Improvements in and relating to Haymaking Machines.
Year: 1890

page_text: Date of Application, 20th June, 1890
Complete Specification Left, 20th Apr., 1891-Accepted, 20th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in and relating to Haymaking Machines.
JOHN HARRISON of Stamford in the County of Lincoln Engineer.do hereby
declare the nature of this invention to be as follows:-
My invention relates to machines for tedding, or spreading out the hay when
cut and is applicable to that class of machine which is generally known as
"Haymakers and consists of a novel and improved form of gearing for actuating
the tedding forks or spreaders, and also relates to an improved spring arrangement
for adjusting the tines of the tedding forks and for allowing the tines to give when
they strike against an obstruction.
The first part of my invention consists of an internal toothed spur wheel which
is mounted on the shaft of the tedding forks, and which can be held fixed or made
to turn with or through the road wheel as required by a suitable clutch or catch.
The teeth of the internal wheel encircle and actuate a spur pinion fixed to the
tedding forks through two or more idle or connecting pinions arranged at intervals,
on studs fixed in arins, or a disc which is keyed inside the internal toothed wheel
(the internal toothed wheel being hollowed out at back of teeth to admit disc) on
the same shaft, or in some cases on a quil on the same shaft. The pinions which
are mounted at intervals on the disc inside the internal wheel are made of a suitable
size and pitch to gear into the teeth of the internal wheel and the fork pinion at the
same time.
The shaft upon which the tedding forks are mounted, may form an axle for road
wheels, or a second shaft may be used in rear of the centre of road wheel as most
convenient. The action of gearing is as follows when the internal toothed wheel is
clutched to or geared into road wheel and the shaft to which the disc carrying the
connecting pinions is keyed is held fixed then the tedding forks revolve in an
opposite direction to the internal wheel. And when the internal wheel is held fixed
and the disc carrying the connecting pinions made to revolve, with or through the
road wheel then the tedding forks will revolve in the other direction.
The second part of my invention relates to the adjustment of the fork tines
and consists of a cam which is brought to a certain position by a bar which
is mounted parallel with the fork head and is provided with a spiral spring and a
friction roller to act upon the cam and also a nut to adjust the strength of spring.
The cam can be set in different positions relative to fork head to incline the tines
to a more backward or forward position.
Dated this 19th day of June 1890.
J. HARRISON.
$
COMPLETE SPECIFICATION.
Improvements in and relating to Haymaking Machines.
JOHN HARRISON of Stamford in the County of Lincoln 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:
""
My invention relates to machines for tedding or spreading out hay when cut, and
is applicable to that class of machine which is generally known as Haymakers
and consist of a novel and improved form of gearing for actuating the tedding forks
or spreaders and also relates to an improved spring arrangement for adjusting and
allowing the tines of the spreading forks to give when they strike against an

