616

THE COLLIERY GUARDIAN.

Mabch 20, 1913.

ABSTRACTS OF PATE1T SPECIFICATIONS

RECENTLY ACCEPTED.

the permeable wall of the box, which may be of asbestos, for the same direction is utilised in respect of another feature
example, permits of endosmose in allowing the combustible ' of the invention. This consists in arranging that the motor
gases to pass readily in separating them from the air, the is coupled with the conveyor by simply passing the free
result of which is to render the apparatus highly sensitive,' end of an actuating lever through a slot, eye or the like in
because in these conditions the amount of toxic gases will 1 the piston rod. Provided that the swing of the conveyor is
become considerable in the apparatus, while they are still
highly rarefied in the ambient atmosphere. Fig. 1 repre-
sents an indicator measurer constituted by two bulbs united
by a U tube; fig. 2 shows an annunciator of the same type;
fig. 3 is a vertical section of anjannunciator without bulbs.

(Three claims.)

3837 (1912). A New or Improved Mode of and Means or
Apparatus for Extracting Water or Other Liqzuds from Coal.
C. Burnett, of Belmont House, Durham.—In this invention
the water or liquid is in part extracted by conveying the
material passes into a mill c, through a shaking sieve d and coal uPwards along an inolined draina8e band °r tbe
into a distributing devices, by which the powdered material ;like- the °°al bein«	completely dried by

is introduced in regular quantities into a rapidly flowing ; PassinS between dryin^ roller8> after which said coal may

969 (1912.) Improvements in and relating to the Treatment
of Lignite. T. Rigby, of Station Hotel, Dumfries, and N.
Testrup, 6, Broad-street-place, London, E.C.—This invention
has for its object to provide an improved method and means
for the treatment applicable more particularly in the drying
preparatory to conversion into briquette fuel. The invention
consists broadly in effecting removal of moisture from
lignite by pulverising the material, and introducing it in
this condition into a stream of hot inert gases by which it
is subjected to drying, and conveyed to the desired locality
—for instance, to Schulze driers, in which the material is
then further dried. The accompanying diagrammatic
drawing shows one way in which the invention may be
carried into effect. In the figure, t is a conveyor band con-
ducting moist lignite to a disintegrator b from which the

\3

stream of hot waste products of combustion passing through
the flue f from the boiler furnace a of the installation, of
which the briquetting plant forms part. The material
carried by this stream of gases passes the fan g and enters
the vertical flue h, the valve u of which is, under these

circumstances, closed. The gases and suspended powder j
pass by the side branch flue to a set of cyclone separating i
devices j, the separated powder entering the hopper k of a
steam-heated Schulze dried I and the gases passing by the |
flue m, provided with the branch n, to the exit end of the i
Schulze drier where the more completely dried powder is I
once more dried, and after passing through a double clapper ’
device (not shown) by a distributing device v introduced •
into the stream of gases and carried thereby through the !
duct s to the second series of separators o above the bunker j
p, which is in connection with the briquetting press w. The '
gases now leave by the duct q which, together with the
exit flue gases from the drier, enters the tower r, wherein the
gases are scrubbed to recover the residual dust not separated
by the cyclones. (Four claims.)

3628 (1912). Improved Apparatus for Indicating the
Presence and Quantity of Toxic or Inflammable Gases in the
Atmosphere. A. Guasco, of 172, Faubourg St. Denis, Paris,
France.—In accordance with this invention, two closed I
bulbs or chambers are arranged within an insulating case or |

box provided with a porous wall, which permits of endos-
mose, and consequently maintains these bulbs or chambers
at the same temperature and in perfect equilibrium in the
absence of combustible gases, whatever the thermometric
variations in the surrounding atmosphere may be, the said

porous wall allowing any toxic or inflammable gases in the
air to pass therethrough, and consequently to upset the
position of equilibrium in the two chambers. One of the
closed air bulbs is made of glass or bare metal, while the
other carries some fragments of a catalytic metal or alloy.
The two air bulbs are connected together by means of a
U-shaped tube, the branches of which have a similar



s

internal volume, so that the two columns of air are evenly
balanced. The apparatus, according to the present invention
may be constructed so as to act simply as an annunciator^
In order that these apparatus may act efficiently and in order
to render them highly sensitive, it is absolutely indispensable
that the two bulbs or receptacles of any kind which consti-
tute the two air reservoirs should be completely insulated
from the outer air, in order that the variations of the
ambient temperature may not exert any influence upon one
or other of the two bulbs ; contrary to what is the case with
all differential apparatus, the main function of the appa-
ratus is not to experience any influence from variations of
any kind in the external temperature, but to act only under
the influence of the heat produced by the platinum brought
into contact with the combustible gases. It is therefore
necessary to insulate the air bulbs from the atmosphere,
and with this object they are enclosed in a box, one wall of
which is permeable, in such a manner that they are always
located in the same medium—that is to say, exactly at the

same temperature, which cannot be obtained when these begins its forward stroke under full pressure. The fact

bulbs are freely exposed to the atmosphere. Furthermore, that all the coupled parts are always subjected to strain in

be precipitated upon or led to a conveyor by which it is
carried to the disintegrator or displaced to any other desired
position. The drainage belt is advantageously composed of
pivoted plates in order to make a flexible belt of great
strength, and the free liquid from the wet coal being con-
veyed along this belt runs down same into a suitable tank,
thereby draining the coal previous to its being dried between
| the pressure rollers. A convenient embodiment of the
; invention is illustrated in fig. 1. In this arrangement the
| liquid passing from the drainage belt is led to a settling

tank f from which any coal may again be elevated to the
hopper by means of a suitable elevator. A further arrange-
ment is illustrated in fig. 2. In this arrangement the
hinged plates hy advantageously constituting the drainage
belt h, and which are suitably pivoted together to render

2

belt flexible, may each be curved in such a manner that

when the belt is passing around the drum by which it is
carried, the plates h1 are concentric with the periphery of
the drum, forming an even peripheral surface, which thus
provides for an efficient compression of the material. (Nine
claims.)

