Year: 1886

page_text: We, DAVID GREIG of the Steam Plough Works Leeds in the County of York
Engineer and THOMAS BENSTEAD of the Steam Plough Works Leeds Engineer
do hereby declare the nature of this invention to be as follows:—
This improvement consists in so constructing the frames of balance ploughs, that
when one set of ploughs are set into work, the centre upon which the frame is
pivotted is pulled forward out of the centre of the frame, and shortens the length
of the frame which is out of work. By these means a greater weight is brought
to bear upon the ploughs at work and consequently the ploughs will adhere more
regularly to their work and give a more even surface to the bottom of the furrow.
When the plough reaches the end of the "bout," the engine at the opposite end of
the field commences to pull the plough into work for the return journey. The
centre shaft on which the plough frame is hinged is then pulled into the centre
position on the frame, and the opposite end of the plough to that which has been
at work is then set into the ground and the pull of the rope brings the centre
shaft out of the centre of the plough as far as it can go. The extra weight as
described above is now brought on to the ploughs working the return journey.
Dated this 18th day of Mount 1000
CARPMAEL & Co.,
Agents for the Applicants.

page_text: We, DAVID GREIG of the Steam Plough Works Leeds in the County of York
Engineer and THOMAS BENSTEAD of the Steam Plough Works Leeds Engineer
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 :-
This Invention consists in so constructing balance ploughs that when one set of
ploughs are set into work the centre upon which the plough beam is pivotted is
pulled forward out of the centre of the beam and so shortens the length of the
beam which is out of work. By these means a greater weight is brought to bear
upon the ploughs at work and consequently the ploughs will adhere more regularly
to their work and give a more even surface to the bottom of the furrow.
The drawings hereunto annexed show various views of the central portion of a
double balance plough constructed to act in this manner.
Figure 1 is a side elevation partly in section, Figure 2 a plan view and
Figure 3 a vertical cross section. Figure 4 is a vertical longitudinal section
showing the plough beam in its central position passing from one of its working
positions to the other. In this figure the chains are represented by dotted lines.
A is the plough beam at its centre it has secured to it on each side a plate B.
C is the bar or axis upon which the plough beam is pivotted it passes through
slots B' formed in the plate B. D is a loose sleeve embracing the bar C and
capable of turning around it. On the sleeve D are fixed two toothed pinions E.
One gears with a toothed rack B2 on one side plate B and the other with a
toothed rack B' on the other side plate. On the sleeve D at its centre is also fixed
a drum F. Two chains are led partly around this drum-one chain G is fixed to one
arm of the plough beam at Q and is then led over the top of and around the drum
and then back again and secured to one of the hauling ropes I. The other chain H
is fixed at H¹ to the other arm of the plough beam and is similarly led over the top
of the drum and back again to the other hauling rope J. Rings G³ H³ forming
part of the two chains G and H are also coupled together by a few links of
chain K.
In Figures 1 and 2 the rope I is shown to be acting as the hauling rope and
draws the plough forward from the point G¹ through a portion of each chain G
and H and through the few links K which couple them together. When the
plough reaches the end of the "bout" the engine at the opposite end of the field
commences to pull the plough into work for the return journey. The shaft C is
thereby pulled towards the centre of the plough beam A and the opposite end of
the plough to that which has been at work is then set into the ground and the
pull of the rope brings the shaft C past the centre of the beam until it commences
to haul the whole implement forward from the point H¹ through part of each
chain G and H and through the few links K. The pinions and racks ensure that
the shaft C shall always stand across the beam at right angles to its length.
The shaft or bar C is supported by the two main wheels in the following
manner. The short axles of the two main wheels project from blocks L mounted
1

page_text: on vertical spindles M at the two ends of a vertical rectangular frame the lower
bar of which is the bar C.
The blocks L can be raised or lowered on the spindles M by screws N so that
the height at which the shaft or bar C is carried from the ground can be adjusted
as desired.
An arm O, on the one spindle M is also coupled to an arm O on the other
spindle M, and the steering of the implement is effected in the ordinary manner.
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. A balance plough in which the bar or shaft upon which the plough beam is
pivotted is drawn forwards past the centre of the beam in whichever direction the
implement is being drawn.
2. The construction of balance ploughs substantially in the manner herein
before described and illustrated in the drawing annexed.