Improvements in Rotary Tipplers for Discharging Coals to a Lower Level.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Comptroller General of the 15th day of March 1898.
Date of Application, 21st Sept., 1896
Complete Specification Left, 21st June, 1897-Accepted, 31st July, 1897
PROVISIONAL SPECIFICATION.
Improvements in Rotary Tipplers for Discharging Coals to a Lower
Level.
We, HENRY CLARK and JUSTUS MAGNUS RINGQUIST, Draughtsmen, and the Firm of
HEAD, WRIGHTSON AND COMPANY, LIMITED, Engineers, all of the Teesdale Iron
Works, Thornaby-on-Tees, in the County of York, do hereby declare the nature of
this invention to be as follows:-
This Invention relates to rotary tipplers for discharging coals to a lower level as
upon a screening apparatus, and has special reference to the mechanism for con-
trolling the same by which the said tippler is turned round and brought to a stand
again in the upright position.
Rotary tipplers of the kind to which this invention applies are driven from a
shaft constantly revolving, but the means hitherto employed for putting the con-
trolling mechanism in or out of gear at the right moment is too complicated and
expensive both in construction and action.
The object of our invention is to devise a simple and reliable arrangement of
clutch mechanism for controlling the apparatus and stopping and starting the same
in the manner required.
In carrying our invention into effect, we construct the tippler in the usual form,
that is, with two circular end frames into which the tub is run in the usual manner.
The tippler is supported on four pulleys in contact with the circular end frames
of the tippler, the said pulleys being placed below at suitable positions to take
the whole weight of the tippler and its contents. One or both of these circular
end frames of the tippler is in the form of a tapered or wedge shaped rim which runs
in a correspondingly recessed driving wheel mounted loosely on the constantly
revolving driving shaft. The said driving shaft is provided with a clutch sliding
on the said shaft and actuated by a clutch lever which can be worked from a foot
or hand lever, so that when the lever is depressed the clutch engages with the
loose driving wheel which causes the tippler to revolve.
In order to disengage the clutch at the right moment, the periphery of the
circular ring or end frame is furnished with a wedge piece fixed in the requisite
position so that when the tippler has made one revolution the wedge piece comes
in between the clutch and the driving wheel so as to throw it out of gear, and this
is done automatically. On the circular ring is provided a stop piece which by
suitable connections can be actuated so as to bring the apparatus quickly to rest
after disengagement of the friction clutch. The empty tub is now removed and
another full tub takes its place. The operation is then repeated.
It is obvious from the above description in which the driving operation is by.
friction, that tooth gearing or chain wheel gearing may be employed for the same
purpose without departing from the essential feature of our invention which is to

page_text: be found in the above described means for disengaging the tippler and bringing
it to a stand at the right moment.
Dated this 19th day of September 1896.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees,
Agent for the Applicants.
COMPLETE SPECIFICATION (AMENDED).
Improvements in Rotary Tipplers for Discharging Coals to a Lever
Level.
We, HENRY CLARK, JUSTUS MAGNUS RINGQUIST, Draughtsmen, and the Firm of
HEAD, WRIGHTSON AND COMPANY, LIMITED, Engineers, all of the Teesdale Iron
Works, Thornaby-on-Tees, in the County of York, 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 rotary tipplers for discharging coals or other material
to a lower level as upon a screening apparatus, and has special reference to the
mechanism for controlling the same by which the said tippler is turned round and
brought to a stand again in the upright position.
Rotary tipplers of the kind to which this invention applies are driven from a
shaft constantly revolving, but the means hitherto employed for putting the con-
trolling mechanism in or out of gear at the right moment is too complicated and
expensive both in construction and action.
The object of our invention is to devise a simple and reliable arrangement of
clutch mechanism for controlling the apparatus and stopping and starting the same
in the manner required.
And in order that our invention may be clearly understood and readily carried
into effect, we will now proceed to describe the same with reference to the accom-
panying drawings, in which the like letters of reference indicate corresponding
parts in all the figures.
