Improvements in Sheep Shearing Machines.
Year: 1891

page_text: Date of Application, 3rd Nov., 1891-Accepted, 12th Dec., 1891
COMPLIM
SPECIFICATION.
Improvements in Sheep Shearing Machines.
I, GEORGE FREDERICK REDFERN, of the firm of G. F. Redfern & Co., the
General Patent Office, No. 4, South Street, Finsbury, in the County of Middlesex,
Patent Agents, do hereby declare the nature of this invention (a communication
to me by Frederick York Wolseley of the Union Club, Sydney, in the Colony
of New South Wales, Gentleman) 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 sheep shearing machines in which
power is communicated by means of a vibrating lever to a cutter reciprocating
above and in contact with a comb and it has been specially devised in order to
provide improved means of pivotting or an improved fulcrum for the vibrating lever
improved means of lubricating the pivot or fulcrum of said lever improved means
for supporting the rear end of said lever and improved adjusting the "tension
degree of contact between the cutter and the comb.
"
or
These improvements in sheep shearing machines consist first in the combination
and arrangement with a fixed upper side or cover of the machine and with the
vibrating lever of a pivotal ball bearing or a fulcrum consisting of a ball sitting in
a socket in said lever and retained in place with the desired degree of pressure by
an inverted socket on the end of a bearing screw in said upper side or cover. They
consist secondly in the peculiar construction of lubricator in the bearing screw
having a cavity or receptacle for the lubricant a funnel or pipe reaching close to
the bottom of said cavity a conduit to the top of the ball bearing and a receiver
with conduit to the bottom of said ball bearing. They consist thirdly in the
combination and arrangement with the rear end of the vibrating lever of a rocking
rest or support consisting of a bulb-ended stud whose other end is part of a sphere
and rests within the hollow of a temper screw in the lower frame or case of
the machine. They consist fourthly in the combination and arrangement with the
vibrating lever with a frame or casing having a fixed upper side or cover of the
bearing screw above the pivotal ball bearing and the rear temper screw whose
hollow contains the pointed and spherical ended stud. They further consist in the
novel combinations and arrangements of mechanical parts hereinafter particularly
set forth. It is not essential to this invention what means are used to give motion
to the rear end of the vibrating lever nor of what characteristics the cutter and
comb partake so long as said cutter has a to-and-fro motion above said comb.
But in order that this invention may be clearly understood reference will now be
made to the drawings herewith in which
Figure 1 is a plan with upper side or cover removed and
Figure 2 a longitudinal section respectively of a sheep shearing machine
embodying the present improvements.
Figure 3 is an enlarged section of the vibrating lever and
Figures 4 and 5 plan and elevation of the motion block for the rear end of the
vibrating lever.
The revolving shaft A passing through sleeve B which forms a
bearing for it
has on its end a disc A with crank pin A holding thereto a roller A³ which
roller takes into cavity or hollow A' of motion block A which is part of a sphere
and is rotated into concavity C¹ of rear end of vibrating lever C and is held
vertically in place by enlargement or ring A. The lever C is supported at its
rear end in socket D by bulb-end D2 of stud D whose lower end D³ formed as part
of a sphere (with preferably a radius equal to the length of said stud) takes upon
liner D in hollow D' of temper screw D' in screwed socket D' of the lower frame

page_text: or casing B¹ of the machine. D' is a catch spring taking into notches in the underside
of head D. The lever C is fulcrumed or pivotted on ball E in socket E¹ let into
said lever and said.ball is held in place by upper socket E2 abutting against the
screw E3 through screwed 'socket E' in upper fixed frame or casing B' (fastened to
lower casing B by screws B2). This screw.E. has cavity or receptacle E' into
which is inserted funnel or pipe E and it further has a set screw. E' to permanently
fasten it in position. The front end of lever C spreads into fingers C² with pins
or pintles taking into holes in the cutter F which is in contact with comb F¹
attached to front end of lower casing B¹.
t
In operation the shaft or spindle A is revolved by means well understood and
reciprocates the lever C by causing roller A³ on crank pin A³ to move block A
sideways to-and-fro while it plays freely up and down in cavity A*. The ball E
holds said lever C to a fulcrum or pivot and the cutter F is thus reciprocated above
comb F. The "tension" or degree of contact is regulated roughly and at the
same time the frictional adjustment of the ball E in bearings E' and E' is made by
movement of bearing screw E³ in socket E' and at the desired degree it is locked
by set screw E. The "tension" is more minutely regulated from time to time by
movement of head D which may be milled for the purpose which screwing up
hollow temper screw D will cause stud D to lift rear end of lever. C on fulcrum
ball E so that the forward end C' will press with greater force upon the cutter. F.
During the movement of lever C it has a perfect rear support in the stud Das
the upper bulbed end D2 being fixed in socket Dit will roll on its spherical
periphery D³ on liner D with a minimum of friction. The cavity Eis supplied
with lubricating oil through funnel E and this funnel reaching close to the bottom
of said 'cavity prevents escape of said oil no matter in what position the machine
may be placed. Conduite supplies lubricant to the top of ball E and receiver.e
with conduit e supplies the oil (which escapes from the top of said ball E) to the
bottom bearing E¹.
Having, now particularly described and explained the nature of this said inven
tion and in what manner. the same is to be performed I declare that what I
claim is:
First. In sheep shearing machines of the class set forth the combination and
arrangement with a fixed upper side or cover and a vibrating lever (having. a rear
support) of a pivotal ball bearing or fulcrum consisting of a ball held between
sockets in said upper side or cover and in said lever substantially, as herein
described and explained.
Second. In sheep shearing machines of the class set forth the combination and
arrangement with a cover such as B' fixed to casing such as B₁ say by fastening
screws such as B and with a vibrating lever such as C having a rear support of a
ball such as E bearings such as E and E' and bearing screw such as E3 sub-
stantially as herein described and explained and as illustrated in the drawing..
.
Third. In sheep shearing machines of the class set forth the combination: and
arrangement with a vibrating lever such as C having a pivotal ball bearing. such
as EE E of a hollow bearing screw such as E' having receptacle such as E
inverted funnel or pipe such as E' and conduit such as e.and the combination and
arrangement with the receptaclé such as E' and conduit such as e of a receiver such
as e¹ and conduit such as e substantially as herein described and explained and
as illustrated in the drawings.
1
Fourth. In sheep shearing machines of the class set forth the combination and
arrangement with a vibrating lever such as C pivotted say as at E and having a
bearing from a cover such as B2 of a supporting stud such as D having (preferably
a bulb end such as D2 and) a spherical end such as D³ the socket such as D' temper
screw such as D with hollow or cavity such as D socket such as D' and catch
spring such as D' substantially as herein described and explained and as illustrated
in the drawing.
Fifth. In sheep shearing machines of the class set forth' the combination and

page_text: arrangement with the frame or casings fast together and a vibrating lever contained
therein pivotted or fulcrumed at or about mid length upon a ball of a bearing screw
in the upper casing or cover upon holding said ball and a temper screw at the rear
from the lower casing or frame adjustably pressing upwards on the rear end of
said lever substantially as herein described and explained.
Sixth. The particular combination and arrangement of mechanical parts described
and shown all together forming an improved sheep shearing machine substantially
as herein set forth and explained and as illustrated in the drawings.
Dated the 3rd day of November 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.