AN IMPROVED ROLLER FOR AGRICULTURAL PURPOSES
Year: 1878

page_text: LETTERS PATENT to George Thomas Plumbly, of North Walsham, in the County
of Norfolk, for the Invention of "AN IMPROVED ROLLER FOR AGRICULTURAL
PURPOSES."
Sealed the 6th December 1878, and dated the 19th June 1878.
PROVISIONAL SPECIFICATION left by the said George Thomas Plumbly at
the Office of the Commissioners of Patents on the 19th June 1878.
GEORGE THOMAS PLUMBLY, of North Walsham, in the County of Norfolk. "AN.
IMPROVED ROLLER FOR AGRICULTURAL PURPOSES."
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This Invention consists in certain improvements in the construction of rollers for.
agricultural purposes, the same being especially applicable to fields in which wheat
has been sown in rotation after grass, inasmuch as the implement is so constructed
as to give an equal pressure throughout its entire width, whilst it accommodates.
itself to any inequalities of the ground and leaves no hollow places under the turf-
or flag untouched.
The roller is of a compound character, that is to say, consists of a combination
of any desired number of separate rolls arranged so that each shall act independently
of the others. Each roll is mounted in suitable bearings attached to a lever of the
second order, so that a small space exists between each roll.
The inner ends of the levers are weighted, and are respectively mounted on a
common axle, and the frame of the implement above the rollers is fitted up as a
box in which is placed such a quantity of heavy material as will be sufficient to
counterpoise the outer ends of the levers when standing upon hard level ground.
The respective weights at the ends of the levers are proportioned according to
well-known principles so as to regulate the distances to which the rolls shall be
capable of being depressed upon coming to soft or hollow portions of the ground.
Dains B71

page_text: The implement is formed of metal, or of metal and wood combined, and possesses
the advantages herein-before referred to as compared with the cominon roller
previously employed, whilst it possesses another important quality, that of not
injuring the young wheat in turning round.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Thomas Plumbly in the Great Seal Patent Office on the 19th
December 1878.
GEORGE THOMAS PLUMBLY, of North Walsham, in the County of Norfolk. "AN
IMPROVED ROLLER FOR AGRICULTURAL PURPOSES."
My said Invention consists in certain improvements in the construction of rollers
for agricultural purposes, the same being especially applicable to fields in which
wheat has been sown in rotation after grass, inasmuch as the implement is so
constructed as to give an equal pressure throughout its entire width, whilst it
accomodates itself to any inequalities of the ground and leaves no hollow places
under the turf or flag untouched.
The roller is of a compound character, that is to say, it consists of a combination of
any desired number of separate rolls arranged so that each shall act independently
of the others. Each roll is mounted in suitable bearings attached to a lever of the
second order, so that a small space exists between each roll.
The forward ends of the levers are respectively mounted on a common axle, and
the opposite ends thereof are respectively provided with weights proportioned
according to the nature of the ground under treatment. The rolls on coming to soft
or hollow portions of the ground are, by means of the said weights, independently
depressed. The amount of vertical play of the said lovers is regulated by two bars
suitably placed, as will be well understood.
The apparatus as above described is mounted in a frame of any desired size or
form, such frame, when desired, being provided with a receptacle for containing a
quantity of heavy material in order to counterpoise the outer ends of the lovers
when standing upon hard level ground; or the samo object may be effected by
placing weights upon the before-mentioned bars for regulating the movements of
the levers.
I will now proceed to refer to the annexed Drawings, from which the nature of
my said Invention will be more clearly understood.
The same letters of reference refer to similar parts in the several Figures.
Figuro 1 is a side view of the implement, and Figure 2 is a plan view of the 3
same.
A are the rollers which are mounted in bearings B attached to the levers C. The
fulerum of the levers or common axle is shown at c. D are the bars for regulating
the movements of the levers, and E are scrapers.
The implement is formed of metal, or of metal and wood combined, and 4

page_text: possesses the advantages herein-before referred to as compared with the common
roller previously employed, whilst it possesses another important quality, that of not
injuring the young wheat in turning round.
Having thus described and ascertained the nature of my said Invention, and the
manner in which the same is to be performed, I would observe in conclusion that
what I consider novel and original, and therefore claim as constituting the Invention
secured to me by the said herein-before in part recited Letters Patent are, the improve-
ments in the construction of rollers for agricultural purposes, the same consisting of
a series of rollers connected to levers acting independently of each other, substantially
as and for the purposes herein-before described and set forth.
In witness whereof, I, the said George Thomas Plumbly, have hereunto set
my hand and seal, this Seventeenth day of December, in the year of our
Lord One thousand eight hundred and seventy-eight.
GEORGE THOMAS PLUMBLY. (L.S.)