IMPROVEMENTS IN ELEVATORS; FOR
Year: 1870

page_text: LETTERS PATENT to Stephen Lewin, of Poole, in the County of Dorset,
Engineer, for the Invention of "IMPROVEMENTS IN ELEVATORS; FOR
PROVISIONAL SPECIFICATION left by the said Stephen Lewin at tho
Office of the Commissioners of Patents, with his Petition, on the
27th January 1870.
I, STEPHEN LEWIN, of Poole, in the County of Dorset, Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
ELEVATORS FOR RAISING. AND STACKING STRAW, HAY, AND OTHER SIMILAR
SUBSTANCES," to be as follows:—
My improvements in elevators consist, firstly, in providing under-
neath the main trough of the elevator a second trough, through which
the straw or sheaf carriers after turning over the top roller are made
to pass in their downward passage, whereby the said carriers are pre-
vented from drawing the sheaf or straw down again.

page_text: Another improvement consists in providing the main trough with
a joint at or about the middle of its length, so that the upper part
can be folded down over the lower part and thus the elevator be rendered
more compact for transport. When opened out the joint of the trough
is held secure by a catch or other fastening.
Another improvement has reference to the mode of raising and
lowering the main poles and trough and the mode of connecting the
former to the latter. The main poles are stayed or trussed at the sides
by means of tension rods, and are arranged to turn at or near their
lower ends upon pins fixed to uprights carried by the framing. To
the lower ends of the poles are fixed toothed wheels or quadrants, in
gear with which are pinions actuated through suitable power increasing
gearing by means of winch handles. The upper ends of the poles (which
arc attached together by a transverse bar or rod) are connected in such
a manner to the upper end of the trough, either by means of rails on
the sides of the latter fitting between antifriction rollers fixed to the
former, or by other suitable known sliding connections, that the poles
in being raised by the before mentioned gearing raise up the upper end
of the trough and at the same time slide along the rails or other con-
trivance fixed thereto. By this means cither the entire trough may
be raised or lowered to any angle, or the upper part may be turned
over on to the lower part by the before mentioned hinged joint.
Another improvement consists in providing antifriction rollers in
the main trough for the chains of the carriers to pass over in order to
prevent the carriers from rubbing against the guides to such an extent
as is at present the case.
Another improvement consists in providing the front incline trough
with endless chains travelling over wheels in order to provent the straw
or hay from lodging either at the sides or the end of the receiver.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of January, in the
year of our Lord One thousand cight hundred and seventy, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Stephen Lewin, Her special licence
that I, the said Stephen Lewin, my executors, administrators,. and.
assigns, or such others as: I, the said Stephen Lewin, my executors,.
administrators, and assigns, should at any time agree with, and no.
others, from time to time and at all times. thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN ELEVATORS FOR RAISING AND STACKING STRAW, HAY, AND OTHER SIMILAR
SUBSTANCES," upon the condition (amongst others) that I, the said.
5 Stephen Lewin, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar
O months next and immediately after the date of the said Letters
Patent..
NOW KNOW YE, that I, the said Stephen Lewin, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
5 following statement thereof, reference being had to the accompanying
Sheet of Drawings, and to the figures and letters marked thereon,
that is to say :—
My improvements in elevators consist, firstly, in providing under-
neath the main trough of the elevator a second trough, through which
the straw or sheaf carriers after turning over the top roller are made
to pass in their downward passage, whereby the said carriers are prevented
from drawing the sheaf or straw down again.
Another improvement consists in providing the main trough with a
joint at or about the middle of its length, so that the upper part can
5 be folded down over the lower part and thus the elevator be rendered
more compact for transport. When opened out the joint of the trough
is held secure by a catch or other fastening.

