Improvements in Seed Drills.
Year: 1892

page_text: Date of Application, 1st Mar., 1892
Complete Specification Left, 30th Nov., 1892-Accepted, 21st Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Seed Drills.
I, PHILIP PIERCE, of Mill Road Iron Works, Wexford, Ireland, Agricultural
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to seed-drills of the kind described in the Specification of
former Letters Patent granted to me No. 650 of 1883.
According to my present invention I regulate the quantity of seed delivered
from the seed box by means of a plate having a series of holes of different sizes
formed therein and one or the other of which is placed opposite the hole or
aperture through which the seed is discharged.
In order that the attendant shall be able to arrest the discharge of seed from the
hopper at will without leaving his position behind the implement I provide a stopper
adapted to be pushed forward to cover the hole through which the seed is being
delivered. This stopper is arranged in conjunction with a spring which normally
holds it away from the seed box and is operated to move it against the pressure
of the spring through the medium of suitable rods and levers one of which latter
is pivotted upon one of the handles of the implement in a position close to the
attendants hand.
Dated the 1st day of March 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Seed Drills.
I, PHILIP PIERCE, of Mill Road Iron Works, Wexford, Ireland, 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:―
My invention relates to seed drills of the kind described in the Specification of
former Letters Patent granted to me No. 650 of 1883.
According to my present invention I regulate the quantity of seed delivered from
the seed-box by means of a plate having a series of holes of different sizes formed
therein and one or the other of which is placed opposite the hole or aperture through
which the seed is discharged.
In order that the attendant shall be able to arrest the discharge of seed from the
hopper at will without leaving his position behind the implement I provide a stopper
adapted to be pushed forward to cover the hole through which the seed is being
delivered. This stopper is arranged in conjunction with a spring which normally
holds it away from the seed-box and is operated to move it against the pressure
of the spring through the medium of suitable rods and levers, one of which latter
is provided upon one of the handles of the implement in a position close to the
attendant's hand.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a plan of a seed drill (of the kind described in the Specification of
the Patent before referred to) having my present improvements applied' thereto;
and,
Figure 2 is a sectional side elevation of the same:
Figure 3 is an elevation of a detail drawn to an enlarged scale.

page_text: a is the main frame, is the seed-box, and c, e are the handles, all of which parts
are of well known construction and require no further description.
d is my seed regulator which is in the form of a disc and provided with a series of
holes of varying size, as shewn in Figure 3. The said disc dis mounted upon a
screw-stude and adapted to be fixed thereon by a thumb-nut f with one or the
other of the holes in the disc opposite to the aperture g in the seed-box through
which the seed escapes into the seed delivery pipe h. i is my stopper which is
adapted to be pressed against the disc d to cover the hole through which the seed
is being delivered. This stopper is secured to a bar sliding in a tubular guide
formed integral with the said delivery pipe h, a spring being arranged between
the bar and the bottom of the guide in which it works, for the purpose of
normally holding the stopper i away from the disc d. The bar is connected by a
rod m to one end of a lever n pivotted at o, the other end of the said lever being
connected by a rod to a lever q in proximity to one of the handles c of the
implement in such a manner that, when the lever q is pulled upwards towards the
said handle, the bar will be pressed forward to force the stopper i against
the disc d.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with a seed drill (of the kind described in the Specification
of former Letters Patent No. 650 of 1883) of a disc d pivotted to the seed-box of
the seed drill and having formed in it a series of holes of different sizes so that the
quantity of seed discharged from the seed-box may be regulated by placing one or
the other of the holes in the disc opposite the discharge opening in the said seed-
box, substantially as described.
2. The combination with a seed-drill of the kind hereinbefore referred to of a
stopper adapted to be pressed against the discharge opening in the seed-box for the
purpose of stopping the flow of seed therethrough but normally held away from
the said opening by means of a spring, substantially as described.
3. The manufacture and use of the improved seed drill hereinbefore described
and illustrated in the accompanying drawings.
Dated the 30th day of November 1892
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.