192

THE COLLIERY GUARDIAN

July 26, 1918.

away in the same manner from either side, a similar
arrangement of guide sheaves is provided on both sides
of the main frame. In a machine comprising undercutting
and overcutting mechanisms projecting laterally from the
machines as described, for example, in the Patent Appli-
cations Nos. 116128 and 116229 (see page 190), the range of
adjustment of the adjustable sheaves is such as to enable
the cable to be led from the winding drum to a sheave
on that mechanism which is situated at a different level
from that of the winding, drum. (Five claims.)

116231. Coal Mining Machines. R. J. Tugwood, 77,
Chancery-lane, London, W.C. (A communication from
the Jeffrey Manufacturing Company, Columbus, Ohio.)—
The present invention relates to improvements in that class
of machine which is adapted to work upon the longwall
system, and which comprises elongated cutting machanisms
of the chain cutter type. In mining according to the long-
wall system it is a common practice, in order to con-
serve the coal, to cause the cutter arm, when undercutting,
to operate in the fireclay underlying the vein of coal.
It is, of course, undesirable that these cuttings from the
clay should be mixed with the coal, and while most
of them are carried directly out of the kerf as they
are made by the cutting bits, a certain proportion of
these may remain behind and mix with the coal when
the vein is broken down. This invention provides means
adapted for following the chain cutting mechanism, the
function of such means being to engage the cuttings and
confine them to the path of the cutter bits on the travelling
chain in order to ensure their removal from the kerf.
The said means are advantageously employed in conjunc-
tion with a conveyor adapted to enter the kerf and remove
the coal as it is broken down, suitable breaking down
and conveying mechanism being described in Patent No.
116128 (see page 190), the said means and conveyor being
preferably fitted with devices which will enable them to
be attached to the'mining machine so as to project from
either side according to the direction of travel and the
side on which the kerf is to be cut. The means following
the chain cutter may comprise an apron fitted with a
scraper, the apron being capable of attachment to either
side of a conveyor, and the latter being fitted with a
side plate for confining the broken down coal to the space
above the conveyor, as will be hereinafter more particu-
larly described. (Seven claims.)

116393. Coke Ovens. R. Peel and T. F. Shevels, of
New Brancepeth Colliery, Durham.—This invention relates
to coke oven doors of the type in which a frame is perma-
nently fitted against the end of the oven so as to cover
the ends of the dividing walls, and provided with a web
extending from wall to wall, and having a door adapted
to be placed in a recess in the frame, and to be lifted out
of the frame when it is desired to open the door. In
doors of this type as hitherto constructed, the door flanges
of the frame adapted to receive the door have been exposed
to the atmosphere. In a door made in accordance with
this invention, the frame is provided with flanges adapted
to enclose the ends of the dividing walls of the furnace,
said frame or flanges having inwardly inclined reveals,
and the door is provided with inwardly inclined flanges
adapted to fit said reveals, and adapted to hold firebrick
lining, so that the flanges and reveals are sandwiched
between brickwork. The upper part of the frame is, or
may be, recessed, and is, or may be, provided with an
aperture adapted to be closed by a door pivoted to the
frame, or by a removable plug. The lower part of the
door forms a support to the oven door. (Two claims.)

116424. Breathing Devices. H. Wade, 111 and 112,
Hatton-garden, London, E.C. 1 (a communication from
Dragerwerk, Heinr. and Bernh. Drager, 53, Moislinger
Allee, Lubeck, Germany).—This invention relates to a
breathing device, more particularly for use by divers, of
the kind in which an electric fan is arranged in a box
or casing attached to the helmet of the diver, so as to
produce circulation of the breathing air between the casing
and the helmet, for the purpose of facilitating breathing
for the diver. Breathing apparatus of this kind has been
proposed, in which the vitiated air is caused to pass through
a chamber containing water into which a quantity of
sodium bioxide is caused to fall, whereby the oxygen
evolved replaces that used in respiration, and the soda
fixes or absorbs the carbonic acid which is present in the
vitiated air. According to this invention, the air is caused
to pass through a dry air purifying cartridge, and the
purified air has oxygen gas added to it if required. The
invention further provides for making breathing possible
through a mouthpiece with breathing valves to be used in
the event of the working of the electric fan being inter-
rupted or disturbed. (Four claims.)

