606

THE COLLIERY GUARDIAN

March 22, 1918.

upstanding flange or ring 4; the whole being enclosed
within the usual outer case or shield 5, which in some
cases may be screwed upon the outside of the ring 4. The
protector 2 is provided with air holes 6 near its lower end,
and within its interior, below said air holes, is secured a
ring 7 having a turned-in flange 8 at its upper end form-
ing a seating, on to which the extinguisher sleeve 1 is
adapted to fall, as shown in fig. 2. At the upper end of
the said sleeve 1, and exterior to it, is an air cut-off valve
9 supported upon the fusible plug 10, passed through a
hole in a pin or stem 11, carried upon a base or bearer 12,
resting upon the top of the gauze chimney 13. The sleeve
1 is suspended from the valve 9 by means of a loose internal
ring 14 engaging beneath the inturned upper edge 15 of
the sleeve, and carrying upright guide pieces 16 passing
freely through slots 17 in the valve, and having their
upper ends bent over. A spring 18 is interposed between
the valve 9 and the perforated top 3 of the protector 2, for
the purpose of giving a sharp descent to the extinguisher
when the plug fuses. -When this happens, the sleeve 1
falls on to the seating 8 within the protector 2, and at
the same time the valve 9 falls on to the inturned flange

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or seating 15 at the upper end of the sleeve 1, as shown in
fig. 2, thus entirely closing the ventilation and extinguish-
ing the flame. To facilitate the fitting of a new fusible
plug, the pin or stem 11 is provided with a head 19, which
can pass through the hole in the valve 9, but which is nor-
mally engaged by a spring catch device 20 (which may be
a continuation of the spring 18) constituted by two spring
arms between which that portion of the pin immediately
below the head is embraced. By exerting pressure on the
head 19 it can be forced past the spring catch, and thus
the stem 11 detached from the valve, when a new plug
can be easily inserted. It is then pushed back into place,
so that the head forces apart the spring arms, which snap
behind the said head. (Eight claims.)

112514. Fuel Briquettes from Combustible Waste Pro-
ducts. 0. A. Tollefsen, Skillebaek No. 1, Christiania,
Norway.—This invention relates to a process for the pro-
duction of fuel briquettes of the kind wherein combustible
waste products, such as waste paper, tanning bark, fir and
pine cones, foliage, splinters, etc., reduced to small pieces,
are softened in water, a binder, such as resin, flour paste,
or glue, being added to the mass, which is then pressed
into briquettes. The binder, in the form of resin-glue or
waste flour (sweepings) diluted in water of 60 degs. Cent.,
is first added to the softened main constituent of the mass,
for instance, waste paper, whereupon the other combustible
waste products are successively worked into the mass so
as to produce a paste which is briquetted in the well-known
manner. A briquette composed of the following substances
in about the porportions stated have been found to give
good results in practice, namely : Paper waste, 60 per
cent. ; sawdust, 20 per cent. ; tanning bark, fir and pine
cones and splinters, 15 per cent. ; binder, 5 per cent.—total,
100 per cent. The paper waste, which is shredded or torn
into small pieces, is first softened in water, and placed in
a suitable tank or vessel, and the binder, diluted in water
of 60 degs. Cent., is then added thereto. The sawdust,
tanning bark, fir and pine cones and splinters, previously
softened in water, are then successively added to the mass
in the tank or vessel, and stirred or otherwise worked into
the same until the whole mass is reduced to a paste suit-
able for forming the briquettes in moulds in the usual
manner. The briquetting is preferably effected in a
briquetting press under high pressure, and after the press-
ing process the briquettes are placed in a drying room. The
briquettes produced in this manner glow like coke. Accord-
ing to analyses made at the Investigating Institute of
Christiania, the following calorific capacities were found :
Briquettes of paper, cutter chipe, and sawdust, 3,890
calories; briquettes of paper alone, 3,795 calories.
Briquettes of the three first-mentioned products, with the
addition of bark, flour sweepings, fruit rinds, matches,
haulm, cork, linoleum, foliage, and peat, had a calorific
capacity of 2,392, 2,671, and 3,000 calories respectively.
(Two claims.)

