394

THE COLLIERY GUARDIAN.

August 20, 1915.

coloured, for example, red. Conversely, when a suffocating
gas is present, for example, carbon dioxide, a decrease of
pressure is produced in the space 4, which sucks up the liquid
so that again the rays of light from the lamp are coloured.
(Six claims.)

25301 (1913). Improvements in Ropes or Cables. A.
Erbe, of Alsterdamm 16/19, Hamburg, Germany. — The
object is the production of a wire rope or cable consisting of
a hemp core and a number of non-circular strands. The
cores of these strands are
composed of circular wires
and specially shaped wires
(called profile wires) laid or
twisted round one another,
and the shape of their cross
section is a trapezoid or
trapezoid-like figure. Fig. 1 QdL^Py>

shows a rope with strands RAPScp oE&rAxO
having 7-wire trapezoidal
cores; fig. 2 a trapezoidal
core with four circular wires
and three profile wires;

fig. 3 a trapezoidal core

with five circular wires and ^MJcP
two profile wires; fig. 4 a

7-wire circular strand. The	r_____

trapezoidal stranded cable \JA/	CPD	\ JJ /

is specially suitable for use	'O~C/	0-0	\><y

in mines, and is particu- 2^—7
larly adapted, on account of	EElff.s.

the great flexibility in con-
junction with the large cross section of the core, for use as
heavy hauling cables, in which the core occupies a relativelv
greater portion of the total cross section than in lighter
cables (about 25 per cent, as against about 10 per cent.) if
the carrying wires of the strands are not taken thicker than
3 mm., as is the usual and proper practice. (One claim.)

25701 (1913). Device for Discovering Fractures in Wire
Cables. R.Wahn, Vienna II, Zirkusgasse 47, Austria.—
Relates more particularly to devices of the type in which a
member is arranged to enclose strands of the cable and has
enclosing opening thereof provided with projections between
any adjacent two of which a single strand is adapted to
be enclosed, so that when the device is in operation and the
cable and enclosing member are moved relatively one to the
other in a direction longitudinally of the cable the enclosing
member will engage the broken portion or portions of the
strand or strands when the operation can be stopped and the

/n &

J

X 7/

[tai
ta





position of the break ascertained. The present invention con-
sists in a device wherein a frame adapted to be rotated upon
the cable when the arrangement is in operation is provided
with numbers corresponding to each of the strands under
examination, whereby the particular strand in which a
fracture has occurred can be ascertained at once and the
exact number of fractures in any single strand also
ascertained. Fig. 1 is a cross sectional view of the device ;
fig. 2 being a longitudinal section thereof; fig. 3 is a front
elevation of a modification; and fig. 4 is a side elevation
thereof partly in section. (Three claims.)

NEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

11436. Furnace bars. F. Prestwich.

11451. Colliery and like winding drums or rollers. W. V.
Dewhurst.

11477. Automatically controlling pumping machinery. C.

B.	Newton.

11479. Method of preparing explosive charges by means of
liquid air. W. Weber.

11485 and 11486. Process for the production of ammonia.

C.	T. Thorssell.

11514. Manufacture of explosives. J. Longman.

11549. Apparatus for boring and drilling earth. J. Taylor.

11564. Power-driven rock drills. M. Kellow.

11571. Control of the highest explosives. H. Walter.

11572. Explosive. H. Walter.

11588. Water purifier, oil remover, and circulator for steam
generators and the like. Pomeroy’s Moa Water
Softener Syndicate Limited, and J. Pomeroy.

11590. Apparatus for conveying granular material, such as
grain, cement, and the like, by pneumatic means.
W. Cramp and J. Frith.

11595. Boiler construction. D. D. Shierk.

11636. Production of gas from coal. S. Phillips.

11646 Steam superheaters. R. J. Mills.

11666. Separation of solids from liquids and apparatus
therefor. W. Russell.

11676. Grabs. D. J. Barnard.

11692. Machine for bending angle iron, tee iron, and flat
iron bars into hoops, rings, or the like. W.
Scott.

11703. Fire tube boilers. G. W. Matthews.

11767. Piston rings. Lancaster and Tonge Limited, and
J. Butterworth.

11780. Steam condensers. Contraflo Condenser and Kinetic
Air Pump Company Limited, and C. F. Higgins.

Complete Specifications Accepted.

(To be published on September 2.)

1914.

3572. Process for refining cracked mineral oils, such as
cracked petroleum. Justice. (Allgemeine Ges.
fur Chemische Industrie.)

