An Improved Grinding, Polishing, and Cleaning Material.
Year: 1895

page_text: An Improved Grinding, Polishing, and Cleaning Material.
I, PHILLIP HENRY WILKS, of Crump Meadow Colliery, Cinderford, in the
County of Gloucester, Engineer do hereby declare the nature of this invention to
be as follows:-
•
My invention has reference to an improved method of manufacturing, polishing
and cleaning powder from waste material, or material at present of no commercial
valuc.
In carrying my invention into effect I select a quantity of shale taken from the
ordinary collieries, preferably that layer which is immediately above the coal
seams, and then burn the material in a kiln, furnace or crucible for a certain
period, and then transfer it to a grinding mill for reduction into powder.
I prefer to pass the bunt pieces of material through ordinary crushing and
grinding mills and sometimes employ a current of air for carrying off the very fine
powder falling from the mill, so as to deposit it on the collection screen and allow
the heavier powder to fall into bins o receptacles arranged beneath the mill for
that purpose.
I collect the air carried powder from the screens and use it for
the purposes requiring the finest degree of polish while the other somewhat
coarse ground material I use for the purposes where a sharper action is
necessary.
I employ my powder with advantage upon knife cleaning, machines and knife
boards, and find it particularly useful when rubbed upon chamois leather or the
like for polishing purposes.
I also use my improved powder for grinding in cocks valves and for getting up
surfaces, and can, when so desired secure the powder to discs for driving on
spindles or to sheets in the ordinary manner now employed for producing emer)
cloth.
I do not limit the application of my invention to any particular form of
grinding machine or will which is to be employed for the purpose of reducing the
material to the powder form, and I employ any well known kiln or crucible for
caleming the shale.
1000
An Improved Grinding, Polishing, and Cleaning Material.
I, PHILLIP HENRY WILKS, of Crump Meadow Colliery, Cinde: ford, in the
County of Gloucester, Engineer 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 has reference to an improved method of manufacturing polishing

page_text: and cleaning powder from waste material, or material at present of no commercial
value.
In carrying my invention into effect I select a quantity of shale taken from the
ordinary collieries, preferably that layer which is immediately above the coal
seams, and I then burn the material in a kiln, furnace, or crucible, for a period
of about six hours, and then transfer it to a gunding mill for reduction into
powder.
I prefer to pass the burnt pieces of material through ordinary crushing and
grinding mills and sometunes employ a curiout of air for carrying off the very
fine powder falling from the mill, so as to deposit it on the collecting screen and
allow the heavier powder to fall into bins o receptacles arranged beneath the mill
for that purpose. I collect the au carried ponder from the scicens and use it
for the purposes requiring the finest degree of polish while the other somewhat
coarser ground material I use for the purposes where a sharper nction is
necessary.
I employ my ponder with advantage upon knife cleaning machines and knife
boards, and find it particularly useful when rubbed upon chamois leather on the
like for polishing purposes.
I also use my improved powder for grinding in cocks valves and for getting up
surfaces, and can, when so desired, secure the powder to discs for driving on
spindles or to sheets in the ordinary manner now employed for producing emely
cloth.
I do not limit the application of my invention to any particular form of
grinding machine or mill which is to be employed for the purpose of icducing the
inaterial to the powder form, and 1 employ any well known kiln o crucible for
calcining the shale.
"
Having now particularly described and ascertained the natme of my said inven-
tion, and in what manner the same is to bo performed 1 declare that what I
claim is
1. The manufacture and use of shale subjected to calcination and gunding for
the purpose of cleaning and polishing metallic and other surfaces.
2 The manufacture of polishing material substantially as herein before
descubed.
... 1241
1
1000
Dated the 16th day of July 1990.
MARKS & CLERK,
18, Southampton Buildings, Loudon, W.C., and
13, Temple Street, Bingham, Agents.