£24,000 Wagon Demurrage Claim.—The Court of Session
has decided a point relating to the dispute between James
Nimmo and Company Limited and the North British Rail-
way Company for £23,961 for demurrage on wagons and
siding rent alleged to have been incurred by the coal-
masters to the railway company during six years, 1909-
1914. Reference was made to the distinction between
what are known north of the Tweed as “ thirled ” and
“ free ” wagons. All the wagons are the railway com-
pany’s but those “ thirled ” are reserved exclusive - for
the trade of the one customer, and bear that customer’s
name, while the free wagons are in general use. The
present litigants entered into such an agreement in 1888.
Under it the railway company took over from defendants
1,100 wagons at the price of £45,000. The Scotch Court
has held that the dispute is not under the agreement of
1888, but under the Act of 1892, and that it falls to the
settlement by the Railway Commissioners as arbitrators.

MEW PATENTS CONNECTED WITH THE
COAL AND IRON TRADES.

Applications for Patents.

March 11 to 16 (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. J

Akt.-Ges. Brown, Boveri, et Cie. Operating surface con-
densing-plant by steam-jet air pumps. (4346).

Avery, W. and T., Fraser and Chalmers, Mitchell, F. G.
and Parnail, 1. St. J. B. Transporter weighing
cranes. (4663)

Bahnsen, S. P. Instruments for measuring and recording
tonnage taken on board and discharged from ships.
(4263)

Bateman, F. Internal-combustion engines. (4231)

Beilby, G. T. Carbonisation of coal, shale, peat, wood,
etc. (4287)

Bell Bros, and Kirby, M. R. Coal-he wing machines, etc.
(4678)

Bingham, C. Apparatus for heating air blast for iron
and steel furnaces. (4385)

Blyth, M. W. Means for purifying benzol, etc. (4237)
Bolton, C. H. Mine props. (4502)

Bouillon, C. Treating peat. (4622)

British Thomson-Houston Companv. Elastic-fluid tur-
bines. (4619)

Broadley, J. R. Machines for grinding ores, minerals,
stones, etc. (4303)

Brooke, R. M. Horizontal and inclined retort settings.

(4504)

Brown. A. M. Two-cvcle internal-combustion engines.

(4265)

Calvert, G. Production of ammonia.' (4351)

Cochrane, W. Internal-combustion engines. (4685)

Cohen, A. Internal-combustion engines. (4577)

Constantinesco, G. Pumps. (4674)

Contrafio Condenser and Kinetic Air Pump Company, ami
Gull, A. E. Centrifugal and turbine pumps, blowers,
etc. (4624)

Dempster and Sons, R. Heating horizontal retorts for
gas production. (4203)

Dempster and Sons, R. Horizontal and inclined retort
settings. (4504)

Derihon, E. Internal-combustion engines. (4399)

Desoutter, C. Pressure-fluid-operated drills, etc. (4607)
Dobson, I). R.. and Pickard, W. Gas-producers. (4588)
Dobson, D. R., and Pickard, W. Internal-combustion
engines. (4590)

Dobson. D. R.. and Pickard, W. Internal-combustion
turbines. (4591)

Easton. R. W. Retorts, coke-ovens, etc. (4525)

Elder, W. Rotary pumps or compressors. (4323)

Elder, AV. Rotary engines. (4324)

Evans, C. Water-tube boilers. (4657)

Evans, J. Internal-combustion engines, etc. (4558)

Forbes, D. and W. C. Combined derrick and transporter.

(4228)

Foulis, W. Internal-combustion turbine engine. (4615)

Gleave, F.. and Stubley, J. R. Water-circulators for
economisers. (4400)

Graham, M. T. Internal-combustion engines. (4429)

Harris, G. E. Internal-combustion engines. (4292)

Harvey, L. C., and Morgan Crucible Company. Crucible
melting-furnaces. (4682)

Haslam, A., Morris Limited. H., and Pearson, V.

