IMPROVEMENTS IN SHEARING AND CLIPPING APPARATUS
Year: 1873

page_text: LETTERS. PATENT to George Twigg, of Birmingham, in the County
of Warwick, Manufacturer, for the Invention of "IMPROVEMENTS IN
SHEARING AND CLIPPING APPARATUS."
Sealed the 10th June 1873, and dated the 9th April 1873.
PROVISIONAL SPECIFICATION left by the said George Twigg at the
Office of the Commissioners of Patents, with his Petition, on the
9th April 1878.
I, GEORGE TWIGG, of Birmingham, in the County of Warwick,
Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SHEARING AND CLIPPING APPARATUS," to be as follows, that
is to say:-
This Invention refers to apparatus to be employed chiefly in clipping
horses, and it consists in improvements in the means of adjusting, or
setting of the plates forming the shears or cutters.
The guide pins upon the lower plate are formed with cross heads
passing through slots in the upper plate and capable of being turned

page_text: to cross the slots after being passed through the top plate. When so
turned a thin forked cotter plate is slipped under each of the crossheads
of the guide pins, and thus secures the two plates together.
A wedge is formed under the heel of the upper plate, and housed in
a groove on the under side of the same, and bearing with its lower edge
on the lower plate; this wedge sets up the top plate and keeps the
teeth in positon with those upon the under plate. An adjusting screw
may be used in place of this wedge if preferred. A single pin formed
with a cross head may be employed independantly of the ordinary guide
pins if desired.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said George Twigg in the Great Seal Patent Office on
the 9th October 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
TWIGG, of Birmingham, in the County of Warwick, Manufacturer, send 1
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of April, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give 2
and grant unto me, the said George Twigg, Her special license that I,
the said George Twigg, my executors, administrators, and assigns, or
such others as I, the said George Twigg, my executors, administrators,
and assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN SHEARING AND CLIPPING
APPARATUS," upon the condition (amongst others) that I, the said George
Twigg, my executors or administrators, by an instrument in writing a
under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said George Twigg, do hereby declare the
nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, that is to say :-
This Invention refers to apparatus to be employed chiefly in clipping
horses, and it consists in improvements in the means of adjusting or
setting up the plates forming the shears or cutters.
The guide pins upon the lower plate are formed with cross heads
passing through slots in the upper plate, and capable of being turned
to cross the slots after being passed through the top plate. When so
turned a thin forked cotter plate is slipped under each of the cross heads
of the guide pins, and thus secures the two plates together.
A wedge is formed under the heel of the upper plate and housed in
a groove of the under side of the same, and bearing with its lower edge
on the lower plate; this wedge sets up the top plate and keeps the
teeth in position with those upon the under plate. An adjusting screw
may be used in place of this wedge if preferred. A single pin formed
with a cross head may be employed independently of the ordinary guide
pins if desired.
I will now proceed to describe my Invention more fully in detail by aid
of the accompanying Drawings, reference being had to the letters and
figures marked thereupon.
Figure 1 illustrates in elevation my improved apparatus for clipping
horses, the improvements consisting chiefly in the means of adjusting or
setting up the plates forming the shears or cutters.
(a, a) are the guide pins secured upon the lower plate (6) and shown
more clearly in the section of the plates Figure 2, and in the elevation
of the parts Figure 3, with the top plate (c) removed. The guide
pins (a, a,) are formed with cross heads, as seen in Figure 2, which pass
through slots (d) in the upper plate (c) shewn detached in Figure 4,
and capable of being turned to cross the slots after passing through the
top plate or formed rigid with the bottom plate (6), the slots in the
upper plate, in such case being cut as in Figure 4, and in practice I
find this arrangement preferable. To secure the two plates (b) and (c)
together I employ a thin forked cotter plate or bolt (f) shewn separately
in Figure 5, and which is slipped from the top side under each of the
cross heads of the pins (a, a,) as seen in Figure 1, and to set up the top

page_text: plate (c) and keep the teeth of the cutter plates in position, I introduce
under the heel of the top plate (c) a wedge piece, illustrated in Figure 6,
which is housed in a groove on the under side of the top plate (c), or
has a snug (e) fitting into a slot cut in the top plate (c), as in Figure 1,
and bearing with its lower edge or a portion of the same, shaped as a
peg (e¹) upon or into the lower plate (6).
Figure 7 is an elevation of my improved apparatus, having a single
cross head pin (9) instead to two, as already specified, the ordinary
guide pins being used, as shewn in Figure 8, with the top plate (h)
removed; the pin (9) is passed through a slot in the plate (7), and is then
turned across the slot, the forked cotter plate or bolt (i) is slipped in
from the lower side of the pin (9) an adjusting screw (4) being employed
for setting up and securing the parts in place of the wedge piece,
Figure 6, before described, the adjusting screw (4) passing through the
top plate (%) and bearing upon the surface of the lower plate.
Having thus described the object and nature of my said Invention,
and the manner in which the same is to be carried into effect, I
claim, without confining myself to these precise details, the pins (a, a,)
and (9) formed with cross heads for the purpose described.
I also claim the top plates (c) and (½), the forked cotter plates or
bolts (f) and (6), the wedge piece, Figure 6, and the adjusting screw
(k) employed in combination with the top plates, as herein described.
In witness whereof, I, the said George Twigg, have hereunto set
my hand and seal, this Seventh day of October, in the year of
our Lord One thousand eight hundred and seventy-three.
ABADAT
TAA