Improved Construction or Arrangement of Sharpener for Knives and Razors.
Year: 1887

page_text: Date of Application, 24th Sept.. 1887
Complete Specification Left, 25th June, 1888
Complete Specification Accepted, 10th Aug., 1888
Improved Construction or Arrangement of Sharpener for Knives
and Razors.
I WILLIAM SPEIRS SIMPSON of 49 Battersea Park Road, Surrey, Civil Engineer
do hereby declare the nature of my said invention to be as follows:-
The object of this invention is to construct a knife sharpener in a novel manner
whereby the blade is laid comparatively flat upon the article and the edge sharpened
with a long incline corresponding to the blade of a knife or nearly so, so that a better
cutting edge is produced than that usually obtained by the wheel or disc arrangement
of knife sharpener or by that of the steel or its equivalent.
For the purpose of my invention I arrange between two shoulders or buttons on a
stem a couple of inclines or parallel surfaces between which I form or arrange a
roughened surface or it may be a smooth one, as a sharpening medium against which
the flat side edge of the blade is brought into contact during a to and fro movement
the back of the blade bearing against the shoulder on either side as a guide.
If the shoulders are of steel à notch is formed in either one or both to serve as a
leveller of the edge before being sharpened.
The sharpening portion may be a block of Emery compound, of Stone, or other
material or in a piece with metal onds.
The shoulders may be separate pieces secured to a stem.

page_text: COMPLETE SPECIFICATION.
Improved Construction or Arrangement of Sharpener for Knives
and Razors.
I WILLIAM SPEIRS SIMPSON of 49 Battersea Park Road, Surrey Civil Engineer,
do hereby declare the nature of my invention 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 a knife sharpener in a novel manner
whereby the blade is laid comparatively flat upon the article and the edge sharpened
with a long incline corresponding to the blade of a knife or nearly so, so that a better
cutting edge is produced than that usually obtained by the wheel or disc arrangement
of knife sharpener or by that of the steel or its equivalent.
For the purpose of my invention I arrange between two shoulders or buttons on a
stem a couple of inclines or parallel surfaces between which I form or arrange a
roughened surface, or it may be a smooth one, as a sharpening medium against which
the Hat side edge of the blade is brought into contact during a to and fro movement,
the back of the blade bearing against the shoulder on either side as a guide. If the
shoulders are of steel a notch is formed in either one or both to serve as a leveller
of the edge before being sharpened. The sharpening portion may be blocks of emery
compound, of stone or other material or in a piece with metal ends. The shoulders
may be separate pieces secured to a stem.
My invention is shown in the annexed drawings in which Figure 1 is an elevation
and Figure 2-a section, through the line a, x, Figure 1, of a four sided knife
sharpener composed of four different grados of sharpening surfaces A, B, C, D,
upon either of which the knife or razor to be sharpened or set can be moved to
and fro.
E is a shoulder against which the back of the blade rests during the movement the
motion being from heel to tip transversely, instead of longitudinally as is usual.
F may be a fine file for first reducing the edge of the knife.
The arrangement of the sharpening surfaces are two fold so that both sides of the
blade may be operated upon in a similar manner.
G is a leather or other washer placed between the shoulders and the sharpening
or sotting blocks A, B, C, D for cramping them in position, the blocks A, B, C, D,
being arranged on a square socket piece H or it may be a triangular block if the
sharpening surfaces are three sided as at Figure 3 through which socket piece H, a
pin I connected to the handle J can be passed and be rivetted or burred over to clamp
the several parts together constituting an article according to my invention.
The sharpening bodies A, B C, D may be composed of separate blocks of emery
compounds of different grades or one or two of them may be of different grades and

page_text: the other two of stone such as Turkey stone, Arkansas stone, such as is usually used
for setting razors.
The sharpening blocks A, B, C, D may be cemented to the socket H or the ends
of the blocks may be so shaped as to dip under the centre piece F, if such a centre
piece be fitted and also into the shoulders to fix them in position.
K is a V slit by which the rough edge of a knife may be drawn smooth previous
to being sharpened.
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
The improved construction or arrangement of sharpener for knives and razors as
herein before described and substantially as shown by the annexed drawings.
vano 1000,
H. GARDNER,
166, Fleet Street, London,
Agent for the said W. S. Simpson.