Improvements in Machines or Apparatus for Outting or Clipping Wool or other similar Fibrous Products.
Year: 1890

page_text: Date of Application, 25th Feb., 1890-Accepted, 18th Apr., 1890
COMPLE
DIETITIVATION..
Improvements in Machines or Apparatus for Outting or Clipping
Wool or other similar Fibrous Products.
We, JOHN HOWARD, Machinist, and JOHN HENRY GEDDES, Woolbroker, both of
Sydney, in the Colony of New South Wales, do hereby declare the nature of our
invention for "IMPROVEMENTS IN MACHINES OR APPARATUS FOR CUTTING OR
CLIPPING WOOL OR OTHER SIMILAR FIBROUS PRODUCTS," and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
The machine or apparatus that forms the subject of the present application for
Letters Patent, consists of a comb and cutter of the ordinary type.
The cutter is operated by gear that is contained within the handle of the machine.
The comb is firmly secured to the underneath of the handle that forms the case con-
taining the operating gear. The upper side of the bandle, forming the case is so
constructed as to be capable of being readily removed, and will form a cover to the
operating gear. The underneath of the central portion of the cover is formed into
a solid boss that is bored and tapped to receive an adjustable pivot pin or fulcrum.
The rear end of the handle or case tapers away into a sleeve which will constitute a
bearing for the driving shaft.
The end of the driving shaft or spindle that enters the handle or casing is formed
into a crank (preferably a disc crank) the crank pin of which forms the axis of an
antifriction roller whose function will be hereafter referred to. The cutter is operated
by means of a lever of the 1st class, the forward end of which is formed into a
3 pronged fork, the outer prongs of the fork being provided, on their undersides with
studs that fit into corresponding holes formed in the cutter. The first class lever rocks
on the before mentioned adjustable pivot pin or fulcrum that is tapped into the boss
formed on the cover. The lower extremity of the adjustable pivot pin or fulcrum is
bulb-shaped or spherical and fits into a corresponding recess or socket formed in the
upper side of the first class lever. This recess, or socket, which is of peculiar con-
struction will be hereafter more fully described. The rear end of the 1st class lever
is forked, the sides of the fork forming two vertical cheeks between which the anti-
friction roller on the crank pin is free to move vertically. The rear end of the first
class lever is carried and supported by a segment of a roller or rocker, the periphery
of which rocks on a race formed on the bottom of the casing. The segmental roller
or rocker is connected to the lever and held in position by means of a set screw that
passes through a slot in the segmental roller.
In the accompanying drawings:
:-
Fig. 1 is a plan of the working parts of the apparatus the cover being
removed.
Fig. 2 is a longitudinal section, the fulcrum pin, driving spindle and crank being
in, elevation.
Fig. 3 is a plan view of the cover only.
Fig. 4 is a cross section on the line 1-2 of Fig. 2 particularly shewing the
segmental roller and race, and the attaching screw.
Fig. 5 is a detail sectional view on an enlarged scale of the socket in the 1st class
lever that receives the spherical end of the fulcrum or pivot pin.
A is the comb. B the cutter. C the underside of the casing. D the cover of
the casing. D¹ the tapped. boss that carries the fulcrum pin E. The 1st class
lever F rocks on the bulbed head' of the fulcrum pin E. The forward end of

page_text: the lever F is forked at ƒ ƒ ƒ, the undersides of the outer prongs of the fork
being provided with studs ₁ffitting into holes formed on the cutter B (see
Fig. 2). The rear end of the lever F is forked, the sides FF of the fork con-
stituting cheeks between which the roller g on the crank disc G is free to move
vertically. The crank disc G is carried at the extreme end of the driving spindle H,
the outer extremity of which is connected to any suitable driving gear. The rear
end of the casing or handle of the apparatus is tapered away and forms a sleeve H¹
that constitutes a bearing for the driving spindle H. In Figs. 2 & 4 may be seen
the segmental roller or rocker J that supports and carries the rear end of the
lever F.
The function of this rocker is somewhat peculiar. It will be seen by referring to
Fig. 2 that the lever F is supported at both ends, the outter B supporting it at
the forward end and the rocker J at the rear end. The rocker J is constructed of
such a form as to permit the lever F to reciprocate in a perfectly horizontal plane
(see Fig. 4) while at the same time the friction is reduced to a minimum. The
rocker is secured to the lever F by a set screw j that passes through the seg-
mental slot j' in the rocker J.
It has already been mentioned that the lever F is supported at both ends and rocks
on the fulcrum pin E placed about midway between its two extremities.
The fulcrum pin E is specially made adjustable for the purpose of regulating the
pressure or tension upon the cutter B. To this end the boss D on the cover is tapped
and the fulcrum pin E screwed into it so that the downward pressure of the fulcrum
pin on the lever F may be adjusted to the greatest nicety.
When the desired pressure or tension has been obtained, the pivot or fulcrum pin E
is secured by means of a lock-nut K (see Figs. 2 & 3). The socket in the lever F
that receives the pivot pin E is shewn in enlarged view at Fig. 5. The socket and
the bulbed end of the pivot or fulcrum pin will "together constitute a ball and socket
joint, that will allow a limited amount of play in any direction to the lever F, and will
thus compensate for uneven wear on the cutter B and permit of a perfect adjustment
of the tension. An annular recess is formed on the upper side of the lever F
around the socket to serve as a receptacle for the lubricant. The lubricant is
prevented from escaping from the recess by an undercut annular cap that is fitted
into the recess, (see Fig. 5). It will be seen that no matter in what position the machine
is placed it will be impossible for the lubricant to escape from the lubricating
chamber, but will be retained within the chamber by the cap 1.
The cover D is secured to the casing C by the two set screws d d¹ (see Figs. 1 & 3).
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is-
1. The adjustable fulcrum or pivot pin E carried by the upper side or cover of the
apparatus and bearing downwards upon the lever F as described and for the purposes
herein set forth.
2. The combination of the adjustable fulcrum or pivot pin E with the lock nut K
for the purposes of securing the permanency of any desired amount of tension or
pressure on the cutter B as specified.
3. The segmental roller or rocker J, supporting and carrying the rear end of
the lever F, and constructed of such a form (see Fig. 4) that the lever F shall
always reciprocate in one horizontal plane as described.
4. The socket in the lever F to receive the end of the pivot pin E (see Figs. 2
& 3) provided with an undercut annular cap as described as illustrated in the
drawings and for the purposes herein set forth.
5. In machine sheep shears, the first class lever F supported at both ends, rocking
on a fulcrum or pivot pin placed above it and receiving its motion direct from the
driving shaft as herein specified.

page_text: 6. The general construction, arrangement and combination of parts in our improved
machine or apparatus for shearing or clipping wool, or other similar fibrous products
as described, as shown in the drawings and for the purposes herein set forth.
Dated this 25th day of February 1890.
ELT & Co.,
33, Southampton Buildings, Holborn, London, Agents for the Applicants.