IMPROVEMENTS IN MACHINES FOR PULVERIZING ORES, SEEDS, GRAINS AND OTHER SUBSTANCES
Year: 1885

page_text: I, HERBERT JOHN ALLISON, of the firm, of Allison Brothers, Patent Agents, of
52 Chancery Lane, London, in the County of Middlesex, do hereby declare the
nature of my invention for "IMPROVEMENTS IN MACHINES FOR PULVERIZING ORES,
SEEDS, GRAINS AND OTHER SUBSTANCES,"-which invention has been communicated
to me from abroad by Gideon Frisbee of Elmore, Ohio, United States of America,
Civil Engineer, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the accompanying drawings in which :-
Figure 1 is a sectional side view of a pulverizing machine constructed according
to my invention.
Figure 2 is a horizontal or transverse section of my machine.
Figure 3 represents the improved driver used in my machine.
"
Figure 4 represents a sectional view of the cylinder of my machine showing the
means I employ for retarding the inotion of the material and directing it into the
path of the rollers.
Figure 5 represents one of the tapering lugs used in the chamber as hereinafter
explained.
Figure 6 shows the means heretofore used to carry the rollers in a pulverizing
machine with a slot and spindle.
The object or my invention is twofold. First to provide a new and novel means
for driving the rollers in pulverizing machines, and second to furnish a method of
retarding the motion of the ore in the machine and directing it into the path of
the rollers.
In the drawings Figure 1 shows the cast iron or métal disks A used in con-
structing my machine, on the inside of which there is an annular groove C, C. In
the groove the feather Doh the driver D is attached to the driving arms B, B,
(as shown in Figure 1.) and is held securely in position by the groove and feather.
The disks A, are mounted on, and revolve with the shaft and between these disks
and attached to the shaft SI have constructed and arranged the metal arins B. B.
These arms serve, to support and retain in position the rollers A, A. The rollers
are inserted between the drivers D, D, and the arms B, B, the machine being then
put in motion, the disks, and arms revolve to the left and the rollers are propelled
by the drivers D, D.
1:
The important feature of this part of my invention consists in providing
suitable drivers for the pulverizing rollers, and thus dispensing with the spindles

page_text: or shafts F, F, (as shown in Figure 6) and formerly used to carry the rollers in
machines of this class. In all the machines of this class for pulverizing ores and
other substances now known or in use, the rollers are carried around by spindles or
shafts which pass through the rollers and operate in slotted bearings S, S, cut in
the arms U, U, mounted on the main or driving shaft of the machine. The strain
and wear on the bearings, in which the spindles operate, has been found so great
that new bearings or arms containing bearings had to be replaced every twelve or
twenty four hours.
The next feature of my invention consists of a new and novel method providing
for retarding the motion of the ore or other substance in the machine, and
directing or conveying it into the path of the rollers while the machine is in
operation. In constructing and arranging this part of my invention in a
pulverizing machine, I have made a series of. tapering lugs E, E, E, which are
bolted to or fastened inside the periphery of the chamber.
These lugs are made heavy or block shaped at the verge of the pathway in
which the rollers operate, and taper towards the back of the chamber. This form
of construction I regard as the best adapted to resist the force which the ore and
other substances exert upon them when the machine is in operation.
These lugs are arranged diagonally to the path of the rollers (as shown in
Figures 1 and 4) so that when the machine is put in motion as indicated by the
the ore or other substance descending through the hopper T, will be caught
in these series of lugs and directed into the path of the rollera.
arrow,
In operating a pulverizing machine, when the ore or other substance is forced
into the chamber H, adjoining the path of the rollers, and it is put in motion
around the periphery of the disks or chambers, it makes a great many revolutions
before coming in contact with the rollers, and there is in this way a great waste
of force, power and time.
To overcome this obstacle and to direct and concentrate the ore and other
substances in the path of the rollers, I have constructed and arranged this series
of lugs diagonally in the chamber as indicated, whereby the motion of the ore is
partially retarded and directed into the channel or path of the rollers. On the
driving shaft and inside the chamber, I have mounted and arranged a double blade
propellor constructed and arranged so that it will distribute the material to be
pulverized around the periphery of the machine and in the path of the rollers.
The fans or propellors heretofore used in such machines merely tended to force
the material out of the chamber and into the machine.
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,―
First. In a machine for pulverizing ores and other material a chamber provided
with a series of wedge shaped lugs or ribs arranged diagonally on the inside of the
chamber in combination with the rollers, the wedge ribs being for the purpose of
retarding the material and directing it into the path of the rollers substantially as
and for the purpose set forth.
Second. In a machine for crushing ores and other substances, the combination of
the drum, the disks F, F, having grooves C, C, the drivers D, D, provided with
feathers B, B, the arms B, B, shaft A and rollers A, A, substantially as and for the
purpose set forth,