Improvements in Turn-wrest Ploughs.
Year: 1894

page_text: Date of Application, 12th June, 1894
Complete Specification Left, 11th Mar., 1895-Accepted, 8th June, 1895
Improvements in Turn-wrest Ploughs.
I, RICHARD BAWDEN, Machinist of Star Plough Works, South Molton, Devon
do hereby declare the nature of this invention to be as follows:-
The beam or main frame of plough is a tube.
Projecting from tube is a circular disc or ring fitted with slot holes & set pins
for the purpose of attachment & adjusting bodies, mould boards, shares &c. of
plough. At or near the fore end of tubular beam is a cross tube for the purpose
of admitting a revolving shaft to which land & furrow wheels are attached. For
the purpose of locking or keeping in position, the said land & furrow wheels, when
either right or left ploughs are at work, I employ a rod passing through the main
tube. The end of which rod is inserted in hole or holes made in revolving shaft &
kept in this position whilst at work, by a spring or other suitable means. The
wheels are released by the same movement that is employed for releasing the
handles when plough is being reversed for right or left ploughing.
Dated this 11th day of June 1894.
RICHARD BAWDEN.
Improvements in Turn-wrest Ploughs.
I, RICHARD BAWDEN, Machinist of Star Plough Works, South Molton, Devon,
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:-
fi
"
This invention refers to the description of ploughs known as turn-wrest
ploughs which carry a double set of fittings, one right-hand and the other left-hand,
so that either can be brought into use as required, and a right hand or left hand
furrow formed as preferred.
My improved "turn-wrest" plough is distinguished by four special features,
namely (1) that the main beam or frame is one casting, from the head to the
hinder part of the handle-bracket; (2) that the locking arrangement by which the
handles are both locked, is operated by one movement, and is released by one
lever; (3) that the bodies and their fittings are attached adjustably to an annular
bar or plate which forms part of the main beam; and (4) that the tubular beam is
continued beyond the flanged coupling piece or handle bracket to which the
handles are attached, so that the said handle bracket can revolve thereon when
the bolt that connects it to the beam is withdrawn.
I will now describe the invention with reference to the accompanying drawings
in which
Fig. 1 shows a perspective view of the main beam of my plough with its various
attachments.
Fig. 2 shows a perspective view of the handle bracket.
Fig. 3 shows a plan view of Fig. 1 on a reduced scale.

page_text: Fig. 4 shows a side elevation of the lever and locking bar for keep the front
wheel axle in place.
a, is the main beam which is made hollow for the greater part of its length to
receive the locking bar d.
, is the axle supporting the front wheels (land' and' furrow). This axle is
pierced to receive the end of the locking bar d.
C, is a tubular boss supporting the axle b.
d, is the locking bar which runs through nearly the whole length of the beam a,
for keeping the axle b, in its place until the locking bar d, is drawn back by the
action of lever n, upon which b,.can be turned from right to left, according to the
kind of ploughing required. e, is the coulter har boss. f, is a vertical annular
plate with lugs f, to which are attached the shares, mould-boards and other
fittings. In this plate f, a recess g, is formed by uncovering the tube a, to receive
a spiral spring, placed around the locking bar d, and which serves to return. same
to its original position after being operated by the lever n. k, k', are flanges
placed, one on beam a, and the other on handle bracket 1, which can be connected
together by locking pin m, and thus holding 1, in its proper place on beam a.. 1, is
the handle bracket to the side plates q, of which the handles of the plough are
attached. n, is a short cross-piece or lever connecting the locking pin m, and
bar d, and enabling them to be operated simultaneously by lever. p. o, is a link
pivotted at oue end to the bottom of the lever handle p, and connected at the
other end to the cross-piece n. P, is a long lever fulcrummed at p', which when
pushed to the right as shewn (Fig. 4) draws back the locking bar and pin d, m,
thus permitting the front wheels, shares and coulters to be transposed. 9, 9, are
the side plates to receive the guide handles.
The socket e¹ receives a bar to which is attached a wheel serving as a rest when
turning the plough.
The mode of working my improved plough differs from ordinary ploughs in
the mode of changing the furrow from left to right or the reverse, which is
effected by drawing back lever p, thereby withdrawing the bolts d, and m, and
then proceeding to transpose the shares and wheels in the usual way.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1.). In a turn-wrest plough, the main beam a, cast in one piece with its annular
plate f, Hange k, sockets e, e¹, cross-tube c, locking rod d, and recess g, as herein
described and set forth.
(2.) In a turn-wrest plough the improved locking arrangement p, o, m; n, h,,d,
by means of which the handles and wheels are fastened and unfastened by one
movement, as herein described and set forth.
(3.) In a turn-wrest plough, the general arrangement and combination of parts
as herein described and set forth.
Dated this 11th day of March 1895.
S. S.. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.