December 4, 1914.

THE COLLIERY GUARDIAN.

1189

principal parts. A depending body a, which is hung by a
hook b, from the coupling of a corve or like vehicle, is so
constructed as to gradually widen towards its lower end, to
which is attached a hinged arm or lever c, constructed so as
to fold upwards on to the side of the previously mentioned
body a. On each side the hinge is formed a deep groove,
so that when the two parts are closed together a circular
groove or channel d is formed to receive the rope e. The
two parts when closed are secured together by a close ended
sliding shackle /, and as the two folding parts are gradually
tapered wider to their lower extremities, they are firmly
secured when the shackle / is forced or knocked down on to
them. When it is desired to couple the grip to a haulage
rope the shackle is removed in an upward direction clear of
the end of the hinged arm or lever c, which then falls away
from the depending body a, and is then itself suspended by
the hinge. When the body of the clip has been laid with
its groove alongside and parallel with the rope, the folding
part is turned up again so as to enclose the rope and grip

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the same when the shackle is knocked down. In order to
more firmly secure the clip to the rope, two wedge-shaped
bolts g, are provided*, one on each side the central hinge,
which are actuated by an external lever h, which is pivoted
on the back of the dependent body part of the clip a, the
long arm of which lever extends far enough to be approxi-
mately opposite the upper end of the previously mentioned
hinged arm or lever c, when the rope has been enclosed and
gripped, and is therefore in a position to be likewise
operated with the same shackle, only that in this case the
shackle is forced between the bolt lever h, and the side of
the dependent body a, of the clip, thereby forcing the long
end of the bolt lever outwards, and correspondingly forcing
the wedge-shaped bolts g on its short end inwards. When
this bolt lever is in that position the bolts are forced between
the side of the rope e and the side of the groove d, thereby
intensifying the grip, and when the shackle is knocked
upwards to release the folding part of the clip, the bolts are
likewise released. As a further means of securing the rope
inside the grooves, there is sometimes inserted a steel plate i,
with a serrated edge, which will engage with the separate
strands of the rope when the clip is closed. (Three claims.)

9642 (1914). Improvements in and Relating to Jigging
Tubs of Mineral Separators. W. Watson, of Settlingstones
Mines, Fourstones, near Newcastle-on-Tyne, Northumber-
land.—Relates to the jigging tubs of mineral separators of
the general type, wherein a supplementary box or chamber
is provided in juxta-position to the usual separating box or
chamber, the material from which latter has access to the
former through a suitable aperture connecting the two, the
effective area of which may be enlarged or reduced according
to circumstances by means of an angularly arranged baffle
plate capable of adjustment in relation to the aperture afore-
said. In accordance with the invention, the separated

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materials in both the supplementary chamber and the conical
hopper are kept distinct from one another by arranging that
there is no communication between the two, the contents of
the supplementary chamber being separately collected and
retained distinct from the smaller particles in the conical
hopper. A further object is more effectively to control the
effective area of the aperture connecting the separating
chamber to the supplementary chamber by making the baffle
plate angularly adjustable thereto, in lieu of the usual method
which consisted of allowing such baffle plate to have a
vertical sliding movement in front of the aperture in ques-
tion. Fig. 1 is an end view of the apparatus partly in sec-
tion ; fig. 2 is a side elevation; and fig. 3 a plan. (Three
claims.)

10229 (1914). Improvements in Hoisting Apparatus. P.
M. Christie, of Rural Free Delivery No. 1, Box 77, Urbana,
Indiana, U.S.A.—Relates to improvements in hoisting appa-
ratus for producing a hoisting device provided with power
and manually controlled speed regulating means so that the
load may be slowly and gently started from its initial posi-
tion, and as it is raised the speed can be gently increased
and again decreased without abruptness as the end of its
journey is approached. Fig. 1 is a plan of the improved
apparatus; fig. 2 is a section taken on line 2—2 of fig. 1;

fig. 3 is a side elevation of fig. 4 taken from the side indi-
cated by the line 6—6; fig. 4 is an end view of the clutch and
transmission pulleys. The apparatus comprises a suitable
frame 1, upon which bearings 2, 2, are carried, in which the
load shaft 3 is journalled that carries the rope drum 4, about
which the rope is disposed that carries the load; this rope
may extend over a suitable pulley, and thence to the load if
the.load is to be raised to a point above the elevation of the
drum 4. Upon the shaft 3, belt pulleys 5, 6, are keyed, over
which belts 7,8, respectively, work which belts also, respec-
tively, engage transmission pulleys 9, 10, the belt 7 being
crossed to effect a reverse movement of the shaft 3, which
are loose upon the transmission shaft 11 journalled in bear-
ings 12, 12, carried by the frame 1; 13 is a clutch keyed to
the shaft 11, and capable of engagement with either of the
pulleys 9 or 10 through the medium of the yoke 14 operated

