Binding Harvesters and Straw, Trusser
Year: 1886

page_text: Binding Harvesters and Straw, Trussers,
I, WILLIAM HORNSBY of Spittlegate Iron Works, Grantham in the County of
Lincoln, Engineer do hereby declare the nature of my invention for IMPROVEMENTS
IN KNOTTING AND TYING MECHANISM FOR SHEAF BINDING HARVESTERS AND
STRAW TRUSSERS to be as follows:
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14.
1
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The object of the invention is to simplify the construction and increase the
efficiency of the knotting and tying mechanism. The knotter is similar to what is
generally known as the Appleby type, having one lower or fixed jaw, the upper
jaw being moveable or pivotted; the upper jaw. passes through a suitable slot in
the lower jaw and carries a friction roller at the opposite end of the jaw to where
the knot is made, the object of this roll has been twofold, first to open the upper
jaw at the proper time to allow the string (the extreme ends of which are held
between a notched gripper or retainer wheel and a U shaped yielding bar) to pass
in between the jaws, and afterwards by the pressure of a spring, against this
friction roller the jaws of the knotter have been held firmly together so as to tie
the knot properly. To make a knot properly very much bas depended upon the
proper adjustment of this spring, and the object of the present' invention is to
dispense with the use of the spring for holding the knotter jaws together. To do
this the end of the upper knotter jaw is made of a suitable shape to retain the
ends of the string until the knot is' securely tied, and sometimes it is preferred to
use a spring to assist in opening the jaws of the knotter so that the knotted string
shall pass away from them more freely-for this purpose a spring may be placed
between the knotter jaws or on the heel end of the upper jaw of the knotter.
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page_text: Binding Harvesters and Straw Trussers.
I WILLIAM HORNSBY of Grantham Engineer do hereby declare the nature of an
invention for IMPROVEMENTS IN KNOTTING AND TYING MECHANISM FOR SHEAF
BINDING HARVESTERS AND STRAW TRUSSERS, the result partly of a communication
made to me from abroad by William Burbage of Buenos Ayres South America and
partly of discovery made by me and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :-
My invention is illustrated by the accompanying drawings in which Fig. 1 is a
side elevation of a knotter bracket fitted with the different parts of mechanism for
knotting &c. Fig. 2 is a plan view partly in section of the lower part of Fig. 1.
Fig. 3 shews a part of the knotter also a knot similar letters of reference indicate
corresponding parts throughout the drawings. In figure 1 A is the bracket on
which the various parts or pieces of mechanism are mounted. B shows a section of
the plate attached to the under side of the knotter bracket. C shows a guide bar
to keep the string that binds the sheaf or truss on the knotter. D is the gripper
or retainer wheel that holds the extreme ends of the string while the knot is tied
the string is laid in one of the notches on the outside edge of the wheel D. the
wheel is then caused to rotate a sufficient distance to press the string between the
jaws of the spring lever E. The wheel D as shewn at Fig. 2 is operated by
the pinion F. & the worm G The pinion F is made fast to the axis that carries
the wheel D the worm G being operated by suitable mechanism to give the
necessary movement to the wheel D I do not confine myself to the mechanism
sbewn in the drawings for operating the wheel D. as a ratchet and pawl or other
mechanism may be used for this purpose. The knotter is similar to what is
generally known as the Appleby type and makes one revolution to each knot that
is tied being operated by a wheel not shown in the drawings working in the
pinion M. and revolving on the axis N.
The knotter has one lower or rigid jaw H and one upper jaw I. which is
moveable or pivoted the jaw I passes through a suitable slot in the jaw H.
and carries a friction roll J at the opposite end to where the knot is tied
The object of this roll has been two-fold first to open the jaw I at the proper
time to allow the string to pass in between the jaws this is done by the roll coming
in contact with the projection P and afterwards by the pressure of an adjustable
spring against the roller J the jaws H and I have been held firmly together so as
to tie the knots securely To make a knot properly very much has depended on
the proper adjustment of this spring which has been a constant source of trouble
to the attendant. If too little pressure has been on the spring the knot is not
securely tied and if too much pressure the knot is drawn off the knotter with
difficulty.
The object of the present invention is to dispense with the use of a spring for
holding the knotter jaws together while the knot is tied. To do this the end
of the jaw I is made of a suitable shape to retain the ends of the string until the

page_text: knot is securely tied. The extreme end of the jaw I being just as much hooked as to
retain a hold of the knot until it is completed and then allow the knot to slip off
the jaw. Fig. 3 shows a part of a knotter with the knot completed and ready to
leave the knotter A slightly further pull at the knot causes the jaw I to rise
as shown by the dotted lines at Figure 3 and allows the knot to escape After
the knot is tied it is drawn off the knotter by the lever K which vibrates on the
pin L
Having thus described the nature of my invention and the manner of performing
the same I would have it understood that I claim-
First In Sheaf Binding Harvesters or Straw Trussers making the knotter of
such a shape that it will work without the use of a spring to hold the knotter jaws
together while the knot is being tied as shown and described with reference to
Figs. 1. 2 and 3 of the drawings.
Second-The combination of the knotter without the spring and the rotating
retainer wheel D, as shown and described in Figs. 1, 2 and 3, of the drawings.
Third: The mechanism for retaining the string making the knot and drawing
the knot of the knotter as shown and described in the drawings herewith.
Dated this 26th day of November 1886.