Improvements in Cutting Apparatus Applicable Especially for Clipping or Shearing Animals,
Year: 1887

page_text: Date of Application, 12th Jan., 1887
Complete Left, 12th Oct., 1887
Complete Accepted, 12th Jan., 1888,
PROVISIONAL SPECIFICATION.
Improvements in Cutting Apparatus Applicable Especially for
Clipping or Shearing Animals,
We, ARTHUR GEORGE DAWSON of 14 Ivy Lane, Paternoster Row, in the City of
London, Publisher, and ALFRED RIDGWAY of Bank Street, Macclesfield, in the County
of Chester, Machinist, do hereby declare the nature of this invention to be as
follows:-
The cutting apparatus is composed of two straight blades having cutting teeth
formed along one edge of each in the manner described in the Specification of a
former Patent, No. 4626 in the year 1879. The blades are placed one over the
other and are held together by a spring clip made of a U form so as to embrace the
back of both blades and to bear along its edges against their teeth. In this way
the teeth of one blade are pressed against the teeth of the other to bring them when
passing one over the other into the close contact necessary for obtaining a true
shear or scissor like cut.
A to and fro end way reciprocating movement is given to the two blades by a cam
on an axis which is in a line with them-one side of the cam is used to give motion
to one blade whilst the opposite side gives motion to the other blade.
The ends of the blades which are towards the axis and the axis itself are
enclosed in a casing which serves as a handle for the person using the apparatus
to hold in his hand.
By thus placing the handle in a line with the blades the apparatus can be used
better and with greater freedom than when the handle is at right angles to the blades
as in clipping apparatus heretofore made.
The cutting blades and the spring clip which embraces them project from one end
of the handle and the axis above mentioned projects from the opposite end and has
coupled to it the end of a flexible driving shaft by which it can be driven-the shaft
I use is preferably formed of a coil of flattened wire.
The clip which embraces the cutting blades I stop from moving endwise by a
spring link fixed to the exterior of the casing.
A projection from this link is made to spring into slots formed through the clip.
A slot is also formed in each cutting blade for the projection to pass through.
Dated this 12th day of January 1887.
CARPMAEL & Co.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Cutting Apparatus Applicable Especially for
Clipping or Shearing Animals.
We, ARTHUR GEORGE DAWSON, of 14 Ivy Lane, Paternoster Row, in the City of
London, Publisher, and ALFRED RIDGWAY of Bank Street, Macclesfield, in the
County of Chester, Machinist, 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 cutting apparatus is composed of two straight blades having cutting teeth
formed along one edge of each in the manner described in the Specification of a
former Patent No. 4626 in the year 1879. The blades are placed one over the
other and are held together by a spring clip made of a Ụ form so as to embrace
the back of both blades and to bear along its edges against their teeth.
In this way the teeth of one blade are pressed against the teeth of the other to
bring them when passing one over the other into the close contact necessary for
obtaining a true shear or scissor like cut.
A to and fro endway reciprocating movement is given to the two blades by a cam
on an axis which is in a line with them-one side of the cam is used to give motion
to one blade whilst the opposite side gives motion to the other blade, or two cams
might be used one for each blade.
The ends of the blades which are towards the axis and the axis itself are enclosed
in a casing which serves as a handle for the person using the apparatus to hold in
his hand.
By thus placing the handle in a line with the blades the apparatus can be used
better and with greater freedom than when the handle is at right angles to the
blades as in clipping apparatus heretofore made.
The cutting blades and the spring clip which embraces them project from one end
of the handle and the axis above mentioned projects from the opposite end and has
coupled to it the end of a flexible driving shaft by which it can be driven-the shaft
we use is preferably formed of a coil of flattened wire.
The clip which embraces the cutting blades we stop from moving endwise by a
spring link fixed to a portion of the casing.
A projection from this link is made to spring into slots formed through the clip. A
slot is also formed in each cutting blade for the projection to pass through.
In the drawings hereunto annexed we have shewn apparatus constructed as above
described.
Figure 1 is a plan view of the apparatus and Figure 1 a cross section on the
line 1, 1, Figure 1. Figure 2 is a plan with the cover plate removed. Figure 3 is
a back view with the cover plate removed. Figure 4 a longitudinal section of the
apparatus with the cover plate removed and Figure 5 a longitudinal section of the
cover plate,

page_text: A A are the two straight blades having cutting teeth formed along one of their
edges. B is the U shaped spring clip by which they are embraced. Cis the cam for
giving a reciprocating to and fro motion to the two blados.
For this purpose the end of each blade which is towards the cam has a projection A¹
extending from it and having a notch formed in it into which the edge of the cam
enters. The projection A¹ from one blade comes on one side of the cam and the
projection A from the other blade comes on the opposite side as shewn at Figure 2.
In place of a single cam being so used to drive both blades, a separate cam might
be used for each blade and the wear upon the cam so distributed between two cam
surfaces instead of all the wear coming upon one.
D is the axis on which the cam is carried-it is mounted in bearings in the
hollow handle E. F is a cover plate for the handle E. G is a flexible driving
shaft attached to the end of the axis 1) and H a flexible coil forming a sheath or
guard around the exterior of the flexible shaft and fixed to the end of the handle E.
The handle and its cover F are formed to extend above and below the clip B to rest
upon the skin of the animal that is being shorn or clipped and enable the operator
to keep the cutting teeth from coming into too close proximity to the skin of the
animal which is being clipped or shorn and thereby prevent any cutting of the
skin. Endway movement of the clip B is prevented by a spring bolt K entering
corresponding holes formed through the upper and under sides of the clip. The
cutting blades A are also slotted for the bolt to pass through but the slots are
made of such a length that their end way to and fro movement is not interfered
with.
In order that the person using the apparatus may be able to arrest the movement of
the cutting blades whenever he desires to do so the cam is made capable of being
slidden to and fro along the axis so that a clutch surface on its end may be made to
engage with a corresponding clutch surface on the face of a collar on the shaft and so
be driven by the shaft or else be moved away and disengaged from the clutch
surface on the shaft so as not to be driven by it. The cam may be thus moved to
and fro by a stud I which passes through slots in the cutter plates A and by which
the cutter plates together with the cam can be shifted to and fro lengthwise of the
handle a distance sufficient to allow of the cam being clutched to or unclutched from
the driving shaft.
Any other suitable arrangement for clutching or unclutching the cam with its
driving axis might be used instead of the arrangement shown.
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. The construction of cutting or clipping apparatus substantially in the manner
herein before described and illustrated in the drawings annexed.
2. Cutting or clipping apparatus with the handle in a line with the reciprocating.
cutting blades instead of being at right angles thereto as heretofore and with the axis
by which motion is imparted to the blades also in a line with them substantially as
described.
3.-Cutting or clipping apparatus with the serrated cutting blades hold together
one over the other by a spring clip substantially as described.
Dadalhi 10:1
ninho 1007
"
CARPMAEL & Co.,
Agents for the Applicants.