FIG 2

by the lever 15, that works over the rack 16, secured to the
frame 1, to retain either pulley in engagement with the
clutch. Upon one end of the transmission shaft a friction
transmission wheel 17 is disposed that is constantly in
engagement with the speed adjusting friction wheel 18 that
is terminally mounted upon a power shaft 19 disposed in a
rotary sleeve 20, journalled in bearings 21, 21, carried by
the frame 1, and upon said sleeve a power wheel 22 is
secured that receives power direct from the engine (not
shown). A threaded shaft 23, supported in a guide 24, and
provided with a hand wheel 25, is projected into the sleeve
20, to engage the shaft 19, to move the same longitudinally,
thus moving the wheel 18 toward or away from the centre
of the wheel 17, and so diminishing or increasing the speed
of the wheel, and consequently the speed of the load shaft, as
desired.: To lock the load on its journey, the pulleys 9 and
10 are thrown out of engagement with the clutch, and the
load shaft locked by a suitable pawl arrangement (not
shown). (Three claims.)

11816 (1114). Improvements in Rotary Fans, Compres-
sors, and Pumps. La Societe d’Exploitation des Appareils
Rateau, of 7, Rue de Madrid, Paris, France.—Relates to an
improved construction and method of assembling the parts
of the wheels of rotary fans, compressors, and centrifugal
pumps, more particularly those having a small output, and
is characterised by the fact that the rear disc of a wheel is
constituted by a member having a flat or slightly conical
front face and a rearwardly extending prolongation to form

a hub for securing it to the shaft, the bottom of the fluid
inlet being completed by a distance piece in the form of a
sleeve having the required shape for guiding the fluid. This
arrangement permits the direct insertion of a tool for use
in joining the front and rear discs together, and thus
enables wheels to be constructed as flat as may be required.
The accompanying drawing shows, by a longitudinal axial
section, the method of assembling the parts in accordance
with the invention. (Two claims.)

24529 (1913).^ Improvements in or Applicable to Appli-
ances for Lifting, Hauling, Straining, and other Similar
Purposes. W. Sylvester, of Scotia Works, Tunstall, Stoke-
on-Trent, Staffordshire.—Relates to improvements in lifting,
hauling, or straining appliances, principally of the kind in
which a lever and pawls are used in conjunction with a
toothed wheel or wheels to operate a drum, pulley, or chain
block wheel, and in which means are provided whereby the
operating lever may be worked in a similar manner either
when hauling or lowering, the hauling or lowering being
effected tooth by tooth. In such appliances the reverse
movements of the pawls are controlled by a lever, or by
triggers, the operative and inoperative positions of which are
determined by a cam, and with which lever or triggers the
pawls alternately engage to release them from the toothed
wheel or wheels. The invention has for its objects, first, a
self-contained lifting, hauling, or straining appliance speci-
ally suitable for use in mines for drawing props and for
like purposes; second, an improved combination and arrange-
ment of pawls and pawl reversing mechanism; third,
improved means for preventing the drum or pulley being
unwound too far so as to cause damage to the rope or cable
by the backward bending action which may result: and
fourth, improved means for enabling any ordinary mechanic
to replace the old rope with a new one. The objects are

