756

THE COLLIERY GUARDIAN.

April 3, 1914

arresters to grip the conducting rods and to beheld thereto,
the cage being free to descend to a very slight extent when
a shoe, wedge, or suitable part carried by the cage acts upon
the arresters and, by the whole weight of the cage and
contents, causes the appliances to exert such a powerful and
irresistible grip upon the conducting rods that the cage- is
brought to a standstill almost simultaneously with the
breakage of the rope or chains, and the cage is securely held
gripped to the conducting rods. An important feature
consists in the provision of means whereby the usual amount
of slack in the rope or chains, which always occurs at
intervals in the normal working cf the cage, causes no effect
upon the gripping devices or arresters, which then do not
act upon the conducting rods, but are only brought into
action by the actual failure in the haulage means causing
the cage to descend much more than it would do in
actual safe working by slack in the rope. Thus there is no
liability of the safety appliances gripping the conducting
rods unless in case of actual necessity, preventing liability
of injury to such rods. Fig. 1 is a face view of the gripping
appliance out of action; fig. 2 is an end view thereof; and
fig. 3 shows the appliances applied to a winding cage, out
of action, and the controlling means for the device. (Six
claims.)

5906 (1913). Improvements in and relating to the Utilisa-
tion of Steam in Steam Turbines and other Engines The
Hon. Sir C. A. Parsons, K.C.B.,of Heaton Works, Newcastle-
on-Tyne, Noithumberland. The object is to enable corrosive
action to be avoided. The invention consists in rendering
the steam before admission to the turbine or other engine
substantially chemically inactive as regards the metal parts
of said turbine or engine. The invention also consists in a
strainer through which the steam passes before entering the
turbine or other engine, the steam in passing through said
strainer coming into contact with metals similar to or not

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less active than those of the turbine or engine parts, so
that the corrosive action of the steam is expended in the
strainer. Fig. 1 is a sectional front elevation through a
strainer, according to the invention; fig. 2 is a sectional
side elevation at right angles to fig. 1 ; fig. 4 is a
view of one of the plates c seen from below; fig. 5 is an
enlarged sectional view of one of the groups of perforated
plates and baffles ; fig. 6 is a plan of fig. 5. (Three claims.)

12686 (1913). Improvements in Rock or Coal Drilling
Apparatus. J. E. Brown, 74, Psalter-lane, Sheffield.—Relates
to rock and coal drilling apparatus operated by hand,
having for its object to provide an improved and simplified
construction of the mechanism which operates the divided
or two-part nut connected with the feed action of such
drilling apparatus. It consists in opening and closing the

divided nut by a short longitudinal movement of a double-
pronged wedge, each prong having inclined ribs which slide
within grooves made in the side faces of the nut. Fig. 1 is
a section nut; fig. 2 an end view; and fig. [3 an elevation
with parts shown in section. (Two claims,)

14241 (1913). Improvements in Gas-inlet Nozzles for Coke
Ovens. H. Gossler, 58, Crangerstrasse, Herne, Westphalia,
Germany.—The crude gas used for heating coke ovens is
generally mixed with tar, with the result that particles of
tar tend to rapidly clog the gas nczzles. The object of this
invention is to provide improved means for preventing the
clogging referred to. The invention utilises the fact that
the specific weight of the particles of tar carried by the gas
is greater than that of the gas particles. By causing a
current of gas to pass through a nozzle which is arranged
in a gas-supply conduit coaxial therewith and the discharge
orifice of which is smaller in diameter than the bore of the
nozzle, and by tapering the bore of the nozzle towards such
discharge orifice gas pockets are caused to be formed inside
the nozzle. These gas pockets are due to the fact that the
main current of gas takes a direct path from the inlet end
of the nc zzle to the discharge orifice, so that a stationary
pocket of gas is formed between this current of gas and the
wall of the nozzle, and acts as an insulator for the particles
of tar in the main gas current passing in a straight line to
the nozzle orifice. Although the gas pocket is constantly

