Improvements in Machinery or Apparatus for Crushing, Mixing, Grinding, and Delivering Materials for the Manufacture of Cement.
Year: 1890

page_text: Date of Application, 14th July, 1890
Complete Specification Left, 14th Apr., 1891-Accepted, 6th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Crushing, Mixing,
Grinding, and Delivering Materials for the Manufacture of
Cement.
We NINIAN WOODS CURTIS of 15 Romberg Road, Upper Tooting in the
County of Surrey, Engineer, and ALFRED EDWARD CAREY of 9 Dean's Yard,
Westminster in the County of Middlesex, Civil Engineer, do hereby declare the
nature of this invention to be as follows:-
The object is to provide apparatus combined so as to work conjointly in crushing
chalk and clay or like materials used in the manufacture of cement, to thoroughly
mix the said materials with water, to grind the mixture to the required fineness to
form slurry and to deliver the said slurry at the necessary speed to the drying
floor or equivalent appliance.
Apparatus under our invention consists essentially in the combination of a an
edge runner crushing mill located within a tank or well in which the crushed
materials are thoroughly mixed together with water by means of moving arms or
paddles, a grinding mill of any suitable form situated below the level of the mixed
materials in the tank or well, and c a pump or pumps for withdrawing the ground
mixture or slurry from the grinding mill and delivering it to a drying bed or
equivalent device.
The edge runner mill has a detachable grating on the top of the outer edge of
the pan and removable roller paths.
The mixing appliances consist preferably of arms or paddles attached to the
horizontal shaft carring the edge runners.
The parts are so combined and driven at such speeds that the pump or pumps
remove the slurry at a speed which ensures thorough preparation and incorporation
of the materials, the slurry being drawn through the grinding mill instead of being
delivered by the centrifugal action of mill stones as usually adopted.
suction of the pump applied in this manner ensures a greater output.
Dated this 12th day of July 1890.
The
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Crushing, Mixing,
Grinding, and Delivering Materials for the Manufacture of
Cement.
We NINIAN WOODS CURTIS of 15 Romberg Road, Upper Tooting in the
County of Surrey, Engineer, and ALFRED EDWARD CAREY of 2 Dean's Yard,
Westminster in the County of Middlesex, Civil 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 :―
The object is to provide apparatus combined so as to work conjointly in crushing
chalk and clay or like materials used in the manufacture of cement, to thoroughly
mix the said materials with water, to grind the mixture to the required fineness to
form slurry and to deliver the said slurry at the necessary speed to the drying
floor or equivalent appliance.
Apparatus under our invention consists essentially in the combination of,-a, an
edge runner crushing mill located within a tank or well in which the crushed

page_text: materials are thoroughly mixed together with water by means of moving arms or
paddles; b, a grinding mill of any suitable form situated. below the level of the
mixed materials in the tank or well and c, a pump or pumps for withdrawing the
ground mixture or slurry from the grinding mill and delivering it to a drying bed
or equivalent device.
The edge runner mill has a detachable grating on the top of the outer edge of the
fan and removable roller paths.
The mixing appliances consist preferably of arms or paddles attached to the
horizontal shaft carrying the edge runners.
The parts are so combined and driven at such speeds that the pump or pumps
remove the slurry at a speed which ensures thorough preparation and incorporation
of the materials, the slurry being drawn through the grinding mill instead of being
delivered by the centrifugal action of mill stones as usually adopted. The suction
of the pump applied in this manner insures a greater output.
C,
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is an elevation parts being in section of apparatus constructed in accordance
with our invention. a, is an edge runner crushing mill located within the tank b;
is a grating on the outer edge of the pan d. The cement materials are crushed in
the pan, mixed with water so as to form slurry which flows through the grating
into the tank b. The ground materials are thoroughly mixed with water in the
tank b, by moving arms or paddles e, attached to the edge runner shaft f. g, is a
grinding mill of usual form situated below the level of the slurry in the tank b,
and h, is a pump for drawing the ground slurry from the mill g, and delivering it to
a drying bed or equivalent device, i, are renewable roller paths within the pan d.
Sieves or screens may with advantage be fixed between the edge runner mill and the
grinding mill.. The various parts may be of any usual or suitable construction.
Figs. 2 and 3 are vertical sections of modifications of grinding mills 9 for use
under our invention, here the grinding runners j, are suspended from overhead
bearings k, instead of being supported beneath, as is the usual practice. Lubrication
is thereby made more efficient. In Fig. 2 the runner j, is below the bed plate ?; in
Fig. 3 above. In both cases the grinding surfaces m, are detachable and may be of
steel, chilled iron, emery, burrstone, or other suitable material. Many forms of
grinding mills may be used but we find the three forms shown answer well.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what we
claim is :-
First. The combination of an edge runner grinding mill and pump within a tank,
substantially in the manner and for the purpose set forth.
Second. The combination of a grinding mill and pump substantially in the manner
and for the purpose set forth.
Third. Constructing edge runner pans with detachable gratings for the purpose
set forth.
t
Dated the 13th day of April 1891..
Per pro J. T. KING,
J. Johnson,
Agent.