Improvements in Adjustable Heads for Cultivators.
Year: 1895

page_text: Date of Application, 15th Feb., 1895-Accepted, 30th Mar., 1895
Improvements in Adjustable Heads for Cultivators.
A communication by ARNOLD J. MACHEN, of 339, Batavia Street, Toledo, in
the County of Lucas and State of Ohio, United States of America, Merchant
Tailor.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street, Manchester,
both in the County of Lancaster, 118 New Street, Birmingham in the County of
Warwick and 31 High Holborn in the County of Middlesex, Civil 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 :-
This invention relates to improvements in adjustable heads for cultivators, to
which the various kinds of shovels, blades, or tines are secured, and the object of
the invention is to provide a substantial fastening and a rapid and perfect adjust-
ment for the attachment of these various shovels, blades or tines to the head of the
cultivator either for horse or hand use.
These objects are attained by the mechanism illustrated in the accompanying
drawing, in which,
Figure 1 is a top view of the head complete with the socket and a portion of the
tines or shovels extending from the head, the same being shown in their most
extended form.
Figure 2 is a bottom view of the head complete with the socket and a portion of
the tines or shovels extending from it, the same being shown in their most
contracted form.
Figure 3 is a perspective view of the top side of the head plate with the socket
and the hanger hooks for the adjustment roller.
Figure 4 is a view of the adjustment roller.
Figure 5 is an under side view of the binding or cap plate.
Figure 6 is a view of one of the tines or shovels complete.
Figure 7 is an enlarged detail view of the head of one of the tines or shovels.
Figure 8 is an enlarged detail view of the head of one of the tines or shovels
which shows a modified form, reversing the order by putting the hole in the tine or
shovel and the pin on the head plate.
In all of which views like letters refer to like parts.
The body plate 1 of the head is flat and plain on the under side and braced with
a border rib around three sides of its top. From its longer front edge projects out
on each corner a hanger 4, 4, and from its back edge projects at a desired angle a
socket 2, for a handle. This plate is provided also with two or more bolt holes
and a series of holes 3, to receive the pins, i, on the tines or shovels 7, 8, 9.
In the hangers 4, 4, is pivoted an adjustment roller 5, Figure 4. This adjust-
ment roller is provided with thumb-screw lever extensions d, d, on each end outside
of its bearings, small projection stops e, e, and a series of grooves around it which
form seatings for the several or series of tines or shovels 7, 8, 8, and 9, 9. The
centre groove a, extends directly around the roller 5. The grooves bb, on either
And
side of the centre take a right and left spiral screw or worm-like direction.
the outer grooves c, c, on either side take a still greater right and left pitch in their
spiral screw or worm-like direction, the objects of which grooves are to perfectly

page_text: and quickly adjust the several tines or shovels to an extended or contracted
position as shown respectively in Figure 1, and Figure 2. The tine or shovel, Figure 6,
is curved over hooking and flattened and sharpened at the point 1, and at the head
it is squared and provided with a pin i, by means of which it is pivoted to the
plate 1, in the holes 3. There are four or more of these tines or shovels and when
they are all in position a cap binding plate 6, having a flange ff and bolt holes g g
is placed over them, and the two bolts put through the two plates and tightened so
as to bind the two plates firmly together with the heads of the tines or shovels
between them. Then by simply slacking the strain of the bolts the adjustment
roller 5, may be rotated forward or backward until the stops ee strike the plate 1
below or plate 6 above. As it is rotated these tines lying across it and in their
respective grooves are carried in or out respectively as desired and also retained at
any point by simply tightening the binding bolts.
As to the particular shape and construction of these tines or shovels, Figure 6,
my correspondent designs to use the head h in either the pin or hole form, Figure 7,
or Figure 8, but that portion outside of the cultivator's head as 7 to 1 he designs to
bend and shape as a tine or to attach to it a shovel as the work or use to which it
is to be adapted demands. Its various parts will be made of steel and iron, and
adapted in its uses and purposes to be made for hand or horse cultivator.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I wish it to be understood that I am aware that cultí-
vators have been made prior to this invention with the tines or shovels in some way
adjustable to the head. I therefore do not claim such a construction broadly but I
declare that what I claim is :-
1. In an adjustable head for cultivators the body plate with its handle socket,
series of pivot holes and hangers in combination with an adjusting roller, provided
with bearings and a series of straight and spiral right and left grooves, substantially
as described.
2. In an adjustable head for cultivators, the body plate with its handle socket,
hangers and series of pivot holes, in combination with the heads of the tines
provided with pivot pins, substantially as described.
3. In an adjustable head for cultivators, the combination of a series of tines
secured by pivots and bolts between a binding plate and a body plate provided with
a handle socket and hanger, to which is pivoted an adjustment roller provided with
a series of grooves, substantially as described.
4. In an adjustable head for cultivators, the combination of the body plate with
its socket, series of pivot holes, hangers, adjustment roller, with its series of grooves,
the series of tines with their heads and pivot pins secured by means of a binding
plate, and bolts, all substantially as set forth.
Dated this 14th day of February 1895.
WM. P. THOMPSON & Co.,
Agents.