The Entombed Miners.—There is now some prospect of
an early search being made in the workings of Arbuckle
No. 3 pit, Stanrigg Colliery, Airdrie, for the bodies of the
nineteen men entombed on the 9th inst. by an inundation of
moss and water. Since all hope was abandoned, energetic
measures have been in operation to remove the water and
moss from the Humph coal section—the upper seam of
the pit—and these efforts have been to a large extent
successful. On Saturday last it was ascertained that the
pumping and other means of draining off the water had
resulted in the shaft being cleared to the bottom of the
Humph seam; indeed, it was announced that the water
had receded considerably below that bottom. An effort is
also being made to get an entrance by the downcast air
shaft, which, however, is clogged with dried moss. This
has been removed to within a few feet of the Humph sec-
tion, and it is intended to put on the fans to cause a
current of air to circulate in the workings as soon as
the bottom is reached. Blackdamp is known to exist in
the workings, and that must be cleared before an entrance
is effected and a search made for the bodies of the en-
tombed men.

NEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

July 15 to 20 (inclusive).

[Note.—Applications arranged alphabetically under the
names of the applicants (communicators in parentheses).
A new number will be given on acceptance, which will
replace the application number.]

Aitken, R. Boiler house door. (11844)

Akt.-Ges. Brown, Boveri, et Cie. Induction electric motor
with variable number of poles. (11903)

American Linseed Company. Artificial fuel, and methods
of making same. (11741)

American Linseed Company. Apparatus for producing
artificial fuel, etc., from plastic or viscous material.
(11742)

Archbold, J. G. Automatic couplings for railway, etc.,
vehicles. (11668)

Bertrand, A., and Chkliar, I. Smoke-consuming apparatus.

(11579, 11658)

Cairns, A. Steam turbines. (11823)

Chopin, M. Apparatus for measuring chimney loss and
constituent elements of this loss. (11724)

Curie, J. A. Burners for liquid fuel. (11869)

Daniels, S. Compressed air engine. (11763)

Davies, L. J. Carbonisation of wood, etc. (11898)

Davies, W. E. Carbonisation of carbonaceous materials.

(11602)

Dempster and Sons, R. Distillation of coal. (11610)

(Dominion Tygard Engine Manufacturing Company.)
Engine. (11801)

Duquenne, C. Smoke-consuming apparatus. (11658)
Glass, W. Pumps. (11604)

Griesbach, H. S. Internal combustion engines. (11548)
Grundy, G. Device for heating cooler portion of water
in boilers. (11881)

Hailwood, E. A. Miners’ safety lamps. (11603)

Head, Wrighton and Company, Ringquist, J. M., and
Wrightson, T. G. Apparatus for charging blast
furnaces. (11728)

Hewins, H. Feed-water fittings for steam boilers, etc.
(11796)

Hunt, G. Couplings for mining trams, corves, etc.

(11769)

Hursthouse, L. F. Two-stroke cycle internal combustion
engines. (11894)

Kahn, E. C. Liquid fuel burners. (11633)

Lamplough, F. Converting heavier hydrocarbons into
lighter hydrocarbons. (11808)

Lord, J. E. C. Obtaining valuable products from blast
furnace pitch. (11745)

Maschinenfabrik Oerlikon. Steam or gas engines. (11696)
Motala Verkstads Nya Aktiebolag. Feeding devices for
pulverulent fuel. (11760)

Neil, J. Boiler furnace doors, etc. (11913)

Ore, E. Process for purification of coal gas and for
manufacture of iron salts used in same, etc. (11677)

Packard Motor Car Company. Hydrocarbon motors.
(11661)

Paddison, E. F. Internal combustion turbines or rotary
engines. (11590)

Reynolds, C. H. Internal combustion engines. (11806)
Sellar, W. Burners for liquid fuel. (11869)

Simpson, C. D. Range boilers. (11826)

Soames, A. Current regulators or transformers of the
constant current type. (11725)

Soc. de Moteurs a Gaz et d’lndustrie Mecanique. Con-
densers. (11905)

Toogood, H. J. Distillation of coal. (11610)

Topham, W. Furnaces. (11911)

Torazzi, M. F., Vickers Limited, and Webb, G. W. C.

