Improvements in Folding Broadcast Sowing Machines.
Year: 1894

page_text: Date of Application, 6th Mar., 1894
'Complete Specification Left, 6th Dec., 1894-Accepted, 16th Feb., 1895
PROVISIONAL SPECIFICATION.
Improvements in Folding Broadcast Sowing Machines.
1, ROBERT GLEGG GARVIE of the Firm of Robert G. Garvie & Co.,
Agricultural Implement Makers Hardgate Iron Works in the City of Aberdeen
do hereby declare the nature of this invention to be as follows:-
This invention has for its object to simplify and improve the construction of
broadcast seed and manure sowing machines of the class in which the seed boxes
are fitted to fold or turn on approximately vertical axes on the wheel frame of the
machine so that whilst occupying when in use a position in a line over the wheel
axle they can be folded or turned to be in line one with each tram or shaft
alongside the horse for convenience of transport in narrow roads or through
gateways.
Under the invention instead of driving the shafts carrying the seed distributing
wheels or discs within the seed boxes each by separate gearing from the road
wheels of the machine, and which necessitates cutting through the boxes and
shutting bars I drive the shafts in both boxes by a single set of gearing from the
wheel axle which is fitted to turn with the road wheels. A spur wheel is keyed
on the wheel axle at about its mid length and gears either direct or as is preferred
through a pinion carried on a cross rail of the machine frame with a pinion fitted
at the rear or inner end of the shaft in each seed box. The teeth of the spur
wheel or pinion are made of extra breadth so that they may engage and gear
simultaneously with both pinions driving the seed wheel shafts when the seed
boxes are swung into line across the machine frame. On this cross casting a
recess is formed into which a snug on the box end slips keeping it at once in its
proper position while the seed box is fixed securely by a slipping bolt also fixed to
the cross casting. The driving wheels being at the meeting ends of the seed
boxes cutting of the bottom boards and shutting bars of the boxes is unnecessary
whilst the driving gear is not only simplified and lightened but being out of the
way under the machine frame is not liable to be clogged by soil lifted by the
road wheels. The road axle also being in one piece having collars at the extreme
ends binds the framing together and prevents the frame of the machine going on
end when sowing in sloping land. Another advantage of this arrangement is that
when the boxes are placed alongside the shafts they are in such a position as to
balance the machine perfectly.
Dated this 5th day of March 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Folding Broadcast Sowing Machines.
I, ROBERT GLEGG GARVIE, of the Firm of Robert G. Garvie & Co.,
Agricultural Implement Makers, Hardgate Iron Works, in the City of Aberdeen,
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 has for its object to simplify and improve the construction of

page_text: broadcast seed and manure sowing machines of the class in which the seed boxes
are fitted to fold or turn on approximately vertical axes on the wheel frame of
the machine so that whilst occupying when in use a position in a line over the
wheel axle they can be folded or turned to be in line one with each tram or shaft
alongside the horse for convenience of transport in narrow roads or through
gateways.
The invention is illustrated by the accompanying drawings in back elevation of
the sowing machine at Figure 1, in plan at Figure 2, in longitudinal section at
Figure 3, in side elevation at Figure 4 and in detail at Figures 5, 6 and 7.
Instead of driving the shafts carrying the seed distributing wheels or discs
within the seed boxes each by separate gearing from the road wheels of the machine
as is commonly done and which necessitates cutting through the boxes and shutting
bars, I drive the shafts in both boxes by a single set of gearing from the wheel
axle which is fitted to turn with the road wheels. To that end a spur wheel A is
keyed on the wheel axle B at about its mid length and gears either direct or as is
preferred through a pinion C carried on a cross rail or casting D of the machine
frame with a pinion E fitted at the rear or inner end of the shaft F carrying the
seed distributing wheels F¹ in each seed box G. The teeth of the spur wheel or
pinion C are made of extra breadth so that they may engage and gear
simultaneously with both pinions E driving the seed wheel shafts when the seed
boxes are swung into line across the machine frame H. On the cross casting D
a recess I shewn particularly at Figures 6 and 7 is formed into which a snug Jon
the box end slips keeping it at once in its proper position, while the seed box G
is fixed securely by a slipping bolt K also fixed to the cross casting, or the boxes
may be fixed by a spring or spring catch. The driving wheels E being at the
meeting ends of the seed boxes, cutting of the bottom boards and shutting bars
of the boxes G is unnecessary, whilst the driving gear is not only simplified and
lightened but being out of the way under the machine frame H is not liable to be
clogged by soil lifted by the road wheels L. The road axle B also being in one
piece having collars M at the extreme ends binds the framing H together and
prevents the frame of the machine going on end when sowing in sloping land.
Another advantage of this arrangement is that when the boxes G are placed
alongside the shafts they are in such a position as to balance the machine
perfectly. This is due to the position and form of the swivelling brackets N
which when the boxes G are turned throw a due proportion of the weight of
the boxes to the front and rear of the axle B.
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. A folding broad-cast sowing machine the parts of which are constructed
combined and operated substantially as described with reference to the annexed
drawings.
2. In a folding broad-cast sowing machine the construction and arrangement of
the driving gear for operating the seed distributing wheel shafts in the seed boxes
substantially as and for the purpose set forth.
Dated this 5th day of December 1894.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62, St. Vincent Street, Glasgow, Agent for the Applicaut.