Improvements in Ploughs.
Year: 1897

page_text: Improvements in Ploughs.
I, CARL KOHLERT, of Frankfurter Chaussee 162-5, Friedrichsberg, near Berlin,
Germany, Engineer, do hereby declare the nature of this invention to be as
follows:-
A plough according to this invention is provided with adjusting and lifting
mechanism such that in throwing the adjusting lever out of action when the
plough is being adjusted for ploughing the arm of the furrow wheel strikes against
a fixed stop on the frame, and the land wheel can then be lifted up beyond the
height of the furrow wheel, by means of the adjusting lever one connecting rod of
which engages with one arm of the furrow wheel axle.
In the further movement of the adjusting lever a pin on the latter moves in a
slot in the connecting rod of the adjusting lever, which rod engages with the arm
of the furrow wheel.
The invention is specially characterized by the fact that a pin is provided on the
adjusting lever for each of the two connecting rods in such a manner that both
pins are arranged at an angle to each other for the purpose of necessitating only
an extremely short slot in the connecting rod of the land wheel.
In one arrangement of plough according to the invention the connecting rod
which serves for the adjustment of the furrow wheel by means of one of two arms
on the cranked axle, does not engage with the same pin on the adjusting lever as
the connecting rod for the land wheel but with a separate pin which is situated
on an angularly bent arm of the adjusting lever.
Only the other connecting rod i.e. that which serves for the adjustment of the
land wheel by means of the other of the two arms above referred to and of the land
wheel axle part, engages with the pin which is situated in the centre line of the
adjusting lever, that is to say in quite another direction with relation to the centre
of rotation of the adjusting lever than that of the pin on the bent lever arm.
In this manner, in the movement of the adjusting lever from the position of
the furrow wheel which is limited forwards by the fixed stop, the pin on the bent
lever arm moves along a shorter path, because it is in a downwardly directed arc,
and consequently only a slot of very small length is required in its connecting rod.
The recoil of the furrow wheel on striking against a stone or other obstacle will
therefore be also correspondingly small.
100K
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.

page_text: Improvements in Ploughs.
I, CARL KOHLERT, of Frankfurter Chaussee 162-5, Friedrichsberg, near Berlin,
Germany, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
-
A plough according to this invention is provided with adjusting and lifting
mechanism such. that when the plough is being adjusted for ploughing,, on dis-
engaging the adjusting lever the arm of the furrow-wheel axle strikes against a
fixed stop on the frame, and the land-wheel can then be lifted up above the furrow-
wheel by means of the adjusting lever, one connecting rod of which engages with
one arm of the furrow-wheel axle.
In the further movement of the adjusting lever, a pin on the latter moves in a
slot in the rod that connects the adjusting lever with the arm of the furrow-wheel.
The invention is specially characterized by the fact that a pin is provided on the
adjusting lever for each of the two connecting rods in such a manner that lines
connecting the two pins with the pivot of the adjusting lever are arranged at an
angle to each other for the purpose of necessitating only an extremely short slot
in the connecting rod of the furrow-wheel.
Fig. 1 of the accompanying drawings is a side elevation of a plough having
adjusting and lifting mechanism according to this invention, showing in full lines
the parts of the plough arranged for transport, whilst the dotted lines show the
land and furrow wheels set to the level of the sole of the shares;
Fig. 2 is a side elevation showing the plough set for working, the land-wheel
being raised up above the furrow-wheel; and
Fig. 3 is a front elevation of the plough set for the purpose of transport.
The connecting rod 6 which serves for the adjustment of the furrow-wheel R
by means of the arm a on the cranked axle A, does not engage with the same pin
on the adjusting lever C as the connecting rod for the land-wheel R', but with
a separate pin, which is situated on an arm branching at an angle from the
adjusting lever C.
Only the connecting rod that serves for the adjustment of the land-wheel R¹
by means of the arm a¹ and of the land-wheel axle arm A, engages with the pin i
situated in the centre-line of the adjusting lever C that is to say, in a direction
with relation to the centre of rotation z of the adjusting lever quite other than that
of the pin on the arm of the lever C.
On the movement of the adjusting lever C forwards from the position correspond-
ing to that of the furrow-wheel R when limited as regards forward movement by
the fixed stop n, the pin moves forward only a short distance, because it is
moving along a downwardly directed arc (Fig. 2), and consequently only a slot r
of very small length is required in its connecting rod b. The recoil of the furrow-
wheel on striking against a stone or other obstacle will therefore be also corre-
spondingly small.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
Adjusting and lifting mechanism for ploughs having one or more shares, in
which the adjusting lever C is provided with a separate pin. (i or i¹) for each 4
connecting rod (6 or 6¹), in such a manner that the two pins are arranged not on
a centre-line common to the pivot of the adjusting lever, but on lines at an angle

page_text: to each other, for the purpose of necessitating only an extremely short slot in the
connecting rod b.
Dated this 14th day of February 1898.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.