Machinery for operating grabs. 4495)

Hopkins, C. T. Manufacture of composition fuel. (4249.

4626)

Howe, J. G. Method of obtaining motive power. (4394)
Howitt, H. G. Internal-combustion engines, etc. (4558)
Hurrell, G. C. Combustion chambers for liquid fuel.

(4208)

Igranic Electric Company (Cutler-Hammer Manufacturing
Companv). Controllers for alternating-current motors.
(4553)

Igranic Electric Company (Cutler-Hammer Manufacturing
Company). Electric motor controllers. (4640)

Industrie-en Miinhouw-Maatschapnii Titan. Smelting
titaniferous iron material. (4633)

Tngall, C. H. Internal-combustion engines. (4520, 4660)
Kettle. L. J. Measuring-apparatus for coal. ore. etc.

(4209)

Kirby. M. R. Coal-hewing machines, etc. (4678)

Knapp, I. E.. and Taylor. G. G. Process of producing
ammonia and ammonium compounds. (4455)

Lester. A., and Wagg. A. R. Water-tube boilers. (4469)

Levi, H. Refractory substances. (4204)

Miles, T. V. Means for puri'fving benzol, etc. (4237)
Miller. E. H. Combustion of solid fuel in boiler, etc..

furnaces. (4259)

Moores. J. Pumps. (4653)

Petrie, W.. and Wilde. W. Corve retaining and releasing
mechanism for collieries, etc. (4413)

Potter. E. W. Two-cvcle internal-combustion engines.

(4265)

Prichard, W. J. Internal-combustion engines, etc. (4558)
Rees. E. S. G. Centrifugal pumns. condensers, etc.

(4528)

Restucci. G. Devices for superheating steam. (4370)

Ross, W. Centrifugal pumps. (4537)

Rushton, A. Mine nrons. (4502)

Samuelson. F. Elastic-fluid turbines. (4619)

Sims, A. G. Machines for cutting, crushing, etc., coke,
coal, etc. (4266)

Skinner, C. E. Internal-combustion engines or turbines.

(4414)

Smith, P., and Varley, A. P. Centrifugal pumps or
blowers. (4666)

Tilstone, A. and T. Fuel-economiser or heat-regulator for
ovens, kilns, chimneys, etc. (4493)

Toogood. H. J. Heating horizontal retorts for gas pro-
duction. (4203)

Turner, D. E. Internal-combustion engines. (4256)

Usines G., Derihon Soc. Anon. Internal-combustion
engines. (4399)

Vincent. G.. and Williams. H. Motive power plant.

(4563)

(Wells, J.) Production and treatment of gas. (4673)

Wilcox, H. Internal-combustion engines or turbines.

(4414)

Complete Specifications Accepted.

(To be 'published on April 4.)

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

1916.

11574. Riedel, A. Method for preventing the choking-up
of gas plant. (101219)

17398. Darzens, G. A. Process for the separation of
cresols. (107961)

1917.

2995. Augustine, B. F. Internal-combustion engine.
(113808)

3224. Burge, H. O. Motor-driven cranes or hoists.
(113821)

3248. Dragerwerk. H. and B. Drager. Pressure-reducing
valves. (104683)

3255. Coles, G. J. Automatic couplings for railway and
like vehicles. (113822)

3426. Insull, M. J. Electric furnaces. (113839)

3576. Robinson and Son, T., Robinson, C. J., and
Stevenson, T. J. Dust collectors. (113846)

3962. Wollaston, T. R. Gas generators. (113,856)

4029. Browne, P. Hooks for haulage purposes. (113858)

4686. Hilger Limited, A., and Merton, T. R. Radiation
pyrometers. (113865)

9014. Bibby, J. Electric transformers, especially suit-
able for use in connection with electric furnaces.
(113899)

10681. Mascart, C. Transporting and elevating apparatus.
(108674)

17627. Compagnie Generale d’Electricite. Steam turbines.
(113942)

19288. Skinner, J. C. Heating-system for gaseous fuels.
(113945)

Complete Specifications Open to Public Inspection Before
Acceptance,

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

1917.

