An Improved Grinding Wheel.
Year: 1887

page_text: Date of Application, 5th May, 1887
Complete Left, 1st Feb., 1888
Complete Accepted, 2nd Mar., 1888
An Improved Grinding Wheel.
HENERY JOHN WEST of 44 Cheshire Street Bethnal Green London in the County
of Middlesex Wheel Maker do hereby declare the nature of this invention to be as
follows:-
Producing such matter by a combination of emery or any other hard cutting
substance with a preparation of congealed oils and sulphur with or without Gummy
matter. In carrying out my invention I propose to use either emery or other hard
cutting substances and then I mix these Substances with sulphur and any suitable oil
tar or bituminous matter, taking care all the ingredients be well mixed so that the
whole mass may be brought into a state of paste. The paste must then be submitted
to great heat to harden it sufficiently to admit it being used as a cutting or polishing
Tool.

page_text: I, HENRY JOHN WEST, of 44 Cheshire Street, Bethnal Green, in the County of
Middlesex 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 :-
This invention relates, more especially, to the manufacture of grinding wheels, the
cutting particles of which consist of emery, but it is also applicable to the manufacture
of grinding wheels composed of other hard cutting substances.
I mix emery, or other cutting substance, reduced to a sufficiently fine powder, with
sulphur, tar, or bituminous matter, gummy matter, and a preparation which I call,
congealed oil;" taking care that all the ingredients are thoroughly mixed together
so as to form a pasty mass. This mass is then moulded or otherwise reduced to the
desired form, and submitted to heat so as to harden it sufficiently to enable it to be
used as a grinding, sharpening, or polishing tool.
And in order that my said invention may be fully understood, I will now proceed
to describe the best manner I am acquainted with for carrying the same into effect.
I first prepare the compound, which I call "congealed oil," by taking 2 parts, by
weight, of linseed oil; 1 part of sulphur, and 1 part of lampblack or vegetable black,
and I mix these ingredients together, so as to form them into a pasty mass, applying
heat, when necessary, to facilitate the combination.
I then mix together 1 part, by weight, of the above described congealed oil,
2 parts of sulphur, 2 parts of gummy matter, such as indiarubber for example, 1 part
of oil, such as linseed oil for example, or of Stockholm tar, 1 part of bituminous
matter, such as asphalte for example, and from 40 to 70 parts of powdered emery or
other suitable cutting material. These ingredients are thoroughly mixed together
so as to assume a plastic state, and the compound so produced is then moulded
into the required shape and submitted to heat in the usual way.
In some cases the indiarubber may be omitted.
I do not confine myself to the particular proportions of the ingredients above
indicated, as they may be varied without departing from the nature of my invention.
Having now particularly described, and ascertained the nature of my said
invention, and in what manner the same is to be performed, I would have it under-
stood, that I am aware that the use of oil, sulphur, and gummy and bituminous
matters, has already been proposed in the manufacture of grinding wheels, especially
in the specification of a patent granted to G. Coles, J. A. Jaques and J. A. Fanshawe,

page_text: dated 2nd August 1862, No. 2193, and I make no claim generally to the use of those
ingredients in the manufacture of grinding wheels, but what I do claim is :-
In the manufacture of grinding wheels, the combination of powdered emery, or
other suitable cutting substance, with a bond or cement composed of the compound
which I call "congealed oil," sulphur, linseed oil, or tar, and bituminous matter, with
or without indiarubber, as hereinbefore described.
Dated this 31st day of January 1888.
H. J. WEST.
Per W. H. Beck,
115, Cannon Street, London, E.C.,
Agent.