Improvements in Plough Shares.
Year: 1895

page_text: Date of. Application, 19th Apr., 1895
Complete Specification Left, 13th Jan., 1896-Accepted, 29th Feb.,
1896
PROVISIONAL SPECIFICATION.
Improvements in Plough Shares.
We GEORGE GRAY and JOHN GRAY (of George Gray & Co.) Agricultural
Implement Makers Uddingston Plough Works, Uddingston by Glasgow do hereby
declare the nature of this invention to be as follows:
:-
Our improvements relate to plough shares having separate points & wings
and the manner of attaching same to the head separately and are carried out as
follows:-
The point is attached directly to the head of plough with a socket or dovetail
and on the point we form a notch or recess broader towards thin or cutting end
tapering to end of socket into this notch front point of wing fits to protect cutting
edge and prevent roots or other material getting in between the point & wing,
this notch can be formed on both sides so that the point may be reversed at
pleasure. The wing is attached to the head in such a manner that either point or
wing can be renewed and fixed on head separately as required. To allow point
length of socket we make the wing with a notch or piece cut out at front of
landside into which the point fits. The point & wing thus form the entire top
or surface of share continuing with curved line of the mouldboard and both are
fixed on to the head separately and form a plough share with separato point &
wing having a long gradual slope or rise from thin point and giving great
clearance and allowing high cutting wing without rubbing below. By this
construction we make a plough share cheaply, perfect in shape, very strong, the
wearing parts being easily & quickly renewed by an ordinary farm labourer.
Dated this Eighteenth day of April 1895.
GEORGE GRAY.
JOHN GRAY.
Improvements in Plough shares.
We, GEORGE GRAY and JOHN GRAY (of George Gray & Co.) Agricultural
Implement Makers, Uddingston Plough Works, Uddingston by Glasgow, 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:-
Our improvements relate to plough shares having separable points and wings
and the manner of attaching same to the plough head separately and are carried
out as follows:-
The point is attached directly to the head of the plough with a socket (or
dovetail) and on the point we form a notch or recess broader towards the thin
front or cutting end of the point and tapering towards the open end of the socket":
into this notch the front point of the wing fits in order to protect its cutting edge
and prevent roots or other material getting in between the point and wing.
This notch can be on both sides of the point so that it may be reversed at
pleasure. The wing is attached to the plough head in such a manner that either
the point or wing can be renewed and fixed on the head separately as required.
To allow the point a sufficient length of socket we make the wing with a notch
CD071

page_text: or piece cut out at front of landside thereof into which notch the rear end of the
point fits. The point and wing thus united form the entire top or surface of the
plough share, continuing the curved line of the mouldboard and both are fixed on
to the head separately one from the other and form a plough share with
separable point and wing having a long gradual slope or rise from the thin point,
and giving great clearance and a high cutting wing without rubbing below.
By this construction we make a plough share cheaply, perfect in shape also very
strong and light, the wearing parts being easily and quickly renewed by an ordinary
farm labourer.
This invention will be better understood if reference is made to the accompanying
drawings in which :-
Figure 1 is a plan view shewing the point and wing in position with part of the
mould-board of a plough share made in accordance with this invention;
Figure 2.is a view in perspective of a plough head;
Figures 3 3A 3B and 30 are views in perspective giving details of a plough share
point made in accordance with this invention;
Figure 4 is a plan view of a plough share wing or blade made in accordance with
this invention ;
Figure 5 is a sectional view through 5, 6, of Fig. 1.
Similar letters of reference and numerals throughout the drawings indicate
corresponding parts.
Referring to the drawings the plough head A Fig. 2 is made with a tapering
rectangular nose a' and the separable point B, Figs. 3, 3A, 3B, 3º, contains a
tapering sheath or socket 1 corresponding in form and dimensions to the
nose a¹
On the top side of this separable point B a triangular recess, 6 Figs. 1 and 3,
is formed for receiving the foremost end d¹ of the wing or blade D, Figs. 1 and 4.
The shape of the recess is that of an acute angled triangle with its base in or
about mid-centre of the point B and its apex at the rear of it, see 6 Figs. 3, 3^.
The plough head is sometimes made with a nose of dovetail form and a
separable point C, containing a tapering sheath or socket for it of corresponding
dovetail form taper and size as shewn by c¹ Fig. 3: this point C is not a
reversible one.
The wing or blade D Fig. 4 is made with a cut-away recess & shaped so
that the front end d' of the wing fits into the angled recess and the shoulder
part of the wing confronts the rear end of the separable point B, as shewn in
Fig. 1.
The triangular recess 6 is also made on the underside of the point B when
occasion requires, as well as on the top side sce 6 Fig. 3³, so that the point B may
be reversed, turned from top to bottom.
The obliquity of the joint 1, 2, Fig. 1 formed by the wing point d' lying in the
recess 6 acts as a safeguard preventing roots or other objects getting into the said
joint, and as the motion of the plough when in use is always in the direction of the
line 3, 4, the joint 1, 2, is presented diagonally against the soil and the end of it, d³,
at a right angle thereto.
The insertion of the end d within the recess * contributes essentially to the said
safeguard, even more so than the obliquity of the joint 1, 2, Fig. 1: this obliquity
contributes materially to the ease with which the point B (or C) is fitted upon the
head A and removed therefrom without disturbing the wing D.
Although the end of the wing, (d') is fitted closely into the recess 6' the point B
.or C can be easily removed from the nose a¹ as the taper of the nose a¹ and the
oblique line 1, 2, of the wing point d Figs. 1 and 4 exactly correspond.
This separable point, Figs. 3 to 3º, is not screwed or bolted to the plough head
but is forced tightly thereon and can be removed therefrom and replaced without
disturbing the wing or blade D; it constitutes a complete scabbard or sheath for
the nose a¹ and is retained upon the said nose merely by the tightness of its impact
thereon.

