IMPROVEMENTS IN AGRICULTURAL STEAM ENGINES
Year: 1873

page_text: LETTERS PATENT to Frederick Savage, of Saint Nicholas Iron Works,
King's Lynn, in the County of Norfolk, for the Invention of
"IMPROVEMENTS IN AGRICULTURAL STEAM ENGINES."
Sealed the 20th October 1873, and dated the 12th May 1878.
PROVISIONAL SPECIFICATION left by the said Frederick Savage at
the Office of the Commissioners of Patents, with his Petition, on
the 12th May 1873.
I, FREDERICK SAVAGE, of Saint Nicholas Iron Works, King's Lynn,
in the County of Norfolk, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN AGRICULTURAL STEAM ENGINES," to be as
follows:-
:-
This Invention has for its object improvements in agricultural steam
engines.
In order that agricultural engines may be available for hauling ploughs
or other implements without requiring the aid of separate winding tackle,
as is now usual, I adopt the following method of construction:-The

page_text: main carrying wheels of the engine are geared with the crank shaft, as
is now practiced, with the object of enabling the engine to move and
draw loads from place to place. A chain wheel on the crank shaft, by
means of a pitch chain, drives a countershaft, on which are two pinions,
which each gear with a ring of teeth within one of the main carrying
wheels. I make these wheels so that they can be used as or converted
into winding drums. I apply to them movable tyres, and when tho
engine is to be used for winding these wheels are lifted off the ground,
and the tyres are removed. The wheels are so constructed that they then
appear as flanged drums, and upon these when the engine is set to work
the hauling ropes are wound and unwound alternately. The pinions on
the countershaft can be taken in and out of gear at pleasure, and inde-
pendently the one of the other, and the pinion gearing with one of the
wheels or drums is thrown out so as to allow this drum to run free
whilst the other drum is winding.
SPECIFICATION in pursuance of the conditions of the Letters ratent,
filed by the said Frederick Savage in the Great Seal Patent Office,
on the 11th November 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
SAVAGE, of Saint Nicholas Iron Works, King's Lynn, in the County of
Norfolk, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of May, in the year of our
Lord One thousand cight hundred and seventy-three, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Frederick Savage, Her special license that
I, the said Frederick Savage, my executors, administrators, and assigns,
or such others as I, the said Frederick Savage, my executors, adminis-
trators, 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 AGRI-
CULTURAL STEAM ENGINES," upon the condition (amongst others) that I,

page_text: the said Frederick Savage, my exccutors 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 Inven-
tion, 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
months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Frederick Savage, 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
following statement thereof, that is to say :-
This Invention has for its object improvements in agricultural steam
.engines.
In order that agricultural ongines may be available for hauling ploughs
or other implements without requiring the aid of separate winding tackle,
as is now usual, I adopt the following method of construction: -The
main carrying wheels of the engine are geared with the crank shaft, as is
now practiced, with the object of enabling the engine to move and draw
loads from place to place. A chain wheel on the crank shaft by means
of a pitch chain drives a countershaft, on which are two pinions, which
cach gear with a ring of teeth within one or both of the main carrying
wheels. I make these wheels so that they can be used as or converted into
winding drums. I apply to them movable tyres, and when the engine
is to be used for winding these wheels are lifted off the ground, and the
tyres are removed. The wheels are so constructed that they then appear
as flanged drums, and upon these when the engine is set to work the
hauling ropes are wound and unwound alternately. The pinions on the
countershaft can be taken in 'and out of gear at pleasure, and indepen-
dently the one of the other, and the pinion gearing with one of the
wheels or drums is thrown out so as to allow this drum to run free whilst
the other drum is winding.
In order that my said Invention may be most fully understood, and
readily carried into effect, I will proceed to describe the Drawing here-
unto annexed.

page_text: a is an axis carried in the bearings a¹, fixed to the back of the fire-box
of the engine. This axis has fixed upon it the chain pinion 6, and is
driven by an endless chain passing around the chain pinion, and also
around a chain wheel upon the crank shaft of the engine. c, c, are two
pinions on the axis a; they can be slidden along it into or out of gear
with the rings of teeth d', d, within the main road wheels d, d. These
wheels have tyres d³, d², made in separate segments, and bolted on so
that they are capable of being readily removed. When the tyres of the
wheels are removed their peripheries are of a trough-like form, and
suitable for use as winding drums. Hauling ropes are wound upon
them, and by means of such ropes ploughs and other agricultural imple-
ments may be worked in the same way as when other stationary winding
apparatus is used, and as is well understood. When the engine is used
for winding it is lifted off its wheels by blocks, as is shewn in the
Drawing.
What I claim is, the construction of agricultural engines, with road
wheels, which are also suitable for use as winding drums, substantially
as described.
In witnese whoreof T the said Frederick Savage liava hovcunto set