IMPROVEMENTS IN AGRICULTURAL ELEVATORS OR STACKING MACHINES'
Year: 1882

page_text: LETTERS PATENT to Richard Wilder, James Wilder and Henry Wilder, all
of Wallingford, in the county of Berks, Engineers, for an Invention of
"IMPROVEMENTS IN AGRICULTURAL ELEVATORS OR STACKING MACHINES'
"
PROVISIONAL SPECIFICATION left by the said Richard Wilder, James
Wilder, and Henry Wilder at the Office of the Commissioners of Patents on
the 1st July 1882.
RICHARD WILDER, JAMES WILDER and HENRY WILDER all of Wallingford in the
county of Berks Engineers IMPROVEMENTS IN AGRICULTURAL ELEVATORS OR
STACKING MACHINES
"
This invention relates to apparatus for elevating hay straw or similar produce
for stacking and like purposes.
We mount our elevator carriage on two pairs of wheels, the front pair swivelling
as usual. The hind ones can also swivel or be locked in a line with the carriage
by chains or otherwise.
The hind or hopper part of the elevator carriage or frame is mounted on a central
upright which carries a double geared wheel mounted loosely upon it into which
work two shafts, the upper one being connected with or fixed on the carriage, the
lower one being connected with or fixed on the hind axle, thereby enabling the
hind axle bed to be always placed in a parallel position with a thrashing machine
whether the elevator is placed at a right or any other angle, thus obviating the
necessity of angular pulleys on the thrashing machine.
The two fulcra or levers are attached to the sides of the carriage or frame each
working on a central pin, and are raised into position and lowered by means of
chains worked by a chain pinion and pair of wheels or otherwise. As in working
the chain it varies in length and a certain amount of slack chain requires to be
taken up, we provide for this by placing spiral springs or other suitable springs at
each end of the chain.
To enable both levers to work at the same time the chain pinions are keyed on
one shaft.

page_text: The method we prefer to adopt for raising the trough and unfolding and folding
the same is by means of a hemp, wire, or other suitable rope, the ropes being
attached to two winding drums carried on a spindle or shaft running in bearings on
the frame or carriage and driven by gearing. The ropes are passed over pulleys
at the ends of the levers or fulcra and hooked to the required position on the trough
for unfolding or folding, raising, or lowering. Two pulleys are placed at the upper
ends of the levers one above the other, the rope working between the same.
In
folding the elevator trough, when the levers are placed in their proper position and
the upper part of the trough is wound just beyond the perpendicular, the upper
pulleys catch the ropes thereby enabling the trough to be folded in an easy and
simple manner.
Side strain of the fulcra or levers is prevented by iron girders having holes for
removable pins which hold the levers firmly while in the act of raising or lowering,
thereby taking off all strain from the chains.
We can work an elevator from a thrashing machine, horse or other gear, and it is
obvious that the mere mechanical details of our invention may be varied without
departure from the essential features.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Richard Wilder, James Wilder, and Henry Wilder in the Great
Seal Patent Office on the 18th December 1882.
RICHARD WILDER, JAMES WILDER and HENRY WILDER, all of Wallingford
in the county of Berks Engineers IMPROVEMENTS IN AGRICULTURAL ELEVATORS
OR STACKING MACHINES
This invention relates to apparatus for elevating hay, straw or similar produce
for stacking and like purposes
We mount our elevator carriage on two paira of wheels, the front pair swivelling
as usual. The hind ones can also swivel or be locked in a line with the carriage
by chains or otherwise.
The bind or hopper part of the elevator carriage or frame is mounted on a central
upright which carries a bevel geared wheel mounted loosely upon it into which
work two shafts, the upper one being connected with or fixed on the carriage, the
lower one being connected with or fixed on the hind axle thereby enabling the
hind axle bed to be always placed in a parallel position with a thrashing machine,
whether the elevator is placed at a right or any other angle, thus obviating the
necessity of angular pulleys on the thrashing machine.
The two fulcra or levers are attached to the sides of the carriage or frame each
working on a central pin, and are raised into position and lowered by means of
chains worked by a chain pinion and pair of wheels, or otherwise. As in working
the chain it varies in length and a certain amount of slack chain requires to be
taken up, we provide for this by placing spiral springs or other suitable springs
at each end of the chain. To enable both levers to work at the same time the
chain pinions are keyed on one shaft.
The method we prefer to adopt for raising the trough and unfolding and folding
the same is by means of a hemp, wire or other suitable rope or chain, the ropes or
chains being attached to two winding drums carried on a spindle or shaft running
in bearings on the frame or carriage and driven by gearing. The ropes or chains
are passed over pulleys at the ends of the levers or fulcra and hooked to the
required position on the trough for unfolding or folding, raising or lowering. Two
pulleys are placed at the upper ends of the levers, one above the other, the rope or
chain. working between the same. In folding the elevator trough, when the levers
are placed in their proper position and the upper part of the trough is wound just
beyond the perpendicular, the upper pulleys catch the ropes or chains, thereby
enabling the trough to be folded in an easy and simple manner. Side strain of the
fulcra or levers is prevented by iron guides having holes for removeable pins which
hold the levers firmly while in the act of raising or lowering, thereby taking off all
strain from the chains.
We can work our elevator from a thrashing machine, horse or other gear, and it
is obvious that the mere mechanical details may be varied without departing from
the essential features.
-
In the accompanying Drawings,
Fig. 1 is an end view of the elevator,
Fig. 2 a side elevation of the same.
A represents the hind axle of the elevator pivoted on pin or shaft B carrying
bevel wheel C. D is the shaft carrying a bevel pinion carried on the axle by
brackets, as shewn. E is the corresponding shaft carried on the frame of the
elevator.
Twill thus be seen that this arrancament allows the elevator to be driven at