page_text: The wing D is adapted for being fixed on the head or removed from it without
disturbing the points, Figs. 3 to 30, and when this point and the wing D arc fitted
upon the plough head their upper surfaces graduate into the line of the mould-
board E, Figs. 1 and 5.
This improved plough share has no "box": the separable point B, 63, 4 or C
is fitted directly upon the plough head and not upon a "box" the wing or
blade D is also fitted directly to and upon the plough head and not upon a
"box,"
being united thereto by such means as the bolt and a pin or screw d'.
We are aware that prior to our invention plough shares have been made wherein
the point and wing are detachable one from the other, also wherein they are united
separately to or upon a box fitted upon a plough "head": it will therefore be
understood that we do not claim the detachability of the point and wing, of a
plough share, one from the other, broadly as our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
First, in a plough share the combination with the head A of a separable point
fitted by impact upon its nose a¹ all substantially as herein described with reference
to B, of the drawings or any mere modification thereof for the purposes
specified.
Second, in a plough share the combination with its head A of a separable
point fitted by impact upon its nose all substantially as herein described with
reference to C, c¹ of the drawings or any mere modification thereof for the purposes
specified.
Third, in a plough share the combination with its head A of a separable point
fitted by impact upon its nose, having a triangular recess 63 all substantially as
herein described and drawn or any mere modification thereof for the purposes
specified.
Fourth, in a plough share the combination therewith of a separable wing or
blade D fitted directly upon the head and adapted to overlay the separable
point B and form therewith a diagonal joint 1, 2, all substantially as herein
described and drawn or any mere modification thereof for the purposes specified.
Fifth, in a plough share the combination therewith of a soparable wing or
blade D fitted directly upon the head and adapted to overlay the separable
point C and form therewith a diagonal joint 1, 2, all substantially as herein
described with reference to the drawings or any mere modification thereof for the
purposes specified.
Sixth, in a plough share the combination therewith of a separable wing or
blade D fitted thereto and adapted to overlay the separable point B and form
therewith a diagonal joint 1, 2, all substantially as herein described with reference
to the drawings or any mere modification thereof for the purposes specified.
Seventh, in a plough share the combination therewith of the separable point B
and overlapping wing D substantially as herein described and drawn or any mere
modification thereof for the purposes specified.
Eighth, in a plough share the combination therewith of the separable point C
and overlapping wing D substantially as herein described and drawn or any mere
modification thereof for the purposes specified.
Dated this Eleventh day of January 1896.
JOSEPH LOCKWOOD,
263 Argyle Street, Glasgow, Agent for the Applicants.
JOSEPH
LOCKWOOD,
263 Argyle Street, Glasgow, Agent for the Applicants.