Improvements in or connected with Corn, Seed, and Manure Drills:
Year: 1892

page_text: Date of Application, 25th Nov, 1892
Complete Specification Left, 25th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in or connected with Corn, Seed, and Manure Drills:
We, LEONARD RANDOLPH KNAPP and THOMAS EDWARD KNAPP, both of
Thames Valley Iron Works, Clanfield, Faringdon, in the County of Buckingham,
Agricultural Engineers, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to corn, seed and manure drills and comprises improved
means for regulating the depth at which the coulters or hoes work and for lifting
the same clear of the ground without throwing any strain upon the framing of the
implement or any weight upon the horses or forecarriage.
According to our invention we place on the axle or upon an independent shaft.
parallel with the said axle two or more arms (which may be fixed to or loose upon
the said axle or shaft) carrying a horizontal lifting bar to which the coulters or
hoes and draw bars are connected by means of a link or rod. Attached to the.
lifting bar and pivotted on the axle or on an independent axis is an operating lever,:
which is operated to lift the coulters or hoes clear of the soil or press them to the
required depth. The lifting bar may be placed either behind or in front of the
axle and instead of being carried by arms as hereinbefore described may be carried
by eccentrics. Also the lifting bar instead of being moved by a lever may be.
or the like
operated by means of cranks, eccentrics, connecting rods, spur gearing
and may be arranged so that the drillman may ride on the machine and lift or lower.
the coulters at will.
Sometimes I form the lifting bar by cranking the axle of the implement.
Spiral springs or their equivalent are employed in conjunction with the lifting
bar so that the coulters or hoes shall all be pressed to a uniform depth when going
un a ridge or furrow.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or connected with Corn, Seed, and Manure Drills.
We, LEONARD RANDOLPH KNAPP and THOMAS EDWARD KNAPP, both of
Thames Valley Iron Works, Clanfield, Faringdon, in the County of Berks.,
Agricultural Engineer, 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 :-
Our invention relates to corn, seed and manure drills and comprises improved
means for pressing the coulters or hoes into the ground according to the depth at
which they are to work and for lifting the said coulters clear of the ground without
throwing any strain upon the framing of the implement or any weight upon the
horses or fore-carriage.
According to our invention we place on the axle or upon an independent shaft.
parallel with the said axle two or more arms (which may be fixed to or loose upon
the said axle or shaft) carrying a horizontal pressing and lifting bar to which the
coulters or hoes and draw-bars are connected, the said bar being advantageously about
6 or 7 inches from the said axle or shaft. Pivotted on the axle or independent shaft..
is an operating lever, which is operated to lift the coulters or hoes clear of the soil.
or press them to the required.depth. The pressing and lifting bar may be placed

page_text: .
either behind or in front of the axle and instead of being carried by arms as
hereinbefore described may be carried by eccentrics.
Spiral springs or their equivalent are employed in conjunction with the pressing
and lifting bar so that the coulters or hoes shall all be pressed to a uniform depth
when going up a ridge or furrow.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a plan view of so much of a drilling implement as is necessary to
illustrate our invention; and,
+
Figure 2 is a sectional side elevation of the same.
a is the frame of the drill or implement, 6 is the main axle carried in the said
frame, and c, c are the travelling wheels. d, d are the coulters, and e, e are the
draw bars which at their front ends are pivotted to a bar f in the usual manner.
.
g is the pressing and lifting bar, and h, h, h are the arms or brackets carrying
the same, the said brackets as shewn in the drawings being represented as loose on
the axle b which is fixed to the frame a. i is a lever fixed to one of the said arms
and serving for lifting or lowering the bar g. Instead of the arrangement just
described the arms h and lever i may be fixed to the axle, the latter being allowed
freedom to rotate. The lever i is provided with a spring-catch j engaging with a
slotted segment k fixed to the framing of the machine, the said catch and segment
serving to retain the lever i and consequently also the bar g in any position in which
they may be placed.
The bar has fixed to it a series of sockets 1, 1 which are united by links m, m.
with the draught bars e, e in such a manner that when the barg is lifted the draught.
bars and consequently also the coulters d, d will be lifted. The links m, m which
at their lower ends are pivotted to the draught bars e, e at their upper ends slide in
the said sockets I, l in such a manner that the coulters d, d can rise to a certain
extent past obstructions, springs n, n (surrounding the links m, m and pressing with
their lower ends against pins o, o in the said links and at their upper ends against
the undersides of the sockets 1, 1) serving to normally press the coulters & into the
ground to the depth at which they are set to work by the lever i.
In order to adjust the length of the links m, m the latter are provided with:
holes p, p through either of which a pin may be passed according to the length of
link required.
In case any abnormal strain should be put upon the coulters the latter are
preferably pivotted to the draw bars e, e and provided with extension plates 9, 9
having one or more holes r, r therein, through which wooden pegs, which also pass
through holes in the draw bars, may be passed, the said wooden pins breaking and
thereby allowing the coulters to yield should the latter encounter obstructions.-
a
The pressing or lifting bar g hereinbefore described instead of being moved by
lever may be operated by means of cranks, eccentrics, connecting rods, spur-gearing
or the like and may be arranged so that the drillman may ride on the machine and
lift or depress the coulters at will.
Sometimes also the lifting bar g may be formed by cranking the axle of the.
implement to the required extent.
Although we have described the lifting and pressing bars as being carried by
arms upon the main axle of the machine it is to be understood that the arms
carrying such lifting and pressing bar may be carried upon an independent shaft
parallel with the main axle.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is
1. A drill for corn, seed, manure and other substances having coulters arranged
in such a manner that the said coulters may be directly depressed more or less
according to the extent at which they are required to work, or lifted clear of the 5
ground by means of a lever, substantially as described...

page_text: 2. The improvements in or connected with corn, seed and manure drills
substantially as hereinbefore described and illustrated in the accompanying
drawings.
Dated this 25th day of August 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.