Improvements in Pneumatic Malting Cylinders.
Year: 1895

page_text: Date of Application, 27.h May, 1895
Complete Specification Left, 27th Feb., 1896-Accepted, 28th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Malting Cylinders.
I. WILLIAM ADLAM, of 1, Ellbroad Street, Bristol, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention has reference to multitubular cylinders or drums employed in
pneumatic malting.
According to this invention the perforated tubes of such malting cylinders are
furnished with covers hinged either to the tubes, or to the tube-plate which
constitutes the inner wall of the chamber into which the air for aëration of the
grain is conducted. At the opposite end the tubes communicate with the atmo-
sphere. By the provision of covers to the tubes, any of the latter may be closed
at will. The tubes thus closed at one end act as exhaust tubes, and the air from
the supply tubes passes through the grain to the exhaust tubes.
lence, supply and distribution of the air for aëration of the grain are more
completely under control, and the direction of the air in its passage through the
malting cylinder is governed and varied as the condition of the grain and other
well understood circumstances affecting the process of malting may require.
Instead of being hinged, the covers may be otherwise applied.
Dated this 24th day of May 1895.
NICHOLAS WATTS,
Chartered Patent Agent, Bristol.
Improvements in Pneumatic mating by
1, WILLIAM ADLAM, of 1, Ellbroad Street, Bristol, 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:-
This invention relates to rotatory multitubular cylinders or malting cases
employed in the process of pneumatic malting.
This invention has for its objects to provide better control over supply and
distribution, in the cylinder, of the air by which the grain is aërated, and to more
completely govern and vary, as the condition of the grain and other well understood
circumstances may require, the direction of the air in its passage through the
cylinder and the grain contained therein. A more uniform temperature throughout
the bulk of grain is enabled to be maintained.
According to this invention, the perforated tubes of pneumatic malting cylinders
are fitted with covers capable of closing, at will, the tube ends so that the air
entering tubes open at the supply end and closed at the opposite end, is, after
having passed through the grain contained in the cylinder, discharged through
other tubes open at the exhaust end to the atmosphere and closed at the
opposite end.
The covers may be hinged either to the tubes or to tube plates, or they may be
otherwise applied.

page_text: In the accompanying drawings, Fig. 1 represents in section a multitubular
rotatory malting case a having an air supply chamber a¹ to which air is supplied
through the inlet a', cither under pressure or by suction.
The perforated tubes extending longitudinally in the case a are arranged at the
ends to receive covers b. At Figs. 2 and 3 is shown a tube end and cover drawn
to an enlarged scale. To the tube c is rivetted a frame c¹ into which are screwed
studs having nuts c³ screwed thereon. The cover b engages, when closed, with
one of the studs by a hook b¹.
The other stud acts as a hinge pin on which the cover is turned when the nuts c³
are sufficiently loosened. Fig. 4 is a section on the line a, a, Fig. 1, that is to
say, through the air supply chamber a¹. Fig. 5 is a view at the exhaust end.
Certain of the tubes are shown closed at the supply end and open at the oxhaust
end. Certain others are uncovered at the air inlet end and closed at the opposite
end. In order not to confuse and complicate the drawings appended hereto, the
covers of the uncovered tube ends are not shown. In practice they would not be
removed, but would be turned back on their pivots to leave the tube ends to which
they appertain clear.
The dotted line y, y, seen at Figs. 4 and 5 indicates the surface of a charge of
grain. After the grain has been deposited in the case a, through one of the doors d
which is uppermost at the time of charging, all the tubes above the line y, y, are
covered at the air inlet end and uncovered at the opposite end.
All those
below the line y, y, except the central tube which is preferably always covered
at that end, are uncovered at the inlet end and covered at the opposite end.
The air, which passes into the tubes uncovered at the inlet end, cannot escape at
the opposite end of the said tubes and, accordingly, it passes into the grain and
escapes thence through the tubes which are open at the exhaust end and closed at
the inlet end.
As the case a rotates, the exhaust tubes pass within the line of the surface of the
grain, and the supply tubes pass without the surface line, which alters as the grain
shifts, but still the air can only escape from the supply tubes through the malt to
the exhaust tubes.
In the outer wall a³ of the malting case a are apertures opposite the tube ends.
These apertures, which are fitted with covers f, are provided to enable access to be
obtained to the tubes for cleaning or other purposes.
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 I
claim is :-
In rotatory malting cylinders having perforated tubes, the provision of covers or
caps such as b, or their equivalents, being plates or discs hinged or otherwise hung
or attached so as to be readily moved to cover or uncover, at will, either ends of
any of the tubes by which the air is distributed among the malt and by which the
air escapes, substantially as hereinabove described with reference to the accom-
panying sheet of drawings.
Dated this 24th day of February 1904
NICHOLAS WATTS,
Chartered Patent Agent, Bristol.