Improvements in Ploughs.
Year: 1892

page_text: Date of Application, 13th Feb., 1892
Complete Specification Left, 14th Nov., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Ploughs.
I, CARL KOHLERT of 61-71 Weidenweg, Berlin, Germany, Engineer and
Director, do hereby declare the nature of this invention to be as follows:-
This invention of improvements in ploughs relates to the adjusting and raising
mechanism thereof whereby the depth of furrow to be made can be varied. In such
mechanism according to this invention the land wheel is mounted on an axle shank
or extension that is made in two parts adjustable relatively to each other and which
axle may with advantage be mounted to turn on a prolongation of the axle of the
The axle of the furrow
furrow wheel which is supported in the plough frame.
wheel and the axle of the land wheel are each provided with an arm, the two arms
being connected by rods to the same part of a pivotted adjusting lever, in such a
manner as to enable motion to be imparted simultaneously to both wheels, for the
purpose of putting the plough in or out of action, without it being necessary to fix
the adjusting lever in position. Simultaneously with the movement of the land and
furrow wheels a rear running or trailing wheel mounted on an axle stem is lowered
or raised in relation to the plough frame according to the direction of movement of
the adjusting lever. The said axle stem is adjustably mounted in the end of a short
transverse shaft provided with an arm which is connected by a rod with the
adjusting lever.
That part of the compound axle on which the land wheel is directly mounted
is capable of rotation about the prolongation of the axle of the furrow
wheel and can be moved relatively to the other part of the land wheel axle
by means of a segment fixed to this latter part and formed with holes into one or
other of which can be caused to engage a pawl mounted on the part on which the
land wheel is mounted so as to lock the two parts in their relative positions. Any
other suitable means may be employed for the purpose of altering the relative
positions of the two parts of the axle of the land wheel. The axis of the axle of
the furrow wheel, the fulcrum of the adjusting lever, and the point of attachment of
the rods connecting the arms on the axles of the land and furrow wheels to the
adjusting lever, are so arranged with relation to each other that they will be
situated in the same plane when the adjusting lever has been moved so as to bring
the land and furrow wheels into contact with the ground consequently no special
fixing device will be necessary for retaining the lever in this position. When the
adjusting lever is raised so as to raise the said wheels and render the plough
operative, it bears against an adjustable stop on a semi circular bar.
According as the two parts of the land wheel axle are adjusted with relation to
each other the land wheel will be situated at a greater or less distance from the
plough frame when the plough is in work and consequently a deeper or shallower
furrow will be made.
The axle of the land wheel may in some cases be mounted separately on the
frame parallel to the axle of the furrow wheel. The arms attached to the axles of
land and furrow wheels may be so arranged that, when the adjusting lever is being
thrown forwards or backwards the land wheel moves forward and the furrow wheel
moves backward and vice versa, or by altering the position of the arms both wheels
may be made to move simultaneously in the same direction.
Dated this 13th day of February 1892.

page_text: the land wheel will be situated at a greater or less height in relation to the plough
frame, when the plough is in operation and consequently the action will be deeper
or shallower.
The axle A¹ B may in some cases be mounted separately on the frame parallel
to the axle A. In the arrangement shown the arms a a¹ are so arranged that when
the adjusting lever C is being moved forwards or backwards, the land wheel moves
forwards and the furrow wheel moves backwards, and vice versa. By altering the
position of the said arms however both wheels may be made to move simultaneously
in the same direction.
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 raising mechanism for ploughs in which the furrow wheel
axle A, and the land wheel axle, consisting of two relatively adjustable parts A¹B,
are operated by separate arms a a' and rods 66 from a common adjusting lever C,
the arrangement being such that the said adjustable lever will be held in each
of its end positions, corresponding to the operative and inoperative position of the
plough, without the aid of a special fastening or fixing device substantially as
described.
C. KOHLERT,
By L. W., per F. B.