IMPROVEMENTS IN CHAIN AND OTHER HARROWS AND APPARATUS OR MACHINERY CONNECTED THEREWITH.
Year: 1868

page_text: LETTERS PATENT to-Henry Denton, of Wolverhampton,.in the County
of Stafford, Agricultural. Implement Maker, for the Invention of
"IMPROVEMENTS IN CHAIN AND OTHER HARROWS AND APPARATUS OR MACHINERY
CONNECTED THEREWITH..'
Sealed: the 4th June 1869,.and dated tlie 5th December 1868..
PROVISIONAL SPECIFICATION left by the said Henry Denton at tlie
Office of the Commissioners of Patents, with his Petition, on the
5th December 1868.
I, HENRY DENTON,. of Wolverhampton,. in the County of Stafford,.
Agricultural Implement Maker, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN CHAIN AND OTHER HARROWS, AND
APPARATUS OR MACHINERY CONNECTED. THEREWITH," to be as follows, that is
to say:-
I mount upon a pair of travelling wheels a. frame and pair of shafts..
Upon or near the axle of the wheels I fit a barrel or other suitable

page_text: appliance, which is made to revolve by being thrown into gear with
one or both of the travelling wheels. To this barrel the chain or other
jointed harrow is attached, so that the whole or any portion thereof
can be wound upon it. By this arrangement more or less harrow can
be let out as the work may require, and when not in use, the whole 5
of the harrow being wound upon the drum or axle, the latter and the
wheels form a carriage for it.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Denton in the Great Seal Patent Office on
the 5th June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
DENTON, of Wolverhampton, in the County of Stafford, Agricultural
Implement Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of December, in the year of our
Lord One thousand eight hundred and sixty-eight, in the thirty-second
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Henry Denton, Her special licence that I, the said
Henry Denton, my executors, administrators, and assigns, or such others
as I, the said Henry Denton, 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, excrcise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN CHAIN AND OTHER HARROWS, AND APPARATUS OR MACHINERY
CONNECTED THEREWITH," upon the condition (amongst others) that I, the said
Henry Denton, my exccutors or administrators, by an instrument in
writing under my, or their, or one of their hands and scals, 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 I, the said Henry Denton, do hereby declare
the nature of my said Invention, and in what manner the same is to

page_text: be performed, to be particularly described and ascertained in and by the
following statement:-
The improvements which constitute this Invention relate to all chain
and other jointed harrows the parts of which are linked, hooked, joined,
or coupled together in chain or link like form. Upon a pair of travelling
wheels I mount a frame and pole, or a pair of horse shafts. Upon the
axle of the said wheels, or upon a transverse shaft parallel with the said
axle, I fix or fit a barrel or drum to rotate with the said axle or to run
loose upon the parallel shaft, which barrel or drum is made to revolve
by a clutch coupling or gearing connecting it with one or both of the
travelling wheels. A stop plate or slide is also provided for fixing the
drum in position, which is formed and operates as herein-after described.
To this barrel or drum one end of the chain or jointed harrow is attached,
so that the whole or any portion thercof can be wound up as required.
By this arrangement of the apparatus or machinery more or less length
of harrow can be let out, as the varying nature of the work to be per-
formed thereby may require; and when not in use the whole of the
harrow can be wound up on the drum clear of the ground altogether;
the drum and frame with its travelling wheels forming a carriage for
the harrow, by which it can be transported from place to place along
hard roads or other like surfaces without wearing away the sharp anglos
of the links or otherwise injuring the implement. For fixing the drum
in position when the harrow is thus wound up, or when the required
length of chain, links, or joints is let out, I make the axle of sufficient
length to pass through and project at one or both ends, from or in front
of the outer face of the bracket or lower portion of the frame in which
the bearings of the axle of the travelling wheels are formed; this
projecting portion of the said axle I make square, and fit the bracket
with a slide or rising and falling lock plate, which works in a groove in
the said bracket, and is formed with a rectangular notch or mouth at
its extremity, similar to a square-mouthed spanner; by sliding or letting
down this plate the notch or mouth passes over or embraces the square
end of the axle before mentioned and prevents it from turning. When
this lock plate is raised or slid clear of the axle it is held in that
position securely by a set screw, with which it is fitted for that
purpose.

page_text: applics, is intended to illustrate a harrow formed. according to my said
Invention, and shews the same in side elevation.
EXPLANATION OF THE DRAWING.
Fig. 1, A are the shafts for attaching a horse to the implement; B,
a light iron or other frame; C, travelling wheels, upon which the
implement is mounted; D, the axle; E, the drum fixed to the said
axle, and coupled to the wheel, when required, by a clutch inside tho
wheel, but not shewn in the Drawing; F, the chain or other jointed
harrow, here shown as partially wound upon the drum; G, the bracket
or lower portion of the frame B, in which the bearings of the wheels C
are formed; H, the slide or lock plate, which fits over the square end
of the axle for preventing it from turning; this slide is here shewn as
Iet down, thus having locked the axle. I is the set screw for securing
the lock plate or slide when raised. By moving the clutch before
referred to the drum, which is secured to the axle, is coupled to the
travelling wheel, and both revolve together, and thus wind up the
harrow, the axle meanwhile rotating in the bearings in the brackets:
I claim the carrier harrow, the winding arrangement, and the
adjusting length of chain or joints.
In witness whereof, I, the said Henry Denton, have hereunto sct
my hand and seal, this Second day of Junc, in the year of our
Lord One thousand eight hundred and sixty-nine.