Fig. 1. is a sectional elevation taken on line z of Fig. 2. which is a side eleva-
tion of a coal tippler driven frictionally and fitted with the controlling mechanism
constructed according to our invention.
Fig. 3 is an end elevation and Fig. 4. a side elevation of a coal tippler driven
by tooth gearing and fitted with the controlling mechanism constructed accord-
ing to our invention.
Referring to Figs. 1 and 2, a is the tippler which we construct in the usual form,
that is, with two circular end frames at a into which the tub is run in the usual
manner. The tippler is supported on four rollers 61 62 63 64 in contact with the
circular end frames of the tippler all of which rollers are shown in Fig. 2; the said
rollers being placed below at suitable positions to take the whole weight of the
tippler and its contents. One or both of these circular end frames of the tippler
(preferably a¹) is in the form of a tapered or wedge shaped rim which runs in a
correspondingly recessed driving wheel 6 mounted loosely on the constantly
revolving driving shaft c. The said driving shaft is provided with a clutch d
sliding on and keyed to the said shaft and actuated by a clutch lever d¹ which can
be worked from a foot or hand lever d³, so that when the lever is depressed the
clutch & engages with the loose driving wheel 61 which causes the tippler to
revolve. In order to disengage the clutch d at the right moment the periphery
of the circular ring or end frame a¹ is furnished with a wedge piece e fixed in
the requisite position and otherwise adjusted to its purpose so that when the tippler

page_text: is completing a revolution the wedge piece e comes in between the clutch d and
the driving wheel 61 so as to throw it out of gear automatically. On the circular
ring of the tippler frame is provided a stop piece or buffer f which is adjusted in.
form and position to come into contact at the right moment with the periphery of
the clutch d to bring the apparatus quickly to rest after disengagement of the
clutch d. The empty tub, corve or tram is now removed and another full one
takes its place. The operation is then repeated.
It is obvious from the above description in which the driving is effected by
friction, that tooth gearing or chain wheel gearing may be employed for the same
purpose without departing from the essential feature of our invention which is to be
found in the above described means for disengaging the tippler and bringing it
to a stand at the right moment.
Referring to Figs. 3 and 4, which illustrate the adaptation of our invention to
a modified construction in which toothed gearing is employed instead of frictional
gearing for driving the tippler, the circular end frames a¹ a are of ordinary con-
struction and are supported on four plain rollers of which 61 62 are shewn in Figs. 3
and 4. A spur wheel g is formed in connection with the circular end frame a¹ of
the tippler into which gears a spur pinion h formed in connection with the driving
roller and loosely mounted on the driving shaft c. The clutch d is actuated by
the hand lever d¹. The action of the wedge piece e and stop piece f is precisely
the same as already described with reference to Figs. 1 and 2. i is a flat steel
spring secured on the side of the screen so that when the tippler approaches the
upright position a projection ; on the periphery of the circular end frame a¹ comes
in contact with the said spring and brakes the tippler. This device is a useful
auxiliary in certain cases to the brake arrangement provided by the contact
between the stop piece f and the clutch periphery, as tending to prevent a too great
shock in the impact between the stop piece and clutch.
The special advantage of the construction of tippler as hereinbefore described is
that the tippler cannot over-run itself, but is brought to a stand at the right
moment by a simple and effective arrangement which disengages the tippler from
the driving shaft and applies a brake automatically and to the instant without refer-
ence to the vigilance or negligence of the person in charge.
Having now particularly described and ascertained the nature of our said inven-.
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. In rotary tipplers for discharging coal or other material the use in combina-
tion with driving mechanism of the tooth, friction or equivalent wheel gearing
type of controlling mechanism in which a wedge piece such as e attached to the
circular end frame of the tippler and acting upon the clutch disengages the tippler
from the driving shaft, in conjunction with which a stop piece such as f is applied
in contact with the clutch periphery to stop the tippler with or without the aid of a
device such as the spring i, all arranged and operating together substantially as
described with reference to the accompanying drawings.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees and Hull,
Agent for the Applicants.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees and Hull,
Agent for the Applicants.