Year: 1887

page_text: Date of Application, 16th Aug., 1887
Complete Left, 26th Jan., 1888
Complete Accepted, 2nd Mar., 1888
1, WILLIAM BRENTON, of Polbathic, St. Germans, in the County of Cornwall,
Millwright and Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
My invention relates to seed drills or sowers and comprises improvements as herein-
after described.
According to my said invention the seed deliverer is in the form of a roll having
a concave or hollow surface, the part of smaller diameter being midway between the
two ends. At this part of small diameter are formed a number of curved teeth or
projections which are adapted to move the grain or seed towards the discharge
opening.
This opening is provided with an adjustable slide whereby its area may be enlarged
or reduced, thereby correspondingly increasing or diminishing the rate of sowing.
In order to prevent the said opening from becoming choked I arrange a small
brush in proximity to one of the said teeth so that at each revolution of the delivery
roll the brush passes before the said opening and removes any obstruction.
My improved delivery roll is preferably mounted in the box or case with its ends
located in suitable recesses to prevent seed from entering between the said roll and
the box or case.
D
1
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.

page_text: I, WILLIAM BRENTON, of Polbathic, St. Germans, in the County of Cornwall,
Millwright and 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 or sowers and comprises improvements as herein-
after described.
According to my said invention the seed deliverer is in the form of a roll having a
concave or hollow surface the part of smaller diameter being midway between the
two ends. At this part of small diameter are formed a number of curved teeth or
projections which are adapted to move the grain or seed towards the discharge
opening.
This opening is provided with an adjustable slide whereby its area may be enlarged
or reduced, thereby correspondingly increasing or diminishing the rate of sowing.
In order to prevent the said opening from becoming choked I arrange a small
brush in proximity to one of the said teeth so that at each revolution of the delivery
roll the brush passes before the said opening and removes any obstruction.
My improved delivery roll is preferably mounted in the box or case with its ends
located in suitable recesses to prevent seed from entering between the said roll and
the box or case.
To enable my invention to be clearly understood I will describe how it may be
conveniently and advantageously carried into practice by reference to the accompanying
drawing in which
Figure 1 is a sectional elevation of so much of my improved seed drill as is necessary
to illustrate my invention, and
Figure 2 is a plan of the same partly in section on the line x, x figure 1.
Figure 3 is a view illustrating a modification.
a is the box or seed receptacle of the implement. b is an axle driven from the
wheels of the implement, and c is the seed delivery roll which is of smaller diameter
at the centre than at the ends and which has the curved teeth or projections d, d which
are inclined backwardly from the direction in which the roller rotates.
e is the opening through which the seed is delivered and is the adjustable slide
for regulating the size of the said opening, the said slide being adapted to move in
guides 9, 9 and to be held in any required position by a thumb screw h passing
through a slot i in the slide.
Instead of using the slide shewn in figures 1 and 2 I may employ a disc having a
series of openings formed therein as shown in figure 3, the amount of seed delivered
by the roll being proportionate to the size of the particular opening in the disc which
is opposite to the aperture e,

page_text: is the brush which is carried by the roll c and adapted to brush the opening e at
each revolution of the roll. As shown the said roll is secured in place by a wedge k.
If desired I may employ two or more brushes ; arranged at suitable distances apart.
In the drawing the ends of the roll are shown located in circular recesses / in the
box a, one end m of the said box being removeable as shown in figure 2.
In the operation of my improved drill the roll is caused to rotate in the direction
indicated by the arrow, figure 1, and carries the seed towards the opening e through
which it is discharged either into a shoot or otherwise as desired.
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. In a seed drill or sower, the employment of a seed delivery roll having a concave
peripheral surface and provided with a series of curved teeth, inclined in the direction
in which the said roller rotates, substantially as described.
2. In a seed drill or sower, the combination with the seed delivery roll having a
series of teeth or projections upon its peripheral surface, of a brush or brushes arranged
in connection with the said teeth, substantially as, and for the purpose, described.
3. A seed drill or sower provided with the improvements substantially as herein-
before described and illustrated in the accompanying drawing.
Dated the 26th day of January 1888.
G. F. REDFERN & Co.,.
. 4, South Street, Finsbury, London,
Agents for the Applicant.