Apkil 24, 1914

THE COLLIERY GUARDIAN.

917

ABSTRACTS OF PATENT SPECIFICATIONS
RECENTLY ACCEPTED.

6990 (1913). Improvements in or relating to Apparatus for
the Automatic Prevention of the Overwinding of Colliery Cages
and the like. H. D. Bayley, or Lenton Abbey, Beeston,
Notts, and B. Froggatt, of 34, Thames-street, Bui well,
Nottingham.—Supplementary to Patent No. 5273,/1909. In
the present improvements, fig. 1 is a diagram showing the
invention as applied to a typical winding engine, and fig. 2
shows the larger view of tbe spiral and actuating gear. In
the previous patent a spiral disc was secured direct to the
flange of the winding drum of uniform diameter for all
cases, but now use is made of a separate spiral disc A, of
uniform diameter, which is connected up to the crank motion
by the sprocket chain B in a similar manner to what has
been done in connection with electric lifts and the like.
The sprocket wheels, C and D, are varied in diameter to
suit differing speeds and depths of shaft, whereas in the
previous patent it would have been necessary to make
different diameters of disc to suit varying conditions. The
disc A is of cast iron with the spiral grooves cast on solid, and
these grooves may be of uniform pitch, or may be arranged
with a variable pitch to give a greater amount of travel at
any period of the wind. The spiral A is carried on the shaft
E, which is supported in bearings fixed on frame F. Another
shaft GF is supported on the underside of frame F on which
is secured the long lever H and with GF as fulcrum, the free
end of H, which at its extremity carries a steel roller I,
traverses the arc I J as the disc revolves. On GF a short
lever K is fixed, the free end terminating in a forked joint,
in which the contact bars L and M are secured and con-
nected by stops to the operating lever N. These contact bars

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may vary in design according to the lay-out of the winding
engine or hoist under consideration at the time, and the
existing connections to the throttle valve 0. In the
present case, as illustrated in the accompanying drawings,
the throttle lever N is shown in the “ off ” position, and is
there held by the contact P, and it is impossible to again
apply steam until this contact is released. This release is
obtained by throwing over the reverse lever, which is in
the same plane as the throttle lever N and mounted loose
on the same shaft. The reverse lever is coupled to the
short single lever R by the rod S and from the same fulcrum
as R, a double lever is fixed on the same shaft carrying
rollers mounted on gudgeons fixed in the outer ends of the
lever Q. Thus as the reverse lever is moved over, the
position of the double lever Q is altered, and the throttle
lever contact P is lifted clear, and the throttle lever N is
then clear for moving to the “ on ” position. By the same
movement the lower bar M is lowered into contact, and
when, due to the movement of the lever K, the moment
arrives for steam to be cut off, this is done by the contact
P on pull rod M. Thus at all times the throttle lever N is
always held secure at the end of each wind, until the
reverse lever is put in the proper direction for the next wind,
making it impossible to start the engine the wrong direc-
tion. (Four claims.)

7324 (1913) A Process for Manufacturing a Binding or
Covering Medium from Waste Sulphite Lyes. P. G. Muller,
of 82, Kaiserallee, Berlin-Friednau, Germany.—Has for its
object a process for the manufacture from waste sulphite
lyes or cellulose lyes of a substance adapted for use as a
binding medium varnish, paint or covering medium. This
product as a binding medium can be used for various
purposes. For instance, mixed with fibrous material, it
can be moulded and otherwise fashioned. It is well adapted
for the manufacture of coal briquettes. According to the
invention, the waste sulphite lyes or cellulose lye is appro-
priately inspissated, and then dissolved in carbonic disul-
phide (CS2). At first the two liquids exert a repellaut
action upon each other. It is only after long stirring that
they become intimately combined. It must be assumed
that the waste sulphite lye dissolves in the carbonic
disulphide. The dark colour of the waste sulphite lye
gradually becomes of a brown or grey colour during the
agitation. The mixture dries very speedily in the air,
especially in thin layers, and becomes hard and firm, so that
coal briquettes manufactured with this binding medium do
not require coking. Coal briquettes can also be pressed or
moulded in accordance with a known method, and then
immersed in the binding medium. Oil, resin, wax, paraffin,
camphor, pitch, or any other substance in a dissolved state
may be added to the carbon disulphide to be used, the said
substance being appropriate for making the briquettes more
resisting to atmospheric influences, and also more resisting
to disintegration in the fire. When the coal is mixed with
the binding medium then the briquette material is usually
warmed in order to thin the binding medium, and thus to
effect an easier mixing. As the carbon disulphide boils at
about 46 degs. to 47 degs. Cent., a portion of the carbon
disulphide will be vaporised. By adding substances of the
above kind the loss is compensated. Under certain condi-
tions, the carbon disulphide may be also used for mixing
intimately the sulphite lye with the above or other sub-
stances, which exert a repellant action upon the sulphite
lye to such an extent that a posterior separation of these
substances from the sulphite lye is no more possible, or is
very difficult, and then the carbon disulphide can be
removed. In this case the carbon disulphide would not