4377 (1912). Improved Process for the Manufacture of
Briquettes from Coal Waste. E. Efrem, of 22, Schoneberger-
Ufer, Berlin, and O. Efrem, of 25, Tempelhofer-Ufer, Berlin.
—This invention relates to the manufacture cf briquettes
from the dust and waste produced in the mining of coal.
This invention consists in a briquetting process which is
carried out in two stages, during each of which the ingre-
dients are at different temperatures. In carrying the
invention into effect asphalt powder, which is rich in
bitumen, is added to coaldust issuing from the dryer at a
temperature of about 90 degs. Cent. Thereupon the mixture
is cooled down to about 40 degs. Cent, to 50 degs. Cent. At
this temperature an ingredient containing hydrocarbons is
added, it being dissolved without developing easily inflam-
mable vapours. The pressing is carried out in such
manner that as much of the air as possible contained in the
mixture is expelled. It has been found satisfactory to add
to the low-grade coal, poor in bitumen, from 3 to 20 per cent,
of asphalt, and from 2 to 12 per cent, of naphthalene.
(Three claims.)

19696 (1912). Improvements in Motors for Operating
Reciprocating Conveyors. A. Eickhoff, 21, Kaiserring*
Bochum, Westphalia, Germany.—This invention primarily
consists in arranging that in each cycle of its operation the
motor executes only one working-stroke, in the forward
direction, whereas at the back-stroke the piston is moved
by the instrumentality of the conveyor, after the cylinder
has been opened. During the back-stroke the piston
compresses that part of the fluid which remains in the
cylinder, and thus forms a cushion. In this manner the
coupled parts are always subjected to stresses in the same
direction, and violent impacts are prevented. The invention
also provides means whereby the reversal of the motion of
the conveyor is effected very suddenly in order to obtain the
best efficiency of the conveyor. To this end the supply of
pressure-fluid to the cylinder is caused to begin while the
compression referred to is still going on. Consequently the
piston is already under the full pressure of the fluid, on
reaching the end of its return stroke, so that it immediately

Provided that the swing of the conveyor is
properly adjusted to suit the stroke of the motor, no knocks
or blows take place within said slot, since only one contact
face is required to operate said lever. In addition, this
mode of transmitting the power of the motor to the conveyor
offers the advantage that the actuation of the conveyor by
the motor can be regulated, to suit local conditions, by
simply shifting the motor laterally so as to alter the adjust-
ment of the actuating lever in the slot. The invention also
comprises an arrangement for actuating the conveyor by







means of a cross-head on the piston, and rods extending
from said cross-head along the sides of the piston to another
cross-head, to which the actuating lever is pivoted. When
the conveyor and its load are raised by the motor, and then
allowed to drop by gravity, the speed necessary for shooting
forward the material in the conveyor is attained earlier
with a large angle of inclination than with a smaller angle.
Accordingly, the piston stroke may be longer when the
angle of inclination is small, and may be shortened in
proportion as the angle of inclination increases. When the
latter attains a certain value it may even suffice to make
the piston execute its strokes in quick succession, somewhat
in the manner of machine tools operated by compressed air,
to produce a shaking or vibrating motion of the conveyor.
The present invention accordingly also provides means
whereby the stroke of the piston can be regulated, from
outside the cylinder, even while the motor is at work.
Fig. 1 is a longitudinal section of the motor; fig. 2 is a
section taken on the line A—B of fig. 1; fig. 3 is a diagram
illustrating the working of the motor; fig. 4 is a plan view
of the motor in connection with the conveyor, drawn to a
smaller scale. (Seven claims.)

4933 (1912). An Improvement in Miners’ Electric Lamps,
C. H. Worsnop, of Saville Park-road, Halifax.—This
invention relates to a new method of making miners'electric
lamps, but more particularly that part of the lamp that
contains the electric bulb, and consists of a glass cylinder
fixed in an improved frame with a lens forming the top or
bottom or front as the case may require, so that the lamp
may be used as a search-light as well as giving a light all
round. Fig. 1 shows how the improvement is used in the
case of an electric hand lamp; fig. 2 shows how used on a
miner's lamp, where the light is required, on the top of the
lamp (in this case the lamp not only gives a light all round,
but also lights the roof of the mine); fig. 3 shows how this
system may be placed under the lamp (in this case the lamp

may be suspended from the roof of the mine; the light in
this case will not only illuminate all round, but a strong
light will be focussed on the floor). The improved frame
holding the lens and cylinder together, and consisting of
the bars b and the carrier d, may be either screwed or
welded together and fixed to the case a with screwed nuts,
or have the ends of the rods b riveted inside the case a.
The reflector r is made in such a shape as to both focus the
light and spread it round the side. (One claim.)

20365 (1912). Improvements in Haulage Shackles for
Colliery and other Wagons and the like. W. Williams, of
102, Gwendoline-street, Treherbert, Glamorgan. — This
invention relates to haulage shackles for colliery and other
wagons or the like in which a lip or projection formed on
the extremity of the shackle pin is passed through a recess
in the shackle eye and turned to engage with a nitch in the