An Improved Method of and Means or Apparatus for Feeding, Abrading and other Medium to Grinding, Cutting and Polishing Mills.
Year: 1899

page_text: Date of Application, 22nd Aug., 1899
Complete Specification Left, 22nd May, 1900-Accepted, 30th June, 1900
PROVISIONAL SPECIFICATION.
An Improved Method of and Means or Apparatus for Feeding,
Abrading and other Medium to Grinding, Cutting and Polishing
Mills.
1, WILLIAM OLIVER BAILEY, of Excelsior Works, Wenlock Road, City Road,
London, E.C., Glass Manufacturer, Silverer and Beveller, do hereby declare
the nature of my said invention to be as follows:-
-
The object of my invention is to provide a new or improved method of and
means or apparatus for feeding emery, sand, rouge, or other grinding or polish-
ing mediums to the face or edge of the mill, such means or apparatus effecting
a great saving in the quantity of medium used and causing it to become more
evenly spread over the acting face or edge of the mill.
According to my invention I fit a hopper and mixer contiguous to the mill
and feed the medium in solution to the mill at some point intermediate between
the axis and acting face or edge, in such a manner that the fluid medium
is evenly deposited upon the mill the centrifugal action of which, during rotation,
causes the fluid medium to creep and spread evenly towards the periphery and
to pass over the mill face or edge in a thin but even layer, whereby nearly all
or the greater proportion of the medium is used for the purpose for which it was
intended and preventing the usual waste thereof.
I make use of a hopper and mixer similar to that described in my former
Letters Patent No. 3269 of 1898, but instead of employing a rotating disc brush
to convey the fluid medium from the slit or holes in the mixer-end to the mill
face I now make use of a tubular conveyor provided with a spiral brush or
beaters or a worm mounted on a shaft suitably driven.
One end of the tubular conveyor is mounted contiguous to the slit or hole in
the mixer end and is provided with an adjustable opening for regulating the
supply of the fluid medium. The other end is provided with an opening so
arranged that the medium is passed on to a rotating brush which is in contact
with the mill near the axle thereof or at any other point between the acting face
and the axle.
The mill is preferably formed as a circular disc to which a ring of stone,
iron, copper, lead, or other suitable material is secured, as described in my
said former Letters Patent.
The recess formed by the grinding ring is fitted with a metal or other disc
the level of which is adjustable and which fits the internal diameter of the
ring. The medium is fed on to this disc by the rotary brush from whence the
medium spreads and creeps by the centrifugal force of the rotating mill to and
over the acting face in a perfectly even thin layer.
The rotary brush, which is in contact with the mill, may be driven faster
or slower than the mill or it may be driven by the contact with the mill; also
this brush is perfectly enclosed in a case provided with an opening opposite the
mill through which the brush emerges and feeds the medium to the mill.
Dated 22nd August 1899.
WILLIAM OLIVER BAILEY.
By George Downing & Sons,
Chartered Patent Agents.
8, Quality Court, London, W.C.

