Improvements in Grinding or Crushing Mills.
Year: 1892

page_text: Date of Application, 2nd Aug.,
1892
Complete Specification Left, 1st May, 1893—Accepted, 10th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Grinding or Crushing Mills.
I, THOMAS WILLIAM BRITTAIN of London Road, Chesterton, in the County
of Stafford, Merchant, and 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 mills for grinding or crushing various materials, and is
particularly applicable for the production of meals.
According to this invention the interior grinding face of the fixed stone is
inclined, or the stone is made with a truncated conical opening therethrough.
Working in said' opening is a truncated or wedge shaped rotary stone which may
practically be considered as a truncated cone with two side sections removed.
With this construction, if the material to be ground be fed to the mill at the
truncated end of the cones it will gradually work down the incline to the discharge
end. The space between the stones or grinding faces will determine the degree of
fineness of the ground material, and for this purpose the rotary stone may be made
adjustable with regard to the fixed stone. On the angle of the incline on the fixed
stone will largely depend the rapidity of delivery.
Dated this 2nd day of August 1892
PHILIP M. JUSTICE,
Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Grinding or Crushing Mills.
We, THOMAS WILLIAM BRITTAIN of London Road, Chesterton, in the County
of Stafford, Merchant, and 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 mills for grinding or crushing various materials, and is
particularly applicable for the production of meals.
According to this invention the interior grinding face of the fixed stone is
inclined or the stone is made with a truncated conical opening therethrough.
Working in said opening is a truncated or wedge shaped rotary stone which may
practically be considered as a truncated cone with two side sections removed.
With this construction if the material to be ground be fed to the mill at the
truncated end of the cones it will gradually work down the incline to the discharge
end. The space between the stones or grinding faces will determine the degree of
fineness of the ground material, and for this purpose the rotary stone may be made
adjustable with regard to the fixed stone. On the angle of the incline on the fixed
stone will largely depend the rapidity of delivery.
In the accompanying drawings
Fig. 1 is a side elevation partly in section.
Fig. 2 is an end elevation of the larger end of the cylinder showing the rotating
grinders and shaft.
Figs. 3 and 4 are side and end elevations respectively showing the grinding stone
mounted directly on the shaft instead of being secured in boxes or carriers as shown
in Figs. 1 and 2 where the grinding stones or pieces A are represented as being
held in boxes or carriers B secured to shaft C which is driven by pulley D.

page_text: The material to be ground may be fed to the machine through trough E to which
movement may be imparted by means of an eccentric F and rod G, and such
material after being ground between the rotary grinders A and fixed cylinder H
will be discharged by chute I. The rotary grinders shown in Figs. 1 and 2 may
be set in their boxes so as to regulate the fineness to which the material is to be
ground, and as they wear away may be reset until almost the entire block has been
used. In the construction shown in Figs. 3 and 4 this regulation and resetting are
secured by either an inward movement of the shaft carrying the solid grinder or
by moving said grinder on the shaft.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
In crushing or grinding mills the combination of a fixed grinding cylinder having
an internally truncated conical face with rotary grinders adapted to bear across
said face and capable of being set to regulate the fineness to which the material is
to be ground, substantially as set forth.
Dated the 28th day of Anril 1892
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Chartered Patent Agent.