Generator for producing and utilising mixed steam
' and products of combustion. (11729)

West, J., and Wild, W. Retorts for destructive distilla-
tion of coal, etc. (11738)

Wilde, A. H. Internal combustion engines. (11887)

Wilkinson, F. A. Internal combustion engines. (11680)

Complete Specifications Accepted.

(To be published on August 8.)

[Note.—The number following the application is that
which the specification will finally bear.]

1916.

15385. Riedel, A. Method for the production of ammo-
nium chloride during the working of blast
furnaces. (102146)

1917.

8175. Greaves, H. A., and Etchells, M. Manufacture of
steel. (117286)

9817. Merz and McLellan, Michie, A. C., and Weeks,
E. G. Use of solid fuel for large scale power
production. (117290)

9899. Schultz, E. J. A. Internal combustion engines.
(108158)

9960. Cooper, T. L. R. Electric motors. (117296)

9968. Soc. Anon. Ateliers Clerc et Quantin. Pumps.
(108310)

10224. Helps, G. Manufacture and treatirfent of coal or
like gas. (117308)

10407. Haeseler, C. H. Pneumatic percussive tools.
(117313)

10714. Chew, A. C. Slide rule. (117318)

11323. Nachenius, H. A. J. de B. Centrifugal pumps.
(117326)

11983. British Thomson-Houston Company (General Elec-
tric Company). Electric transforming and con-
verting apparatus. (117330)

12479. British Westinghouse Electric and Manufacturing
Company (Westinghouse Electric and Manu-
facturing Company). Phase converters for poly-
phase distributing systems. (117336)

135553. Bentley, G. H., and Appleby, E. G. Apparatus
for feeding fuel to gas generators or the like.
(117348)

14549. Walthew, J. G., and Williams, H. A. W. Internal
combustion engines. (117356)

14987. Fasey, W. R. Internal combustion engines.
(117361)

16095. Barstow, F. A., and Mairet, F. F. Caps for rock
drills and similar fluid-pressure-operated tools.
(117374)

16170. Stinchcombe, T. W. Fire-grates for furnaces, with
a view to facilitating the removal of ash.
(117375)

18927. Dawson, A. Feed-water filters. (117395)

1918.

578. Bentham, C., and Simon Limited, H. Floating
plant for loading small coal from barges into
ships. (117402)

3297. Rayner, G. H. T., and Rayner, P. Valve apparatus
for rock drills and like fluid-pressure-operated
tools. (117415)

3833. Haeseler, C. H. Means for controlling pneumatic
percussive tools. (117421)

4346. Akt.-Ges. Brown, Boverie, et Cie. Method and
apparatus for operating surface condensing plant
by means of steam jet air pumps. (117065)
Complete Specifications open to Public Inspection before
Acceptance.

[Note.—The number following the application is that
which the specification will finally bear.]

1918.

11507. Oesterreichische Siemens-Schuckertwerke. Haul-
ing or winding machinery. (117464)

Restoration of Lapsed Patent.

An Order has been made restoring the Letters Patent
granted to William Wilde and William Petrie for “ Im-
provements in corve retaining and releasing mechanism
specially applicable to mine cages and the like,” No. 20241
of 1907.

GOVERNMENT PUBLICATIONS.

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

Colonial Reports—Annual : (No. 960) “ Bermuda—Re-
port for 1916, price l|d. (London : Published by His
Majesty’s Stationery Office).

PUBLICATIONS RECEIVED.

