Year: 1897

page_text: I, ERNEST ROWLANDS, of 36, Brook Street, Bradford, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in that class of drying machines in
which the material is dried whilst passing through an inclined rotary drying
cylinder or chamber which cylinder or chamber is heated externally and the
heated air is drawn through it.
To carry out my improvements I fix a cast iron or other collar or sleeve on each
end of the drying cylinder. These collars rest upon anti-friction rollers upon
which the cylinder rotates and to keep the heat from them as much as possible
rings fitting the collars are built into the walls of the heating chamber. At the
lower end two of such rings are employed one on each side of the 'anti-friction
rollers and at the upper end one of such rings fitting the upper collar is located
below the anti-friction rollers and the upper end of the collar fits the circular
opening into the fan chamber, and for this purpose is preferably reduced. The
driving wheel is mounted close to this reduced part and below the anti-friction
rollers a projecting shoulder is formed to bear against the ring fixed in the walls
of the heating chamber and confine the cylinder longitudinally. The lower collar
is made cylindrical or of such a form that it can move laterally in the lower rings
to allow of expansion and contraction of the cylinder.
In order to admit a portion of the heated gases directly into the interior of the
drying cylinder to act upon the material to be dried at the initial stage I form an
annular or circumferential opening in the cylinder a suitable distance from the
top. This annular opening is formed by making the portion of the cylinder
immediately above it of sufficiently less diameter than the portion immediately
below, and fixing the upper portion a suitable distance into the lower portion by
means of radial rivets having spacing-collars to keep the upper portion and lower
portion concentric. Two or more of such openings may be used.
Dated this 21st day of September 1897.
improvements in Drying Machines.
I, ERNEST ROWLANDS, of 36, Brook Street, Bradford, in the County of York,
Engineer, do hereby declare the nature of this invention and in what manner the
[Price 8d.]

page_text: same is to be performed, to be particularly described and ascertained in and by
the following statement:-
-
This invention relates to improvements in that class of drying machines in
which the material is dried whilst passing through an inclined rotary drying
cylinder or chamber which cylinder or chamber is heated externally and the
heated air is drawn through it.
To fully describe my invention reference is made to the accompanying sheet
of drawings, forming a part of this specification, in which similar letters of refer-
ence indicate corresponding parts in each of the figures.
Figure 1, is a sectional elevation of a drying machine with my improvements
applied.
Figure 2, is a plan view of the same.
Figure 3, is a view of the feed end of the rotary part.
Figures 4, 5 and 6 are views of detail hereinafter referred to.
The heated gases from the furnace A pass into the flue B and are drawn in the
usual way by the fan, hereinafter referred to, in the direction of the arrows under
the bridge of brickwork D into the brickwork chamber E and through the
inclined rotary drying cylinder F. The sides B2 of the flue B and the sides and
the end E of the chamber E may be formed of brickwork. The top of the flue
and the top of the chamber E may be covered with metal plates G. Any suitable
means are provided for discharging the material passing out of the delivery end
of the cylinder.
To carry out my improvements I fix a cast iron or other collar H on the front
end of the cylinder F and a collar J on the delivery end of the cylinder. The
parts Hand J of the collars rest upon anti-friction rollers K upon which the
cylinder rotates and which are mounted in pedestals K2 fixed to the foundation
plates K and K respectively fixed on the end B3 of the flue and the bridge D.
To keep the heat from the anti-friction rollers at the front end a plate L is built
into the walls of the flue this plate is secured at the bottom to the foundation
plate and has side flanges L2 against which the brickwork abuts. A hole L
is made through the plate to loosely fit the part H³ of the collar H and the
shoulder H bears against the front face of the plate L. Figure 4, is a sectional
plan on a larger scale of the collar H and plate L.
At the other end two of such plates L and L are employed resting upon the
foundation plate K. These plates each have side flanges L² and the plate Lt is
built into the walls of the flue B and the plate L into the walls of the chamber E.
Openings L³ fitting the collar J are made through the plates L and L. Figure 5,
is a sectional plan on a larger scale of the collar J and the plates L and L. The
reduced part H6 of the collar H projects into the opening N of the fan chamber N
and the fan is fixed in the side opening N³ of such chamber.
A shoot O is pro-
vided to feed the material into the cylinder. The cylinder is rotated by the
wheel P on the collar H driven by the pinion P² actuated in any convenient manner.
Stay rods P³ are preferably provided to connect the corners of the plates L, L'
and L together.
In order to admit a portion of the heated gases directly into the interior of the
drying cylinder to act upon the material to be dried at the initial stage I form an
annular or circumferential opening F in the cylinder a suitable distance from
the top. This annular opening is formed by making the portion of the cylinder
immediately above it of sufficiently less diameter than the portion immediately
below, and fixing the upper portion a suitable distance into the lower portion by
means of radial rivets F3 having spacing collars F to keep the upper portion and
lower portion concentric. Two or more of such openings may be used. Figure 6,
⚫ is a section of the cylinder on the broken line a, b Figure 1.

page_text: 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:-
-
The combination with the drying cylinder having end collars H and J of the
plates L, LA and L and the anti-friction rollers K, substantially as herein shown
and described and illustrated in the accompanying drawings.
Dated this 20th day of July 1898
DRACUP & NOWELL,
Patent Agents, Bradford.