page_text: various angles dispensing with the necessity of angular pullies on the thrashing
machine
FF' are the levers or fulcra mounted on pins G and supported by the guides H
which take off the strain. I I¹ are the elevator troughs, shown lowered and
folded. The levers Fare raised and lowered by chains J J passing over sprockets K.
mounted on shaft of spur wheel L driven by pinion M. To take up slack chain
we attach the chains (as mentioned above) to springs N N', N N¹, as shown.
O O are the superposed pulleys on the levers over which the hoisting ropes or
chains P P pass. The ends of the chain are attached to drums Q mounted on one
shaft carrying spur wheel R driven by pinion S. The other ends of ropes or
chains P P are shown hooked on the trough at T. To tighten the rake chains U
we prefer to use a sliding tubular rod V on each side of the upper part of the
trough.
W W show the drums over which the rake chains pass. X X¹ are the
guide pulleys for the chains. Y is the tailboard of the elevator. Z Z¹ the driving
pulleys.
We make the rake heads of our elevator of either tubular or angle iron. If
desired, we may use a double geared wheel instead of a single one, as shown at C,
that is if the axle should have to be turned completely round. The arrangement
of two shafts gearing with the bevel wheel allows of great facility in driving at i
⚫ any angle.
We are aware that it has been before proposed to drive elevators at angles with
the thrashing machine by pivoting the driving mechanism, and we do not lay
claim to this principle, neither do we lay claim to the mere construction of the
troughs or general frame of the machine, but we would have it understood that we i
claim as our improvements in agricultural elevators or stacking machines.
Firstly: The combination with the toothed wheel O mounted on the pivot B of
the hind axle A, of the shaft D gearing therewith and with the shaft E carried by
the elevator frame and also gearing therewith, substantially as and for the purposes
described.
Secondly: Providing the chains for raising the levers or fulcra with springs N N¹
for taking up the slack, substantially as described.
Thirdly: In combination with the levers or fulcra F F the superposed pulleys 00¹
for nipping or holding the chains or ropes when folding the troughs, substantially
as described.
In witness whereof, we, the said Richard Wilder, James Wilder and Henry
Wilder have hereunto set our hands and seals this fifteenth day of December
in the year of Our Lord one thousand eight hundred and eighty two.