4526. Telephones, particularly for use in collieries and the
like. Dootson.

13935. Retorts for carbonisation of coal or the like. Duckham.

15355. Detonating fuse. Harle.

16122. Valve control mechanism for fluid pressure engines
and pumps. Bring.

16191. Dumping receptacles. Fried. Krupp Akt.-Ges.

16213. Rotary drilling or boring apparatus. McNamara.

16228. Rotary engines, pumps, and the like. Heinrich.

16290. Valve gear for mixed pressure turbines. Ziegler.

16472. Erection of gas holders with disc-shaped closing
members. Maschinenfabrik-Augsburg-Niirnberg.

16517. Closures for loading and like hoppers. Zublin.

16860. Protective arrangements for electric installations.
Siemens-Schuckertwerke Ges.

16981. Tar separators. Berlin-Anhaltische Maschinenbau
Akt.-Ges.

17145. Method of burning cement, ores, and the like
materials. Marks. (G. Polysius, firm of.)

17180. Lever-operated locking and closing devices of
the casings of tar separator plunger bells.
Berlin-Alhaltische Maschinenbau Akt.-Ges.

17384. Power hammers. Weber.

17548. Arrangements for regulating the working of electric
hauling or winding machinery. Siemens-
Schuckertwerke Ges.

17678. Method of operating gas producers, with withdrawal
of the slag in a liquid state, and apparatus there-
for. Koppers.

17833. Skip or bucket trolleys. Marks. (J. Pohlig Akt.-
Ges.)

17891. Reciprocating steam engines. Schmid.

18432. Grinding or crushing machines. Fasting.

18442. Electro-magnetic unlocking and unscrewing apparatus
for miners’ lamps. Oldham.

18490. Production of light oils from carbonaceous substances.
Roll a son.

18495. Means for measuring and regulating temperature
differences. Wilson and Packard.

18576. Process for the distillation of carbonaceous material
and apparatus therefor. Hills and Thom.

19299. Rock drills. Robertson and Jackson.

19790. Couplings for chains, rods, and other 'articles.
Porter.

21028. Fluid pressure engines. Fessenden.

21650. Composite conductor cables and method of making
the same. Marks. (Aluminium Company of
America.

22003. Operation of steam turbines. Bergmann-
Elektricitats Werke Akt.-Ges.

22190. Machine for hauling, lifting, and other analogous
purposes. O’Brien.

22362. Process for softening water. Oelwerke Stern-
Sonneborn Akt.-Ges.

23165. Method of carrying and condensing the volatile gases
distilled from carbonaceous material. Prioleau
and Prioleau.

23371. Steam actuating and distributing valves for direct-
'acting pumps. G. and J. Weir, Limited, Weir
and Petermoller.

23546. Vessels, and method of unloading cargo therefrom.
Reid.

1915.

177. Valve arrangements of reciprocating engines.
Schmidt.

118. Distributing valve arrangement for steam driven
pumps. Oddie.

1287. Water tube boilers. Schmidt.

1424. Petroleum distillation for the production of low-
boiling-point hydrocarbons. Clark.

1865. Pumps. Howl and Grainger.

4264. Condensers or coolers for use in gas manufacture.
Climie and Lees.

5026. Conveyor chains. Baker.

5740. Rope railways. Thunhart.

6109. Gas holders. Maschinenfabrik Augsburg-Nurnberg.

6164. Method of lubricating engines. Soc. Anon, des
Etablissements Delaunay-Belleville.

Complete Specifications Open to Public Inspection Before
Acceptance.

1915.

10150. Slide valves for steam pumps. Yamamoto.

THE ACQUISITION OF ENEMY PATENT RIGHTS.

The following list of British Patents, which have been
granted in. favour of residents of Germany, Austria, or
Hungary, is furnished in view of the new Patents Acts,
which empower the Board of Trade to confer upon British
subjects, the right to manufacture under enemy patents,
which right, when acquired, can be retained after the war,
and is specially compiled for the Colliery Guardian by Lewis
Wm.. Goold, chartered patent agent, 5, Corporation-street,
Birmingham. It is desirable in the first instance to obtain
the latest particulars upon the Patents Register. If any
patent listed has been assigned to a non-enemy proprietor,
the law does not apply.

26170/05. Treating ores. In a process for the balling
together of dusty or pulverulent ores, the ores
are treated in a rotary furnace with a pointed
gas flame. The gas is supplied to the flame
under pressure, so that the shape of the flame
may be varied, and the flame made oxidising or
reducing as desired. The ores are heated to at
least 1,000 degs. Cent., and iron ores are heated
either without any addition at all, or with such
small quantities of added matter as will cause
fusion to take place at a temperature not below
1,000 degs. Cent. The shape of the flame
enables the heat zone at the rear end of the
furnace to be limited, so that the material under

treatment shall not become soft too soon, and
adhere to the sides of the furnace. J. E.
Goldschmid, Germany (dated January 12,
1905).

27152/05. Dynamo-electric machines; field magnets. A field
magnet or other core is built up of three layers
of plates, the central layer of which consists of
sheet iron stampings varnished or provided with
paper insertions, the two outer layers beimz con-
stituted by tinned iron stampings, which are
fused together by heating, so that solid end
plates are produced which can be easily
machined without splitting. F. Porsche and L.
Lohner, Austria.