page_text: obstruction which will be clearly understood by reference to the accompanying
drawings.
Sheet 1, and Figs. 1 and 2, show the principle of the first part of my invention ;
Fig. 1 being a sectional end elevation; and Fig. 2 a part sectional side elevation,
omitting all parts, only those necessary to show the method of driving and
reversing the motion of the tedding forks; by alternately holding the cnternal
wheel and rotating connecting pinions to cause the tedding forks to revolve in
either directions; which will be ample and sufficient to enable my invention to be
applied to the various existing forms of haymaking machines and at the same time
facilitates the understanding of my invention. A is an enternal toothed wheel;
which can be held fixed to the frame of machine or made to turn with or through
the road wheel by any suitable clutch; or catch; the enternal toothed spur wheel A;
encircles and actuates a spur pinion C, (which is cast or fixed to the tedding forks)
through two connecting pinions E, and E' (any number of these connecting pinions
may be used) the pinions E, and E'; are mounted on studs; ' and '; which are
fixed on cross arm g, the cross arm g, is keyed on shaft B; or it may be cast,
or fixed on a quill as will presently be described. The action is as follows when
the cross army is held fixed and the enternal toothed wheel A is made to revolve;
the tedding forks revolve in an opposite direction to the enternal wheel; and
when the enternal wheel is held fixed and the cross arm made to turn the tedding
forks revolve in an opposite direction.
Sheet 2 Figs. 3 and 4 of the accompanying drawings show the first part of my
invention applied to a haymaking machine with the tedding forks revolving on
the axle of the road wheels, D; only one side of the machine being shown, the other
side being of same construction; and as the general construction of haymaking
machines are so well known only parts necessary to show my invention are shown
in drawings.
Fig. 4 Sheet 2, shows an end elevation and Fig. 3 Sheet 2 shows part plan:
a is axle of road wheels and is fixed to side frame bracket t; h, is cover and pawl
box upon which is mounted pawl w; this pawl is provided with a spiral spring m;
and can be turned either to engage with ratchet n; on boss of road wheel, j;
or ratchet wheel s, which is cast on side bracket t.
The pawl m is shown detached in Figs. 8 and 9; Fig. 8 being a sectional back
elevation; and Fig. 9 a side clevation. The pawl is attached to the boss of
cover by pin to being screwed into boss at 103 and works in a slot extending the
whole width of cover, h; the spring m; acting between the head of pin and pawl
holds the pawl upon ratchet wheel the cover, h, acting as a guide; and prevents
the pawl turning on pin was the ratchet teeth never raise the pawl out of the slot
in cover, h, beyond the square part w
To change the action of pawl w; from one ratchet to the other; it is drawn up by
handle beyond the square part and turned half round the pawl having a ratchet
tooth only on one side wº, w³ being merely a guide.
The cover and pawl box ; is fixed to sleeve p; the sleeve p is mounted
loose upon axle a and has a cross arm p² upon which the connecting
pinions E and are mounted. The pinions E and E' gear into the tedding
fork pinion C and also into the internal toothed wheel A. The clutch or sleeve y,
is mounted on boss of internal wheel A, the boss being of hexagon shape to
turn sleeve the sleeve y, also passes over the boss of road wheel and is recessed at
end to engage with projections u, the sleeve or clutch, y, is held up to projections u
by spring, and can be disengaged by bar, ; this bar is only used when the
tedding forks are required to revolve in same direction as road wheels; and is
passed through slot in sheet iron cover, 1, (which is fixed to internal wheel,) at 1,
in position shown in dotted lines; and is then drawn towards road wheels, and made
fast to frame at 12; this has the effect of forcing sleeve y out of action and at same
time holding internal wheel fixed to frame.
The action is as follows When the pawl m; is turned to engage with ratchet n ;
and the bar is in position shown in Figures 3 and 4 Sheet 2; the clutch box ;

page_text: being fixed to sleeve p; will turn this sleeve, and the sleeve carrying connecting
pinions E and E' round with it; whilst the bar holds the enternal wheel A fixed
causing the tedding fork pinion C, to rotate in the same direction as road
wheels.
When the bar is removed the spring r, causes sleeve y; to engage with
projections u on boss of road j; and the clutch m; is turned to engage with
ratchets, which now holds the sleeve p, fixed; and causes the enternal toothed
wheel A, to rotate. Then the action of the tedding forks is in the opposite
direction.
The second part of my invention is shown 'detached in Sheet 1, Figs. 5; and 6;
of the accompanying drawings. Fig. 5 is an end elevation and Fig. 6, side
elevation, and consist of a heart shaped cam O; which is fixed to tedding fork Y;
and is pivoted to spring box J; which runs parallel with arm of tedding fork K;
M; is a bar shaped to fit slot q' at M', and is provided with friction roller which
acts upon cam O; the bar M; is carried through spiral spring q'; and is
provided with a nut for adjustment q³.
The action is as follows when the tines of tedding forks N; strike an obstruction
and are turned back then the cam will draw up bar M and so soon as the
obstruction is passed the tine is drawn in position by spring q
A recess is provided in cam O at O' to hold the tedding forks back when not
in usc.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I describe what I
claim is.
1st. The arrangement of spur gearing, applied to haymaking machines, described,
and shown with reference to Fig. 1 and 2 of the accompanying drawing.
2nd. The arrangement of spur wheels applied to machines for making hay,
wherein the connecting pinions, are carried round the driven pinion, and are
actuated by a fixed spur wheel, mounted upon the same centre, as the driven
pinion, as substantially shown and described with reference with the accompanying
drawing Fig. 1 and Fig. 2.
3rd. The arrangement of spur gearing for haymaking machines, mounted upon
the same spindle as the tedding forks, and the alternately holding, and releasing
the wheel and connecting pinion for the purpose of changing motion, as shown and
described with reference to Fig. 1, Fig. 2 Fig. 3 and Fig. 4 of the accompanying
drawing.
4th. The arrangement of gearing for haymaking machine, as substantially shown
and described with reference to the accompanying drawing Fig. 1, Fig. 2, Fig. 3
and Fig. 4 or any mere modification of the same.
5th. The method of adjusting the tines of haymaking machines as shown and
described with reference to Fig. 5 and Fig. 6 of the accompanying drawings
or any mere modification of the same.
Dated this 19th of April 1891.
J. HARRISON.