Improvements in Rotary Tipplers for Discharging Coal or other Minerals.
Year: 1897

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 Chief Examiner of the 20th day of May 1898.
Date of Application, 23rd Feb., 1897
Complete Specification Left, 23rd Nov., 1897-Accepted, 8th Jan., 1898
Improvements in Rotary Tipplers for Discharging Coal or other
Minerals.
We, WILLIAM OUTTERSON WOOD, of South Hetton, in the County of Durham,
Mining Engineer, and CUTHBERT BURNETT, of Fallowfield, South Hetton, afore-
said, Engineer, do hereby declare the nature of this invention to be as follows:-
In the Specification of our Patent No. 2949 of 1894 we described a rotary tippler
which while discharging or teeming moved more slowly than during the rest of
the rotation. We believe we were the first to describe such an arrangement. The
example shewn was one in which the speed was during one rotation once gradually
rising and once gradually falling, the slower part being during the teeming. Now
according to our present invention we give the tippler a uniformly slow speed, or
nearly so, during the teeming, and a uniformly quicker speed, during the rest of
the rotation, and the relative speeds, as well as the time occupied in performing
the complete revolution of the tippler may be varied as desired.
We provide the tippler on each side at the periphery with a segmental projection
or enlargement and we provide on the driving wheel axle two additional driving
wheels of correspondingly reduced diameter which during the time of teeming
engage with the segmental enlargements. In connection with this arrangement
we employ stopping and starting mechanism of the character described in our
aforesaid patent specification.
The usual trap or other equivalent devices for regulating the flow of the coal
over the screens may thus be omitted, the load on the screens will be reduced, a
shorter and lighter screen may be used, and the coal will suffer less damage than
by the ordinary tipplers.

page_text: said, Engineer, 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:-
In the Specification of our Patent No. 2949 of 1894 we described a rotary tippler
which while discharging or teeming moved more slowly than during the rest
of the rotation. We believe we were the first to describe such an arrangement.
The example shown was one in which the speed was during one rotation once
gradually rising and once gradually falling the slower part being during the
teeming.
We provide the tippler on each side at the periphery with a segment-piece and
we provide on the driving wheel axle two additional driving wheels of correspond-
ingly reduced diameter which during the time of teeming engage with the segment-
pieces. In connection with this arrangement we employ stopping and starting
mechanism of the character described in our aforesaid patent specification.
In the accompanying drawing Fig. 1 is an end elevation Fig. 2 side elevation
and Fig. 3 a plan of an arrangement of this kind.
The tippler is in the position shewn in Fig. 1 supported on the wheels A and A',
the former being the driving wheels fixed on a spindle C and the latter merely
supporting wheels, fixed on a spindle D. On cach rim or side B of the tippler
we provide a segment-piece Q and on the driving wheel spindle C we provide two
additional driving wheels P of correspondingly reduced diameter which during the
time of teeming engage with the segment-pieces Q. The stopping and starting
mechanism may as shewn be the same as the one described in our aforesaid patent
specification or may be of any other suitable form. While the driving wheels A
are in engagement with the rims B the tippler rotates quickly comparatively speak-
ing, but while the driving wheels P are in engagement with the segment pieces Q
the tippler rotates slowly comparatively speaking that is to say during the teem-
ing. The rims B and segment pieces Q as well as the driving wheels A and P
may be provided with teeth for positive instead of frictional gear. By making
the segment pieces Q detachable facility may be given for varying the length of
the slow part of the rotation.
The usual trap or other equivalent devices for regulating the flow of the coal
over the screens may thus be omitted, the load on the screens will be reduced, a
shorter and lighter screen may be used and the coal will suffer less damage than
by the ordinary tipplers.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we wish it to be understood
that we are aware of Patent No. 1180 of 1896, granted to Fred Turnbull, and that
we claim nothing described and claimed in the specification of the said patent and
we declare that what we claim is:.
1. The application laterally to the rims of rotary tipplers of segment-pieces Q in
combination with driving wheels of correspondingly reduced diameter which
during the teeming engage with said segment-pieces and drive the tippler at a
slower speed than during the rest of the rotation, substantially as and for the
purpose set forth.
2. The improved construction of rotary tippler described and shewn.
Doted th
21.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.