A CERTAIN MODE OF CONSTRUCTING AND APPLYING A REVOLVING HARROW FOR AGRICULTURAL PURPOSES
Year: 1836

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
VAUX, of Woodford Bridge, in the Parish of Woodford, in the County of
Essex, Land Surveyor, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date
at Westminster, the Thirteenth day of June. in the sixth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Thomas Vaux, His especial licence, full power, sole privilege and authority,
that I, the said Thomas Vaux, my exors, adñiors, and assigns, or such others
as I, the said Thomas Vaux, my exors, adññiors, or assigns, should at any time
agree with, and no others, from time to time and at all times during the term
of years therein expressed, should and lawfully might make, use, exercise, and
vend, within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of "A CERTAIN MODE OF CONSTRUCTING AND APPLYING A REVOLVING
HARROW FOR AGRICULTURAL PURPOSES;" in which said Letters Patent there is
contained a proviso that I, the said Thomas Vaux, shall cause a particular
description of the nature of my said Invention, and in what manner the same is
to be performed, to be inrolled in His said Majesty's High Court of Chancery
within six calendar months next and immediately after the date of the said
in part recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Vaux, do hereby declare the nature of my Invention, and the manner
in which the same is to be performed, are fully described and ascertained in

page_text: and by the following statement thereof, reference being had to the Drawing
hereunto annexed, and to the figures and letters marked thereon, that is to
say:―
My mode of constructing and applying a revolving harrow has the important
peculiarity that one part of such revolving harrow shall in its action clear the
other part of the revolving harrow. And in order that my Invention may be
most fully described and readily carried into effect, I will describe the Drawing
vention may b
other part of the revolving arrow. And in order that my
most fully described and readily carried into effect, I will describe the Drawing
hereunto annexed.
DESCRIPTION OF THE DRAWING.
Figure 1 represents a left-hand side view, Figure 2 is a right-hand side
view, and Figure 3 is a plan of a harrow constructed according to my Inven-
tion. In each of these Figures the same letters of reference indicate similar
parts. a, a, is the framing which carries the parts of the rotatory harrow; this
frame a, a, moves on an axis b. The construction of this framing a, a, will
readily be understood by an examination of the Figures of the Drawing. c, c, are
the axes of the revolving harrow, which consists of two wheels with curved or
bent teeth or spikes affixed to the naves or bosses d by screws or otherwise. These
axes c, c, are capable of being moved to or from each other by slots or slits formed
in the side frame a, a. At the other end of the frame a, a, rise the racks e, such
racks being guided by moving between the guides f on the standards g, as is
clearly shewn. The standards 9, 9, are affixed to the framing h, h, and such
standards descend below such frame and receive the axis i of the wheel j, such
wheel j standing sufficiently off the framing, in order that the wheel j may run on
the unploughed land; and is a wheel which runs on the ploughed land. n is
a transverse bar to which the horses are harnessed at the rings o, o; the bar n
having a square opening to receive the square projecting pin of the frame p,
which carries the axis of the wheels or rollers q, r. These wheels 1,7, aro
intended to be more or less broad, according to the state of the land; and it
will be seen that the projecting pin of the frame p is not in the centre line of
the machine, but to the left hand thereof. This is with a view to assist in
guiding, and causing the harrow to follow the proper track, and it should be
observed that the projecting square pin of the frame p passes through an
adjusting socket m, screwed to a transverse bar which ties the front of the
side framing h, h, together. That portion of such pin p which passes through
such socket being cylindrical, moves in that bar as an axis, and produces the
necessary locking motion in order to turn the harrow, or to cause it to move
in a curved direction. s is an axis turning in the bearings at t, as is clearly
shewn; and v is a wheel affixed to the axis s; the wheel v having handles v',

page_text: by which it can be made to revolve, and by the cog wheels w taking into the
racks e, raise the inner frame, and with it the revolving harrow, thereby regu-
lating the depth to which the teeth or spikes of the harrow shall penetrate into
the ground. is a handle affixed on the axis y, which slides in bearings at
each side of the framing of the harrow, as is clearly shewn. To this axis are
affixed clicks or catches, which, taking into the racks, retain them to any
desired position. is a side framing affixed to one of the side frames a by
screws and nuts, as shewn, there being slots formed for adjustment. The
framing carries an axis z' for the wheel, which runs in the furrow pro-
duced by the plough, for it should be understood that this harrow is intended
and purposely framed for following a plough; but if the harrow is desired to
be made according to my Invention for other purposes, then this wheel = may
be dispensed with, and the projecting pin of the frame p may be in a direct
line with the centre of the machine.
Having thus described the various parts of the framing, and the construction
of the revolving harrow itself, I would remark that such revolving harrow may
have more or less curved spikes or teeth than are shewn, to suit the desire of
the person requiring the same; and the number of sets of such teeth or spikes
may be varied on each axis without departing from my Invention. It will
readily be seen that on drawing the harrow in the direction of the harrow, the
curved spikes or teeth will penetrate the earth and equalize it, and as the
teeth or spikes on one axis c of the harrow are interplaced between the spikes
or teeth of the other, and as they enter between each other, in addition to
pulverizing the surface of the carth, they will also clear each other of any clods,
couch grass, or any other material which they would otherwise carry up,
and by which they would ultimately become more or less clogged if it were
not for the self-clearing process constantly going on. And there are spikes
which enter between the spikes of the hinder part of the harrow and clear it
of any material which this wheel or part of the harrow might otherwise carry
up; and it will be seen that the fore wheels or rollers 9, 7, are provided with
scrapers to keep the surface thereof unclogged, to which they would otherwise be
subject by the sticking of the earth; and the hind wheel which runs on the
ploughed earth has a spike supported from a lever from the axis of that wheel,
such spike following in the track of the wheel, and opening the earth pressed
down by that wheel, all which is clearly shewn in the Drawing.
In conclusion I would remark that I lay no claim to the separate parts of
which the harrow or its framing are composed, but do confine myself to the
constructing revolving harrows that the teeth or spikes of one part of the
harrow in their revolution shall enter between, and, in working, tend to clear
the teeth or spikes of the other part of the harrow, as above described.

page_text: And I do further claim the combination of the other parts shewn in thic
Drawing, when used in conjunction with the mode of arranging the teeth or
spikes of the harrow, as above described:
CI
In witness whereof, I, the said Thomas Vaux, have hereunto set my
hand and seal, this Thirteenth day of December, in the year of our
Lord One thousand eight hundred and thirty-six.
THOS VAUX (L.B.)
M
AND BE IT REMEMBERED, that on the Thirteenth day of December,
in the year of our Lord 1836, the aforesaid Thomas Vaux came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid," and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according to
the tenor of the Statute made for that purpose.
C...
Inrolled the Thirteenth day of December, in the year of our Lord One
thousand eight hundred and thirty-six.
hie et
c.
..
LONDON
Printed by GEORGE EDWARD EYRE and, WILLIAM SPOTTISWOODE
Printers to the Queen's most Excellent Majesty. 1856.
-
2
bisa
sho
»
J
pulga
ga
co
..
.:
7
th: