Improvements in Mowers.
Year: 1890

page_text: Date of Application. 3rd Nov., 1890-4ccepted, 6th Dec., 1890
Improvements in Mowers.
A communication from A. HARRIS, SON & Co., of the City of Brantford, in the
County of Brant, in the Province of Ontario, Canada.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., do hereby declare the nature of this invention and in what manner the
eame is to be performed, to be particularly described and ascertained in and by the
following statement.
The object of the invention is to improve and simplify the construction of those
parts constituting the tilting and lifting mechanism of the machine, and it consists
in the formation and arrangements of the parts hereinafter more particularly
explained.
Fig. 1 is a perspective view of the improved mower.
Fig. 2 is an enlarged perspective detail partially in section, showing the connec-
tion between the cutter-bar and mechanism of the machine.
Fig. 3 is an enlarged detail of the lifting lever and connections therewith.
Fig. 4 is a view showing the connection between the pitman and knife.
Fig. 5 shows the socket on the knife, the cap which completes the joint between
the knife and pitman and the ball on crank of pitman.
A represents the coupling-bar pivoted on a pin a extending from the crank shield B
which is a portion of the main frame of the machine. The coupling-bar A extends
through and is loosely journaled in the sleeve C within which it is held by a pin b
fixed to and extending from the coupling-bar A. This pin extends through a
vertical slot made in the sleeve C which slot permits the said sleeve to be rocked
upon the bar A without permitting any longitudinal movement thereon. Suitable
arms D extend from the sleeve C and constitute the bracket on which the shoe E is
hinged. F is an arm extending upwardly from the sleeve C. A rod G is connected
as indicated at one end to the arm F and at its other end to a lever H pivoted at d
on the frame of the machine and provided with a suitable notched quadrant I for
the purpose of holding the said lever at any desired angle.
It will be seen that owing to the slot in the sleeve C the shoe and cutter-bar
connected with it may be by the motion of the lever H, set at any desired angle. The
push-bar Jis pivotted at one end on the pivot d and is rigidly secured at its other
end to the bracket K. which has a hole in it to fit onto a convex rim e formed on that
portion of the sleeve C where the slots for the passage of the pin bare made. Slots f
are made through the bracket K through which the pin projects.
In this way
the pin 6 forms the desired connection between the bracket K and sleeve C while
permitting sufficient freedom of movement to prevent any binding of the parts when
the cutter-bar is raised or lowered. The hole in the bracket K surrounding the
convex ring e forms a sort of ball and socket joint between the parts named. L is a
lever pivoted on the same pin on which the shoe E is binged. This lever L has a
heel g which extends behind the said lever and is intended to come in contact with
the shoe E or other part behind the pivot of the said shoe when the said lever Lis
operated for the purpose of raising the cutter-bar as hereinafter described.
M is a
chain connected at one end to the lever L and after passing underneath the shive
pulley N supported by the push-bar J is connected either directly to the lever U or
by means of the rod P as shown. Qis a spring connected at one end to the lever O
as indicated and at its other end to the tongue R, the said spring being so connected
that it may be adjusted with the view of increasing or decreasing its tension as
required. The said tension should be just sufficiently strong to carry the major
portion of the weight of the cutter-bar so that it will float over the ground without
resting its whole weight thereon. The lever O is loosely pivotted at the point

page_text: indicated; the bracket S to which the lever T is connected being independently
pivoted on the same pivot at the said lever 0.
When it is desired to raise the cutter-bar the lever T is drawn back so as to bring
a stop h formed on it against a step formed on the lever when by continuing
the pressure the said lever O is tilted on its pivot and owing to its connection through
the chain M with the lever L the said lever is likewise acted upon until it comes
in contact with the stop k. When the heel of the cutter-bár is raised the push-bar
pivoted as before specified permits the said elevation as does also the loose connection
between the bracket K and sleeve C before described.
I may mention here that as the lever O is independently pivoted the movement
of the parts connected with the cutter-bar does not affect the lever T.
It will of course be seen that the same rolling movement necessary for the tilting
of the cutter-bar might be obtained by forming a ball and socket joint on the end of
the bar A where it is connected to the frame of the machine in which case the sleeve C
would be rigidly connected to the said bar A.
On reference to Figs. 4 and 5 the form of connection between the pitinan and the
knife will be seen. It will be noticed that the pitman X has a crank formed on its
end and a ball W on the end of the said crank. This ball fits into a socket U wherein
it is held in position by the concave cap Y. This concave cap has a lip Z on one
side to fit into a hole m made in the heel of the knife V. A lug n is formed on the
opposite side of the cap Y to correspond with a similar lug extending from the socket U.
A hole is made through the two lugs through which the bolt o is passed which is
the only bolt used for holding the pitman in place.
It will be seen that a concave cap made as shown may be readily detached or fixed
in position by simply removing or tightening the nut on the bolt o."
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondent, and in what manner the
same is to be performed, I declare that what I claim is :-
1. A coupling-bar A pivoted at one end to the frame of the machine and connected
to the sleeve (to which the shoe of the cutter-bar is connected in combination with
an arm F fixed to the sleeve and connected to the pivoted lever H by the rod C
substantially as and for the purpose specified.
2. A coupling-bar A pivoted at one end to the frame of the machine and loosely
journaled in a sleeve C to which the shoe of the cutter-bar is connected the pin b
fixed to the bar A and extending through a vertical slot made in the sleeve C in
combination with an arm F fixed to the sleeve C and connected to the pivoted lever H
by the rod G substantially as and for the purpose specified.
3. A coupling-bar A pivoted at one end to the frame of the machine and connected
to the sleeve C to which the shoe of the cutter-bar is connected in combination with a
bracket K loosely journaled on the sleeve C and held by the pin which passes
through a slot made in the bracket K as indicated substantially as and for the purpose
specified.
4. A coupling-bar A pivoted at one end to the frame of the machine and loosely
journaled in a sleeve C to which the shoe of the cutter-bar is connected the pin b
fixed to the bar. A and extending through a vertical slot made in the bracket K
which is loosely journaled on the sleeve C and has a push-bar J connected to it
which push-bar is pivoted at its opposite end to the frame of the machine and with
mechanism for raising the cutter-bar substantially as and for the purpose specified.
5. The lever L pivoted on the pin on which the shoe E is hinged and having a heel
extending behind the said hinge a clain M or its equivalent connected to the lever
and passing round the shive pulley N is connected to the pivoted lever O in
combination with the spring Q connected to the lever at one end and at its other
end to some fixed point in the machine. substantially as and for the purpose
specified.
.
6. The lever L pivoted on the pin on which the shoe E is hinged and having a
heel g extending behind the said hinge a chain M or its equivalent connected to the

page_text: lever Land passing round the shive pulley N is connected to the pivoted lever O in
conibination with a spring and lever bracket S independently pivoted on the same
pivot as the lever O and provided with a step h designed to come in contact with the
step formed on the said lever O substantially as and for the purpose specified.
7. A socket U formed on a bracket connected to the knife B and designed to receive
the ball W formed on the end of the pitman X in combination with a concave cap Y
provided with a lip Z extending from one side of it to fit into a hole m and a lug n
on its opposite side to receive the bolt o substantially as and for the purpose
specified.
Dated this Third day of November 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant