IMPROVEMENTS IN PLOUGHS
Year: 1885

page_text: "
I JAMES OLIVER of 10 Duchess Street, Portland Place, in the County of Mid-
dlesex, Plough Manufacturer do hereby declare the nature of my invention for
"IMPROVEMENTS IN PLOUGHS (a communication to me from abroad by Charles
Anderson of South Bend Indiana, United States of America, Plough Manufacturer)
to be as follows:-
In ploughs it is desirable to make the parts exposed to the greatest wear
removeable so that they can be replaced when worn out by other similar parts.
This invention relates to the upper part of the leading cutting end of the plough
and consists in having a removeable cutter or shin piece. This shin piece is made
and arranged so that it can be fixed without any projecting bolts or fastenings on
its exposed surfaces, in order that when in place it shall present a perfectly smooth
and even surface forming a continuation of that of the mould board without any
projection against which the mould can catch.
The shin piece fits on to the leading edge of the bar or upright, which carries
the share and the mould board. The back of the shin piece is about twice the
breadth of the edge of the upright and throughout its whole length one half
projects back further than the other half so that whilst the latter half beds on and
forms a continuation of the leading edge of the upright the other lies alongside of
it and beds against the leading edge of the mould, board.
The back of the shin piece carries a lug which fits into a groove on the face of
the upright, so that one side of the lug rests on the bottom of the groove and the
other side rests against the back surface of the mould board. By this mode of
construction the shin piece is firmly kept in position and cannot be displaced by
any side way or backward strain, it can only be removed by being drawn forward.
To prevent this from accidentally taking place the lug has a recess formed in it to
receive the head of a bolt which passes backwards through a boss on the upright,
and is secured by means of a nut. Other means of holding the shin piece in place
may however be adopted, so long as the attachment to it is made at the back in
order that there may be no projection on its exposed surfaces.
Doted thin OL
T

page_text: I JAMES OLIVER of 10 Duchess Street, Portland Place, in the County of Middlesex,
Plough Manufacturer (a communication to me from abroad by Charles Anderson of
South Bend, Indiana, United States of America Plough Manufacturer) do hereby
declare the nature of this invention and in what manner the same is to be
5
performed to be particularly described and ascertained in and by the following
statement:
In ploughs it is desirable to make the parts exposed to the greatest wear
removeable so that they can be replaced when worn out by other similar parts.
This invention applies especially to ploughs in which a central support attached
to the frame, of the plough carries a share point or nose and a wing piece and also 1
a mould board and land side.
In such ploughs I provide a removeable cutter or shin piece upon the central
support.
It forms the upper part of the leading cutting end of the plough,
This shin piece is made and arranged so that it can be fixed without any
projecting bolts or fastenings on its exposed surfaces, in order that when in place
it shall present a perfectly smooth and even surface forming a continuation of that
of the mould board without any projection against which the mould can catch.
.
The shin piece fits on to the leading edge of the central support or bar or
upright which carries the share and the mould board. The back of the shin piece
is about twice the breadth of the edge of the upright and throughout its whole
length one half projects back further than the other half so that whilst the latter
half beds on and forms a continuation of the leading edge of the upright the other
lies alongside of it and beds against the leading edge of the mould board.
The back of the shin piece carries à lug which fits into a groove on the face of
the upright, so that one side of the lug rests on the bottom of the groove and the
other side rests against the back surface of the mould board. By this mode of
construction the shin piece is firmly kept in position and cannot be displaced by
any side way or backward strain, it can only be removed by being drawn forward.
To prevent this from accidentally taking place the lug has a recess formed in it
to receive the head of a bolt which passes backwards through a boss on the upright,
and is secured by means of a nut. Other means of holding the shin piece in place
may however be adopted, so long as the attachment to it is made at the back in
order that there may be no projection on its exposed surfaces.
In order that my said invention may be most fully understood and readily
carried into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation and Figures 2 and 3 are opposite sido elevations of
a plough provided with a moveable cutting shin piece in accordance with my

page_text: renewable shin piece it is shown separately by the Figures 4 and 5. Figuro 4 is a
side elevation and Figure 5 is a back view. In front at f¹ it comes to a knife
edge. It has two faces f' and f³ which when the shin piece is in place are
continuous with the corresponding faces of the land side and the mould board.
The surface fin rear of the shin piece is of the same width as and abuts upon the
leading edge of the central support A; it is overlapped by the surface fs which
projects rearwards and meets the leading edge of the mould board.
fx is a lug on the rear face of the shin piece-it enters a corresponding recess
in the leading edge of the central support. g is the retaining bolt its head is
received into a cavity provided for it in the lug f** and its stem passes through
the central support and projects to the roar where it receives a nut which serves to
retain the shin pieco in place.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
(1.) The combination with a plough of a readily removeable and renewablo
shin piece adapted to the central support and continuing the surface of the mould
board to a cutting edge in front of the said support substantially as described.
(2.) Tho removeable and renewable shin piece F substantially as described and
represented by the annexed drawings.