Improvements in or connected with Machinery or Apparatus for Drying Tea Leaf or the like.
Year: 1896

page_text: Date of Application, 31st Jan., 1896
Complete Specification Left, 21st Feb., 1896-Accepted, 28th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in or connected with Machinery or Apparatus for
Drying Tea Leaf or the like.
I, WILLIAM JACKSON of Thorn Grove, Mannofield, Aberdeen, North Britain,
Engineer do hereby declare the nature of this invention to be as follows:-
My invention has for its object to provide means whereby tea leaf, or the like,
when dried, can be readily discharged from apparatus of the class wherein air is
drawn into, and through, the drying chamber. According to my invention I provide,
at the lower part of the drying chamber, a rotatable hollow cylinder, or receiver,
capable of being rotated, or partially rotated, so that a slot, or opening, in it either
corresponds with, or does not correspond with, a slot or opening, in the bottom of
the drying chamber, the lower part of which has preferably sloping sides leading
down to the said slot or opening.
The said cylinder, or receiver is mounted in a suitable casing, and can have.
motion of rotation or partial rotation, imparted to it by a chain passing over a
pulley on its axis, or by a quadrantal rack operated by a lever, and engaging with
a pinion on the said axis or by any other suitable means.
When the slot, or opening, in the cylinder is turned upwards, the leaves, or the
like, fall into the cylinder or receiver and can be readily discharged by operating
the chain, lever, or the like, so that the slot, or opening in the cylinder or receiver
is turned downwards, the unslotted part of the cylinder or receiver meantime
closing the slot, or opening, at the bottom of the drying chamber. When the leaf
or the like is discharged and the chain or lever is released the cylinder or receiver
returns, or can be returned, to its position for receiving a fresh charge from the
drying chamber.
Dated this 31st day of January 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.
Improvements in or connected with Machinery or Apparatus for
Drying Tea Leaf or the like.
I, WILLIAM JACKSON, of Thorn Grove, Mannofield, Aberdeen, North Britain,
Engineer, do hereby declare the nature of my invention, and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement:-
My invention has for its object to provide means whereby tea leaf, or the like,
when dried, can be readily discharged from drying apparatus, of the class, wherein
air is drawn into, and through, the drying chamber, without the continuance of the
current of air preventing the proper exit of the charge.
According to my invention I provide, at the lower part of the drying chamber,
a hollow cylinder, or receiver, capable of being rotated, or partially rotated, so that
a slot, or opening, in it either corresponds with, or does not correspond with, a
slot, or opening, in the bottom of the drying chamber, the lower part of which has,
preferably, sloping sides leading down to the said slot, or opening.

page_text: Figures 1 and 2 of the accompanying drawings represent, in elevations at right
angles to each other, so much of a drying chamber as is necessary to illustrate the
application of my invention thereto. A is the drying chamber, which, at its upper
part, may be provided with any suitable means for supporting the charge to be
dried such as perforated louvres a, opened and closed by means of the cranked
discs a. The drying chamber has a long slot a³, at bottom. B is a cylinder, or
receiver, having a slot in it at b, (see Figure 6) as long as the slot a and corre-
sponding to the said slot in width, the said cylinder, or receiver, being mounted so that
it can be rotated, or partly rotated, in a casing C, connected to the drying chamber
and having an opening at its lower part. Figure 3 shews in clevation the bottom
of the drying chamber and the cylinder, or receiver, and its casing in end view.
Figure 4 is a part section and part elevation at right angles to Figure 3, and
Figure 5 shews a modification of the means of imparting movement to the cylinder,
or receiver, which is shewn separately in end view, in Figure 6. The cylinder, or
receiver, B, is mounted on trunnions which turn in bearings D carried by
extensions from the drying chamber. In the arrangement Figures 1 to 4 the
cylinder, or receiver, has motion of rotation, or partial rotation, imparted to it by
a chain E, passing over, and secured to a (preferably eccentrically mounted)
pulley on one of the trunnions and in the alternative arrangement Figure 5 this
movement is given to it by means of a quadrantal rack g operated by a lever h, and
engaging with a pinion g2, on one of the said trunnions; or any other suitable means
may be employed for the purpose.
Ileated air is admitted at the part between i and j (Figure 2), and is exhausted
at the part k.
L is a door which can be opened for inspection, or clearing. When the slot, or
opening, b, in the cylinder, or receiver, B, is turned upwards, the dried leaves, or
the like, fall into the said cylinder, or receiver, and can be readily discharged by
operating the chain E, lever h, or the like, so that the slot, or opening, in the
cylinder, or receiver, B, is turned downwards, the unslotted part of the cylinder,
or receiver, meantime closing the slot, or opening, a³, at the bottom of the drying
chamber A and preventing a current of external cold air passing thereby into the
said drying chainber which current would also interfere with the proper discharge
of the dried leaf, or the like. When the leaf, or the like, is discharged and the
chain, or lever, is released the cylinder, or receiver, B, returns, or can be returned,
to its position for receiving a fresh charge from the drying chamber.
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 :-
1. In apparatus for drying tea leaf, or the like, a hollow cylinder, or receiver,
with a slot coinciding with a slot in the bottom of the drying chamber, and so
mounted that the said cylinder, or receiver, is capable of being rotated or partially
rotated; substantially as, and for the purposes, herein before described.
2. In apparatus for drying tea leaf, or the like, a hollow cylinder, or receiver,
with a slot in it coinciding with a slot at the bottom of the drying chamber, and
provided with means for rotating, or partially rotating, it, the lower part of the
said drying chamber being formed with inclined walls, or sloping sides; substantially
as, and for the purposes, herein before described.
3. The arrangement and combination of parts constituting the discharging device
for apparatus for drying tea leaf, or the like, substantially as hereinbefore described,
and illustrated in the accompanying drawings.
Dated 21st February 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C.