An Improvement in Apparatus for Shearing Wool or Hair.
Year: 1890

page_text: Date of Application, 18th June, 1890-Accepted, 19th July, 1890
COMPLETE SPECIFICATION.
An Improvement in Apparatus for Shearing Wool or Hair.
I. GEORGE GATTON MELHUISH HARDINGHAM, of 191, Fleet Street, in the City of
London, Civil Engineer and Patent Agent, do hereby declare the nature of this
invention (a communication from The Silver's Patent Sheep-shearing Machine and
Flexible Shaft Company. Limited, of 13, Pitt Street, Sydney, in the Colony of New
South Wales,) 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 wool or hair shearing machines of the class to which Bown
and Capewells Patent dated 26 January 1885 No. 1107 refers, and consists of an
improvement in the apparatus described and claimed in the specification to Silver
and Coben's Letters Patent No. 17,270. hearing date 31st October, 1889.
In the accompanying drawings, Fig. 1 is a longitudinal vertical section of a sheep-
shearing apparatus embodying the present invention; Fig. 2 being a detail view
drawn to an enlarged scale.
A A is a vibrating lever turning about the axis of the pin B. Friction is
diminished by the use of a ball-bearing, which is adjusted by the cone-shaped nut C.
The latter presses against the bearing-cap D. The nut C is locked after adjustment
by a spring-catch secured to the body of the apparatus. The arm A of the
vibrating lever carries the movable knife-plate a. The vibrating lever is connected
to the rotating disc E by means of the fork A2, which is jointed to the arm A¹ by
the screw-pin a'. The fork A2 terminates in a head a², which engages in a hole
drilled in the face of the rotating disc. The disc E is mounted on the end of the
shaft E. The shaft E¹ is connected, by the universal joint E2, with the shaft E³ ;
the latter being attached to, and rotated by, a flexible shaft, which is omitted in the
drawings.
In Silver and Cohen's original construction, the arm A¹ carried a supporting roller;
such roller travelling on a curved track formed in the body of the apparatus.
According to the improved method of construction, the arm A¹ is supported by means
of an oscillating pin F, the head of which is spherical and engages in a hole drilled
in the under side of the arm. The bottom of the pin is larger than the head f, and
in shape resembles a section of a sphere it works in a hard steel cup F¹ fixed in the
body of the apparatus. The bottoin of the cup is flat.
The head of the pin moves in substantially the same plane as that in which the
vibrating lever A A' moves, by reason of the rounded bottom f* of the pin rolling
on the flat bottom of the cup; the arm A¹ being thus adequately supported.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I claim :-
1. In apparatus for shearing wool or hair, mounting the near end of the vibrating
lever operating the knife-plate upon an oscillating pin substantially as herein described,
with reference to the accompanying drawings.
2. In apparatus for shearing wool or hair, the combination, with the vibrating
lever A A, of the oscillating pin F having a spherical head and a rounded
bottom, substantially as and for the purpose set forth.

page_text: 3. In apparatus for shearing wool or hair, the combination, with the vibrating
lever A A, of the oscillating pin F and the flat-bottomed cup F, substantially as and
for the purpose set forth.
Datel this Lith day of 1800
G. G. M. HARDINGHAM.