Improvements in or relating to Hones or Whetstones.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Hones or Whetstones.
I, HENRY BIRKBECK, of the Firm of Tongue & Birkbeck, of 31, Southampton
Buildings, Chancery Lane, London, W.C., Fellow of the Chartered Institute of
Patent Agents, do hereby declare the nature of this invention (a communication
to me from abroad by John Dimmick Simmons, a citizen of the United States,
residing at Phoenix, in the County of Maricopa, and Territory of Arizona)
to be as follows:-
or
and
Hones whetstones according to this invention are made column-like i.e.
of circular shape or form with flat upper surface thereon to which latter the
implement to be sharpened is applied.
The object of this invention is to prevent a hone or whetstone from becoming
concaved and useless by ordinary or constant use. The usefulness of this inveṇ-
tion applies principally to hones; but is applicable to whetstones.
In the accompanying drawing is shown a plan view of a razor hone showing
the flat circular surface according to this invention.
A razor hone constructed according to this invention may advantageously be
three and one quarter inches in diameter (more or less); the average length of
a razor blade is about two and three quarter inches and in making an ordinary
stroke while honing a razor on a flat circular surface of three and one quarter
(34) inches in diameter about 80% of the entire surface of the hone will be
covered.
The surface of the hone (being of a circular form) makes it improbable to hone
from the same place on the hone two successive times, thereby making it possible
to wear the entire hone away in a true and level manner thus maintaining, an
even surface on the hone at all times; because of using from every position thus
producing an average and equal wear on the entire surface.
The cause of rough and wire edges on razors is due to the concaved condition
of the ordinary or well-known square or oblong hones now in common use since
after such old oblong or rectangular shaped hone or whetstone has become con-
caved from use it is impossible to produce a true and even edge; whereas a flat
circular surface hone according to the present invention will always produce a
true and even edge as long as such hone lasts.
Although the hone is shown of cylindrical form in the drawings it will be
obvious that the outer configuration may be other than exactly cylindrical as
same may be polygonal for instance octagonal.
1000
TONGUE & BIRKBECK,
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Hones or Whetstones..
I, HENRY BIRKBECK, of the Firm of Tongue & Birkbeck, of 31, Southampton
Buildings, Chancery Lane, London, W.C., Fellow of the Chartered Institute of
Patent Agents, do hereby declare the nature of this invention (a communication
to me from abroad by John Dimmick Simmons, a citizen of the United States,
residing at Phoenix, in the County of Maricopa and Territory of Arizona)
and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:―
Hones
ΟΙ
and whetstones according to this invention are made column-like i.e.
of circular shape or form with flat upper surface thereon to which latter the
implement to be sharpened is applied.
The object of this invention is to prevent a hone or whetstone from becoming
concaved and useless by ordinary or constant use. The usefulness of this inven-
tion applies principally to hones; but is applicable to whetstones.
Referring to the drawings left with the Provisional Specification herein same
is a plan view of a razor hone showing the flat circular surface according to this
invention.
A razor hone constructed according to this invention may advantageously be
three and one quarter inches in diameter (more or less); the average length of
a razor blade is about two and three quarter inches and in making an ordinary
stroke while honing a razor on a flat circular surface of three and one quarter
(3) inches in diameter about 80% of the entire surface of the hone will be
covered.
The surface of the hone (being of a circular form) makes it improbable to hone
from the same place on the hone two successive times, thereby making it possible
to wear the entire hone away in a true and level manner thus maintaining an
even surface on the hone at all times; because of using from every position thus
producing an average and equal wear on the entire surface.
The cause of rough and wire edges on razors is due to the concaved condition
of the ordinary or well-known square or oblong hones now in common use since
after such old oblong or rectangular shaped hone or whetstone has become con-
caved from use it is impossible to produce a true and even edge; whereas a flat
circular surface hone according to the present invention will always produce a
true and even edge as long as such hone lasts.
Although the hone is shown of cylindrical form in the drawings it will be
obvious that the outer configuration may be other than exactly cylindrical as
same may be polygonal for instance octagonal.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I.
claim is:
A circular or approximately circular hone or whetstone having a flat upper
surface to which the implement to be sharpened may thus be applied at any
point around same substantially as and for the purposes herein before described.
Dated this 20th day of December 1899.
TONGUE & BIRKBECK,
31, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.