Improvements in and Appertaining to the Expansion and Contraction of Horse Hoes, Scarifiers, and the like.
Year: 1893

page_text: Date of Application, 10th Mar., 1893-Accepted, 2nd June, 1893
COMPLETE SPECIFICATION.
Improvements in and Appertaining to the Expansion and
Contraction of Horse Hoes, Scarifiers, and the like.
CHARLES STEPHENSON and WILLIAM STEPHENSON of Newark in the County
of Nottingham, Agricultural Engineers, 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 :-
According to this invention we construct machinery for the expansion and
contraction of horse hoes, scarifiers, and the like, in which a handle or lever is
shaped at one end, into the form of a cam, or eccentric, and attached to a hollow
standard at the top by means of a stud or bolt, at the bottom of the hollow standard
is fixed, at right angles, a arm which extends into notches formed in a segment,
under the beam is placed a arm, a stud being attached to its centre, and passing
through the beam into the hollow standard, and kept in position by two lock nuts,
being formed square at the point where it enters the hollow standard, over this stud,
and inside the hollow standard, is placed a spiral spring which is kept in position
by a nut or cap, upon the top of the stud, and resting upon a seat formed inside
the hollow standard, attached by studs or bolts to each end of the arm, under the
beam, to which the stud is fixed, are other arms or links, which are connected in
the same way to the side bars.
Or instead of the handle or lever, we construct the hollow standard with
projections at the top, opposite one to the other, which act as the handle.
Or in place of the arm, which is attached to the hollow standard, and the
segment to which it extends, we form at the bottom of the hollow standard, notches
or projections, and also place a cap or ring, upon the beam, with corresponding
notches and projections, the one fitting into the other.
In order that our said invention may be fully understood, and readily carried
into effect, we will proceed to describe the drawings hereunto annexed.
Fig. 1, is a side view, and Figure 2, is a plan of the same.
Figure 3, is an enlarged view showing details.
A. A. are the side bars, to which are attached the hoe standards or tines, in the
ordinary way, B is the beam to which is fixed the leading wheel, and draw hook at
one end, and the handles C. C. at the other formed in the usual way, D. D. are the
cross plates between which the side bars A A. move, the handle or lever E is
shaped at F into the form of a cam or eccentric, and moves upon stud G in a
notch formed upon the top of the hollow standard H, and at the bottom of hollow
standard H is fixed arm I which extends into segment J provided with notches at
intervals. Stud K is attached to the center of arm L and passes through a round
hole in beam B at M and is secured by two nuts N upon the top. After leaving
the nuts N at O the stud K is square corresponding to a square hole formed in
hollow standard H and afterwards round with nut or cap P at the top, between
nut or cap P and the seat formed inside hollow standard H at Q, as shown by
Figure 3, is a spiral spring R. Connected by joints or studs at each end of the
arm L, are arms or links S. S. which are also attached at the other end to side
bars A A. by bolts or studs.
It will be seen by these particulars that when handle or lever E is turned over
to the reverse side, as shown in Figure 3, the cam or eccentric F comes in contact
with nut P upon the top of stud K, which movement lifts up hollow standard H
and at the same time lifting arm I out of the notches in segment J, with stud K
being attached to arm L in the center, and being square at O, and a corresponding
square hole in the hollow standard H, whatever movement is given to the handle

page_text: or lever E, arm L must make the same movement, and with arms or links S. S.
being attached to arm L and side bars A A. A corresponding movement is given
to them, so that the expansion or contraction of the side bars A A are according to
the movement of the handle or lever E, the arm I is kept in the different notches
in segment J by means of the spiral spring R inside hollow standard H.
Sometimes instead of using the handle or lever E we construct the hollow
standard H with projections T at the top, and opposite one to the other, as show
in Figure 4, which act as the handle, the movements are the same as described
above.
Or in place of the arm I upon the hollow standard H, and the segment J, we
form at the bottom of the hollow standard H notches or projections U, as shown in
Figures 5 and 6, and also place a cap or ring V upon the beam B at M, with
corresponding notches or projections, the one fitting into the other, the cap or
ring is held in place by the lock nuts N, sometimes the handle or lever E as
shown in Figure 3, is fitted to this, and at others, the handle with projections T as
shown in Figure 4, the movements are the same in each arrangement.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
Mechanism substantially as described in and by the annexed drawings, for the
expansion and contraction of horse hoes, scarifiers, and the like, in which a handle
or lever shaped at one end into the form of a cam or eccentric, is attached to a
hollow standard, or sometimes in place of the handle or lever, projections are formed
upon the hollow standard which act as the handle or lever, and upon the hollow
standard is fixed a arm which extends into a segment provided with notches, or
sometimes instead of the arm and segment, the hollow standard has formed upon it
notches or projections, and a cap or ring fixed to the beam with corresponding
notches or projections, a stud fixed to the center of a arm passes through the
beam and extends into the hollow standard, the arm being connected to the side
bars by arms or links.
Dated this Ninth day of March 1893.
CHARLES STEPHENSON.
WILLIAM STEPHENSON.