Improvements relating to the Shares or Points of Horse Hoes and similar Agricultural Machines.
Year: 1891

page_text: Date of Application, 17th Apr., 1891
Complete Specification Left, 18th Jan., 1892-Accepted, 20th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements relating to the Shares or Points of Horse Hoes and
similar Agricultural Machines.
I, CRISPUS COTtis, of The Archimedean Iron Works, Epping, in the County
of Essex, Agricultural Implement Maker, do hereby declare the nature of this
invention to be as follows :—
My invention relates to improved means of detachably affixing the hoe points
or shares to their tines or stems in horse hoes and other agricultural machines, such
as grubbers and scarifiers for stirring and breaking up or hoeing the land, with
the object of facilitating their renewal or repair.
According to one mode of carrying out the invention, the hoe point or share is
cut out of the required shape from a plate or strip of sheet steel of suitable
thickness and is then cross-slifted and stamped up in dies in order to form a socket
adapted to fit on and embrace the foot of the tine or stem, which is wedge-shaped.
This wedge shaped socket may be formed by bulging upwards the middle portion
between two cross-slits in which ense the heel of the foot would rest on the flat part
of the hoe or share immediately in rear of the socket thus formed. This socket
is wedge-shaped to correspond to the shape of the foot of the stem so that the
farther it is driven on, the tighter it will fit whilst the curving or pressing upwards
of the centre on a convex die gives the required set or transverse curvature to
the hoc.
Instead of forming the socket by bulging the middle portion between the two
slits, this part may be left flat and the socket be formed by bulging upwards two
narrow transverse strips of metal left by cross-slitting the share or one narrow
cross-strip at the rear and V-pointed pieces cut or stamped up out of the share
plate, one at each side of the foot, to embrace the bevelled sides, and one at
the front, to form a forward abutment and protect the point of the foot
from wear.
According to another mode, the share is made of cast iron with chilled cutting
edges, the socket being cast upon the share of such form as to completely embrace
the foot of the stem, which is protected from wear by a small projecting piece
cast in front of the socket for the purpose.
Dated this 17th day of April 1891
COMPLETE SPECIFICATION.
Improvements relating to the Shares or Points of Horse Hoes and
similar Agricultural Machines.
I CRISPUS COTTIS of The Archimedean Iron Works, Epping, in the County
of Essex, Agricultural Implement Maker, 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 improved means of detachably affixing hoe points or
Shares to their times or stems (in horse hoes and other agricultural machines, such
as grubbers and scarifiers for stirring and breaking up or hoeing the land) with
the object of facilitating their renewal or repair.
According to one mode of carrying out the invention, the hoe point or share is

page_text: cut out of the required shape from a plate or strip of sheet steel of suitable
thickness and is then cross-slitted and stamped up in dies in order to form a socket
or sockets adapted to fit on and embrace the wedge shaped foot of the tine
or stem.
According to another mode, the share is made of cast iron, the socket being cast
upon the share of such form as to completely embrace the foot of the stem in the
same manner as the steel hoe.
Reference is to be had to the accompanying drawings forming part of this
Specification wherein
Figure 1 is a longitudinal section of one form of stamped steel share.
Figure 2 is a rear view and Figure 3 a plan of the same.
Figure 4 shows the form of the blank before pressing up the socket.
Figures 5, 6, 7 and 8 are similar views of a stamped steel share with a double
socket.
Figure 9 is a section of a modification. Figure 10 is a section. Figure 11 is a
rear view and Figure 12 a plan of a cast iron shoe.
The same letters of reference indicate similar parts in all the figures.
Referring to Figures 1 to 4, the blank A. having been cut out of the forin shown
in Figure 4 is cross slitted as at a a and the portion & intervening between these
cross slits is bulged upwards by stamping between correspondingly shaped dies
so as to form a bridge piece or socket (Figures 1, 2, 3) of half round cross section
and wedge shape in the longitudinal direction corresponding exactly to the form of
the foot B of the time or stem on which it is to fit. To enable this bridge piece or
socket to be formed without drawing and consequently thinning the metal at this
point the blank is cut of greater width than the intended breadth of the share to
admit of being contracted laterally by the bending of the portion b, this lateral
contraction either having the effect of upsetting and thickening the narrow strip of
metal or being facilitated by the dies being of such form as to give this strip a
downward bend or set as at c¹ (Figure 9) or by first punching a piece out of this
strip as at e (Figure 4) or merely severing it so that by the contraction of the
blank the portions of the strip will butt against one another as at c³ (Figure 3).
The heel of the foot B of the stem bears on this part e or c' and the toe of the foot
bears upon the blade of the share in front of the socket b. Owing to the socket by
its completely arched form bridging entirely over the foot great strength is ensured
and owing to the wedge like form longitudinally of the foot and socket the latter
will fit on the former the more tightly the farther it is driven on so that the parts
are well able to support the strains which come upon them when working in stony
ground and there is no danger of the share becoming loose and falling off whether
in work or when travelling.
The dies are of such form as to give the flat blank the necessary set or transverse
curvature of the share.
Instead of forming the socket by bulging the middle portion between the two
slits, this part may be left flat and a double socket be formed as shown in
Figures 5 to 8 by bulging upwards two narrow transverse strips of metal left
by cross slitting the share as at a a² a' the portion f having a central longitudinal
piece punched out of it as in Figure 8 and the portions left being caused to
butt together by the contraction in breadth of the share consequent on forming the
sockets b¹².
In these various modifications the form of the dies would of course be adapted
to the position of the slits and socket or clips.
The share shown in Figures 10, 11 and 12 is cast, the socket & being of the same
form as when stamped up as before described that is to say open at the underside
and of curplete prehet form at the upper side, the foot and socket being wedge
shaped longitudinally as before. The arched form of the socket gives it the
Strength necessary to admit of its being driven very tightly on the foot of the stem
whilst the aperture at the underside where the metal is not required allows it to be
1st without the us of a core.
dis a projection cast on the share to strengthen

page_text: the point and to protect the toe of the foot from wear, this projection being at such
a distance in advance of the socket that the toe will not abut against it.
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-
1. The herein described means of securing the hoc point or share to the foot
of the stem consisting of an arched socket or sockets formed on the share open at
the underside and embracing the upper side of the foot whilst the latter takes a
bearing upon the blade of the share in rear and front of the socket or sockets, as
described.
2. The mode of forming the herein described socket or sockets by bending up
and laterally contracting the slitted blank in dies as described.
3. A cast iron share having a completely arched longitudinally tapered socket,
open at the underside with bearing portions for the underside of the foot at front
and rear of the socket, as described.
and thin 10th 1 Tour 1800
By A. M. & Win. Clark,
C. COTTIS,
53, Chancery Lane, London, Chartered Patent Agents.