Iм- PROVEMENTS IN AGRICULTURAL DRILLS." PROVEMENTS IN AGRICULTURAL DRILLS
Year: 1874

page_text: LETTERS PATENT to Charles Dening and Samuel Henry Dening, both
of Chard, in the County of Somerset, for the Invention of "Iм-
PROVEMENTS IN AGRICULTURAL DRILLS."
PROVEMENTS IN AGRICULTURAL DRILLS."
Sealed the 15th December 1874, and dated the 3rd July 1874.
PROVISIONAL SPECIFICATION left by the said Charles Dening and
Samuel Henry Dening at the Office of the Commissioners of Patents,
with their Petition, on the 3rd July 1874.
We, CHARLES DENING and Samuel Henry DENING, both of Chard,
in the County of Somerset, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN AGRICULTURAL DRILLS," to be as follows: -
Our Invention relates to improvements in corn and seed drills, and
consists in the employment in the corn box of a revolving barrel pro-
vided with right and left hand spiral blades, disposed in sets, one set for
each row.

page_text: The barrel is preferably made in short lengths placed on a rod or shaft,
and each length or set consists of a right and left spiral blade with a
series of inclined blades between them, the corn or seed being continually
brought by the former to the latter, by which it is delivered through a
hole in the back of the box, which hole can be regulated to sow any
quantity.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Dening and Samuel Henry Dening in the
Great Seal Patent Office on the 2nd January 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHARLES
DENING and SAMUEL HENRY DENING, both of Chard, in the County of
Somerset, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of July, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did for Herself, Her heirs, and successors,
give and grant unto us, the said Charles Dening and Samuel Henry
Dening, Her special licence that we, the said Charles Dening and
Samuel Henry Dening, our executors, administrators, and assigns, or such
-others as we, the said Charles Dening and Samuel Henry Dening, our
executors, administrators, and assigns, should at any time agree with and
no others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
. Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
AGRICULTURAL DRILLS," upon the condition (amongst others) that we, the
said Charles Dening and Samuel Henry Dening, our executors or
"administrators, by an instrument in writing under our, or their, or one
of their hands and-seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was: to be

page_text: performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that we, the said Charles Dening and Samuel Henry
Dening, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, reference being had
to the accompanying Sheet of Drawings, and to the letters and figures
marked thereon (that is to say) :
Our Invention relates to corn and seed drills, and consists in the
employment in the drill box of an improved adjustable revolving barrel
of peculiar construction hereafter described to deliver the corn or seed
to the pipes; also in means of adjusting said barrel to sow large or small
grain, or seed, or manure.
The improved barrel consists of sets of right and left hand spiral
blades, one set for each delivery hole. Each set consists of a central
series of short blades, say four in number, more or less disposed around
the barrel. Two of these blades are inclined to the right and the other
two to the left. At either side of this circle of blades is a longer blade,
that on the one side being right handed and that on the other left
handed. These two blades are on opposite sides of the shaft, and are
éach about half a turn in length, and they are so disposed relatively to
the central circle of blades that the right-handed side blade is adjacent
to the left-handed central blades, and vice versa. The office of the side
blades is to gather the corn or seed towards the central series of blades by
which the corn or seed is delivered through a hole in the back or bottom
of the drill box opposite the central set of blades.
The barrel is preferably constructed in short lengths or castings slipped
on a central shaft or axle, there being say three such lengths for each
set, or the sets may each be cast in one or more length. By this means
should any of the blades be damaged they can readily be removed and
replaced.

page_text: i
The delivery holes, which are in the back or in the bottom of the box,
are of oblong form, and their size may be regulated by a plate sliding
over them, and having similar holes, which concide more or less with
the holes in the box, this plate being adjustable by means of a lever
handle pivoted to the back of drill box and working over a quadrant.
DESCRIPTION OF DRAWINGS.
Figure 1 is an end elevation of the drill box. Figure 2 shows a short
length of the barrel, comprising a single set of blades for one delivery
hole. a is the shaft or axle of the barrel (which is driven by spur
gearing from one of the carrying wheels) made square or round with a
key way, upon which are made fast the short lengths or castings of
which the barrel is composed. The set shown consists of three
castings b, c, d. The first of these has a right-handed Archimedean
screw blade e half a turn in length. The centre casting c has a number
of short blades f,f, and g, g, disposed at equal distances apart around its
circumference of these blades. Those f, f, which are adjacent to the
blade e are left handed, whilst the others 9, 9, are right handed. In
a line with these latter blades is a blade h on casting d precisely similar
to the blade e before described except that it is left handed, and on the
opposite side of the barrel as shown. The journals of the axle a turn
in bearings cast on levers i, of which there is one at each end of the drill
box, and in the case of large drills one in the middle of the barrel, also
inside the box. They are pivoted at their lower ends at k and terminate
in a handle, and are provided with slotted ears 7, by which by a screw-
and-wing nut the lever i may be secured in any position desired. By
moving the levers to or fro the barrel may be moved nearer to or farther
from the delivery holes and at same time raised or lowered in the drill
box to adapt it to sow larger or smaller grain or seed, and also for
manures of all descriptions, either at back or bottom of drill box, which
avoids the necessity of using change wheels or different barrels.
Having described the nature of the Invention and the manner of
performing the same, I declare that what I claim as the Invention to be
protected by the herein-before in part recited Letters Patent is, -
1st. The employment in the drill box of a barrel provided with inclined
or screw blades, constructed and arranged substantially as herein shown
and described for the purpose set forth,

page_text: 2ndly. Mounting the barrel in adjustable bearings, substantially as
and for the purpose specified.
In witness whereof, I, the said Charles Dening, for myself and on
behalf of the said Samuel Henry Dening, have hereunto set my
hand and seal, this Thirty-first day of December, in the year of
our Lord One thousand eight hundred and seventy-four.