IMPROVE- MENTS IN THE CONSTRUCTION OF MOWING AND REAPING MACHINES
Year: 1885

page_text: COMPLETE SPECIFICATION,
I, PHILIP PIERCE of Mill Road Iron Works Wexford in the County of Wexford
Ireland Engineer do hereby declare the nature of said Invention for." IMPROVE-
MENTS IN THE CONSTRUCTION OF MOWING AND REAPING MACHINES" and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
This Invention has for its object to improve and simplify the construction of
mowing and reaping Machines" such as described in the specification of my Patent
dated 6th February 1885 N° 1661 and consists in an improved arrangement or
construction of driving gear, an improved arrangement or construction of clutch
for the driving gear and an improved construction of framing. And in order that
this invention may be fully understood and readily carried into effect I will describe
the same with reference to the accompanying drawings of which
Figure 1 is a part sectional elevation of such portions of a Mowing and Reaping
Machine as are necessary to illustrate my Invention.
Figure 2 is a part sectional plan of the same.
Figure 3 is a part sectional view of a portion of the driving gear or train of
gearing and clutch gear.
Figure 4 is a sectional view of a modified arrangement of part of the clutch
gear.
"
Figure 5 is an end view of the driving travelling wheel.
Figure 6 is a vertical section through the same.
Figures 7 and 8 are end view and side view of the pawls and pawl plate for the
travelling wheel.
A A A A is the framing which is supported by and in which revolves the main
axle B in bearings at A¹ A² and is made to a suitable form to receive the driving
gear,
which framing I prefer to cast in one piece with the pole sockets CC.
The limb or part A of the frame is of U-shaped section into which is fitted a
barrel in which a shaft revolves. This shaft has fitted on one end the bevil
pinion D, and on the other end the crank plate E. This latter imparts a
reciprocating motion to the cutter bar F by means of the connecting rod G. The
U-shaped limb A³ is further extended in front of the crank plate E and is of a
Price Bd1

page_text: suitable formation to constitute a shield H for the crank plate E. The main
shoe I carries the cutting mechanism and is connected to the part A³ of the framing
by means of the radius bar J, K, the lower end of which hinges thereon, the upper
end being hinged at K to the framing, rigidity of the radius bar J, K, being ensured
by the stay L M which extends from the lower end J of the radius bar J, K to a
part A of the framing whereto it is pivotted. In the main shoe I a lug N is
formed and at a point O in the shield H which may be in line with the axis of
the hinge pins at K and A' one end of the front brace P is pivotted, the other end
being hinged to the lug N in the main shoe I. The function of the front brace P
is to assist the joint at J and prevent the sagging backwards of the outer end of
the cutting mechanism.
The first motion spur wheel Q is fixed on the main axle B. The second motion
spur wheel S has its boss or centre extended, forming the sleeve T as shown
especially in Figure 3 and revolves on the stud or spindle U, the latter being fixed
at both ends in the parts A of the framing. The first motion spur pinion R gearing
into the spur wheel Q is fitted loosely on the sleeve T and has flanged ends of
larger diameter than the cogs, one of such flanged ends being formed into a clutch
and on the adjacent side of the second motion spur wheel S a similar clutch is
formed, so that the spur pinion R can be brought in and out of gear with the spur
wheel S. This is effected by means of the roller V arranged between the shrouds R¹
of the pinion R before referred to.
By forming the pinion R with such shrouds R¹ for the roller V to work between
them I economize space and simplify the construction. The roller V is mounted on
a stud which is fixed eccentrically in the eccentric shifting lever W₁. The boss W
works in a socket of the part A of the framing and has a groove half way round
it and there is a set screw the end of which fits into the groove and limits the
movement of the lever W¹ both ways. The second motion spur pinion X gearing
with the spur wheel S is in one piece with the bevil wheel X and is mounted
loosely on the main axle B. The bevil wheel X¹ gives motion to the pinion D and
thence to the crank plate E and cutters F.
The second motion spur wheel S may as shown at Figure 4 be made to revolve
freely upon the stud or spindle U direct without being formed with a sleeve T and
the first motion spur pinion R may also then slide upon a portion of the stud or
spindle U. Or the stud or spindle U may be fixed in the spur wheel S and revolve
in bearings in the part A' of the framing but I prefer to use the arrangement
illustrated in Figure 3.
The travelling wheels Z Z are free to revolve on the main axle B and are placed
directly outside the parts A¹ A2 of the framing. The centres of the travelling
wheels Z Z are formed into ratchet boxes the arms or spokes radiating therefrom
as shown in Figures 5 and 6. Outside the travelling wheels Z Z on the ends of the
main axle B are fixed the pawl plates Z¹ Z¹ one of which is shown, in Figures 7
and 8. These pawl plates Z Z serve the double purpose of carrying the pawls
which are arranged in a manner now well known and which engage with the
ratchet boxes when the machine is moved forward and also act as caps, securing
the travelling wheels Z Z in their places on the main axle B.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
First-In clutch gear for mowing machines having the train of gearing
described; the first motion spur pinion R, provided with shrouds R¹ for the purpose
of receiving the roller V which is mounted eccentrically on the boss W of the
shifting lever W¹, substantially as set forth.
Second: In a mowing machine the combination of parts forming the improved
construction of tooth wheel driving gear and clutch gear substantially as described
with reference to Figures 1, 2, 3 and 4 and especially the boss T figure 3 on the spur
wheel S and shrouded pinion R arranged to slide thereon and to clutch therewith.

page_text: Third-The form and construction of the part A³ of the mowing machine
framing to adapt it to the improved driving gear and clutch gear and provided
with lug A for the stay to the radius bar substantially as described and shewn.
Fourth In a mowing machine the improved driving and clutch gear in
combination with the pawl wheel, pawl plate and pawls substantially as described
and shown.