Improved Sharpening Device for the Blades of Edged Tools, and suitable also as a Razor Strop.
Year: 1891

page_text: Date of Application, 2nd Nov., 1891
Complete Specification Left; 2nd Aug., 1892-Accepted, 3rd Sept., 1892
PROVISIONAL SPECIFICATION.
Improved Sharpening Device for the Blades of Edged Tools, and
suitable also as a Razor Strop.
I, EDMOND JOSEPH FREWEN of 35 Bath Avenue, Sandymount, Dublin,
Accountant do hereby declare the nature of this invention to be as follows:
My invention relates to a device for sharpening edged tools, razors and the like
and consists in a light frame having a handle to hold the same in desired position
at one end of its length and at the other end a rectangular upturned portion, the
same height as the handle. In about the top of the handle and the top of the
rectangular portion referred to, I journal the ends of a screw shaped rotary
sharpener capable of revolving easily on its before mentioned bearings when the
instrument to be sharpened is passed longitudinally up and down the helical groove
of the screw sharpener. As soon as the blade to be sharpened is placed upon
face of the sharpener, the latter instantly adjusts itself to the proper bearing and
situation it should occupy in relationship to the blade to be sharpened, and so my
invention automatically places the blade and the sharpener in their proper
positions.
the
As there are two sides to my revolving screw sharpener, I prepare one side for
doing duty in roughly sharpening the blade edge and the other side for finishing
off to a fine keen edge. For a razor strop these faces or sides will be covered with
leather prepared after the same manner as existing flat razor strops.
For sharpening knives or tools the sharpener may consist of "Turkish Stone"
"Washita or other known useful stones for sharpening purposes, carved in
the required shape before referred to and mounted so as to revolve easily.
In the "hones" or
::
"strops
at present used for sharpening edged tools and
razors it requires some skill and practice to use them with the desired effect but my
invention can be used with superior results by those quite unable to sharpen
instruments after the present methods.
Dated this 2nd day of November 1891.
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Sharpening. Device for the Blades of Edged Tools, and
suitable also as .a Razor Strop.
I, EDMOND JOSEPH FREWEN of 35 Bath Avenue Sandymount Dublin
Accountant 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 :-
My invention relates to a device for sharpening edged tools, razors and the like,
and consists in a light frame having a handle to hold the same in desired position,
at one end of its length, and at the other end a rectangular upturned portion, the
same height as the handle.
In about the top of the handle and the top of the rectangular portion referred to,
I journal the ends of a screw shaped rotary sharpener, capable of revolving easily
on its before mentioned bearings, when the instrument to be sharpened is passed
longitudinally up and down the helical groove of the screw sharpener.
As soon as the blade to be sharpened is placed upon the face of the sharpener,
the latter instantly adjusts itself to the proper bearing and situation it should
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occupy in relationship to the blade to be sharpened. As there are two sides to my
revolving screw sharpener, I prepare one side for doing duty in roughly sharpening
the blade edge and the other side for finishing off to a fine keen edge. For a razor
strop these faces or sides will be covered with leather prepared after the same
manner as existing flat razor strops.
22
"
For sharpening knives or tools the sharpener may consist of "Turkish Stone'
"Washita," or other known useful stones for sharpening purposes, carved in the
shape before referred to and mounted so as to revolve easily. In the "hones' or
strops at present used for sharpening edged tools and razors it requires some
skill and practice to use them with the desired effect, but my invention can be used
with superior results by those quite unable to sharpen instruments with the present
appliances.
Referring to the accompanying sheet of drawings Fig. 1 shows a razor strop of
my improved construction, Fig. 2 the invention applied to a knife or tool sharpener,
Fig. 3 shows my invention when applied to "steels" used for sharpening carving
knives, and Fig. 4 shows the application of the invention to a file.
Referring to Fig. 1, 1 is a length of twisted wood or other suitable material
covered with leather and revolving in bearings in the frame 2, with a suitable
handle 3, by which the device is held, the other end resting on any support, or
being provided with a ring to hang on a nail or hook. In Fig. 2 the twist 1 is shown
in a box 4 of about the usual size of oil stones, and is formed of a material capable
of being used for the purpose of sharpening knives and such like edged tools. In
Figs. 3 and 4, 5 is the twist made of steel and revolving on a central pin 6 projecting
from the handle, a cap being fixed on the larger end to hold it on the pin. The
form of the transverse section of the revolving twisted part 1 in Figs. 1 and 2 and 5
in Figs. 3 and 4, varies according to the instrument or tool to be sharpened and
may be either convex, flat or concave, or as shown in Fig. 3 formed with hollow
grooves, the blade being sharpened upon the edges so formed.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1) An instrument for sharpening edged tools, consisting of a twist or screw of
suitable material, capable of revolving on an axis, substantially as described and
illustrated in the accompanying drawings.
(2) In a device for the sharpening of edged tools the revolving helically formed
part marked 1 in Figs. 1 and 2, and 5 in Figs. 3 and 4, substantially as illustrated
and described.
Dated this 2nd day of August 1899
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.