Improvements in Seed Drills.
Year: 1890

page_text: Date of Application, 3rd Dec., 1890
Complete Specification Left, 27th Aug., 1891-Accepted, 31st Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Seed Drills.
I, GOTTHARD COMMICHAU, of Magdeburg-Sudenburg, Germany, Engineer, do
hereby declare the nature of this invention to be as follows:-
A
Our invention relates to seed tubes or conveyors in drilling machines but more
especially to the tubes which convey the seed from seed box to share funnels, such
tubes being made according to our invention by forming over a mandril or in some
other convenient manner a tube from a spirally cut strip of sheet metal.
straight strip of sheet metal may also be employed but that case the one edge
must be worked so as to be shortened in order to be able to twist or form the strip
into the funnel shape.
A tube or tube like channel formed in this manner is obviously very elastic and
pliable and, as shewn in the drawing herewith can be provided with or shaped into
a funnel at top for the seed to drop in or it may end in a closed tube as likewise
shewn in the drawing.
Dated this 28th day of November 1890.
C. R. BONNE & Co.,
41, Eastcheap, E.C., Authorised Patent and Trade Mark Agents.
COMPLETE SPECIFICATION.
Improvements in Seed Drills.
I GOTTHARD COMMICHAU of Magdeburg Sudenburg in the German Empire,
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 drilling machines and has for its object to spread the
seed with less uniformity and regularity than is generally the case when it drops
from the regular kind of drilling machines, which leave it in regular rows.
According to my invention I employ elastic, or flexible metallic tubes made by
forming over a mandril or in some other convenient manner a tube from a spiral cut
strip of sheet metal. A straight strip of sheet metal may also be employed, but in
that case the one edge must be worked so as to be shortened in order to be able to
twist or form into the funnel shape. A tube or tube like channel formed in this
manner is obviously very elastic and pliable and can be provided with or shaped
into a funnel at top for the seed to drop in or it may end in a closed tube as
required. Drawings shewing a flexible tube according to my invention were filed
with the Provisional Application.
It will be understood that this tube, when attached to the drilling machine so that
the seed enters at the top of the tube which is otherwise allowed to hang down
unsupported, by the motion of the drilling machine will be caused to vibrate in all
directions, thus spreading the seed to a certain extent, which is therefore sown in a
manner somewhat as if done by hand.

page_text: Having now particularly described and ascertained the nature, of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: :-
In drilling machines,, elastic, tubes, as seed conveyors, made by twisting a metal
strip into a funnel, substantially as hereinbefore described.
1001
BONNE & Co,
Registered Patent Agents, 57 & 58, Chancery Lane, W.C.,
Agents for Applicant.