Improvements relating to Horse Clippers Sheep Shears, and other Apparatus where Close Contact of the Parts is Required during Movement.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Horse Clippers Sheep Shears, and other
Apparatus where Close Contact of the Parts is Required during
Movement.
We, WILLIAM WALTER BARTON and ARTHUR THOMAS BARTON, trading as
Barion Brothers, of 97, New Oxford Street, London, W., Horse Clipping and
Sheep-Shearing Machine Manufacturers, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to secure the pressure or tension on the moving
parts of horse clippers, sheep shearers, or other apparatus, where the close contact
of the parts is required, during movement, in a simple and efficient manner, and
the invention consists in a novel application of ball, roller, or rocker bearings,
whereby the necessary pressure may be given without undue friction.
In carrying out this invention, we form a receptacle of trough shape, with a
central stem to carry the balls, rollers, or rockers.
The balls are inserted at one end, which is then suitably plugged up, and they
extend from the trough sufficiently to come directly into contact with the part
of the apparatus which is to move.
The stem before mentioned is threaded to enter a sleeve suitably carried, and
provided with a nut which is permanently fixed thereto, the sleeve being threaded
internally. When assembling the parts, the ball carrier is first secured in the
sleeve by screwing it onto the stem, and the moving parts are then placed in
position, and secured in any convenient manner.
The pressure is applied by unscrewing the nut, so to speak, which causes the sleeve
to eject the stem, and forces the ball bearings into contact with the moving parts,
thus giving the necessary pressure.
In this way, lock-nuts, springs, and other devices hitherto used for this pur-
pose, are dispensed with.
Dated this 26th day of April 1898.
NEWTON & SON,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements relating to Horse Clippers, Sheep Shears, and other
Apparatus where Close Contact of the Parts is Required during
Movement.
We, WILLIAM WALTER BARTON and ARTHUR THOMAS BARTON, trading as
Barton Brothers, of 97, New Oxford Street, London, W., Horse Clipping and

page_text: Sheep-Shearing Machine Manufacturers, 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 effect, in a simple and efficient manner, the
requisite amount of pressure or tension on the moving parts of apparatus where
the close contact of the moving parts is required, and the invention consists in
a novel application of balls, or their equivalents, as rollers or rockers, whereby
the necessary pressure may be given without undue friction.
For the purpose of explaining the invention, the improvements will be described
as applied to that class of apparatus known as a horse clipper.
There are many such in the market, and many proposals have been made io
use an apparatus of this character for shearing sheep, but hitherto without success.
According to our view, the reason is, that, the fibre of wool, being longer and
tougher than the hairs of a horse, a much greater pressure on the reciprocating
knife is required, to ensure that the cutters shall cut the wool, and the tension
then becomes so great, that it is practically impossible to reciprocate the cutter
bar, especially when the apparatus is power-driven through a flexible shaft.
Now, according to our invention we can obtain the requisite pressure to ensure
the proper cutting of the wool without interfering with the working of the cutter
bar.
In the accompanying drawings,
Fig. 1 is a plan view of a horse clipper or sheep-shearing apparatus, which
is one form of apparatus to which the invention may be applied.
Fig. 2 is a longitudinal section of the same; and
Fig. 3 is a front view.
Figs. 4 and 5 are details which will be more fully referred to. hereafter.
The nature of horse-clipping and sheep-shearing apparatus is now well known,
and we shall therefore only refer to such parts of the same in our description,
as are necessary to a proper understanding of the invention.
a is the comb or finger plate, and b is the reciprocating knife or cutter-bar.
Rivetted to the cutter bar b is a plate c, to which a reciprocatory motion is given
in any convenient manner, and this plate carries a bearing plate d of steel.
The cover e for the driving mechanism is formed with a boss, or enlargement f,
which is bored out to receive a loose internally threaded flanged sleeve g (see
detached view Fig. 4), and this boss forms an abutment for the pressure device.
The sleeve y is held in the boss f by the nut h, which is secured thereto by a pin,
or in any other convenient manner, the end of the sleeve being plugged, as shown.
Surrounding the sleeve 9, is a helical spring i, bearing at one end upon a
shoulder formed on the lower end of the sleeve, and at its upper end against the
end of a recess formed in the boss f, to receive the spring. Elastic pressure is
thus put upon the reciprocating knife b, allowing it to rise on meeting undue
obstruction.
The cover or abutment e is bolted to the finger plate a, or is secured thereto in
any other well known manner.
For the purpose of adjusting the pressure or tension, a metal piece k, trough-
shaped in cross section, and having, at the centre of its length, a stem 7, as shown
in Fig. 5, is employed.
In this trough k, means for overcoming friction are inserted, such means being
balls, as shown, or their equivalents, as, rollers or rockers.
The stem is threaded to correspond to the internal thread of the sleeve 7,
and the thread will be so formed that, when turning the nut on the sleeve in
the direction, as it were, to unscrew it, or from right to left, the stem of the
tension device will be driven outwards, the pressure will thus be put on the plate
of the cutter bar. By turning the nut in the opposite direction, the stem will
be drawn back, and the pressure will be released.

page_text: It will of course be understood that the application of this tension device to a
horse-clipper is described by way of example only, and that the invention is not
confined to such horse-clipper, sheep-shearer, or similar apparatus.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is: -
1. In apparatus for applying pressure to a surface moving in contact with a
fixed surface, the combination of a fixed abutanent, means for raising and lower-
ing a pressing-device in the abutment, and a pressing device, comprising anti-
friction appliances, all substantially as described.
2. In apparatus for applying pressure to a surface moving in contact with a
fixed surface, the combination of a fixed abutment, a flanged, internally-threaded
sleeve elastically mounted in the abutment, and secured by a nut arranged to
turn with the sleeve, and a pressing device, comprising a trough-shaped piece,
containing antifriction appliances, and having a threaded stem, to take into the
threaded sleeve, all substantially as described, and operating, in the manner
set forth.
3. The combination of a fixed plate, a reciprocating plate in close contact
therewith and means for securing the close contact, and comprising a fixed abut-
ment, means for raising and lowering a pressing device in the abutment, and
a pressing device having antifriction appliances, to bear on the reciprocating
plate, substantially as described.
4. The horse-clipping and sheep-shearing machine as herein shown and
described.
Dated this 95th day of Wabruare 1800
NEWTON & SON,
Agents for the Applicants.