serve as a binding medium, but as a meiium of introduction^
(Four claims.)

10139 (1913). Improvements in or relating to Drilling and
Boring Apparatus W. G. Bambridge, 44, Morley-screet,
Kettering.—Relates principally to rock drills of the rotary
percussive type and particularly of that kind in which a
spring-controlled hammer is combined with the drill spindle
and is moved longitudinally thereon by means of a cam,
said hammer when released by the cam imparting under
the action of its spring a blow to a member on the spindle.
The invention comprehends an improved construction, and
comprises an apparatus wherein hammering means are
combined with a screw-threaded drill spindle which is
arranged to operate with a continuous rotary motion and
have imparted to it a constant feed forward by means of a
nut. Fig. 1 is a longitudinal section of a convenient form
of apparatus according to the invention ; fig. 2 is a trans-
verse section taken on the line a—b of fig. 1 and viewed
from the left thereof; fig. 3 is a side view; and fig. 4 is an
end view of a modified form of the nut. As the collar 13
rotates in company with the drill spindle, the rollers 23
engage the inclined sides 25 of the extensions 24 of the
block 11 and force back the latter compressing the spring 29



until the said rollers pass the apices 30 of the extensions 24,
whereupon the block is impelled forward by the spring
until the end 31 makes forcible contact with the end 32 of
the collar 13, which blow is transmitted through the
collar 13, washer 20, collar 16, nut 19, and spindle 1 to the
drill. This hammering action is repeated as the collar 13
rotates, so that the drill operates with a combined rotary
and percussive action. A compression spring 33 is located
between the collar 16 and the adjacent end of the case 10,
which spring yields to allow the collar to move forward
under the blow of the block 11, but afterwards reacts to
return the collar to its normal position preparatory to
receiving the next hammering blow. When it is desired to
put the hammering device out of action, the block 11 may
be fastened back by a suitable catch or equivalent device,
or the rear ends of the slots 28 may be extended laterally
at right angles like a bayonet slot, so that by turning the
block the rollers 27 may be brought into these laterally-
extending portions to hold the block back from the collar 13
out of action against the action of the spring 29. (Four
claims.)

16467 (1913). An Improved Miners3 Safety Lamp*
F. Faerber, of 3, Beurhausstrasse, Dortmund, Germany.
—Relates more particularly to that type of such lamps as
are provided with both an electric safety lamp and a
detector for firedamp. According to the invention, a hollow,
for instance, annular accumulator, is provided, within the
interior of which the detector for firedamp is located, and a
slot or opening is furnished in the accumulator and the
outer casing through which the detector for firedamp may
be inspected from the outside. In this way the detector for
firedamp is very securely protected from damage. More-
over, the safety lamp may be made of the usual shape and
size op. the outside without in any way impairing its effec-
tiveness. Fig. 1 is an elevation partly in section, and fig. 2
is a transverse section on the line A, B, fig. 1, a is an
accumulator, which is in the present case of annular shape
with a free space or recess b therein. In this space b is
located the indicator for firedamp in such a way that it is
protected on all sides by the lamp fitting or the accumulator.
(Two claims.)

16467 (1913).

17661 (1913).

