Improvements in Apparatus for Lifting Harrows.
Year: 1893

page_text: Date of Application, 8th Feb., 1893
Complete Specification. Left, 8th Nov., 1893-Accepted, 9th Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Lifting Harrows.
I. JULES ALPHONSE DURET of Sillery, Marne, in the Republic of France,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention for improvements in apparatus for lifting harrows has for its
object to construct an apparatus for effecting the easy raising of harrows whilst
at work, and the removal of the refuse from the teeth without stopping, and also
for carrying the harrows during transit from place to place; and consists in the
adaptation of harrows of any system, shape or size to a frame forming the point
of support from which to operate by mechanical means the movement of the
harrows, thus multiplying the force exerted.
A frame is adjustably mounted on wheels, with or without front carriage, in
such manner, that the distance between the frame and the ground may be regulated
as desired.
The frame also carries levers oscillating about fixed points and attached, either
by chains or by small rods, to the harrow which is to be lifted.
When in the course of working it is required to clean the harrow it is raised by
means of the said levers above described, the refuse collected round the teeth
remaining on the ground, and ou letting go the levers the harrow is again in the
working position.
The levers above described may be replaced by one or more axles carrying
pullies on which are wound chains connected to the harrow, or by any other
mechanical arrangement susceptible of producing the same movement.
When it is desired to transport the harrow along a road, the whole frame is
raised by means of the arrangements previously described, and serving to attach it
to the wheels which support it. The whole of the harrow is sufficiently raised
not to touch the ground with any of its teeth, and may thus be conveniently
transported.
Dated this 8th day of February 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Lifting Harrows.
I, JULES ALPHONSE DURET of Sillery Marne, in the Republic of France
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 :-
The present request for a Patent has for its object the easy raising of harrows
whilst at work and the clearing of the teeth without stopping, of the refuse picked
up thereon whilst harrowing.
This apparatus also serves, as will be seen by its arrangement as a frame for
carrying harrows on roads which although not the principal object of its arrange-
ment constitutes a notable improvement on the means hitherto employed, by the
promptness and ease with which the raising and setting to work are performed.
To obtain all the useful effect of harrows and to profit under the best possible
conditions of the services of this implement it is necessary that the harrow whilst
This operation
at work should be raised often and the teeth left clear and free.
presents difficulties and often in consequence of the fatigue it occasions is effected

page_text: in an insufficient manner, to the detriment of the quantity and good execution of
the work done. It is therefore advisable for this reason to substitute mechanical
means for the insufficiency of human force and energy.
To this end and in order to obtain the desired effect I have made a simple
combination which has a result far superior to that hitherto obtained without
this help.
My invention may be adapted indiscriminately to any system of harrow in use
leaving to each the particular merits due to its method of construction.
The invention consists in the adaptation to harrows, of any system, shape or size,
of a frame forming the point of support from which to operate by mechanical
ineans the movement of the harrows thus multiplying the force exerted.
On the annexed drawing I have shown as an example, the application of my new
apparatus to any kind of harrow, Fig. 1 being a front elevation in perspective
and Fig. 2 a side elevation.
The frame A is mounted on wheels B B with or without front carriage, it is
connected to the wheels which support it either by rods resting on the extremities
of the axle tree or by a rack or adjustable screws in such manner that the distance
between the frame and the ground may be regulated as desired.
The frame also carries the levers D D oscillating about the fixed points F and
attached either by chains G or by small rods to the harrow H which is to be
.lifted.
When in the course of working, it is required to clean the harrow H it is raised
by means of the said levers D D above described, the refuse collected round the
teeth remaining on the ground, and on letting go the levers the harrow is again
in the working position.
The levers above described may be replaced by one or more axles carrying
pulleys on which are wound chains connected to the harrow, or by any other
mechanical arrangement susceptible of producing the same movement.
When it is desired to transport the harrow along a road the whole frame is
raised by means of the arrangements previously described and serving to attach
it to the wheels which support it. The whole of the harrow is sufficiently raised
not to touch the ground with any of its teeth and may thus be conveniently
transported.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. An apparatus for lifting harrows comprising a frame supported on wheels
and from which the harrow is suspended by chains or rods and levers, by means
of which it is raised or lowered substantially as described.
2. The arrangement and construction of apparatus for lifting harrows sub-
stantially as described with reference to the drawings.
Dated this 8th day of November 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.