IMPROVEMENTS IN MACHINERY FOR CRUSHING, PULVERIZING, AND DISINTEGRATING MINERALS, SUCH AS COAL, LEAD, AND COPPER ORES, AND STONES AND OTHER SIMILAR SUBSTANCES.”
Year: 1878

page_text: LETTERS PATENT to Matthew Coulson, of Spennymoor, in the County of
Durham, for the Invention of "IMPROVEMENTS IN MACHINERY FOR CRUSHING,
PULVERIZING, AND DISINTEGRATING MINERALS, SUCH AS COAL, LEAD, AND
COPPER ORES, AND STONES AND OTHER SIMILAR SUBSTANCES.”
18
HORA
FOLL
1878
PROVISIONAL SPECIFICATION left by the said Matthew Coulson at the
SE
Office of the Commissioners of Patents on the 12th October 1878.
MATTHEW COULSON, of Spennymoor, in the County of Durham. IMPROVEMENTS
IN MACHINERY FOR CRUSHING, PULVERIZING, AND DISINTEGRATING MINERALS, SUCH
AS COAL, LEAD, AND COPPER ORES, AND STONES AND OTHER SIMILAR SUBSTANCES."
This Invention has for its object improvements in machinery for crushing,
pulverizing, and disintegrating minerals, such as coal, lead, and copper ores, and
stones and any other similar substances to a given size or to a fine dust, so as to
effect these operations in a far more efficient and economical manner than has
hitherto been practicable.
My improvements consist of a suitable framing furnished with one or more
cylindrical roller or rollers, and having one or more series of concave plates fitted
therein, the peripheries whereof are made either plain, fluted, checkered, or other-
wise, according to the purpose to which they are to be applied. Such roller or
rollers is or are so arranged as to work either vertically or horizontally within or
without the concave plates before mentioned. Such rollers may be made either
stationary or movable as most convenient.
I make the framing, rollers, and concave plates either of wrought or cast iron,
steel, timber, or any other suitable metal or material, and either made or cast whole,
or formed in segments or bars properly bolted, rivetted, or otherwise properly and
securely fastened together.

page_text: In order to render the rollers and concave plates adjustable so as to obtain the
crushed material in particles of any required size the rollers are arranged to work
in movable bearings, and the concave plates are set up fast or rigid with wedges,
and adjusted by means of screws, and either with or without spiral springs or levers
and weights to any required distance. I take care to make the wedges in such a
manner that they are adapted to break and allow the concave plate to give way in
case any foreign matter should get in, and by so doing I avoid all risk of breakage
of machine.
By the use of my improved mechanism the various operations of crushing,
pulverizing, and disintegrating are performed in a far more rapid and economical
manner than has hitherto been practicable.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Matthew Coulson in the Great Seal Patent Office on the 12th April
1879.
MATTHEW COULSON, of Spennymoor, in the County of Durham. "IMPROVEMENTS
IN MACHINERY FOR CRUSHING, PULVERIZING, AND DISINTEGRATING MINERALS, SUCH
AS COAL, LEAD, AND COPPER ORES, AND STONES AND OTHER SIMILAR SUBSTANCES.".
This Invention has for its object improvements in machinery for crushing,
pulverizing, and disintegrating minerals, such as coal, lead, and copper ores, and
stones and any other similar substances either to a given size or to fine dust, as
may be desired, so as to effect these operations in a far more efficient and economical
manner than has hitherto been practicable.
My improvements consist of a suitable framing furnished with one or more
cylindrical corrugated roller or rollers, and having one or more concave plates fitted
therein, the upper surfaces whereof facing the rollers are made either plain, fluted,
serrated, or otherwise figured, or partially plain and partially figured, according to
the purpose to which they are intended to be applied; and, if desired, serrations of
intended patterns may be combined on the upper surfaces of the plates, as indicated
in Figure 2 of the accompanying Drawings. Such roller or rollers is or are so
arranged as to work either vertically or horizontally within the concave plates
before mentioned, and may be made either stationary or movable, as most con-
venient, but preferably movable.
I make the framing, rollers, and concave plates either of wrought or cast iron,
steel, timber, or any suitable combination of such materials, and either made or cast
whole or formed in segments or bars properly bolted and rivetted or otherwise
securely fastened together; and I case-harden the rollers and also the wearing
surfaces of the concave plates.
In order to render the rollers and concave plates adjustable so as to obtain the
crushed material in particles of any required size the rollers are arranged to work
in adjustable movable bearings, as shewn in Figure 2 of the accompanying
Drawings, so as to permit of their being readily adjusted to produce any particular
size of crushed material, while the concave plates are set up fast or rigid with
wedges, and adjusted by means of screws, and either with or without spiral springs
or levers and weights, or their equivalents, to any required distance. I make the
wedges sectional and taper, and adjust them in such a manner that they are adapted
to break and allow the concave plates to fall down in case any foreign substance
calculated to injure the plates be mingled with the ore, and by so doing I avoid all
risk of breakage of the machine, as well as the cost of re-instating the same.
By the use of my improved mechanism the various operations of crushing,
pulverizing, and disintegrating are performed in a far more rapid and economical
manner than has hitherto been practicable.
And in order that my said Invention may be better understood I will now
proceed to particularly describe the accompanying Drawings, Figure 1 whereof
shews a plan view of one of my improved crushing machines, and Figure 2 a view
of the same in vertical section. A is the framing or standards of the machine, in
which are fixed in suitable fixed or movable bearings a one or two case-hardened
fluted or plain rollers B.
In a convenient position underneath these rollers are fixed one or two concave
plates C together with a regulator C₁ and tongue, both of which are fitted on a
spindle C and worked as a hinged joint. The wearing parts of the concave
plates Cs are made in segments which are case-hardened, and are dovetailed or
otherwise fitted in, and the regulator C¹ is adjusted by a short arm or lever placed
outside of the framing A.
The wedges D are made sectional and tapered, and are so adjusted with suitable
screws D' as to set up the concave plates rigid and at any desired distance apart

page_text: that may be required, at the same time that they are so arranged as to break and
give way in case of any undue strain being put upon them owing to any foreign
matter getting in between, and by this means I obviate all risk of breakage of the
machine, as before mentioned. The rollers B are connected together and driven
with any suitable spur gearing.
The operation of my improved crushing machine is, as follows:-The coals or
other minerals are filled or run in through a hopper or spout to the top of the
rollers, and are then in passing through crushed by such rollers to a small size so as
to enable them to be forced by the action of the rollers in between the rollers and
the concave plates, and there crushed and pulverized to any degree of fineness
required.
Having thus particularly described and ascertained the nature of my said Inven-
tion of "Improvements in Machinery for Crushing, Pulverizing, and Disintegrating
Minerals, such as Coal, Lead, and Copper Ores, and Stones and other similar
Substances," and the manner of carrying the same into effect, I would have it
understood that I claim,-
Firstly. The improved construction of machine for crushing, pulverizing, and
disintegrating minerals, substantially as herein-before described and illustrated.
Secondly. The improved combination and arrangement of the various parts of
such machines, substantially as herein-before described and set forth.
In witness whereof, I, the said Matthew Coulson, have hereunto set my hand
and seal, this Seventh day of April, in the year of our Lord One thousand
eight hundred and seventy-nine.
MATTHEW COULSON. (L.S.)