page_text: gear
Another improvement has reference to the mode of raising and
lowering the main poles and trough and the mode of connecting the
former to the latter. The main poles are stayed or trussed at the
sides by means of tension rods, and are arranged to turn at or near
their lower ends upon pins fixed to uprights carried by the framing.
To the lower ends of the poles are fixed toothed wheels or quadrants,
in with which are pinions actuated through suitable power increasing
-gearing by means of winch handles. The upper ends of the poles (which
are attached together by a transverse bar or rod) are connected in
such a manner to the upper end of the trough, either by means of rails 1
on the sides of the latter fitting between antifriction rollers fixed to
the former or by other suitable known sliding connections, that the
poles in being raised by the before mentioned gearing raise up the
upper end of the trough and at the same time slide along the rails
or other contrivance fixed thereto. By this means either the entire 1
trough may be raised or lowered to any angle or the upper part may
be turned ovar on to the lower part by the before mentioned hinged
joint.
Another improvement consists in providing antifriction rollers in
the main trough for the chains of the carriers to pass over in order to
prevent the carriers from rubbing against the guides to such an extent as
is at present the case.
Another improvement consists in providing the front incline trough
with endless chains travelling over wheels in order to prevent the straw
or hay from lodging cither at the sides or the end of the receiver.
On the accompanying Drawing is shewn the construction of an elevator
with my before described improvements applied thereto.
Figure 1 shews a side elevation, Figure 2 shows a plan, and Figure 3
shows an end elevation of the same.
The main trough A, A' is divided in its length at a, the two parts
being connected together by hinges B at the top of the trough so that
the upper part A' of the trough can be turned over on to the lower
part A, as shewn in dotted lines in Figure 1. When opened out the
two parts of the trough are secured in that position by links or catches C
underneath. Beneath the upper part A¹ of the trough is fixed a second
trough or shoot D, through which the carrier chains E on passing over
the pulleys F after having deposited the straw raised by the carriers
descend, thus preventing such straw from being dragged down again.

page_text: "
The main trough A A', turns as usual upon a fixed axis at its lower
end, and is raised or lowered into any desired position by means of the
supports or poles G turning at their lower ends on strong pins Ḥ fixed
to the uprights I of the carriage F, the upper ends of which poles are
connected to the part A¹ of the trough by fitting with antifriction
rollers K, K', against angle iron rails L fixed to the side of the trough,
the rails being made to pass between the upper rollers K and the lower.
onc K. These rollers are carried by checks M. capable of turning
upon a rod N which tics the two poles Ġ together, and it will be seen
that as the poles are raised into the position shewn in dotted blue lines
the rollers K, K', while raising the trough pass down along the side
rails L and at the same time turn with the cheeks M upon the tic
rod N. The trough may by this means cither be raised into any desired
position, or the part A' may thereby be turned right over on to A as
before mentioned. For effecting the raising and lowering of the poles
these have fixed thereto toothed wheels O, in gear with which is suitable
power increasing gearing P turned by. winch handles Q. The poles
are stayed laterally by means of tension rods R secured to the sides of
the toothed wheels O, as shewn in Figure 1. The front incline or feed
trough S is also provided with endless travelling chains T passing round
pulleys U at the top of the trough and round other pulleys on the same
shaft V that carries the pulleys of the carrier chains to the main trough
and which is driven by the pulley and belt W. X, X, are antifriction
rollers provided in the trough A, A', over which the chains of the carriers
pass as before mentioned.
Having thus described the nature of my Invention, and in what
manner the same is to be performed, I wish it to be understood that I
do not limit myself to the precise combination of the several parts thereof
as shewn on the accompanying Drawing, as the several improvements
are capable of being used independently of such combination, but what
I claim is,―
First. Providing underneath the main trough a second trough down
which the carrier chains pass, substantially as and for the purposes
set forth.
Second. Jointing the main trough at or about the middle of its
length so that the upper part can be turned over on to the lower part,
substantially as described.

page_text: Third. Effecting the raising and lowering of the main poles or sup-
ports and trough by means of toothed wheels fixed to the poles driven
by suitablo gearing from a winch handle, the poles being connected to
the trough by a sliding connection, and being made to turn on pins
carried by the framing, substantially as described.
Fourth. Providing antifriction rollers in the main trough for the
carrier chains to pass over.
Fifth. Providing the front incline trough with travelling chains for
the purposes set forth.
In witness whereof, I, the said Stephen Lewin, have hereunto set :
my hand and scal, this Twenty-seventh day of June, in the year
of our Lord One thousand eight hundred and seventy.
STEPHEN LEWIN. (L.S.)