page_text: An Improved Method of and Means or Apparatus for Feeding,
Abrading and other Medium to Grinding, Cutting and Polishing
Mills.
I, WILLIAM OLIVER BAILEY, of Excelsior Works, Wenlock Road, City Road,
London, E.C., Glass Merchant, Silverer and Beveller, do hereby declare the nature
of my said 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 my invention is to provide a new or improved method of and
means or apparatus for feeding emery, sand, rouge or other grinding or polish-
ing mediums to the face or edge of the mill, such means or apparatus effecting
a great saving in the quantity of medium used and causing it to become more
evenly spread over the acting face or edge of the mill.
According to my invention I fit a hopper and mixer contiguous to the mill
and feed the medium in solution to the mill at some point intermediate between
the axis and acting face or edge, in such a manner that the fluid medium
is evenly deposited upon the mill the centrifugal action of which, during rotation,
causes the fluid medium to creep and spread evenly towards the periphery and
to pass over the mill face or edge in a thin but even layer, whereby nearly all
or the greater proportion of the medium is used for the purpose for which it was
intended and preventing the usual waste thereof.
I make use of a hopper and mixer similar to that described in my former
Letters Patent No. 3269 of 1898, but instead of employing a rotating disc brush
to convey the fluid medium from the slit or holes in the mixer-end to the mill
face I now make use of a tubular conveyer provided with a spiral brush or
beaters or a worm mounted on a shaft suitably driven.
One end of the tubular conveyer is mounted contiguous to the slit or hole in
the mixer end and is provided with an adjustable opening for regulating the
supply of the fluid medium. The other end is provided with an opening so
arranged that the medium is passed on to a rotating brush which is in contact
with the mill near the axle thereof or at any other point between the acting face
and the axle.
The mill is preferably formed as a circular disc to which a ring of stone,
iron, copper, lead, or other suitable material is secured, as described in my
said former Letters Patent.
The recess formed by the grinding ring is fitted with a metal or other disc
the level of which is adjustable and which fits the internal diameter of the
ring. The medium is fed on to this dise by the rotary brush from whence the
medium spreads and creeps by the centrifugal force of the rotating mill to and
over the acting face in a perfectly even thin layer.
:
The rotary brush, which is in contact with the mill, may be driven faster
or slower than the mill or it may be driven by the contact with the mill also
this brush is preferably enclosed in a case provided with an opening opposite the
mill through which the brush emerges and feeds the medium to the mill.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings in which similar
letters of reference indicate corresponding parts.
Fig. 1 is a front elevation of my improved feeding arrangements.
Fig. 2 is a sectional plan.
Fig. 3 is a sectional end view of the mill.
a is the mill, b is the grinding ring, and c is the hopper or mixer (in which

page_text: the medium in solution is agitated). The end of the hopper or mixer.e is formed
with a hole or slot d which is fitted with a suitable valve d¹ to control the exit
of the medium solution. In front of the mixer c and the hole d therein, a
trough or tubular conveyor e is fitted; in the drawings this is shewn as bolted
to the mixer and supported on the mill axle, but any other convenient means of
support may be adopted. The conveyor e is provided with a worm e¹ (or a
spiral brush may be used) attached to a worm shaft e driven from any convenient
source of power; in the drawing it is shown as geared with the mixer shaft
by bevel gearing. The shaft 2 carries on its end a circular brush which is
fixed thereto, the end of the shaft being supported in the socket bearing e in
which the mill shaft a revolves. The tubular conveyor or trough is formed with
a case enclosing the annular brusli e except for a suitable distance opposite
the mill, where the brush projects through an opening in the case on to a metal
or other disc f. This disc (Fig. 3) is arranged to fit the recess formed by the
grinding ring and is adjustably supported therein by bolts and springs for by
any other suitable means whereby the level of the disc may be adjusted to a
position, preferably, slightly below the level of the ring b, as shown in Fig. 3.
It will thus be seen that as the medium is ejected through the hole or slot d
of the mixer it is conveyed to the brush e³ which transfers the medium on to
the disc in a regular manner; the mill and disc revolving causes the medium
to creep or travel spirally (by centrifugal action) towards and over the surface
of the grinding ring. In travelling or creeping the medium becomes more
and more spread and evenly distributed and the layer, which (where it is first
applied to the disc from the brush) began comparatively thick and uneven,
Hows over the grinding face of the ring as a thin fine even film.
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 mills for grinding and polishing the combination therewith of the method
of and means for feeding the abrading or polishing medium in solution thereto,
substantially as set forth.
2. In means for feeding medium to grinding and polishing mills, the com-
bination, with a mixer or hopper, of a hole or slot in said mixer; a valve fitted
to control said opening; a tubular or trough conveyor fitted with a worm or
spiral brush; an annular or circular brush attached to the conveyor shaft; and
a disc fitting the recess formed by the grinding ring, substantially as set forth.
3. The combination with a mixer formed with a controllable opening and
means for conveying the medium to a circular brush, of a disc fitting the recess
formed by the grinding ring, and means such as that described for adjustably
supporting said disc, substantially as set forth.
4. In mills for grinding and polishing the combination, with a grinding ring,
of a disc adjustably supported within said ring, substantially as and for the
purpose set forth.
W. O. BAILEY.
By George Downing & Sons,
Chartered Patent Agents,
S, Quality Court, London, W.C.