attained by the mechanism illustrated in the accompanying
drawings, in which the improvements are shown in connec-
tion with a drum suitable for use with a flexible wire rope or
the like, and to which drum are attached two side plates or
discs having ratchet teeth on their peripheries. Fig. 1 illus-
trates a side elevation of the improved appliance, with both
pawls engaging the ratchet teeth when about to wind the
rope or cable upon the drum, the reversing mechanism being
out of action; fig. 2 illustrates an inverted plan of fig. 1;
fig. 3 illustrates a side sectional elevation of the appliance,
showing the position of the operating lever at the beginning
of the lowering or releasing stroke; fig. 4 illustrates a side
elevation (partly sectional) of the improved appliance, but
the reverse side to fig. 1; fig. 5 is a cross sectional elevation
(in part) of fig. 4; fig. 6 illustrates an end elevation of the
means employed for keeping the rope even on the drum. The
method of unwinding is as follows : The handle i2 is turned
round from the position shown in fig. 1 to that shown in
fig. 3, so that the eccentric i (which before held the reversing
arm studs or pans g1, g2, clear of the pawls c1, c2) lies out
of contact with the reversing arm, and leaves the arm free to
act through its studs g1, g2, alternately upon each of the
pawls c1, c2. With the retaining pawl c1 taking the load,
and the pawl c2 then moved in the direction of the arrow x,
the effect is to put the load on to the pawl c2 and relieve the
retaining pawl c1. Immediately the latter is relieved of the
load, the reversing arm f, through pin gx, lifts or draws the
pawl c1 out of its notch to hold it clear until the point of the
back tooth has passed, the movement of the reversing arm,
to cause the pin g1 to act on the pawl c1, being brought
about by the force of the spring h1 and by the pin g2
coming into the depression c3 of the pawl c2 as the pawl c2
moves forward (see fig. 3). As the handle e is next moved
in the direction of the arrow y, the projection or swelling c4
formed on the inner face of the pawl c2 comes into contact
with the stud g2, and as the pawl c2 is drawn past the stud
g2, the swelling c4 causes the arm f to be moved towards the
drum a, thereby removing the outward force exerted by the
arm through stud g1 upon the pawl c1 and allowing such
pawl, under the influence of spring h1, to move into the next
notch ready to take the pressure of the load from the pawl c2.
Immediately the pawl c1 has taken the pressure from the
pawl c2, the arm f, through the medium of the spring h2,
and stud g2, moves the pawl c2 out of its notch or tooth, and
holds it clear until it has again been moved in the direction
of the arrow x to bring the depression c3 on the inner face of
the pawl c2 opposite the stud g2. In such position of the
pawl c2, relatively to the stud g2, the stud g1 is in contact



i

with the bottom of the depression cs formed in the pawl cl
(see fig. 3), and thus prevents the stud g2 having any further
effect on the pawl c2, which latter engages the next notch
which it has then reached. As soon as the pawl c2 engages
the next notch the pressure of the load is removed from the
pawl c1 to the pawl c2, and the pawl c1 again made free as
before described, the alternate freeing of each pawl being
repeated until the load has been sufficiently lowered or
released. A shoulder d4 on the frame serves to limit the
movement of the lever e in the direction of the arrow y.
When the rope or cable is being unwound quickly there is a
danger, immediately the last coil is run off, of the rope or cable
being subjected to a bending action which in time would
seriously damage the rope or cable. To prevent this toothed
wheels n1, n2, similar to those used in the overwind actions
of clocks, are mounted on the drum and frame respectively
(see fig. 4). The stop action of the wheels n1, n2, is brought
about by the wheel n1 having a shallow notch n3, and the
wheel n2 having on tooth, n4, longer than the remaining
teeth. The wheels are also made of sufficient size and
pitch proportionately to allow the drum to make the requisite
number of revolutions before the large tooth n4 shall engage
with the shallow notch n3 to bring about the stoppage. To
enable an ordinary mechanic to replace the wire rope or
cable, it is fitted and supplied with a cap or socket o made
to the curvature of the drum (see figs. 3 and 5). The cap
or socket is riveted or otherwise secured to the drum at o1,
and abuts against a shoulder or projection a1 on the drum.
In a modification the cap or socket o may be hinged to a
spindle p passing through the drum a. With this last-
named method of attachment the fixing and detaching of the
rope or cable will be greatly facilitated, and the stop wheels
n1, n2, may be dispensed with. The above described method
of fixing the rope or cable also serves to distribute the weight
of the load more equally upon each of the wires constituting
the rope when there is a weakness near the cap. The object
is still further attained by capping the rope when the rope
and cap are placed in the same curved position as it will
occupy when fitted to the drum. The wires of the rope will
preferably be secured in the cap by a filling of white metal
or other suitable alloy. Although the use and application
of a wire rope or cable is described, it is to be understood