Improvements in Apparatus for Sharpening Razors, Knives, and other Cutting Instruments or Tools.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Sharpening Razors, Knives, and
other Cutting Instruments or Tools.
I, GEORGE FREDERICK BARNETT, of Ambleside, 94, Fairholt Road, Stoke
Newington, in the County of Middlesex, Commercial Traveller, do hereby declare
the nature of this invention to be as follows:-
My invention relates to apparatus for sharpening razors, knives and other
cutting instruments or tools.
According to my invention I construct a suitable base or stand on which I
mount a pair of rollers covered with leather, india rubber or other suitable material.
These rollers may or may not have razor paste, emery or other sharpening or
polishing material rubbed on or fed to their surfaces all as found desirable or
necessary. The rollers are parallel to each other, in contact and adapted to revolve
in opposite directions and one of them is suitably provided with a handle to be
turned by hand or with a pulley or the like if to be revolved by power and gearing
is arranged to communicate motion to the other roller.
The bearings of the rollers may be fixed or adjustable either permanently or
elastically.
The frame is provided with a dovetailed or otherwise constructed holder to
hold or clamp the razor blade or other tool or instrument and means are in some
cases provided for varying the distance between the holder and the point of con-
tact of the rollers to suit the width of the blade of different sized razors or the
like. The holder may be made to hinge or swivel or to slide in and out of the
frame or it may be made fixed all as found most convenient.
The frame is either held firmly by hand during the sharpening operation or it
is screwed or clamped to a table or elsewhere to hold it steady.
Dated this 16th day of Tahmam 1900
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
Improvements in Apparatus for Sharpening Razors, Knives, and
other Cutting Instruments or Tools.
I, GEORGE FREDERICK BARNETT, of Ambleside, 94, Fairholt Road, Stoke
Newington, in the County of Middlesex, Commercial Traveller, 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 improvements in apparatus for sharpening razors knives
and other similar cutting instruments or tools.
Figure 1 of the accompanying sheet of drawings represents in front elevation
a sharpening or stropping apparatus constructed according to my invention.

page_text: Figure 3 is a left hand elevation and
Figure 4 is a right hand elevation.
.
According to my invention I construct a suitable base or stand A provided with
supports B and C in which I mount a pair of rollers D and E covered with leather
indiarubber or other suitable material: These. rollers may or may not have razor
paste, emery, or other sharpening or polishing material rubbed on or fed to their
surfaces, all as found desirable or necessary. The rollers are parallel to each
other, in contact, adapted to revolve in opposite directions and one of them say D
is suitably provided with a crank and handle Fif to be turned by hand and with
speed multiplying gear in addition to the handle if desired or with a pulley or the
like if to be revolved by power. The roller D is further provided with a spur
wheel G, gearing with another spur wheel H mounted on the roller E which ensure
an equal and uniform rotation to each roller. The bearings of the rollers may be
fixed or adjustable either permanently or elastically but in practice I prefer that
the roller E shall be automatically adjustable and for this reason it is conveniently
made to run in an elongated hole in each of the supports B and C and it kept
constantly in contact with the roller D by means of springs I and K or some
other equivalent device. The roller 1 might be provided with elastic bearings
and the roller E with rigid bearings but it is on the whole preferable that the roller
which is or may be subjected to uneven strains (such as would be communicated
by the handle in turning the same) should not be capable of any displacement
or distortion except that caused by the razor or other instrument which is being
sharpened:
The frame is provided with a dovetailed or otherwise constructed holder to
hold or clamp the razor blade or other tool or instrument and means in some cases
provided for varying the distance between the holder and the point of contact
of the rollers to suit the width of the different sized razors or the like. The holder
may be made to hinge or swivel or to slide in and out of the frame or it may be
fixed all as found most convenient.
In the construction shown the support is provided with a lug or projecting
part L having a dovetail shaped slot Al, best seen in Figure 2, and the support B
is provided with a slot N see Figures 2 and 3 in which is mounted a rest O having
a lug or handle P and the support is provided with a screwed hole into which
goes a milled headed screw Q. The rest O is also provided with a slot R through
which the shank of the screw Q passes and when the rest O has been raised
sufficiently the screw Q is screwed up and clamps the said rest in position. In
order that it may not be necessary to undo the screw when removing the razor
or the like, the support B is provided with a gate S having a slot therein through
which passes a screw T and locking when moved forward under the catch U.
blade of the razor being wedge shaped or thereabouts in section is pushed into
the swallow tailed slot M as far as it will go when the edge of the razor is in its
proper position between the two rollers and the rest O is then fixed at the proper
height to support the shank of the razor. The gate S is then closed the handle F
is revolved in the direction of the arrow, Figure 4, and in due course the razor
is sharpened.
The
I wish it however to be understood that I do not limit myself to the particular
construction of holder shown as other constructions may be used without departing
from my invention.
The frame is either held firmly by hand during the sharpening operation or it
is screwed or clamped to a table or elsewhere to hold it steady.
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
1. In a sharpener for razors knives and other cutting instruments provided
with two sharpening rollers the combination of a base, having two supports

page_text: roller mounted in holes in the said supports and provided with a handle for
rotating same, a spur wheel on said roller, another roller mounted loosely in holes
in the said supports, a spur wheel on the latter roller gearing with the spur wheel
on the first roller, suitable springs for holding the second roller in contact with the
hrst roller and means for holding the razor or other instrument in position sub-
stantially as set forth.
2. In a sharpener for razors knives and other cutting instruments provided with
two sharpening rollers, the combination of a base having two supports a roller
mounted in holes in the said supports and provided with a handle for rotating
same, a spur wheel on said roller another roller mounted loosely in holes in the
said supports, a spur wheel on the latter roller gearing with the spur wheel on the
first roller, suitable springs for holding the second roller in contact with the first
roller a lug in one support provided with an angular slot to hold the end of the
razor a slot in the other support, an adjustable rest in said slot to hold the shank
of the razor, and a gate to close said slot substantially as described and shown.
5. The construction of sharpener as shown on the drawing.
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JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.