IMPROVEMENTS IN APPARATUS FOR SHARPENING HORSE CLIPPERS
Year: 1879

page_text: LETTERS PATENT to Charles Askew, of Grizedale, nr. Hawkshead, in the
County of Lancaster, for the Invention of "IMPROVEMENTS IN APPARATUS
FOR SHARPENING HORSE CLIPPERS."
Sealed the 20th April 1880 and dated the 28th October 1879.
PROVISIONAL SPECIFICATION left by the said Charles Askew at the Office of
the Commissioners of Patents on the 28th October 1879.
CHARLES ASKEW, of Grizedale, nr. Hawkshead, in the County of Lancaster.
"IMPROVEMENTS IN APPARATUS FOR SHARPENING HORSE CLIPPERS."
My Invention relates to a novel form of apparatus to be used for sharpening
horse clippers, such as the "Newmarket Horse Clipper."
An apparatus constructed according to my Invention consists of a frame,
preferably constructed of malleable cast iron. The frame carries a second frame
provided with an emery stone block, to which reciprocating movement is imparted
by a crank handle, which works a shaft and crank, which imparts reciprocating
movement by working in a vertical slot in a guide piece attached to the emery
stone frame. The throw of the crank is adjustable so that a longer or shorter
stroke may be imparted. The emery stone is reversible, and is provided with a
smooth side and a rough side, and is carried in a frame having a rail which works
in a dovetail groove in the main frame; above the emery stone, spanning the frame,
there is a bridge piece with a cross bearer spring which carries a screw down bolt,
which, when in operation, bears on a blade holder. The frame is provided with a
clamp for securing the machine to a bench or table.
The method of using the machine is as follows:-The machine is securely
fastened to a bench or table; the emery stone is fixed in its place with the rough
side uppermost, a small quantity of oil is applied to the base of the stone, then
the blade of the clipping machine to be sharpened is placed on the emery stone
with the smooth or face side on the stone, and a spring bridge piece or holder is
applied under the fixing screw which is screwed down until the requisite pressure
has been applied, which is ascertained by trying the driving handle. The holder
is provided with projecting nibs which fit into corresponding holes or slots in the
clipper blade; the machine is then set in motion and the reciprocating movement
of the emery stone roughly grinds the blades, after which the blade is released and
the emery stone reversed so that its smooth side is uppermost; the blade is again
secured in its place and the machine set in motion. In using the smooth or finishing
side of the stone no oil is required. The stones which I prefer to use in the machine
are those known as Geo. Hannay's Patent emery stones.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Askew in the Great Seal Patent Office on the 27th April
1880.
CHARLES ASKEW, of Grizedale, near Hawkshead, in the County of Lancaster.
"IMPROVEMENTS IN APPARATUS FOR SHARPENING HORSE CLIPPERS."
My Invention relates to a novel form of apparatus to be used for sharpening
horse clippers, such as the Newmarket horṣe clipper, or Clarke's horse clipper.
An apparatus constructed according to my Invention consists of a frame,
preferably constructed of malleable cast iron. The frame carries a second frame
provided with an emery stone block, to which reciprocating movement is imparted
by a crank handle, which works a shaft and crank, which imparts reciprocating
movement by working in a vertical slot in a guide piece attached to the emery
stone frame. The throw of the crank is adjustable so that a longer or shorter
stroke may be imparted. The emery stone is reversible and is provided with a
smooth side and a rough side, and is carried in a frame having a rail which works
in a dovetail groove in the main frame; above the emery stone, spanning the
frame there is a bridge piece with a cross bearer spring which carries a screw down
bolt, which, when in operation, bears on a blade holder. The frame is provided
with a clamp for securing the machine to a bench or table.
The method of using the machine is as follows:-The machine is securely fastened
to a bench or table; the emery stone is fixed in its place with the rough side
uppermost, a small quantity of oil is applied to the face of the stone, then the
blade of the clipping machine to be sharpened is placed on the emery stone with
the smooth or face side on the stone, and the spring bridge piece or holder is applied
under the fixing screw which is screwed down until the requisite pressure has been
applied, which is ascertained by trying the driving handle. The holder is provided
with projecting nibs which fit into corresponding holes or slots in the upper blade;
the machine is then set in motion and the reciprocating movement of the emery
stone roughly grinds the blade, after which the blade is released and the emery
stone reversed so that its smooth side is uppermost; the blade is again secured in
its place and the machine set in motion. In using the smooth or finishing side of
the stone no oil is required. The stones which I prefer to use in the machine are
those known as George Hannay's Patent emery stones.
The beforegoing being the nature, object, and purposes of my Invention, I will
now proceed to illustrate how my Invention may be practically applied, and to
describe a form and arrangement of apparatus such as is suitable for carrying my
Invention into practice, and for that purpose I have attached a Sheet of Drawings
illustrative of such apparatus, marked with letters and figures of reference corre-
sponding with those in the following explanation, like letters and figures being
used to denote the same or corresponding parts throughout the various views.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan of an apparatus for sharpening horse clippers according to my
Invention.
הז .

page_text: frame or box B in which is placed an emery stone block C; reciprocating movement
is imparted to the frame B and the emery block C by the shaft D and the crank
handle E through the crank F, the pin H of which works in the vertical slot J
formed in the guide piece K. The throw of the crank F is adjustable by the
screwed pin and nut L, so that a longer or shorter stroke may be imparted to the
emery stone C; the emery stone C has a smooth side and a rough side, and is
reversable, and its carrying frame or box B is provided with a rail or guide piece
M, which works in the guide N on the frame A. Above the emery stone C, and
spanning the frame A, there is a bridge piece and spring P which carries a screw
down bolt Q, which, when in operation, bears on the blade holder R shown in
Figures 4 and 5. The frame A is provided with suitable bolts or clamps for
securing to a bench or table.
Upon reference to Figure 4, R is the blade holder; S is a plan of the under blade;
T is a plan of the upper blade of a Newmarket machine. The holder for the under
blade S is made and positioned as indicated by a. The holder for the upper blade
T is made and positioned as indicated by b. The underside of the blades bears
against the emery stone C, and the screw bolt Q, by pressing upon the holder R.
keeps the blade in position on the emery stone C.
Upon reference to Figure 5, R is the blade holder; S is a plan of the under blade;
T is a plan of the upper blade of a Clarke machine. The holder for the under
blade S is made and positioned as indicated by d. The holder for the upper blade
T is made and positioned as indicated by e. The underside of the blades bears
against the emery stone C, and the screw bolt Q, by pressing upon the holder R,
keeps the blade in position on the emery stone C.
In operation, the blades of the horse clipper are fixed in the machine, as described
first, with the rough side of the emery stone uppermost, a small quantity of oil
being applied, the reciprocating movement of the stone C by the handle E effects
the sharpening which is afterwards set by an application of the smooth side of the
stone, no oil being requisite for the smooth side.
Having now described and ascertained the nature of my Invention, and shewn
how the same may be put into operation, what I claim as my Invention and secured
to me by Letters Patent as aforesaid is,--
First. The construction and arrangement of a machine for sharpening horse
clippers consisting of a reciprocating emery stone such as C, arranged and operated
substantially as herein described and shewn in the Drawings hereto annexed.
Second. The improved system of sharpening the blades of horse clippers by the
reciprocating movement of an emery stone such as C, arranged and operating
substantially as described and shewn in the Drawings hereto annexed.
In witness whereof, I, the said Charles Askew, have hereunto set my hand and
seal, this Twenty second day of April, in the year of our Lord One thousand
eight hundred and eighty.
CHARLES ASKEW, (LS.)