Improvements in Hay Making Machines.
Year: 1891

page_text: Date of Application, 7th July, 1891
Complete Specification Left, 5th Apr., 1892-Accepted, 14th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in Hay Making Machines.
JOHN EDWARD SHARMAN PERKINS of Queen Street Iron Works Peter-
borough in the County of Northampton Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention relates to the class of haymaking or tedding machines in which
the hay is shaken by a series of forks actuated by a crank shaft.
In order to throw the machine into gear the axle on which the road wheels turn
has two eccentrics fixed on it, the eccentrics turn in bushes fixed to the frame of
the machine, and by partially revolving the eccentrics the spur wheels which turn
on the main axle and by which motion is imparted to the crank shaft are moved up
to and into gear with the corresponding pinions.
In some cases motion is imparted to the pinion on the crank shaft through an
intermediate wheel turning on a stud.
Where it is desired to provide different ratios of speed between the main driving
wheels of the machine and the crank shaft which actuates the forks two or more
pinions are arranged on the crank shaft and corresponding wheels are provided to
turn in the stud.
In order that different sizes of intermediate wheels may gear with the cog wheels
on the main axle of the machine and with various sizes of pinions on the crank
shaft it is necessary to alter the position of the stud on which the intermediate
pinion works.
This may be done by providing slots in the bracket which carries the inter-
mediate stud so that the bracket may be free to slide along on the frame of the
machine and be fixed by bolts at suitable positions for the various sizes of
intermediate wheels or slots may be provided in the frame of the machine for the
same purpose or separate bolt holes may be provided to fix the stud on the bracket
carrying the stud, in different positions."
By another arrangement a stud or bolt attached to the frame of the machine
may carry an eccentric, this eccentric takes the place of the moveable stud and on
it the intermediate wheel turns, the eccentric may be clamped in various positions
to suit the various sizes of intermediate wheel which it is desired to employ.
By another arrangement a bracket with two studs carrying different sizes of
intermediate wheels may be arranged to turn about a centre or to slide to positions
in which the different sizes of intermediate wheels will gear with the corresponding
pinions and with the main cog wheels.
By another arrangement a stud fixed to the frame of the machine carries a
sliding sleeve with two toothed wheels upon it one of these gears into both the
large main wheel and one of the pinions on the crank shaft the other into the
second pinion of the crank shaft only, the former of these is wide enough to gear
into the main wheel when it is either in position to gear with the pinion on the
crank shaft or for the second wheel on the sleeve to gear with the second pinion on
the crank shaft or the sleeve may carry separate wheels to gear with the two
pinions on the crank shaft in addition to the wheel which gears with the main
wheel on the axle of the machine.
Dated this 6th dose of 1..1, 1901

page_text: COMPLETE SPECIFICATION.
Improvements in Hay Making Machines.
JOHN EDWARD SHARMAN PERKINS of Queen Street Iron Works Peterborough
in the County of Northampton, 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 the class of hay making and tedding machines in which
the hay is shaken by a series of forks actuated by a crank shaft.
In order to throw the machine into gear the axle on which the road wheels turn
has two excentrics fixed on it, the excentrics turn in bushes fixed to the frame of
the machine and by partially revolving the excentrics the spur wheels which turn
on the main axle and by which motion is imparted to the crank shaft are moved up
to and into gear with the corresponding pinions.
In some cases motion is imparted to the pinion on the crank shaft through an
intermediate wheel turning on a stud.
Where it is desired to provide different ratios of speed between the main driving
wheels of the machine and the crank shaft which actuates the forks two or more.
pinions are arranged on the crank shaft and corresponding wheels are provided to
turn in the stud.
In order that different sizes of intermediate wheels may gear with the cog
wheels on the main axle of the machine and with various sizes of pinions on the
crank shaft it is necessary to alter the position of the stud on which the intermediate
pinion works.
This may be done by providing slots in the bracket which carries the intermediate
stud so that the bracket may be free to slide along on the frame of the machine
and be fixed by bolts at suitable positions for the various sizes of intermediate
wheels or slots may be provided in the frame of the machine for the same purpose
or separate bolt holes may be provided to fix the stud or the bracket carrying the
stud in different positions.
By another arrangement a stud or bolt attached to the frame of the machine
may carry an excentric, this excentric takes the place of the moveable stud and
on it the intermediate wheel turns, the excentric may be clamped in various
positions to suit the various sizes of intermediate wheels which it is desired to
employ.
By another arrangement a bracket with two studs carrying different sizes of
intermediate wheels may be arranged to turn about a centre or to slide to positions
in which the different sizes of intermediate wheels will gear with the corresponding
pinions and with the main cog wheels.
By another arrangement a stud fixed to the frame of the machine carries a
sliding sleeve with two toothed wheels upon it, one of these gears into both the
large main wheel and one of the pinions on the crank shaft the other into the
second pinion of the crank shaft only, the former of these is wide enough to gear
into the main wheel when it is either in position to gear with the pinion on the
crank shaft or for the second wheel on the sleeve to gear with the second pinion on
the crank shaft or the sleeve may carry separate wheels to gear with the two
pinions on the crank shaft in addition to the wheel which gears with the main
wheel on the axle of the machine.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side view partly in section and Fig. 2 a plan of a haymaking machine
as described above.
A is the main driving wheel which turns with the road wheels and communicates
motion to the pinion C on the crank shaft through the idle wheel B which turns on

page_text: bolted to the frame of the machine. The lever F is also fixed to the main axle.
By turning the lever F to the dotted position F' the excentric is partly revolved
and the spur wheel A withdrawn from gearing with B.
To vary the speed of the forks the stud G can be moved into such a position as
to allow the intermediate wheel B to be replaced by a smaller wheel B₁ gearing
with a larger pinion C¹ on the crank shaft.
Fig. 3 is an elevation and Fig. 4 a plan of a similar arrangement in which the
intermediate wheels B and B turn on an excentric H which can be turned to the
position H' shown by dotted lines to suit the larger wheel B.
Fig. 5 is an elevation and Fig. 6 a plan of a similar arrangement in which the
intermediate wheels B and B are cast in one piece and slide on the stud to the
position in which B is in gear with C, B₁ being wide enough to continue in gear
with the large wheel A in either position.
Fig. 7 is an elevation and Fig. 8 a plan of another arrangement in which the
intermediate wheels B and B31 turn on studs fixed to a bracket L which can be
fixed in suitable positions for either B or B₁ to gear with the large wheel A.
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 :-
1. ln a haymaking machine as described the arrangement for throwing the
machine in and out of gear by an excentric substantially as described.
2. The arrangements for varying the speed of the crank shaft substantially as
described.
Deted this 4th day of Anril 189
J. EDWARD S. PERKINS.