IMPROVEMENTS IN SHEEP SHEARS
Year: 1884

page_text: I, JOHN CLAYTON MEWBURN of 169 Fleet Street in the City of London Fellow
of the Institute of Patent Agents do hereby declare the nature of my invention
for IMPROVEMENTS IN SHEEP SHEARS to be as follows:÷
The object of this invention is to construct sheep shears in such manner that the
blades or cutters can be readily taken off when it is desired to sharpen or to change
them.
For this purpose each cutter is made distinct and movable and is fixed to the
body of the shears by means of a nut which can be screwed up or unscrewed by a
spanner.
In carrying out the invention I form near the outer end of one limb of the shears
or fix thereto, a plate which carries threaded pins equal in number to the cutters
to be secured to this limb; in a line with each pin is a tenon or projection on tho
said plate. Each cutter is formed at its inner end with a longitudinal slot or
opening which is made to slide upon the pin and tenon and guides the cutter into
place; a nut is then screwed upon the pin to tighten up and fix the cutter which
cannot turn because of the tenon. The other limb of the shears has a single blade
or cutter which may be secured in the same manner. When it is required to
remove the cutters in order to sharpen or to change them it is only necessary to
unscrew the nuts when the cutters may be slid off.
HALL
1 2004

page_text: I JOHN CLAYTON MEWBURN of 169 Fleet Street, in the City of London, Fellow
of the Institute of Patent Agents do hereby declare the nature of my invention
for "IMPROVEMENTS IN SHEEP SHEARS” 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 construct sheep shears in such manner that the
blades or cutters can be readily taken off when it is desired to sharpen or to change
them.
For this purpose each cutter is made distinct and removable and is fixed to the
body of the shears by means of a nut which can be screwed up or unscrewed by a
spanner.
Figure 1 of the annexed drawings is a face view of a pair of sheep shears
constructed according to this invention.
b
Each
I form near the outer end of the limb of the shears or fix thereto, a plate a,
which carries threaded pins o, equal in number to the cutters to be secured to this
limb; in a line with each pin is a tenon or projection d on the plate a.
cutter f is formed at its inner end with a longitudinal slot or opening 6 (see the
detached view, Figure 5) which is made to slide upon the pin c and tenon d and
guides the cutter into place; a nut g is then screwed upon the pin c to tighten up
and fix the cutter which cannot turn because of the tenon. The other limb h of
the shears has a single blade or cutter which may be secured in the same manner
or by screws, as shown. When it is required to remove the cutters, in order
to sharpen or to change them, it is only necessary to unscrew the nuts when the
cutters may be slid off.
Figure 2 is a face view and Figure 3 a side view of a modified form of the
invention in which in lieu of the tenons or projections d, Figure 1, there is a
shoulder & on the plate a against which the inner ends of the cutters frest and
which like the projections prevents them turning. In this case to opening 6 need
be merely a hole, as shown in Figure 4, to fit over the pins c. g, g are the screws,
as before, to screw upon the pins c. Figures 6 and 7 represent two forms of spanner
suitable for screwing up and unscrewing the screws g.
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:
Constructing sheep shears with cutters which are each distinct and removable and
are fixed to the body of the shears by means of threaded pins and nuts substantially
as hereinbefore described.
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