An Improved Reversible Share for Ploughs, Scarifiers, and Cultivators.
Year: 1889

page_text: ale of Application, 6th May, 1889--Accepted, 15th June, 1889
An Improved Reversible Share for Ploughs, Scarifiers, and
Cultivators.
We WILLIAM HEITHERSAY of Petersburgh in the Province of South Australia
Blacksmith and ERNEST EYSTON HARROLD a member of the firm of Harrold Brothers
of Adelaide in the Province of South Australia, Hardware and Machinery Merchants,
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:-
The object of our invention is to enable a share to be reversed when one end
becomes blunt and by enabling this to be done we cause the share to sharpen itself
to last longer and do more work thus effecting great economy in field operations.
The share can be used with stump jumping as well as ordinary ploughs and
implements.
In order to accomplish the desired end we have found that it is necessary to make
a modification in the foot of the plough or other implement to which the share is
applied. The foot instead of being made in one of the shapes in present use
pointing in the direction in which the plough or other implement is being propelled
is formed as shewn in the drawing annexed hereto of shape and dimensions to
correspond with the socket in the share.
In the drawings which are made one half life size
Figure 1 is a general view of the share and the foot upon which it is fitted in
position for ploughing.
Figure 2 is a section of the socket.
Figure 3 18 plan of the foot in position for ploughing.
Figure 4 is front elevation of foot.
Figure 5 is back elevation of foot.
D represents the share. A the socket. B the foot of plough or implement which
inserts into the socket A as shewn by dotted line and C the pin hole drilled through
the top of share and through the foot the pin in which secures the share and keeps it
firmly in position.
We would have it understood that we do not limit ourselves to the precise shape
or dimensions of the foot and socket or to the precise angles of the share and socket
shewn in the drawings as variations in detail may be made without departing from
the principle and method of our invention.
The manner in which our invention is used is as follows. The share can be put on
the foot with either point as the front. When it has worked a sufficient length of
time to blunt the point the share can be taken off and reversed so that what was the
wing before and has been worn to a sharp edge takes the place of the other point
which has become blunted. This process can be repeated until the share is worn out.
CLAIM
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
1. The reversible share having one centrally situated socket fitting a foot of the
description shewn to enable the share to be reversed so that each point is used as wing
11
Land described

page_text: 2. In a reversible share such as described in claim 1 a socket formed of the
shape and direction substantially as shewn in the drawing.
Dated this Twentyninth day of March 1889.
WILLIAM HEITHERSAY.
ERNEST EYSTON HARROLD.
Haseltine, Lake & ('o,
45, Southampton Buildings, London Agents for the Applicants.