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17661	(1913). Improvements in the Distillation of

Bituminous Matters. J. G. Aarts, Dongen, Holland.—
Relates to improvements in the method of distillation of
bituminous matters wherein the charge is caused to descend
in a continuous manner within a vertical retort and is
subjected to a fractional distillation by an exterior heating
of the upper portion of the retort, which heating gradually
increases to a point of maximum temperature. Owing to
the external heating of the upper portion of the retort, the
distillation products ascending from the zone of maximum
temperature of the charge are caused to aid the distillation
in the cooler upper zones, the ascending current and the
heated charge moving in opposite directions, that is on the

counter-flow principle. According to the invention the
charge is not packed so as to produce a dense and solid
structure, but is packed in such a manner that the density
thereof is a minimum at or near the centre of the charge
and a maximum at the outer peripheral portions of the
charge. Owing to this manner of packing the charge the
ascending distillation products are caused to converge
towards the centre of the charge so that the interior thereof
is subjected to the action of a heated secondary localised
current, which localised current is much more effective than
a current which is not localised and penetrates throughout
the whole charge. At the level of the maximum tempera-
ture the whole mass which passes through the maximum
temperature zone is distilled and coked. The further
descent of the charge takes place through the non-heated
lower portion of the retort, during which descent cleavage
lines are formed in the continuation of the vertical zone of
the least density of the charge undergoing distillation. The
carbonised mass is then further cooled by the fact that the
heat of the red-hot coke is utilised for producing steam in
known manner. This steam ascends within the carbonised
mass principally through the cleavage lines and is trans-
formed into hydrogen and carbonic acid gas, which latter
is reduced to oxide of carbon. These gases reach the zone
of maximum temperature, mix with the ascending and
converging currents of the gaseous products of distillation,
and expel or drive these products in a nascent state out of
their zone of formation into a zone of lower temperature
and lesser density; the inherent heat of the gases being
gradually given off to this zone. The accompanying
drawing diagrammatically illustrates a retort adapted for
carrying out the improved process. (Two claims.) ,

18099 (1913). Apparatus for Measuring the Inclination
of Boreholes and Making a Photographic Record thereof. H. M.
Smitt, of Bleyenburgkade 73, Utrecht, Netherlands. —-
Relates to a device for measuring the inclination of bore-
holes, more particularly for ascertaining the position in
space of boreholes used for the making of freezing shafts.
The apparatus consists of a tube of a somewhat smaller
diameter than that of the borehole to be controlled. This
tube is exactly centred by means of spring - controlled
rollers and forms the casing of the apparatus proper which
is introduced into the same and secured therein, care being
taken to close the apparatus in a thoroughly watertight
manner. The action of the apparatus is based on ascer-
taining the positions of the air bubble of a box level, in
Combination with a scale of degrees, which scale in all
circumstances retains the position once assumed. In case
of the inclination of the apparatus, the scale may also be
inclined, but it must not turn. This is effected by means of
a ring on which the scale is mounted, the said ring being
connected to an easily rotatable spindle arranged in the
longitudinal direction of the apparatus. This spindle is
provided with a ring within which is trunnioned a second



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ring carrying within it a small flywheel which can rapidly
rotate. The axis of the flywheel is at right-angles to that
of the trunnions of its carrying ring, and these trunnions
are at right-angles to the axis of the spindle which carries
the scale. It will be seen that this gyroscopic arrangement
in itself well known avoids the rotation of the scale-carrying
ring even when the apparatus itself is rotated. The above-
mentioned ring is arranged about a box level secured in the
apparatus, so that the photograph of the level obtained in
the manner in itself well known, shows at the same time the
scale division. The position in space of the borehole can be
ascertained from the pictures obtained during the lowering
of the apparatus to known depths, as will be subsequently
explained. The pictures of the box level with the scale
divisions illuminated in the well known manner by means
of electric lamps, are photographed on a film and after-
wards developed to a negative picture. Although the
recording of the position of the air bubble by photographic
methods on a film roller must be considered as being in
itself well known, the apparatus according to this invention
is constructed in such a manner as to ensure considerable
advantages even in this respect over the well-known
apparatus. Fig., 1 is a vertical section through the appa-
ratus ; fig. 2 a vertical section through the inner portion of
the apparatus on an enlarged scale ; fig. 3 an elevation of
the film arrangement; fig. 4 an elevation of a device for
regulating the unwinding of the film ; and fig. 5 shows one
of the pictures obtained. (Eight claims.)

23274 (1913). Improvements in and Pertaining to the
Utilisation of the Waste Heat of Caked Coke. C. Semmler,
20, Mainzerstrasse, Wiesbaden, Germany. — Relates to
improvements in and pertaining to the utilisation of the
waste heat of caked coke, by means of a cooling chamber of
the type that is adapted to receive the freshly-drawn charge
of coke and to be cooled by means of a heat conveyor, the
heat taken up by which can be utilised for power or heating
purposes. According to the invention the conveyor of heat,

(Continued on page 920.)