal position and
alsó forms an auxiliary'trip spring which may be adjusted by the nut N so as to
pack the sheaf or truss as tight as may be desired so that when the trip lever G is
forced up to the dotted lines (to trip the binder mechanism) the spring L' is
compressed and returns the rod G to its original position thus the spring L forms
a yielding pressure against the lever G going downwards whilst the spring L' must
be compressed to allow the lever to rise If desired the spring L' may be placed

page_text: above the lever G instead of below the bracket M. In place of a coiled spring any
other yielding substance may be used. At Fig. 3 we shew a flat spring O, and at
Fig. 4 we show two pieces of India rubber or other flexible tube P. P¹.
Having now described and ascertained the nature of our said invention and in
what manner the same is to be performed we would have it understood that we
do not confine ourselves to the exact details shewn but we declare that what we
claim is :-
In sheaf binders or straw trussers in which the packer or packers operate the
binder trip mechanism placing a yielding substance or substances to hold the trip
rod in position substantially as shewn and described.