17534/06. Preserving wood, etc. Solutions of the metallic
salts of strong mineral acids, such as sulphates
of copper, iron, or aluminium, which are used
for impregnating wood and other fibrous
material, are mixed with salts of hydrofluoric
acid to prevent the production of free sulphuric
acid. The hydrofluoric acid which is liberated
acts as an antiseptic. K. H. Wolman, Ger-
many.

17781/06. Miners’ safety lamps. The reservoir is attached
to the lower ring by a bayonet joint arrange-
ment. The reservoir has a collar and two pairs
of lugs, forming two slots; a ring forming part
of the lower ring has an inwardly projecting
flange for engagement below the lugs, suitable
gaps being provided in the flange to allow the
lugs to pass through. The attachment is
secured by a magnetically released catch, which
engages the slots, as in usual constructions. The
following up ring is made up of two rings con-
nected by short bars covered with wire gauze,
through which the air supply enters. This ring
is attached to the lower ring by a bayonet joint
arrangement. The upper ring has a vertical
flange, which projects through the opening in
the lower ring, and has lateral pins; notches
are made in the lower ring to allow the pins to
pass through. After rotation, these pins are
locked by a spring catch. P. Wolf, Germany.

18817/06. Dynamo-electric machines; dynamos and motors,
alternating currents; dynamos, regulating;
field magnets; sparking, preventing. Alter-
nating current commutating machines are pro-
vided with windings for compensating for
armature reaction and transformer electromotive
force, which windings may be combined into
one, which may also excite the main fields.
Machines so compensated may be run as
asynchronous generators, of which the frequency
may be varied independently of the speed by
means of a small synchronous exciting
generator, the speed of which is gradually
increased, and are thus adapted for starting and
regulating motors, and for exciting asynchro-
nous generators. A. Scherbius, Germany.

19215/06. Explosives. The density of fusible explosives,
such as trinitrotoluol, picric acid, and nitro-
naphthalene, is increased by subjecting the
molten substance, during solidification, to the
pressure of air or other suitable gas. The
molten explosive is poured into a cardboard case,
or into a projectile, which is placed in a
cylinder connected by a flexible pipe and cocks,
with an exhaust pipe, and pressure pipe, and by
a cock with the atmosphere. The vessel is
first connected to the exhaust pipe for the
removal of all air bubbles from the liquid, and
is then connected to the pressure pipe, and sub-
jected to a pressure of two or three atmospheres.
The density may be still further increased by
* rapidly cooling the liquid, either by a water
jacket or by placing the moulds in cold water.
A series of vessels may be simultaneously
employed. C. E. Bichel, Germany.

Copies of any of the above specifications can be
supplied at the price of 15. post free.

GOVERNMENT PUBLICATIONS.

*** Any of the following publications may be obtained
on application at this office at the price named post free.

Prohibitions of Export in Force in the United Kingdom
and Certain Allied and Neutral Countries, 3|d.

Boiler Explosion Report : (No. 2366), Water Tube at
Chelmsford, 5|d.

Consular and Trade Reports : East India Trade, 1909-10
to 1913-14, Is. lid.; Siam, Chiengmai (No. 5446), 2£d.;
Siam, Senggora (No. 5447), 2d.; Netherlands, Surinam
(5456), l|d.; France, Corsica (5457), Id.; Sierra Leone,
1914, 4d.; Persia, Trade of Arabistan, 2Jd.

Statutory Rules and Orders : (No. 668), Customs (Expor-
tation to Italy), l|d.; (No. 713), Customs, July 28, re
Exportation (Consolidated Order), l|d.; (No. 747), Customs,
re Exportation Restrictions, l|d.; (No. 715), Defence of the
Realm Amending Consolidated Order, l|d.

Defence of the Realm Acts and Regulations Passed and
Made to July 31, 1915; edited by Alexander Pulling, C.B.,
Is. 2d.

PUBLICATIONS RECEIVED.

Monthly Statement of Coal Mine Fatalities in the United
States, April 1915,” compiled by A. H. Fay (United
States Bureau of Mines); ‘‘Transactions of the North-
East Coast Institution of Engineers and Shipbuilders ”
(Vol. 31, Part 4), July, price 5s.; ‘‘Bulletin of the
American Institute of Mining Engineers ” (No. 104),
August; ‘‘Bulletin et Comptes Rendus Mensuels de la
Societe de 1’Industrie Min^rale,” April-June 1915; ‘‘The
Journal of the Franklin Institute ” (Vol. 180, No. 2),
August, price 50c.; ‘‘Transactions of the Mining Insti-
tute of Scotland” (Vol. 37, Part 6); ‘‘Wind Stresses in
the Steel Frames of Office Buildings,” by W. M. Wilson
and G. A. Maney (Bulletin 80 of the University of Illinois),
price 50c.; ‘‘The Mining Magazine” (Vol. 13, No. 2),
August, price Is.; “ The Journal of the Chemical, Metal-
lurgical, and Mining Society of South Africa ” (Vol. 15,
No. 11), June, price 3s.