Improvements in Haymaking Machines.
Year: 1892

page_text: Date of Application, 27th May, 1892
Complete Specification Left 10th Feb. 1893-Accented 29th Apr. 1893
PROVISIONAL SPECIFICATION.
Improvements in Haymaking Machines.
JOHN EDWARD SHARMAN PERKINS of Queen Street, Peterborough Engineer
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in haymaking machines, and is specially
applicable to that class of machine in which the hay is moved by a series of forks
actuated by a crank shaft., Part of it is however, applicable to other machines
with a similar action.
In order to lessen the shocks to which the bearings are exposed from the
momentum of the fork shafts I interpose springs in the connection between the
bearings working on the cranks and the fork shafts.
It is usual to attach these bearings by bolts passing through the fork shafts
thereby weakening them. In place of this I attach them by bolts passing
on either side of the fork shaft the bearing being further secured in its place by
projections cast on it which fit into recesses on the fork shaft.
I construct the forks of steel wire, the centre part of each fork being coiled in
two spirals a straight piece being left between them to past the fork shaft and to
secure the fork in position. The spirals are threaded on a pin passing through the
fork shaft and a suitable length at each end is left uncoiled and forms the fork.
Two or more of these forks may be threaded on the pin, the straight piece
between the coils being made of such length as to pass the intervening forks.
The straight piece between the coils is held in position by a spring which yields
if the fork comes in contact with any obstruction.
Dated this 26th day of Mov 1899
J. EDWARD S. PERKINS.
COMPLETE SPECIFICATION.
Improvements in Haymaking Machines.
JOHN EDWARD SHARMAN PERKINS of Queen Street Peterborough 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 haymaking machines, and is specially
applicable to that class of machine in which the hay is moved by a series of forks
actuated by a crank shaft. Part of it is however applicable to other machines,
with a similar action.
In order to lessen the shocks to which the bearings are exposed from the
momentum of the fork shafts, I interpose springs in the connection between the
bearings, working on the cranks and the fork shafts.
It is usual to attach these bearings by bolts passing through the fork shafts,
thereby weakening them,-in place of this I attach them by bolts passing on either
side of the fork shaft, the bearing being further secured in its place by projections
cast on it which fit into recesses on the fork shaft.
I construct the forks of steel wire the centre part of each fork being coiled in
two spirals, a straight piece being left between them to pass the fork shaft and to
secure the fork in position. The spirals are threaded on a pin, passing through
the fork shaft and a suitable length at each end is left uncoiled, and forms the
fork.

page_text: . Two or more of these forks may be threaded on the pin, the straight piece
between the coils being made of such length, as to pass the intervening forks.
The straight piece between the coils is held in position, by a spring which yields,
if the fork comes in contact with any obstruction.
DESCRIPTION OF DRAWINGS.
Fig. 1. shows the fork arm of a haymaking machine, constructed in accordance
with my invention, the bearing A is attached to the fork arm by a clip B. passing
on each side of the fork arm C. instead of by bolts passing through the fork arm,
or separate bolts may pass on each side of the fork arm and be attached to a plate
at D. Projections E, are cast on the foot of the bearing to secure it further.
Fig. 2. shown a similar mode of attaching the bearing to the fork shaft, in which
springs F are interposed in the connection between the bearing and the crank shaft
to lessen the shocks to which the bearings are exposed.
Fig. 3. shows a similar arrangement in which the bolts pass through the fork
shaft.
Figs. 4 and 5. are two views of a hay tedder fork constructed of bent wire, the
forks G are free to turn in the pin H, when they come in contact with any
obstruction, but their motion is controlled by the plate J and spring K, which force
them back to their position, when the obstruction is passed.
Fig. 6. shows a similar arrangement in which the motion of the forks is controlled
by a flat spring L.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is.-
-
1st. In a haymaking machine, the method of attaching the bearings to the fork
arms by bolts passing on each side of, instead of through the arms.
2nd. In a haymaking machine the method of interposing springs, between the
bearings and the fork arms substantially as described.
3rd. In a haymaking machine, the construction of forks with controlling springs,
substantially as described and illustrated in Figs. 4, 5, and 6.
4th. The improvements in haymaking machines, substantially as described.
Dated this 9th day of February 1892.
J. EDWARD S. PERKINS.