IMPROVEMENTS IN THE CONSTRUCTION OF PULVERIZING MA- CHINES, AND IN THE ADAPTATION OF THE SAME FOR SUPPLYING POWDERED OR PULVERIZED FUEL TO FURNACES
Year: 1877

page_text: LETTERS PATENT to Jacob Jones Storer, of the City and State of New York,
United States of America, now of 8, Southampton Buildings, London, for the
'Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF PULVERIZING MA-
CHINES, AND IN THE ADAPTATION OF THE SAME FOR SUPPLYING POWDERED OR
PULVERIZED FUEL TO FURNACES"
Sealed the 21st August 1877, and dated the 9th June 1877.
PROVISIONAL SPECIFICATION left by the said Jacob Joncs Storer at the
Office of the Commissioners of Patents on the 9th June 1877.
JACOB JONES STOREB, of the City and State of New York, United States
of America, now of 8, Southampton Buildings, London. "IMPROVEMENTS IN THE
CONSTRUCTION OF PULVERIZING MACHINES, AND IN THE ADAPTATION OF THE SAME
FOR SUPPLYING POWDERED OR PULVERIZED FUEL TO FURNACES."
This Invention relates partly to the construction of pulverizing machines, that is
to say, the said machines, according to my Invention, have a cylinder, preferably of
cast iron, with smooth internal periphery, within which is a shaft to which are
fastened discs carrying arms with "paddles" or faus on their ends.
The cylinder is furnished with one or more diaphragmns having circular central
openings around the said shaft; these diaphragms divido the cylinder into two
or more sections or chambers, in each of which a set of the aforesaid arms
revolves.
The central openings in the diaphragm may be reduced to any required area
by fitting in the central opening metal plates surrounding the shaft.
The material to be powdered is fed into an opening in one end of the cylinder at
or near its axis, and ejected or delivered from a peripheral opening near the
opposite end.

page_text: For the sake of durability the said cylinder is preferably lined with plate iron or
steel. At or connected with the opening in the receiving end of the cylinder is a
feed box which serves to receive the material to be powdered, and to guide it into
the machine. Slides or dampers fitted on this feed box serve to regulate the amount
of air that passes through the machine.
A hopper is attached to the machine with a mouth or lip projecting over and
opening into the top of the said feed box. In this hopper is a taper auger, or
an auger with graduated thread arranged to be drawn in and out at will, and
made to revolve, and deliver, and regulate the delivery of material to the mill;
or this hopper may be arranged in any convenient position with regard to the
machine.
The said Invention also consists in pulverizing the fuel or reducing it to an
exceedingly fine powder by the said machine, and delivering this fuel into a
furnace or firo-place by the same.
•
The powdered fuel may be delivered into the furnace or fire-chamber in one jet
through a single pipe from the machine, or in two or more jets by dividing the
said pipe into branches.
•
The tuyere through which the fuel is injected into the furnace is preferably
flattened at one end, that is to say, it is made fan-shaped. In some instances I
provide another tuyere through which heated air is forced. A "water back or
adjustable and cooling support for the tuyere is also used.
"
Heated air, when used in conjunction with the powdered fuel, is supplied from
hot-blast pipes placed in the base of the smoke stack, or in a chamber especially
designed to enclose them, the air being heated by the heat escaping from the
'furnace or fire-chamber.