IMPROVEMENTS IN ENGINES EMPLOYED FOR AGRICULTURAL PURPOSES."
Year: 1856

page_text: LETTERS PATENT to Robert Wilson Chandler, of Bow, in the County of
Middlesex, Engineer, and Thomas Oliver, of Hatfield, in the County
of Hertford, Farmer, for the Invention of "IMPROVEMENTS IN ENGINES
EMPLOYED FOR AGRICULTURAL PURPOSES."
PROVISIONAL SPECIFICATION left by the said Robert Wilson Chandler.
and Thomas Oliver at the Office of the Commissioners of Patents, with
their Petition, on the 25th June 1856.
We, ROBERT WILSON CHANDLER, of Bow, in the County of Middlesex,
Engineer, and THOMAS OLIVER, of Hatfield, in the County of Hertford, Farmer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
ENGINES EMPLOYED FOR AGRICULTURAL PURPOSES," to be as follows:-
Our Invention consists in fixing a drum for holding the band, strap, or
chain employed with engines for ploughing and other agricultural purposes,
upon the axle of the fore or hind wheels of the travelling engines now
employed in connection with agriculture. Or we convert either fore or hind
wheels into drums by raising them, by means of blocks or otherwise, from
contact with the ground, and by screwing, bolting, or otherwise attaching
flanges to the sides of the wheels, in order to prevent the band slipping off
from them.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Wilson Chandler and Thomas Oliver in the Great
Seal Patent Office on the 24th December 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ROBERT
WILSON CHANDLER, of Bow, in the County of Middlesex, Engineer, and
THOMAS OLIVER, of Hatfield, in the County of Hertford, Farmer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the. Twenty-fifth day of June, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
Robert Wilson Chandler and Thomas Oliver, Her special licence that we, the
said Robert Wilson Chandler and Thomas Oliver, our executors, adminis-
trators, and assigns, or such others as we,.the said Robert Wilson Chandler
and Thomas Oliver, our executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after 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 "IMPROVE-
NENTS IN ENGINES EMPLOYED FOR AGRICULTURAL PURPOSES," upon the condition
(amongst others) that we, the said; Robert Wilson Chandler and Thomas
Oliver, or one of us, or rour executors or administrators, by an instrument
in writing under our or their, or one of our or 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 months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Robert Wilson Chandler and Thomas
Oliver, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to the Drawings
hereunto annexed, that is to say:-
Our Invention consists in fixing a drum for holding the band, strap, or
chain employed with engines for ploughing and other agricultural purposes,
upon the axle of the fore or hind wheels of the travelling engines now
employed in connection with agriculture. Or we convert either fore or hind
wheels into drums by raising them, by means of blocks or otherwise, from
contact with the ground, and by screwing, bolting, or otherwise attaching

page_text: flanges to the sides of the wheels, in order to prevent the band slipping off
from them.
Figure 1 is a side elevation of a portable.steam engine, with our improve-
ments applied thereto; Figure 2; an end elevation of the same; and Figure 3,
a plan of the particular parts. to which our improvements are applied, shewn
detatched from the rest of the working part of the engine. Aris/thie.crank
shaft, on which is keyed. or otherwise fixed the beyil.or mitre wheel. B gearing
into the bevil wheel C on the shaft D, which works in bearings a attached
to the bracket E, and fixed to" the body of the engine. "The shaft D.works
in bearings b at its lower end, and has keyed on it: the ibevil wheel F, which
gears into another bevil wheel G running loosely on the shaft H, seen more
clearly at Figure 3. To the wheel G we, cast the pinion, I and clutch c.
This pinion works into the wheel I, to which a similar clutch is cast on the
shaft K; these clutches slide on feathers, and are thrown in and out of gear
by means of forked levers. The pinion L is fixed on the shaft K, and gears
into the wheel M, which is fast on the shaft H. On the shaft H the pinions
N, N, are mounted or fitted, attached to which are grooved bosses "f, f,also
sliding on feathers g, g, spanned by forked. levers for the purpose of throwing
the pinions in and out of gear. The pinions N, N, gear into the wheels O, O,
on the axle P, here shewn attached to the bind wheels of the engine, but it is
equally applicable to the fore wheels. The axle P is made longer than in
engines of the ordinary construction, to allow the rope-winding drums or
pullies Q, Q, which run loose, or otherwise, on the same axle P, to be placed
between the wheels O, O, and the bearing wheels R, R. Round the drums
Q, Q, the ropes or chains S, S, are wound in contrary directions, so that when
one rope is running off one drum, the other rope is running on the other drum.
The rope
S is attached to a plough or any other apparatus for agricultural
purposes, and is guided round suitable pullies placed at the part of the field
required to be ploughed or otherwise operated on. Instead of winding the
rope S round the drum Q, we sometimes fix flanges h, h, shewn in dotted lines,
to the bearing wheels R, R, then elongate the axle P, as shewn by the dotted
lines, and support the whole on-a tressel, as shewn at Figure 4; the ropes are
wound round the wheels R, R, which answer the same purpose as the drums
or pullies Q, Q. The wheels O, O, and drums Q, Q, are cast together or
separately, and fixed afterwards as desired. T, T, are levers connected to the
clutch lever for throwing the pinions I and L in and out of gear, and for this
purpose the lever is raised and pushed along a bar from one notch to another.
We sometimes only use the wheel G and pinions N, N, on the shaft H, and
dispense with the shaft K and its wheels and clutches; when this is the case

page_text: the wheel G is cast without pinion and clutch, and keyed or otherwise fixed to.
the shaft H. U, U, are brakes made of wood or other suitable material, the
pressure of which on the wheels O, O, may be regulated by the lever i. Round
the fly-wheel V we sometimes place a strap, which may drive a thrashing,
chaffing, oat-crushing, or any other machine, as required.
And having now described the nature of our said Invention, and in what.
manner the same is to be performed, we declare that we claim the improve-.
ments in and additions to steam engines employed for agricultural purposes,
herein-before described, and represented in the Drawings hereunto annexed,
together with any equivalent modifications of the same.
In witness whereof, we, the said Robert Wilson Chandler and Thomas
Oliver, have hereunto set our hands and seals, this Twenty-second day
of December, One thousand eight hundred and fifty-six.
ROBERT WILSON CHANDLER. (L.S.)
THOMAS OLIVER.
(L.S.)