Improvements in Hauling Gear applicable to Machinery for Transmitting Power.
Year: 1892

page_text: Date of Application, 3rd Sept., 1892-Accepted, 15th Oct., 1892
'Improvements in Hauling Gear applicable to Machinery for
Transmitting Power.
I, CLAUDE WILLIAM ATKINSON, of 17 Victoria Street, in the City of
Westminster, Civil Engineer, do hereby declare the nature of my invention.and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
My invention relates to gears used for purpose of hauling or transmitting motion
and has for its object. the arrangement, and construction of mechanism, whereby
the hauling strain or, energy of transmission may be regulated to, any amount
within the scope, of the machine, and, does not, exceed a definite predetermined
amount.
My invention consists, in. arranging, between the power receiving portion and
trausmitting portion of a hauling, or transmitting gear, an epicyclic train, of three
or more wheels such as is known as a balance gear for, example. One, element of
the gear is connected with the prime mover, another element with the, device
receiving, the power, and the, third element, is frictionally, held preferably by a
brake drum and strap, with means for adjusting the pressure.
1
In order that my invention may be the better understood I will now proceed, to
describe the same in relation to a hauling gear for use with, coal cutting, machines
by way of example, and shown in the accompanying drawings, reference being had
to the letters and figures marked thereon. Like letters, refer to like, parts in the
various figures.
1.
Figure. 1.is a sectional plan, of a hauling gear according to my invention taken
through the axis, of the winding drum.
Figure 2 is a side elevation, the gearing being shown in dotted lines.
Figure 3 is an end elevation of the same.
Figure 4,is a diagrammatic view of the whole of the gearing.
Figures 5
5.5 and 6,, are, views, of the arrangement, of the guide pulley, and its
supports.
Upon a suitable, framework A I mount, a shaft, B journalled thereon, having a
worm B. This worm B gears into a worm, wheel C carried on and keyed to the
axle C¹, which also fixedly carries the pinion wheel D. The wheel D, gears, with
a wheel Ehaving a sleeve El journalled on the axle carried in suitable bearings G
on the main frame A and arm A¹‚On the opposite end of the sleeve El to that at
which the wheel E is situated, a wheel H is keyed, and in the space between the
wheels E and E', a brake drum I is loosely journalled upon the sleeve. E', around
which a brake strap Jis arranged,, having a.tightening.screw and wheel. K.
The brake drum I has loosely journalled upon it two epicyclic pinion wheels. L
cach of which gear into the wheel H.
On the right hand side of the gearing I mount the hauling drum M loosely on
the spindle F having a disc N provided with an internally toothed wheel O, which
also, gears into.the epicyclic pinion wheels L.
In Figure, 4, the relative, positions of the wheels, of, the gearing, are shown
diagrammatically.
The shaft B is provided with some form of connection to a prime mover, in the
present case it has a square hole a which, engages on to a square provided at the end
of the motor shaft on the cutting machine.
"The operation of my invention is as follows:-The worm wheel B' drives, the
wheel H through the medium of the shaft C wheels D and E and sleeve E. Now
when the brake strap Jgrips the drum I the whole of the motion of the wheel H

page_text: is transmitted to the hauling drum M by the epicyclic wheels L; when the brake
strap is released from the brake drum and the hauling drum is prevented from
turning by the strain of the rope then the whole of the motion of the wheel H is
transmitted to the brake drum, and consequently does no useful work. Any inter-
mediate condition of the three elements between the extremes hereinbefore described
will result in a fraction of the total motion of the wheel H being given to the
hauling drum and a fraction to the brake drum.
It will therefore be readily understood that by adjusting the load on the brake
strap a definite ultimate load may be determined for the hauling rope to carry, and
that when the resistance of hauling increases, and the load on the rope tends to
increase, such increase is prevented by the brake drum slipping under the grip of
the brake strap.
In the arrangement of gear as shown in the drawing, the motor shaft is geared
down to the hauling drum, the gear is therefore arranged for power, but it is
obvious that the elements of the epicyclic train can be arranged in two other ways,
so that the gear will be a speed gear, in other words any one of the elements may
be made the fulcrum of movement of the resultant motion.
In Figures 5 and 6 1 show an arrangement of guide pulley and its support
whereby the hauling gear bracket or frame A is relieved from the hauling strain
and the strain is transmitted by the hauling drum M without any of the strain being
transmitted to the bearings G of the axle F.
On the ends of the axle F I pivot two links P having their opposite ends to those
jointed to the axle connected together by a rod Q, upon which is loosely mounted
a guide pulley R adapted to slide sidewards from end to end of the rod Q as the
coiling of the rope on the drum requires. Upon the rod Q, two adjustable links S
are pivoted having their other ends T pivotably attached to the motor or frame-
work of the main machine, preferably 'as near as possible in the line of strain of
the hauling rope. The adjustment of the length of these links S is effected by
ineans of right and left handed screws s s and tubular nut s¹. If now the guide
pulley R is approximately the same diameter of the hauling drum M and the
links P be adjusted so that the lead of the hauling rope to the guiding pulley
and from the guiding, pulley to the hauling drum forms an angle a little less
than a right angle, the links P are put in compression and the lead from the
guide pulley to the hauling drum allows the hauling strain to take or assist in
taking the weight of the hauling gear, the remainder of the hauling strain being
taken by the links S which is communicated direct to the machine.
•
It will thus be seen that the gear framework per se does not have to resist the
hauling strain.
When the hauling is being effected from the opposite direction the links Pare
placed on the opposite side of the centre to that shown on the drawing.
"
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1st. In a hauling or power transmitting gear the combination of an epicyclic
train of three or more wheels with a frictional control upon one of the elements of
the epicyclic train.
2nd. In such a hauling gear a wheel forming one element of an epicyclic train
of wheels adapted for connection to a prime mover, a brake drum carrying another
element of the epicyclic train of wheels and a hauling drum or transmitting device
carrying another element of the epicyclic train, two of the elements being disposed
within the third element, substantially as described.
3rd. The arrangement and construction of a hauling or power transmitting
device substantially as described and illustrated in the accompanying drawings.
4th. In such a hauling gear, a hinged framework carrying a guide pulley pivotably
mounted at one end upon the main drum axle and a tie rod or rods connecting the

page_text: other end of the said framework to a rigid support on the main frame of the
machine the said rod or rods being adjustable to permit of the rocking of the hinged
framework about the axis of the drum so as to take the weight of the hauling gear,
substantially as described.
Dated this 3rd day of September 1892.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.