Improvements in Clipping Machines for Wool or Hair.
Year: 1891

page_text: Date of Application, 22nd June, 1891
Complete Specification Left, 22nd Dec., 1891-Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Clipping Machines for Wool or Hair.
We, PHILIP ASHBERRY, Burngreave Road, Manager, and WALTER BARNES,
Intake Road, Ivory Carver, both of Sheffield in the County of York, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements upon the clipper described and illustrated
in the Specifications and drawings of the Patent No. 6962, granted to us on the
sixth day of May 1890.
::
It refers more particularly to certain improvements in the manner and means of
regulating the tension or pressure of the cutter upon the comb; the method of
holding the comb in position, and in the joint driving-mechanism.
;
The object of the improvements connected with the "tension," and with holding
the comb, is to simplify the mechanism, and to enable the parts to be adjusted
without removing the cover of the casing and in the joint driving-mechanism, to
enable the joint to be turned to any angle without interfering with the perfect
action of transmitting the power from the flexible shaft of the motor to the
clipper.
The vibrating arm is supported between two circles of antifriction balls placed
in annular grooves formed in the top and under face of the arm, and in the face of
two collars or faces formed upon a pin the shank of which passes through a bearing
in the body of the casing, and can be adjusted by means of a screw on the outside
of casing, so as to press the cutter upon the comb with any degree of force.
The comb is held between the casing and a clipplate, the said clipplate
being drawn down upon the comb by two screws which pass through the casing
and can be turned from the outside, instead of having to remove the cover or
loose part of the casing as heretofore; thus by slackening the screws the comb
can be removed and replaced with the greatest facility.
The transmission of driving power or rotary motion from the flexible shaft to the
vibrating arm through the universal joint is accomplished by means of three
toothed wheels of bevel or mitre form.
This
On the end of a short shaft that forms practically the end of the driving shaft
we fix a bevel pinion, and upon the axis of the joint we fix a corresponding bevel
wheel, which also gears into another similar bevel pinion fixed upon the end of the
eccentric or driving shaft which imparts direct motion to the vibrating arm.
arrangement permits of every angle being obtained by the clipper that is necessary
in clipping, without any strain on the mechanism transmitting the motion through
the joint.
T
1001
ROBT. F. DRURY, Fel. Inst. P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Clipping Machines for Wool or Hair.
We, PHILIP ASHBERRY, Burngreave Road, Manager, and WALTER BARNES,
Intake Road, Ivory Carver, both of Sheffield in the County of York, 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 —
This invention relates to improvements upon the clipper described and illustrated

page_text: in the Specification and drawings of the Patent No. 6962, granted to us on the
sixth day of May 1890.
It refers to improvements in the manner and the means of regulating the
tension" or the amount of pressure put upon the cutter; the inethod of securing
the comb in position; and the construction of the joint through which the driving
motion is transmitted.
The object of the invention which relates to the tension," and to the method
of holding the comb, is to simplify the mechanism and to increase the facility of
adjustment and removal by the shearer, to whom time is a matter of great
importance, while the object of the improvement of the joint; is to enable the
clipper to be turned to any required angle without interference with the perfectly
smooth transmission of power from the Hexible shaft of the motor to the cutter of
the machine.
These various improvements are shown in the annexed sheets of drawings, in
which
Fig. 1, is a side view of the vibrating arm which carries the cutter, and the parts
by which the "tension" is regulated.
Fig. 2, plan of self-adjusting spring support.
Fig. 3, plan of so-called universal joint.
Fig. 4, edge view of comb and fastener.
Fig. 5, plan of underside of comb.
The vibrating arm K, is supported between two circles of antifriction balls
placed in annular grooves formed in the top face and the underside of the arm,
concentric with the centre hole and also in the solid cap SC, and collar C; the
shank of the pin P, fits into a supporting boss B, firmly secured to the bottom of
the casing A, by means of a short tubular shank passing through the casing and
having an external screw thread upon which is screwed the locknut N.
This locknut is provided on its underside with a circle of teeth T, or their
equivalents.
The tension screw TS, fits into the internally screw threaded tubular shank of
the pin P, and its raised facing R F, bears against the end of the short tubular
shank of the boss B and is retained in position by means of a spring catch D,
which engages with the teeth T.
Underneath the collar C, we place a spring support SS, provided with a screw
thread, and screwing upon the corresponding thread of the pin P', acting as a nut-
lock to the collar or screwed washer C; the extension picce or tail seen in both.
Figures 1, and 2, rests upon the inside of the casing A, preferably in a shallow
recess indicated at R.
When therefore the tension screw T S, is turned in the proper direction, its
action is to draw down the pin P, and the vibrating arm K, putting pressure upon
the cutter, and also upon the tail piece of the spring support SS, and we find that
this divided pressure prevents unequal action of the vibrating arm, which would be
very likely to cause friction; this arrangement also permits instantaneous alteration
of the "
tension" without removal of the cover of casing, or the stoppage of the
machine.
The transmission of power or rotary motion from the flexible driving shaft to
the vibrating arm, in such a manner that the clipper can be twisted into all the
positions required in clipping a sheep, is made through a so-called universal joint
shown in Fig. 3, which consists of three bevil wheels B W, of either equal or of
varying sizes, the teeth of which engage in the manner shown.
One of the said wheels is fixed upon the spindle of the cranks the centre wheel
is loose upon the axis of the joint J, and the third is fixed upon the short
spindle R', this arrangement permits of every movement and angle being obtained
by the clipper, that may be required in clipping, without putting any strain upon
the flexible shaft or other parts of the driving mechanism when transmitting the
rotary motion through the joint.
In Figs. 4 and 5 we show our method of holding the comb L, in such a manner

page_text: that both it and the cutter M, may be readily removed and replaced without
disturbing the other parts.
The comb is provided with slots N, and suitable screws O, are passed through
the bottom of the casing A, and take into a nut-piece N. P, or clip. The comb
may be placed between the nut-piece and the inside face of the casing, but we
prefer to place it underneath the casing as shown, and secure it by the screws O.
One part turn of the screws will enable the comb to be withdrawn."
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, or carried into practice,
we declare that what we claim is :-
1. In clipping machines for wool or hair, the improved arrangement of the
"tension screw TS, boss B, nut N, spring support $ S, and pin P, constituting
the means for putting on or regulating the pressure upon the cutter M, substantially
as hereinbefore described, with reference to the drawings, and to Fig. 1.
2. In the regulating mechanism of the cutters of clipping machines for wool
and hair, a spring support SS, placed under the vibrating arm or driver for the
purpose specified, and substantially as hereinbefore described and shown in
Figs. 1 and 2.
3. In clipping machines for wool and hair, the construction of the so-called
universal joint, through which the rotary motion is transmitted, and which allows
the clipper to be turned in any required direction, consisting of three bevil
wheels W, forming a train from the spindle R', attached to the flexible shaft, to
the crank or eccentric spindle S, the central wheel being carried by the axis of the
joint J, supported in the plates of each joint piece, substantially as hereinbefore
described and shown in Fig. 3.
4. In clipping machines for wool and hair, the arrangement and plan of securing
the comb L, to the casing A, of the clipper so that it may be readily removed
as shown in
and replaced, substantially as hereinbefore described, and
Figs. 4 and 5.
Dated the 21st day of December 1891.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.