Year: 1888

page_text: Date of Application, 31st Aug., 1888
Complete Specification Left, 8th Jan., 1889
Complete Specification Accepted, 16th Feb., 1889
I WILLIAM JACKSON of Thorn Grove Mannofield Aberdeen North Britain
Gentleman do hereby declare the nature of this invention to be as follows:-
My Invention relates to tea drying apparatus wherein the tea leaf is carried through
the drying chamber upon travelling webs or endless bands or carriers of perforated
metal and the object of my invention is to enable the leaf to be spread evenly
and properly upon the webs hands or carriers and to ensure the proper discharge of
the dried leaf.
According to my Invention I impart to the webs bands or carriers an intermittent
motion in such a manner that at the requisite intervals portions of the top band web
or carrier are presented before the charging inlet and remain there for a time to admit
of charging and spreading the leaf and then the webs bands or carriers are moved on
and the following portion of the top web band or carrier is exposed to have the leaf
placed and spread thereon, and so on.-I may effect this movement by various
arrangements of mechanism such for example as by means of arms on the axis of
one of the pulleys over which the webs bands or carriers pass with which a projection
on a wheel comes into contact at intervals but I generally prefer to derive a slow
speed from the fan of the apparatus and to connect to the axis of the slow speed
wheel a slotted crank arm, dise pin, or excentric or the like to which a rod is connected
the other end of the rod being attached to a pawl engaging with a ratchet wheel
fixed on the axis of one of the pulleys of the webs bands or carriers so that the pawl
alternately moves the webs bands or carriers in the intermittent manner hereinbefere
described. In order to effect the proper discharge of the dry leaf I attach to the azi
of the pulley of the web band or carrier near to the discharge a knocker which at
intervals acts on a lever attached to the door so that the door is opened and
the tea discharged the door in the intervals being kept closed by being counter
weighted if necessary.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.

page_text: I WILLIAM JACKSON of Thorne Grove Mannofield Aberdeen North Britain
Gentleuuan 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 :--
My Invention relates to tea drying apparatus wherein the tea leaf is carried
through the drying chamber upon travelling webs or endless bands or carriers of
perforated metal and the object of my Invention is to enable the leaf to he spread
evenly and properly upon the webs bands or carriers and to ensure the proper discharge
of the dried lenf.
According to my Invention I impart to the webs bands or carriers an intermittent
motion in such a manner that at the requisite intervals portions of the top band web
or carrier are presented before the charging inlet and remain there for a time to admit
of charging and spreading the leaf and then the webs bands or carriers are moved
on and the following portion of the top web band or carrier is exposed to have the
leaf placed & spread thereon; and so on.-I may effect this movement by various
arrangements of mechanism such for example as by means of arms on the axis of
one of the pulleys over which the webs bands or carriers pass with which a projection
on a wheel comes into contact at intervals but I generally prefer to derive a slow
speed from the fan or other suitable rotating part of the apparatus and to connect to
the axis of the slow speed wheel a slotted crank arm, crank disc, or eccentric, or the
like as shewn for exaruplo at A in Figure 1 of the accompanying drawings to which
crank disc or the like a rod B is connected the other end of the said rod being
attached to a lever C centered at D on the axis of a ratchet wheel E and carrying a
pawl Fengaging with the said ratchet wheel which is fixed on the axis of one of the
pulleys of the webs bands or carriers so that the said pawl F alternately moves the
webs bands or carriers (through the usual gearing or ile top web band or carrier only)
in the intermitient manner herein before described. In order to effect the proper
discharge of the dry leaf I attach to. the axis of the pulley of the web band or
carrier near to the discharge a device which may consist of a knocker G which at
intervals acts on a lever H attached to the discharge door I as shown in Figure 1 and
in the view at right angles thereto in Figure 2 so that the said door is opened and
the tea discharged the door in the intervals being kept closed by being counter-
weighted if necessary. Figures 3 and 4 shew in views at right angles to each other
a modification of the device in which a rod J is centered to a crank pin on a pulley
dise K the said rod J being provided with a weight j and with a tooth 2. On the
door I is fixed a piece L having a resting surface for the weight and with a tooth (2
which as the pulley disc K revolves is engaged and released at intervals by the tooth
so that the piece L (and consequently the door) is drawn over to open the discharge
outlet and is then released to allow the door to close.

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 :-
1. In apparatus for drying tea means for imparting to the top band web or carrier
an intermittent motion so as to remain before the charging inlet a time requisite
for charging and spreading the leaf and then to move forward to present a fresh
portion of the band web or carrier for charging and spreading substantially as
hereinbefore described.
2. In combination with apparatus for drying tea the crank disc or the like connecting
rod pawl and ratchet wheel for giving intermittent movement to the top band web or
carrier as and for the purpose herein before described and as illustrated in the
accompanying drawing.
3. In apparatus for drying tea the combination with the wet band or carrier near
the discharge or outlet for the leaf of a device for opening the discharge door at
intervals substantially as hereinbefore described.
4. The several arrangements for opening the discharge door at intervals
substantially as hereinbefore described and illustrated in the accompanying drawings.
5. In apparatus for drying tea leaf the combination of means for operating the
top web band or carrier in the manner and for the purpose described with
means for opening the discharge door at intervals substantially as herein before
described.
Dated this Fifth day of January 1889
.