Improvements in Rotary Tipplers for Discharging Coal or other Minerals.
Year: 1894

page_text: Date of Application, 10th Feb., 1894
Complete Specification Left, 12th Nov., 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Rotary Tipplers for Discharging Coal or other
Minerals.
We, WILLIAM OUTTERSON WOOD, Mining Engineer, and CUTHBERT
BURNETT, Mechanical Engineer both of South Hetton, in the County of Durham,
do hereby declare the nature of this invention to be as follows:-
The object of these improvements is to simplify and cheapen the construction of
rotary tipplers for discharging coal and other minerals on to screens or otherwise.
The improvements refer mainly to the driving of the tippler and to the brake and
result in the dispensing with any clutch for starting and stopping the apparatus,
the whole apparatus being worked by one lever for starting, which lever when the
tippler has been brought into its normal position again automatically effects the
stopping of the apparatus. We drive the tippler by friction wheels which then
constitute its support on one side at both ends, but which when the tippler is
stationary do not so support it, the support being in that case afforded by a brake
block at one or both ends.
A suitable form of the apparatus is as follows:-
The tippler when rotating is supported by four wheels, two at each end. The
two wheels at one side are constantly rotated frictional driving wheels, while the
two wheels at the other side are free wheels. A brake block is applied at one or
both ends of the tippler to the lower part of same near the driving wheel side.
The block is hinged by a link to the bed plate and also connected to a wedge or
toggle levers, by preference the latter. This wedge or these toggle levers are by a
rod connected to the lower end of a double armed starting lever mounted on the
other side of the tippler and which may have its fulcrum on the spindle carrying
the two free supporting wheels. When the apparatus is at rest the tippler-is by the
brake block or blocks slightly raised so as to be free of driving contact with
the driving wheels. The starting lever then rests against a stop on one of the
tippler rings.
To start the apparatus the lever is lifted clear of the stop and pulled over 80
that the toggle levers are drawn towards the collapsed position whereby the brake
block is lowered from off the tippler which latter drops upon the driving wheels and
is caused' to make a whole turn round, whereupon the aforesaid stop coming against
the starting lever turns it automatically into its normal position of rest and thereby
applies the brake and raises the tippler clear of the driving wheels, that is to say,
brings it to a standstill. The whole motion is smooth and without jerks. In
order to facilitate the starting we prefer to mount the rails carrying the coal tub
somewhat out of centre away from the driving wheel side. It will be understood
that we may have a driving wheel either at one end only or at both, and that we
may have a brake block at one end only or at both and in the latter case worked
in unison by means of one lever.
Dated this 10th day of February 1894.

page_text: Improvements in Rotary Tipplers for Discharging. Coal or other
Minerals.
We, WILLIAM OUTTERSON WOOD Mining Engineer and CUTHBERT BURNETT
Mechanical Engineer both of South Hetton in the County of Durham 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:-
The object of these improvements is to simplify and cheapen the construction of
rotary tipplers for discharging coal and other minerals on to screens or otherwise.
The improvements refer mainly to the driving of the tippler and to the brake and
result in the dispensing with any special clutch for starting or stopping the
apparatus, the whole apparatus being worked by one lever for starting which lever,
when the tippler has been brought into its normal position again, automatically
effects the stopping of the apparatus.
We drive the tippler by friction wheels which wheels then constitute its support
on one side at both ends, but which when the tippler is stationary do not so support
it, the support being in that case afforded by a brake-block at one or both ends.
Or instead of friction driving gear we may employ tooth wheel driving gear.
Figure 1 of the accompanying drawings is an end view of one form of apparatus
and Figure 2 a part side view.
The tippler when rotating is supported by four wheels A A and A' A¹ upon
which rest the two wheels or rings B. The two wheels A at one side are fixed
upon a shaft C which is constantly rotated and these wheels constitute driving
wheels, while the two wheels A' on the shaft D are free wheels. A brake block Ĕ
is applied at one or both ends of the tippler, to the lower parts of same near the
side of the driving wheels A say against the wheels B or against separate brake
pulleys. The block E is hinged by a link F to the bed plate G and also connected
to a wedge or by preference to toggle levers H. This wedge or these toggle
levers H are by a block I and a rod J connected to the lower end K' of a double
armed starting lever K mounted on the other side of the tippler and which may as
shewn have its fulcrum on the bracket L forming bearing for the spindle D
carrying the two free supporting wheels A' or on the spindle D itself. When the
apparatus is at rest the tippler is by the brake block or blocks E slightly raised so
that the wheels B are free of driving contact with the driving wheels A. A. The
starting lever K then rests against a stop M on one side of the tippler wheels or
rings B. To start the apparatus the lever K is lifted clear of the stop M so that
the latter becomes clear of the recess in the lever, and the lever is then pulled over
so that the toggle levers H H are drawn towards the collapsed position whereby
the brake block E is lowered from off the wheel or ring B of the tippler which
latter drops upon the driving wheels A. and is caused to make a whole turn round,
whereupon the stop M comes against the starting lever K turns it automatically
into its normal position of rest and thereby applies the brake and raises the tippler
rings B clear of the driving wheels A, that is to say, brings the tippler to a
standstill the dotted lines shew the stop M and the lever K at the first moment
of contact.
The whole motion is smooth and without jerks.
In order to facilitate the starting we prefer to mount the rails N which carry
the coal tub somewhat out of centre away from the driving wheel side as shewn.
It will be understood that we may have a driving wheel either at one end only or
at both and that we may have a brake block at one end only or at both and in the
latter case worked in unison by means of one lever. O is a weight on an arm of