14977. Akt.-Ges. Brown, Boveri, et Che. Apparatus for
governing centrifugal compressors. (113950)

15201. Pierron, M. Method for the recovery of the coat-
ring from articles made of tin-plate, etc. (113951)

1918.

2236. International Curtis Marine Turbine Company.
Elastic fluid turbines. (113956)

2538. Desgouttes, P. Explosion motor. (113961)

GOVERNMENT PUBLICATIONS.

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

Ministry of Reconstruction—Committee on Relations
between Employers and Employed :■—“ Second Report
on Joint Standing Industrial Councils,” price l^d.;
“ Supplementary Report on Works Committees,” price
l£d.; Colonial Reports—Annual:—(No. 955) “ Nyasa-
land—Report for 1916-1917,” price l^d. (London : pub-
lished by His Majesty’s Stationery Office).

PUBLICATIONS RECEIVED.

Proceedings of the Engineers' Society of Western Penn-
sylvania ” (Vol. 33, No. 8), November 1917, price 50c.
a number; “The Journal of the Chemical, Metallur-
gical and Mining Society of South Africa ” (Vol. 18,
No. 7), January 1918, single copies 3s. net; “ The Jour-
nal of the South African Institution of Engineers ”
(Vol. 16, No. 7), February 1918, price 2s.; The Institu-
tion of Mechanical Engineers :—“ The Employment of
Women in Munition Factories,” by Miss O. E. Monk-
house, M.B.E., B.A. (Loud.); “Bulletin of the
American Institute of Mining Engineers ” (No. 135),
March 1918; also Supplement with Officers, Members,
Rules, etc.; United States Bureau of Mines—Depart-
ment of the Interior—“ Monthly Statement of Coal-mine
Fatalities in the United States, October, 1917—List of
Permissible Explosives, Lamps and Motors, Tested Prior
to November 30, 1917,” compiled by Albert H. Fay.

CATALOGUES AND PRICE LISTS RECEIVED.

Davis Furnace Company (Diamond Foundry, Luton).—
An illustrated leaflet describes the Davis twTin-chamber,
high-speed steel furnaces for town gas, fitted with Davis
patent air blast burner. These furnaces are constructed of
best quality fireclay tiles, suitably mounted within a
strongly constructed cast-iron frame, mounted on cast-iron
legs. Any kind of flame, ranging from reducing to
oxidising, can be obtained.

W. G. Walker and Company (Emery Hill-street, West-
minster).—The Walker fan brake (patent) is illustrated
and described in a clearly printed booklet, in order to
indicate the mode of measuring the brake horse-power
of electric and petrol motors. The power is spent in
revolving the vanes in air after the manner of a ventilating
speed. Two plates, 17 in. by 8^ in., as used on the 60
horse-power size, will absorb nearly 60 horse-power at
1,000 revolutions per minute. The prices range from
£5 10s. to £35.

Sir W. G. Armstrong, Whitworth and Company Limited
(Openshaw, Manchester).—Printed plainly and unmistak-
ably in red and black, and divided moreover into sections,
the instructions for forging and hardening the famous
“ A. W.” and “ A. W. P.” brands of high-speed steel are
clear enough to prevent the slightest error. The instruc-
tions are set out on a well-varnished surface, with stout
linen backing (reinforced with brass edgings), for hanging
on a wall, and they will withstand a good deal of wear
and tear—another instance of the thoroughness with
which the business is conducted. The series of approxi-
mate colours of steel heats, as seen by daylight, is a feature
of great interest.

Exports and Imports of Coal Products.—The exports
of coal products, not dyes, in February amounted to
304 cwt., valued at £5,195, compared with 22 cwt., valued
at £208, a year ago.

Imports Of Pitwood.—The imports of pitwood in
February amounted to 57,606 loads, valued at £179.443.
compared with 83,677 loads, valued at £264.568, a year
ago In February 1916 the imports aggregated 146.867
loads, valued at £439.883.