renewed, owing to the eddy current produced, the momentum
of the tar particles is sufficient to cause them to be unaffected
by these eddy currents, and they consequently do not touch
the wall of the nozzle bore. In order to prevent the
particles of tar from clogging up the discharge orifice itself,
the latter is provided with a sharp edge. The edge of the
nozzle orifice is, therefore, such that no surface is opposed
to the direction of movement of the current of gas against
which the diverted particles of tar could strike and lodge

in the discharge orifice of the jet. Fig. 1 is a longitudinal
section of a gas nozzle constructed according to the inven-
tion, and showing the stream lines of the gas passing
therethrough. Fig. 2 is a similar view of a modified form
of nozzle for gas containing large quantities of tar. Fig. 3
is a longitudinal section of the lower part of a regenerator
coke-oven burner, provided with a nozzle constructed
according to the invention. (Three claims.)

15411 (1913). Improvements in Boxes for Holding Accumu-
lators and Battery Cells. C. H. Worsnop, Savile Park-road,
Halifax.—Relates to an improved case to hold electric
accumulators and battery cells, but more particularly those
accumulators that are made of metal and use hydroxide of
potassium for the electrolyte instead of acid. In the first
place, the cells are held by the edge of the tank, which is
much stronger than the centre ; and in the case of the sides
of the box, the supports are movable to allow for any varia-
tion of the cells. This is attained by making dove-tail

grooves on the sides and bottom of the box, into which is
slid a bevelled block of non-conducting material with a
tongue projecting. The bevelled block projects from the
box sufficiently to hold the cells away from the bottom and
sides of the box, and the projecting tongue prevents the
cells touching each other. Fig. 1 is a sectional elevation,
and fig. 2 a perspective view of a corner of the box. (One
claim.)

16822 (1913). An Improved Apparatus for the Purpose of
Artificial Respiration. R. H. Davis, of 187, Westminster
Bridge-road, London, and E. Allday, of Great Western
Works, Sydenham-road, Birmingham, Warwickshire.—
Relates to that class of apparatus for the resuscitation of
persons asphyxiated by sewer or other irrespirable gas, or
otherwise, in which bellows are employed to suck or exhaust
foul air from the patients* lungs and to supply oxygen
thereto, the foul air being discharged into the atmosphere.
The apparatus comprises a pair of bellows, arranged
parallel, or side by side, and adapted to be operated by a
handle common to both, and each of which has in commu-
nication with it a box one of which comprises two compart-
ments, whilst the other has a single compartment only.

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One of the compartments of the double box is in connection
with an oxygen cylinder or the like, the connection being
provided with a back pressure valve, whilst the other com-
partment is in communication with an appliance or instru-
ment designed to be applied to the mouth and nose of the
patient, a valve being arranged on the inside of the latter
compartment to close communication between the two
compartments when the bellows are being inflated. The
box in connection with the other bellows, which is designed
to effect the suction of the foul gases from the lungs of the
patient, comprises one compartment only, and this compart-
ment is connected to the appliance or instrument applied to
the mouth and nostrils of the patient, a valve being fitted

in the connecting nozzle, and the end of the box opposite to
that connected with the face appliance being formed with
an opening which is furnished with an outlet valve. Further-
more, this box is provided with a tray or inclined bottom
for collecting condensed moisture and also with means for
permitting the condensed moisture, to escape. In practice
the apparatus operates as follows—that is to say. the
instrument is applied to the mouth and nostrils of the
patient and the handle is then manipulated so as to work
the bellows. One of the bellows on the upward or intake,
stroke sucks the poisonous gas from the lungs of the
patient, while the other bellows at the same time draws in
oxygen from the oxygen cylinder or other source of supply.
On the return stroke the gas drawn from the patient's
lungs is expelled from the first-named bellows, through the
box in connection therewith, into the atmosphere whilst
the other bellows forces the oxygen with which it has been
charged into the lungs of the patient. The reciprocating
motion of the apparatus is continued as long as may be
found necessary or desirable. For convenience in transit
the apparatus is fitted into a box or cabinet so constructed
that the apparatus may be worked without being removed
therefrom, although it may be removed if desired. The
bellows may be worked either manually or by power, as, for
example, by an electric motor. Fig. 1 is a sectional eleva-
tion of the apparatus. Fig. 2 is a plan of the apparatus but
without the mask. (Four claims.) *

