Improvements in Machinery or Apparatus for Drying Wool and other Fibrous Material.
Year: 1890

page_text: Date of Application, 28th Nov., 1890
Complete Specification Left, 28th Sept., 1891-Accepted, 21st Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Drying Wool and
other Fibrous Material.
I, WILLIAM TATTERSALL, of 8, Southfield Square, 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 machinery or apparatus for drying
fibrous material such as wool, hair, cotton, rags and the like.
An
For this purpose I employ a stationary drying chamber of cylindrical form and
perforated below or a drying chamber having a semi-cylindrical lower side
perforated. And I arrange a skeleton or perforated cylinder closely fitting the
cylindrical chamber or cylindrical portion of said chamber to revolve therein.
air propellor is employed to exhaust the air from the interior of the chamber and
create a current through the perforated portion and the material to be treated is
placed upon said perforated portion so that a constant current of air heated or
otherwise may be passed through the material whilst the revolving cylindrical
skeleton is constantly turning it over to uniformly expose the whole of the material
to the action of the air current.
The said perforated portion of the chamber may consist of a series of tubes
arranged to be heated by water or steam.
To traverse or pass the material through the chamber the apparatus may be
inclined or a worm, screw or helical conveyor may be employed and projecting pegs
or other devices fixed to the internal cylinder or worm to alternately lift and drop
the wool or other material as it is passed along. Within said worm I may arrange
a number of inclined plates or louvers the inclination of which may be adjustable
and upon which the wool or other material is dropped after being lifted by the
screw and its progress as it slips between them thus advanced or retarded according
to the extent and direction of the inclination of said louvers.
Any suitable elevating arrangement may be employed in connection with the
inclined plates or louvers arranged in the manner described instead of a worm.
Dated this 26th day of November 1890.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE. SPECIFICATION.
Improvements in Machinery or Apparatus for Drying Wool and
other Fibrous Material.
I, WILLIAM TATTERSALL, of 90, Arden Terrace, Accrington in the County of
Lancaster, Engineer, late of Southfield Square, Bradford, Yorkshire, 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 improvements in machinery for drying fibrous material
such as wool, hair, cotton, rags and the like.
The said improvements consist in the general construction and arrangement of
apparatus herein described whereby the material treated is gently traversed without
relatively disturbing the component fibres and is at the same time uniformly exposed
to a current of air drawn through it.
To fully describe my invention reference is made to the accompanying sheet of

page_text: UTULISI WHICH
Summa ACOUCES OF LOICT CHIC
indicate corresponding parts in each of the figures.
Figure 1, is a longitudinal section of my improved apparatus.
Figure 2, is a side view of the same.
Figure 3, is a view of the delivery end of the apparatus,
Figure 4, is a view of the feed end, and
Figure 5, is a transverse section on line a, b Figure 2.
Figure 6, is a similar view to Figure 1 illustrating a modified arrangement for
traversing the material, and
Figure 7, illustrates a further modification.
The drying chamber A has an inclined perforated bottom B of circular section
beneath which a system of tubes C are arranged adapted to be heated by steam or
other means.
A space C¹ may be left at the end of the tubes C as shown in
Figure 1 so as to leave room for a man-hole in the bottom of the chamber A to
facilitate cleaning it out. The drying chamber is preferably formed of sheet metal
mounted upon a metal framework suitably braced together and the sides D are
continued below the perforated bottom of the chamber so as to enclose the tubes C
but an opening E is left below each side for the admission of air. A dome F is
formed at the top of the chamber in which an opening G is made and fitted with a
fan or other device adapted to draw air therefrom so as to create a current from
the underside of the perforated bottom B through the chamber.
A skeleton frame H is mounted in the chamber A approximately concentric with
the perforated bottom B and is arranged to revolve on its annular end journals a
fitting circular openings in the end standards J and resting upon the anti-friction
wheels mounted upon studs c fixed in the standards. Said frame carries a
number of pins hooks or claws i which almost touch the perforated bottom as the
frame revolves. The annular openings in the end of the chamber are closed by
plates d fixed to the standards J by bolts d and said plates carry endless feed and
delivery aprons K, and L operated in any convenient way in the direction of the
arrows. Feed and delivery openings e and f are made in the plates d immediately
over said aprons and light rollers j mounted in slots g formed in brackets / fixed
to such plates rest upon the material passing by said apron and in a great measure.
exclude air.
The frame H is slowly rotated by the worms a¹ on the cross shafts 6¹ engaging
the worm wheels c' secured to the anti-friction rollers 6 and the cross shafts are
geared together by the bevel wheels e¹ and the longitudinal shaft g¹. The driving
pulley is shown mounted upon the front cross shaft.'. The aprons K and L
may be driven from the cross shafts by a belt similar to 62 Figure 4.
When the apparatus is in operation a continuous current of air, heated if
necessary by the pipes C is drawn through the chamber A by the fan or its
equivalent at G and whilst the frame H is revolving the material to be treated is
fed in to the chamber by the apron K. The material falls upon the perforated
bottom Band being caught by the hooks or pins i is carried more or less to the top
of the chamber and then falling off drops vertically a little further forward. In
this manner the material is carried to the other end of the chamber,and eventually
dropping on to the delivery apron L passes out. The speed of the traverse is
governed by the speed at which the frame H is rotated and the inclination of its
axis.
Instead of inclining the axis of the frame H a number of inclined plates or
louvers M (Figure 6) may be mounted in the chamber independent of the frame
and pivoted to the longitudinal side bars m secured to the end plates d. 'The
inclination of the plates M is regulated by the top rod N linked to such plates and
adjusted by the screw a fitting the nut n' pivoted to the connecting piece n².
In this modified arrangement the material treated is raised by the pins or
hooks i, drops on to the tops of the plates M, slides down them, and is thus carried
forward.
In Figure 7, the skeleton worm 'A' is employed instead of the louvers (M. This

page_text: worm is secured at each end to the annular journals a connected together by the
longitudinal frame H by which the worm is also supported. In this arrangement
the pins i alternately lift and drop the material as before and it is traversed along
by the worm each time it reaches the perforated bottom of the drying chamber
before the pins i again raise it.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare what I
claim is :-
1. Drying apparatus for wool, cotton and the like, consisting of a drying chamber
having a perforated bottom of circular section through which a current of air is
continuously drawn, and a revolving frame mounted approximately concentric with
said circular bottom, substantially as herein shown and described.
2. Drying apparatus for wool, cotton and the like, consisting of a drying chamber
having an inclined perforated bottom of circular section, and an inclined revolving
frame mounted concentric therewith, substantially as herein shown and described.
3. Drying apparatus for wool, cotton and the like, consisting of a drying chamber
having a perforated bottom of circular section, a revolving frame concentric there-
with and a number of inclined plates or louvers, substantially as herein shown and
described and for the purpose specified.
4. Drying apparatus for wool, cotton and the like, consisting of a drying chamber
having a perforated bottom of circular section, and a revolving frame mounted
therein carrying a skeleton worm, substantially as herein shown and described and
for the purpose specified.
Dated this 26th day of Santember 1801
DRACUP & NOWELL,
Bradford, Agents.