Improvements in Crushing or Grinding Mills.
Year: 1892

page_text: Date of Application, 14th Sept., 1892
Complete Specification Left, 9th June, 1893-Accepted, 15th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Crushing or Grinding Mills.
I, HENRY JAMES RALPH PAMPHILON of 19 Moody Terrace, Congleton,
Cheshire, Gentleman, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to that class of crushing or grinding mills in which one of
the grinding faces is practically a hollow cylinder, against the inner face of which
a series of rotating grinding faces bear.
According to this invention it is proposed to have two series of rotating grinders
revolving upon separate shafts in opposite directions. Each series consists of say
three grinders grooved or let into the revolving carrier in such a manner that as
the said carrier is revolved the grinders are thrown out on their guides by
centrifugal force, and bear against the internal face of the cylinder which may have
a slight inward taper from either side, the rotating grinders being made to accord
therewith.
If the oppositely rotating series of grinders are brought sufficiently close together
a portion of the material will be acted on between them. It will of course be
understood that suitable inlet and discharge openings are made in the outer casing.
When the internal cylinder and the rotating grinders are formed of stone the
mill will be found applicable for the grinding or crushing of cements, paints, potters
materials and other hard substances, which preferably must be free from all metal
particles.
Dated this 14th day of September 1892.
PHILIP M. JUSTICE, Fel. Chart. Inst. P.A.,
55 & 56, Chancery Lane, London, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Crushing or Grinding Mills.
I, HENRY JAMES RALPH PAMPHILON, of 19 Moody Terrace, Congleton,
Cheshire, Gentleman, 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 to that class of crushing or grinding mills in which one of
the grinding faces is practically a hollow cylinder, against the inner face of which
a series of rotating grinding faces bear owing to the action of centrifugal force.
To clearly explain the invention reference is made to the accompanying drawing
in which
Figure 1 represents an end elevation of one form of the apparatus, the end plate
and driving pulley being removed, and
Figure 2 is a sectional elevation on the line zz of Figure 1.
In this form of apparatus it is proposed to have two series of rotating grinders a, a,
revolving upon separate shafts 6, b, in opposite directions. Each series consists of
say three grinders a grooved or let into the revolving carrier c in such a manner
that as the said carrier is revolved the grinders are thrown out on their guides d by
centrifugal force, and bear against the internal face of the cylinder f which may if
desired have a slight inward taper from either side, the rotating grinders being
made to accord therewith. If the oppositely rotating series of grinders a are
brought sufficiently close together a portion of the material will be acted on
between them. The material to be ground may be fed through a trough g to
P1

page_text: which a rising and falling or shaking motion-may be imparted by means of a
rod and eccentric i, the material after grinding being discharged from the machine
by the trough or pipe j.
When the internal cylinder and the rotating grinders are formed of stone the
mill will be found applicable for the grinding or crushing of cements, paints, potters
materials and other hard substances, which, preferably.must. be free from all metal
particles.
Having now particularly described and ascertained the nature.bf.my said inven-
tion and in what, manner the same is to be performed I declare that what 1
claim is :-
1. In crushing or grinding mills the combination of separate reversely driven
shafts each provided with a carrier mounted thereon, grinders loosely carried
thereby and a surrounding cylinder against which the grinders a
are caused. to bear
by the action of centrifugal force, substantially as set forth.
2. The improved crushing or grinding mill substantially as described.
1000
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Chartered Patent Agent for the Applicant.