Improvements in "Turn-wrest" Ploughs.
Year: 1888

page_text: Improvements in "Turn-wrest" Ploughs.
I, WILLIAM ISAAC of Wrafton Lane, Braunton, in the county of Devon, machinist,
do hereby declare the nature of this invention to be as follows:-
According to this invention the plough is furnished with two wheels only in front
of the coulters instead of, as heretofore, with three or four. One of the said wheels
is designed to run in the furrows and the other on the unploughed soil. The spindle
to which the wheel clips are secured is provided between the plough beams with a
notched bracket, and when the plough is being driven in one direction one end of a
forked pawl pivotted to the beams is engaged with one of the notches of the said
bracket. As the plough is being turned over to be drawn in the reverse direction to
that aforesaid, the spindle to which the bracket is keyed partially rotates and the
pawl drops out of engagement with the notch thereof. The bracket turns with the
plough, and when the plough has been turned over the other end of the forked pawl
takes into another notch of the bracket.
By this means the wheels are locked whenever the plough is turned over and are
always kept below the frame.
By the use of two wheels only the plough is simplified in construction and the
draught lightened.
Dated this 20th day of March 1888.
NICHOLAS WATTS,
Applicant's Agent.

page_text: Improvements in "Turn-wrest” Ploughs.
1, WILLIAM ISAAC of Wrafton Lane, Braunton, in the County of Devon, machinist,
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:
According to this invention the plough is furnished with two wheels only in front
of the coulters instead of, as heretofore, with three or four. One of the said wheels is
designed to run in the furrows and the other on the unploughed soil. The spindle to
which the wheel clips are secured is provided between the plough beams with a
notched bracket, and when the plough is being driven in one direction, one end of a
forked pawl pivotted to the beams is engaged with one of the notches of the said
bracket.
As the plough is being turned over to be drawn in the reverse direction to that
aforesaid, the spindle to which the bracket is keyed is partially rotated and the pawl
drops out of engagement with the notch thereof.
The bracket turns with the spindle and when the plough has been turned over
the other end of the forked pawl engages with a notch on the opposite side of the
bracket.
Consequently, the wheels are locked whenever the plough is turned over and are
always kept below the frame.
By the use of two wheels only at the front the plough is simplified in construction
and the draught lightened.
Referring to the accompanying sheet of drawings, Fig. 1 represents a side
elevation of a plough constructed in accordance with this invention. Fig. 2 is a
part plan.
At the front the plough is fitted with two wheels a and b the former being the
furrow wheel and the latter the "land 1" wheel. The spindle e to which the clips of
the wheels a and b are secured is fitted between the beams d of the plough with a
notched bracket e shown more particularly at an enlarged scale at Fig. 3.
Extending longitudinally at each side of the notched part e¹ are the projections e² e³.
When ploughing in one direction, the extension e bears upon the beam of the
plough and the pawlf engages with one of the notches, as seen at Fig. 1.
When the end of a furrow is reached the plough is turned over in the manner usual
in such ploughs. The spindle c makes half a revolution and carries the bracket e
with it. The pawl f drops out of engagement with the notch and when the bracket
is fully reversed the other limb of the pawl engages with the opposite notch of the
bracket the extension of which bears upon the other, now the upper, side of the
beam d. Hence the wheels a and b are locked by the pawl fimmediately after
the plough is turned over, and are always kept below the frame.
By the use of two wheels only at the front the plough is simplified in construction
and the draught lightened.

page_text: 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 improved turn-wrest plough having at the front two wheels only, viz.: a
furrow wheel and a "land" wheel, as herein before described.
"
2. In a turn-wrest plough, the provision of the notched bracket e, and forked
pivotted pawl for locking the wheels a and b after each "turn over or reversal of
the plough, arranged and operating substantially as hereinbefore described with
reference to the accompanying drawings.
Dated this 19th day of December 1888
NICHOLAS WATTS,
Applicant's Agent.