page_text: the lever K K for bringing the lever back into its normal position when it has been
let go, or a spring may be used instead.
Figure 3 is an end view and Figure 4 a part side view of a tippler with modified
arrangement of brake. The wheel or ring B is fitted with an adjustable friction
block B' against which the brake block E acts. The latter is at one end hinged
on a pin E, and at the other end connected to a shaft H which has bearing
gudgeons that are eccentric to the other or main part of the shaft which acts upon
the brake block E and has fixed on it a lever K. When the latter is pulled over
into the dotted position the brake block E will, because of the eccentricity of the
shaft H, drop away from the friction block B₁ and allow the periphery of the
tippler rings B to engage with the driving wheels A and be rotated.
The brake
block E has a stop E2 to ensure the tippler stopping at a certain determined
point.
Figure 5 is an end view showing the application of our invention to the positive
driving gear described in our Patent Specification No. 4534 of 1891 the difference
of the arrangement as compared with Figures 1 to 4 of present Specification
being that tooth wheels are employed instead of friction wheels. We find it
advantageous in this case to make the driving pinion A comparatively larger than
in the case of friction wheel gearing, and the pinions A. may be shrouded for the
sake of strength.
Figure 6 is an end view of another positive driving or tooth gear arrangement in
which the driving wheels A are made still larger or of the same diameter as the
wheels B the speed being moreover made variable by the employment of eccentric
elliptic tooth wheels Q on the shaft of the pinions A and eccentric elliptic tooth
wheels P on the driving shaft R. This eccentric gearing is so arranged that the
tippler starts rather quickly until the tub commences to deliver, aud then rotates
slowly during delivery, but when the tub has emptied itself to complete the cycle
rather quickly.
The arrangement shown is for side tipplers but it is equally applicable for end
tipplers. The form of the elliptic wheels must be made to suit the special
requirements.
The driving shaft R is provided with clutch which is thrown out of gear by
coming in contact with a stop on the frame and can be thrown into gear by means.
say of a hand lever which releases the clutch gear from the stop.
The dotted lines represent the screen.
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. A rotary tippler supported by four wheels, two at each end and provided with
means for rotating the tippler and with a brake at one or both ends for lifting it
out of gear with such means for rotating when the rotation of the tippler is to be
stopped substantially as set forth.
2. A rotary tippler supported by four wheels two at each end, the wheel or
wheels at one side being adapted to rotate the tippler by gearing with a wheel or
wheels on the tippler the latter being provided with a brake at one or both
ends for lifting it out of gear with the driving wheel or wheels substantially as
set forth.
3. The constructions of rotary tippler with frictional and positive driving gear
as described with reference to the drawings.
Dated this 12th day of November 1894
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agenta.