Improvements in Sheep-shearing Machines.
Year: 1890

page_text: Date of Application, 18th Apr., 1890-Accepted, 21st June, 1890.
COMPLETE SPECIFICATION.
[Communicated from abroad by GEORGE WALTER BLANKS, BERNARD LEFEBure,
and FREDERICK JOHN BIRD, of Sydney, in the Colony of New South Wales,
Engineers.]
Improvements in Sheep-shearing Machines.
I HENRY MOY THOMAS of 60 Chancery Lane, London in the County of Middlesex,
Patent Agent 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:
The object of this invention is to save time and labour and to construct a sheep
shearing machine which when in operation will be cool and with working parts so
arranged as to be rapidly removed if necessary, for shearing sheep or other animals
or beasts.
In the accompanying drawings in which the same or similar parts are indicated
by like letters of reference Figure 1 is a sectional elevation of the machine horein-
after described. Figure 2 is a plan with the front and back partly uncovered.
Figure 3 is a cross section at Z Z in Figure 1.
This machine consist of a case A of bronze, brass or any other suitable material
terminating at its foremost end in a box B a space or water jacket a¹ is formed
inside the case A and box B for keeping the apparatus cool by passing water through
it, the water entering through the pipe and returning by way of the annular
space c in the bearings C to the outlet pipe d' or vice versa. Inside the case A at
the back end is inserted the sleeve or long bearing C which fits at a and b and which
is capable of rotating in the case A, an annular space e¹ is cut in the bearing C and
a segment flet in; the pin g¹ being screwed into the segment f1 holds the
bearing C in position, at the same time allowing it free rotary movement. The
back of the bearing C terminates in a cup D, over the cup D fits another cup E of
bronze, brass or other suitable material with bearing faces in contact with the cup D
at cc, a pin or spindle F of steel or other suitable metal is centred through the
cups D and E and held in position by the screws d and e forming a cup joint. On
the pin F, capable of revolving freely on it, is fitted a bevel wheel G of bronze or
other suitable metal; a spindle H of steel or other suitable metal passes through the
bearing Chaving a recess I in its length for lubricating purposes. The recess I is in
connection with the annular space in the bearing C which is charged with a
lubricant through the hole which is closed by the screw j¹.
.
At the back end of the spindle H is rigidly attached the bevel wheel J of bronze
or other suitable metal which acts in contact with the bevel wheel G. The opposite
end of the spindle H is thickened out to form a disc K into which is loosely fitted a
pin of steel or any other suitable metal eccentrically, this pin f has a slide block g
at its end which acts in contact with a guide which is on the oscillating bar L.
The oscillating bar L of steel or any other suitable metal, preferably of steel, is
pivotted at and k in the bearings and m which may or may not be removable, a
space n being left for wear; o is a bearing piece on the oscillating bar L which is in
contact with and slides over the wearing piece p which may or may not be removable;
at the front of the oscillating bar L are two or more pins q and r which receive
the cutter M which is kept in position by the spring_s, the screws t and u are for
fastening the comb N to the bottom of the box B. The cover O is fastened to the
top of the box B by the screws and can be removed readily, into the cover O is
screwed a tension screw w of steel or any other suitable metal with lock nut the
lower part of the tension screw w enters the top of the oscillating bar L its point y
being in contact with the centre Z of steel agate or any other suitable material which
is let into the oscillating bar L to reduce friction to a minimum.

page_text: The cap E has a bearing a* in its centre, through which passes the spindle P
which is lubricated from the chamber which is closed by the screw, to the
spindle P is rigidly attached the bevel wheel Q in contact with the bevel wheel G
the spindle P passing through the centre of the pin F at *. To the spindle P is
attached the coupling R at c for connecting the flexible rope S. The coupling R
consists of an elongated nut d* screwed taper into which is screwed a nipple e* with
slots cut transversely to the thread g* and having a hole h* through its centre
into which is inserted the end of the flexible rope S and the nipple e* is screwed up
tight.
Motion is communicated to the flexible rope S from any source of power and
transmitted to the spindle P and bevel wheel Qthence to the bevel wheels G and J
and the spindle H or it may be communicated direct to the spindle H without the
intervention of the bevel wheels Q, G, and J by coupling the flexible rope S direct
to the spindle H. The spindle H revolving rapidly gives motion to the pin f which
is eccentrically fitted in the disc K, the pin f has a slight travel backwards and
forwards in the direction of the length of the spindle H owing to the arc described
by the guide when oscillating with the oscillating bar L the slide block g which
must of necessity be circular in horizontal section is always perpendicular to the
bottom of the box B. The oscillating bar L on its pivots j and k oscillates to
the right and left by means of the guide h which is circular in plan and with it the
cutter M which is held in position over the fixed comb N by means of the spring s;
the tension screw to is adjusted to place sufficient pressure on the oscillating bar L
and thus the cutter M and is locked by the lock nut .
Water enters the case A
at & circulates through the box B and returns by way of the annular space c¹ to the
outlet pipe d or vice versa thus keeping the apparatus cool when in operation.
I do not claim the cutter and comb.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what 1
claim is :-
1. The combination of the parts marked S. R. E. D. F. Q. G. J. de and C with
the spindle H substantially as and for the purpose herein set forth.
2. The combination of the parts marked K, f g h and the oscillating bar L with
the spindle H substantially as and for the purpose herein set forth.
3. The combination of the oscillating bar L with the cutter M and the comb N
substantially as and for the purpose herein set forth.
4. The combination of a tension screw with an oscillating bar substantially as and
for the purpose herein set forth.
5. In a sheep shearing machine the combination of a case and box with a water
jacket substantially as and for the purpose herein set forth.
Dated this 18th day of April 1890.
AYRTON & THOMAS,
Agents for the Applicant.