“ Industrial Possibilities of the Forth Estuary,” by H. M.
Cadell, of Grange, B.Sc., V.D., D.L. : Reprinted with
slight alterations from the Scottish Geographical Maga-
zine, May and June 1918; “ Prospectus of University
Courses in the Municipal College of Technology, Man-
chester, Session 1918-19 ” ; “ Income Tax and Super Tax,
1842-1919—Tabular View and Reminders and Advice”
(published by Messrs. Oliver and Boyd, Tweeddale-
court, Edinburg), price Is. net; “Cheap Steam—with
which is incorporated Cheap Transport ” (Vol. 2, No. 4),
July, 1918 (published by Ed. Bennis and Company
Limited, 28, Victoria-street, S.W. 1) ; “ Journal of the
Royal Statistical Society ” (Vol. 81, Part III.), May
1918 (London : Royal Statistical Society, 9, Adelphi-
terrace, W.C. 2), price 5s. ; “ Proceedings of the South
Wales Institute of Engineers ” (Vol. 34, No. 2), issued
July 19, 1918 (published by the Institute, Park-place,
. Cardiff), price 10s. ; “ The Journal of Industrial and
Engineering Chemistry ” (Vol. 10, No. 7), July 1, 1918;
“Industrial Management—The Engineering Magazine”
(Vol. 56, No. 1), July 1918, price 25 cents; “Com-
pressed Air Magazine” (Vol. 23, No. 6), June 1918,
single copies 10 cents; “ The Journal of the Chemical,
Metallurgical and Mining Society of South Africa”
(Vol. 18, No. 2), May 1918, single copies 3s. ; “Journal
of the American Waterworks Association (Vol. 5, No. 2),
June 1918; “University of Illinois Bulletin, No. 103
—“ An Investigation of Twist Drills,” by Bruce W.
Benedict and W. Penn Lukens, price 60 cents ; United
States Bureau of Mines—Department of the Interior
(Technical Paper 193) “ Quarry Accidents in the
United States during the Calendar Year 1916,” com-
piled by Albert H. Fay; (Technical Paper 202) “ Metal
Mine Accidents in the United States during the Calendar
Year 1916,” compiled by Albert H. Fay; “Monthly
Statement of Coal Mine Fatalities in the United States,
February 1918: List of Permissible Explosives, Lamps
and Motors tested prior to March 31, 1918,” compiled
by Albert H. Fay.

CONTRACTS OPEN FOR COAL AND COKE.

Kinsale, July 31.—100 tons of coal, delivered at work-
house. Forms from the clerk.

CATALOGUES AND PRICE LISTS RECEIVED.

Edgar Allen and Company Limited (Imperial! Steel
Works, Sheffield).—Two leaflets, in which coloured letter-
ing is used to advantage, deal with Allen’s (K 9) oil-
hardening tool steel and Allen’s Red Label crucible steel.
These steels are of particular interest at the present time,
especially to munition factories, as well as to most tool-
makers and users. Red Label steel is a tungsten alloy
crucible steel, the increasing demand for which is evidence
of its successful use. It ensures great accuracy in tools.
The K 9 steel is a standardised oil-hardened steel which
can be hardened and tempered to any extent without the
tool being affected. It yields tools of the highest possible
accuracy. Useful particulars of manufacture and treatment
are briefly stated.

Just published. Royal 8vo. 850 pages, with 150 Illustrations. Price j03 3s. net.

A PRACTICAL TREATISE by

Capt. E. de W. S. COLVER, Dr. Met., F.C.S., &c.,

Attached Ministry of Munitions of War; Superintendent of Research at a National Shell Filling .
Factory; formerly Research Demonstrator in the University of Sheffield.

A Record of all available information regarding the manufacture, properties and uses of
High Explosives, with details of the processes and plant involved, and a short description
of the sources and recovery of the raw materials required.

Complete Prospectus on Application.

London: CROSBY LOCKWOOD & SON, 7, Stationers’ Hall Court, E.C. 4.

D. Llcwellin Evans,

PROPRIETOR OF THE

Cardiff Brattice

Cloth Company,

120, BUTE ST..

CARDIFF.

AGENT FOR

Nobel's Ezulosives,