IMPROVEMENTS IN HORSE
Year: 1879

page_text: LETTERS PATENT to John Robert Jefferies, of the Orwell Works, Ipswich,
in the County of Suffolk, for the Invention of
RAKES."
[s
IMPROVEMENTS IN HORSE
Sealed the 21st March 1879, and dated the 2nd January 1879.
"
PROVISIONAL SPECIFICATION left by the said John Robert Jefferies at the
Office of the Commissioners of Patents on the 2nd January 1879.
JOHN ROBERT JEFFERIES, of the Orwell Works, Ipswich, in the County of Suffolk.
IMPROVEMENTS IN HORSE RAKES."
This Invention has for its object improvements in horse rakes.
The improvements consist in the means employed for deriving from the rotation
of the road wheels the partial rotation of the frame carrying the axis of the tines
or teeth for the purpose of discharging the crop. For this purpose I fix to each of
the wheels a disc, and upon the axle (or it may be upon the nave of the wheels) I
place an arm free to revolve. At the extremity of the arm I fit a swinging piece
or cam, which when pushed against the disc on the wheel immediately jams tight,
and causes the arm to revolve with the disc. At a suitable point the rotation of
the arm is arrested by the cam or swinging piece coming in contact with a stop
adjusted to requirement on the frame of the machine. When the centre of motion
of the tine frame coincides with that of the arm they may be permanently con-
nected with each other, or the arm inay be part of the tine frame; but when the
tine frame moves upon a different centre I make a long slot in the arm, and cause
a projecting pin or stud on the tine frame to take into such slot. The arm will
thus carry the tine frame through the requisite partial rotation, although moving
on a different centre. For throwing the swinging pieces or cams into contact with
the disc I employ a hand or foot lever, or both, with any of the known locking
devices.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Robert Jefferies in the Great Seal Patent Office on the 1st July
1879.
JOHN ROBERT JEFFERIES, of the Orwell Works, Ipswich, in the County of Suffolk.
"IMPROVEMENTS IN HORSE RAKES."
This Invention has for its object improvements in horse rakes.
The improvements consist in the means employed for deriving from the rotation
of the road wheels the partial rotation of the frame carrying the axis of the tines
or teeth for the purpose of discharging the crop. For this purpose I fix to each of
the wheels a disc, and upon the axle (or it may be upon the nave of the wheels) I
place an arm free to revolve. At the extremity of the arm I fit a swinging piece
or cam, which when pushed against the disc on the wheel immediately jams tight,
and causes the arm to revolve with the disc. At a suitable point the rotation of
the arm is arrested by the cam or swinging piece coming in contact with a stop
adjusted to requirement on the frame of the machine. When the centre of motion
The
of the tine frame coincides with that of the arm they may be permanently con-
nected with each other, or the arm may be part of the tine frame; but when the
tine frame moves upon a different centre I make a long slot in the arm, and cause
a projecting pin or stud on the tine frame to take into such slot, or vice versa.
arm will thus carry the tine frame through the requisite partial rotation, although
moving on a different centre. For throwing the swinging picces or cams into contact
with the discs I employ a hand or foot lever, or both, with any of the known locking
devices.
In order that my said Invention may be most fully understood and readily
carried into affiant T 11
1 D.
anovedd
Figure 1 is a side elevation, and Figure 2 is a plan of a portion of a horse rake
constructed according to my Invention, and in these Figures my improvements are
shown as applied to an implement in which the tine frame is carried upon the
axle.
a is one of the carrying wheels of the implement; b is the axle, and the frame c,
to which the shafts are attached, is mounted upon it. d is the tine frame; it also is
carried upon the axle, and it is free to turn. e, e, are the tines; they are jointed at
their upper ends to the tine frame independently the one of the other, and it will
be seen that, as is usual, the partial rotation of the tine frame will depress their
upper ends and raise beneath them the supporting bar d', which is fixed to and
forms part of the tine frame. g is a disc fixed to the wheel or to the axle; it is
here shown to be clamped to the spokes of the wheel. is a swinging piece or cam
jointed to the tine frame, and a light spring holds it just out of contact with the
periphery of the disc g. i is a foot lever and axis carried by the frame c, and the
axis has an arm i¹ at either end, by means of which, when it is desired to raise
the tines, the swinging pieces or cams h can be pressed into contact with the edges
of the discs g, against which they then immediately jam. The tine frame is then
carried round with the wheels until the swinging pieces or cams g come into contact
with stops fixed to the frame c, which force them away from the discs. The tino
frame is thus released, and the tines having disengaged themselves from the material
which they had previously collected again descend by their own weight until their
points rest upon the land.
Figure 3 is a side elevation, and Figure 4 is a plan of a portion of a horse rake
also constructed according to my Invention, and in these Figures my improvements
are shown as applied to an implement in which the tine frame is carried so that it
is free to turn about centres which are not concontric with the wheels.

page_text: a is one of the wheels; it has in this case a short or stud axis b, which is ad-
justably connected with the frame c of the implement. d is the tine frame; it is
connected at d with the frame c so as to be able to turn thereon, and by its move-
ment the tines e are raised and lowered, as in the arrangement already described.
g is a disc fixed to the road wheel, as before. h is a swinging piece or cam, which
in this case is carried upon an arm h¹, and the arm is mounted so as to be able
to turn upon the stud axis b. 2 is a spring by which the swinging piece or cam is
held off from the disc g until it is forced against it by the foot lever and arm i, i².
The swinging piece or cam then jams against the disc, and is carried round by it
until it is released by striking the stop . is a bolt projecting from the side of
the arm h¹ and entering a slot in the end of the frame d, so that in its movements
the arm carries the tine frame e with it, but there is freedom for the movements
to take place around separate centres.
Having thus described the nature of my said Invention, and the manner of per-
forming the same, I would have it understood that I claim,-
First. The means for deriving from the rotation of the road wheels the partial
rotation of the tine frame for the purpose of discharging the crop, such means con-
sisting in the use of a swinging piece or cam in connection with the tine frame,
which is caused, when required, to engage with a disc turning with the road
wheels.
Second. My improvements in horse rakes, substantially as described, and repre-
sented in the annexed Drawings.
In witness whereof, I, the said John Robert Jefferies, have hereunto set my
hand and seal, this Twenty eighth day of June, in the year of our Lord One
thousand eight hundred and seventy nine.
JOHN ROBERT JEFFERIES. (L.S.)