Improvements in Machines for Shearing, Cutting or Clipping Wool, Hair, or the like.
Year: 1897

page_text: Date of Application, 23rd Oct., 1897
Complete Specification Left, 20th July, 1898-Accepted, 27th Aug.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Machines for Shearing, Cutting or Clipping Wool,
Hair, or the like.
I, FREDERIC BURGON, of La Plata Works, Malin Bridge, Sheffield, in the West
Riding of Yorkshire, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to mechanically driven shearing machines and it con-
sists in certain improvements hereinafter more particularly specified, the object
being to obtain a more uniform contact between the cutter and the comb whereby
both the capacity of the machine and the quality of the work done is materially
enhanced.
According to this invention the rocker bar is so constructed and arranged that
it is supported at its rear end behind the point at which the actuating power is
applied to it, thereby increasing its leverage behind the point of pivot and there-
fore increasing the pressure at its forward end.
One method of carrying this invention into practical effect is to crank up the
rear end of the rocker bar so that it extends over the crank disc on the driving
shaft, the rear end of the said bar being supported by either a block, or a roller
mounted on a pin carried by the rocker bar the said block or roller being adapted
to slide or roll upon a suitable path formed on or fixed to the case of the apparatus,
the connection between the block or roller and the pin carrying it being such as
will provide play for the unequal wear of the comb and cutter.
As an alternative construction the rear part of the rocker bar may be straight
and the position of the driving shaft lowered so that the crank pin engages with
a depending boss or its equivalent.
As a further modification the rear end of the rocker bar may be supported by
a quadrant adapted to rock on the bottom of the casing and having a clearance
hole through it for the passage of the actuating shaft.
The cutter and the comb are of the ordinary form and are secured to the for-
ward end of the rocker bar and to the bottom part of the casing respectively in the
usual manner.
The rocker bar spindle is mounted in sleeve bearings screwed into the top and
bottom of the case and it has a shoulder fitting into a cupped recess in the rocker
bar through which it passes, the tension being applied to the top of the bar by
means of a screw in the usual manner.
Motion is imparted to the rocking bar by means of a ball or slide carried by
the pin of the actuating crank in the well-known manner.
Datel 1001
1004

page_text: Improvements in Machines for Shearing, Cutting or Clipping Wool,
Hair, or the like.
I, FREDERIC BURGON, of La Plata Works, Malin Bridge, Sheffield, in the West
Riding of Yorkshire, Manufacturer, do hereby declare the nature of this inven-
tion 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 mechanically driven shearing machines, and it con-
sists in certain improvements hereinafter more particularly specified, the object
being to obtain a more uniform contact between the cutter and the comb whereby
both the capacity of the machine and the quality of the work done is materially
enhanced.
According to this invention the rocker bar is so constructed and arranged that
it is supported at its rear end behind the point at which the actuating power is
applied to it, thereby increasing its leverage behind the point of pivot and there-
fore increasing the pressure at its forward end.
One method of carrying this invention into practical effect is to crank up the
rear end of the rocker bar so that it extends over the crank disc on the driving
shaft, the rear end of the said bar being supported either by a block, or by a
roller mounted on a pin carried by the rocker bar, the said block or roller being
adapted to slide or roll upon a suitable pathway formed in or on the lower half
of the casing of the apparatus, the connection between the block or roller and the
pin carrying it being such as will provide play for the unequal wear of the comb
and cutter.
As a modification the rear end of the rocker bar may be supported by a quadrant
adapted to rock on the bottom of the casing and having a clearance hole through
it for the passage of the actuating shaft.
The cutter and the comb are of the ordinary form and are secured to the for-
ward end of the rocker bar and to the bottom part of the casing respectively in the
usual manner.
The rocker-tension spindle is mounted in sleeve bearing threaded into the
lower half of the casing and it has a shoulder which fits into a cupped recess in
the rocker bar through which it passes, the tension being applied to the top of
the bar by means of a cap threaded into the top half of the casing in the usual
manner.
Motion is imparted to the rocking bar by means of a ball or slide carried by
the pin of the actuating crank in the well-known manner.
In the accompanying drawing which illustrates this invention:-
Figure 1 is a view in longitudinal section.
Figure 2 is a view in transverse section on line x x Figure 1.
Figure 3 is a view in plan.
Figure 4 is a view in longitudinal section, and
Figure 5 is a view in transverse section on line y y Figure 4 showing a modifi-
cation.
Throughout the views similar parts are marked with like letters of reference.
Referring to the drawings, A designates the sliding block or roller, B the path-
way on which it travels, C the bearing, D the rocker bar, E the rocker-tension
spindle, F the tension nut, G the sleeve bearing, H the bottom half of the casing,
K the cutter, L the comb, M the driving or actuating shaft, N the crank disc,
O the crank pin and P the crank pin ball.

page_text: The reciprocating movement is given to the rocker bar D by the crank pin 0
which is carried by the disc N on end of actuating shaft M which is caused to
revolve by any mechanical means. The crank pin ( works in the ball P which
slides in a vertically arranged hole located between its point of pivot and the
pin C a slot being provided for the crank pin O to work in.
One end of rocker
bar D is supported by the sliding block A which on path B and is connected to
the rocker-bar by the pin C. The cutter K is secured to outer end of rocker-
bar D and rests on comb L which is secured to lower half of casing H. The
spindle E serves both as a rocker and tension spindle of which the lower part
works through the bearing sleeve G screwed into the bottom half of casing H.
and the top part works into tension nut F which is screwed into top half of
casing J. The necessary amount of pressure between comb L and cutter K is
regulated by this nut.
As an alternative construction the bearing pin C may be arranged in a line
with the forward end of the rocker bar in which case the position of the driving
shaft would be lowered and the hole d extended downwards.
As a modification the pathway B may be arranged below the shaft M as shown
by Figures 4 and 5 in which case the supporting block A preferably takes the form
of a skeleton quadrant. To allow for play and unequal wear of the comb and
cutter, the hole in the block, roller, or its equivalent A is made bell-mouthed as
shown, or alternately the bearing pin C may be made slightly globular.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
(1) In a shearing, cutting or clipping machine, a rocker bar in which the
actuating power is applied between the rocker-tension spindle and a rear bearing
block, roller or equivalent device, the said rocker bar being cranked and having
its rear end adapted to be supported by the said bearing block, roller, or equivalent
device, substantially as set forth.
(2) In a shearing cutting or clipping machine, the combination of a rocker bar
pivotted on a tension spindle and supported at its rear end by a block, roller or
its equivalent, the driving motion being imparted to the said bar from a rotating
axle through a crank disc and pin at a point between its supported rear end and
its point of pivot, of a cutter carried by the forward end of the rocker bar, and of
a comb carried by the forward end of the rocker bar, and of a comb carried by the
casing, substantially as described.
(3) The combination in a shearing, cutting or clipping machine, of the rocker
bar D pivotted on the tension spindle E, of the cutter K mounted on the forward
end of the rocker bar, of the block or roller A supporting the rear end of the
rocker bar, of the driving shaft M, crank disc N and crank pin 0, of the block P
on the pin O which engages with the vertically arranged slot or path d in the
rocker bar, and of the comb L on which the cutter works, all combined, arranged
and adapted to operate, as set forth.
Dated this 20th 1
TI
1000
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Chartered Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.