17010 (1913). Improvements in or relating to Nozzles or
Mouthpieces for . Apparatus for Washing Coal and other
Minerals. P. Habets, of Montegnee, Belgium, and A. France,
of rue de I’Esperance 233, Liege, Belgium.—Relates to
improvements in apparatus for washing coal or other
minerals or the like of the kind in which the separation of
denser and lighter particles is effected by water streams or
currents of different velocities. In such apparatus the
discharge orifices for the schist and other refuse are some-
times provided with valves by which the outlet area of each
discharge orifice can be regulated. It is found in practice
that if the known means for regulating the discharge orifice
be set so that the horizontal section of the orifice is large
enough to allow for the passage of the longest bodies which
are to be separated out, then the area of the outlet orifice
will be such that an excessive consumption of water will
result. The object is to reduce the area of the discharge
orifice sufficiently to reduce the consumption of water to a
minimum, while at the same time maintaining a cross-
sectional form which will permit of the escape of schist or
other foreign bodies of the greatest length which are to be
separated out, and which may tend to arrange themselves
lengthwise across the orifice. Moreover, there must be no
projections likely to obstruct the passage of the schist.
With these objects in view the invention consists in
providing the outlet of a washer of the kind referred to
with an adjustable sluice or like regulator, which in any of
its positions of adjustment will maintain the form of the
orifice approximately uniform, and so as to maintain the
continuity of the contour or form of the discharge passage,
whatever may be the geometrical cross-section adopted for

the outlet, the upper service of the sluice or gate being
sloped, or such as to offer practically a minimum resistance
to the passage of the schist and to prevent lodgment of the
schist. A further object is to facilitate the regulation of
the outlet or discharge orifice to suit different sizes of schist
or other material to be discharged, so that, for instance, an
unskilled attendant can quickly and accurately set the
apparatus. With this latter object in view the invention
consists in forming a sluice or gate "with a number of
passages of definite areas, the arrangement being such that
any of the passages can be readily brought into register
with the discharge orifice so as definitely to regulate the
effective area of the same. The passages are of such form
that when brought into register with the discharge orifices,
they maintain approximately the contour of the interior of
the same. Figs. 1 and 2 are respectively a sectional eleva-
tion and a plan of one form of gate or valve; figs. 3 and 4
are a sectional elevation and plan of a second form, and in
which a plurality of passages is provided; figs. 5 and 6 are
a sectional elevation and plan of a further form; fig. 7
illustrates a number of valves similar to that shown in
fig. 5, applied to a plurality of outlet orifices arranged close
together; fig. 8 is a sectional elevation illustrating another
mode of mounting a valve of a form similar to that shown
in figs. 5 and 6. (Five claims.)

25367 (1913). Improvements in or Relating to Conveyors
for Use in Coalmines and other Places. J. Bowman, of Rose-
field, Gardenside, ITddingston, Lanarkshire, and J. Jackson,
of 4, Brackley Villas, Little Hulton, Bolton, Lancashire.—
Primarily refers to providing a single plough which will;
discharge the material from the conveyor at the same point ,
of delivery, in whichever direction the conveyor is travel-
ling. The invention further refers to constructions of such
ploughs and of the bridge or portion of the conveyor at the
point of delivery. The invention is particularly applicable
to that type of conveyor consisting of a stationary trough
and a carrier movable backwards and forwards within the
trough and consisting of a plate or plates extending nearly
the width of the trough, but not the full length thereof,
and sliding on the base of the said trough upon bearers
either fixed to the carrier plate or plates or fixed to the
trough, and the invention has reference as aforesaid to the
construction of a section of the trough comprising the
bridge at which the material is discharged, and to the con-