Радо 8
THE CHINA MAIL, THURSDAY, APRIL 22, 1948.
T
QUALITY FITTING.
by GIBBONS
GILMAN & COMPANY LTD.
ENGINEERING DEPARTMENT
Telephone 31146
FAIRMONT ALUMINUM CO.
Fairmont, West Virginia, USA,
BRIGHT FLAT SHEETS AND CIRCLES
FLAT SHEET STRIP FINISH
COILED SHEETS & COILED SHEET CIRCLES
Any Tempers: Soft to Full Hard.
YU TUNG TAI LTD.
Engineering Department
Exclusive Agents
For Hongkong & S. China.
Overall dimensions:
43" wide x 25" deep x
Model SC. 152
68444" high
Internal dimensions: 374" wide x 10%" deep x 42" high
Net capacity 18 cuble feet.
External panels of steel bon- dorised, finished with durable white synthetic, enamel Wälded construction. throughout.
The interiors consist of one-piece heavy gauge' steel linors finished In white porcelain, enamel, with rounded corners and acidrostat- ing bases.
218, Queen's Ballding.' Tel. 33145
ENGINEERING PAGE
NEW
Britain is leading the world
of
אנו !!1
in its development. unbine engine to drive warships, Britain's Royal Navy is already
MARINE
ERA IN PROPULSION
а
The first afloat with a craft hurricane force and blowingfren, In a sinal mutor-gunboat- powered by a gas turbine and is
Through a tunnel,
M.G.B. 2000-powered with it acts as pushing ahead, with its varlos Jet. The wind is produced by gas turbine in which the | phases of development, New ex uning quid fuel in tir, the was provided by mechanism de
periments belog carried out un-air being forced into the box by signed primarily for aircraft. der all conditions suggest the power derived from the windmill. probability that this is the on-for turbine itself,
fall sorts of tests and it was not Juntil the beginning of February your that the trials coalty came to an end.
this
Britain's Admiralty, and indus- trial experts are still examining the Gatric unit installed in the gunboat which, on is first trials, completed 55 hours running at (in the Solent). In the tog of a new era in marine pro- In producing the Jet in this Thus by making use of acro-course of those trials some 3,000 prusion,
way a great deal of heat
the red-hot combustion chamber. contentu of was able to establish a lend in Kenerated and the
The British Ministry of Sig y has already made available
to the Admiralty all infarination gained in the development of jet
• Aircraft Bras hithertu}
solely on jet propulsion |
for alreraft are Byw operat- ing and may soon open "marine whags"
Establishing A Lead
Бел
Farnsworth
ALL WAVE BAND SPREAD RADIOS.
MODEL GT-669-WAZ
advanced receiver offers Is engine research, the Royal Navy tons of salt air was pumped into
By Vernon Brown
It was expected that the sali deposits would fout the blades of the compressor which combus. Forces the air into the
tion chamber with a lowering of power output, In Inst, the power loss was less than expect- ed and when the engine
was opened up there was
Balt than had been anticipated. Her marine engines the jet Is
the first naval vessel ever to be directed against turbine vanes
Suitable metals have now been propelled by a gas turbine. It is These preliminary trials were which trust the prere to the found appropriate for work in hard to overestimate the value regarded on most satisfactory ship's propelier in The oncital:
experience with and Britain claimed to have won The Royal Navy's gas turbina en-of practical way,
the Rines.
nical difficulties.
Air and marine jet muts work the box, therefore, must be able, the application of this form of on shilar principles except that In sland up to very high tem- machinery afloat, for this was
allow
peratures.
"Ironmongery"
The craft was subjected to
.
lesa
The New Unit
fla applient|on to the Royal Ray would mean ships with ex technicians were able to put to
In September last year, naval for which it is designed element the first round against the tech- remiest cruising riztige, (mize weight for armour and the j-lumination of boilers muy meon, eventually, more space fur the kew type weapons,
c
bas
french 301
Constitution Of Coal
The fact that Britain crapped several ubsujete wornout battleships should Blind one to the fact that in the Ad creation of a new Royal Navy, specially telapted to: This page with its peeular pro il mes, Britain is steadily forging atent. The cost of the duersary
arch work runs late several | füre, were
pounds and is being pu
establishments Through
But the country.
was
Important
The Admiralty is also planning
The contest between the en- gineer and the difficulties in- herent in this application, how- ever, has not yet ended. There is still much to be done, M.G.B. 2000 is now being fitted with a new, slightly modifed gas tur- bine unit which will soon begin discoveries which nearly constant optical properties Its sea trials. This new unit characteristic of true coke, but will run continuously for many may have a distinct bearing on methods of coal usage in the fu- entirely different from graphite. hundreds of hours to ascertain
referred to by Dr.Charcoal produced by forest fires its total useful life at sea. summer has proved to be Clarence A. Seyler. of the British lost
(No. 9) with or larger gas turbine machinery Coal Unlisation Research Asso- either fusinile cuation, in a recent Paper on "The without some of the other com- for installation in a vessel of the Chief problem with the
Past and Future of the Contribution of Petrulo The ponents, as low as No. 6. Reac- Escort type-about 1,400 tons. this project the machinery turine development
pretive wood charcoal made at 600 in
becn designed for marine perfection of metals for the air sented to the South Wales In-deg. C. consisted entirely of No. has
charcoal from a purposes from the initial stage empression chamber, ten the stitute of Engineers. The Paper G. Ordinary simplest words, the marine gas outlined the results of investiga-burnt tree trunk was No. D. and it is prophealed turbine might be described as ations made since the author read When heated to about 1,100 deg. durability and efficiency will be box In which
windtill Ists last Paper to the Insitute in C. It was found to be converted greater than the first unit,
x-coke. blown round by artifleman 1937, the work being done partly į Into x-
ENTI
There are, of course, other wind. The wind
projects. Thesa include the powering
Ras turbine machinery of H. M .5. Goose," a gunboat of about 250 M. G. B. 2000. This boat was quite famous during World War I. She was commended by by Licut. Peter Scott, R.N.V.R., M.B.E., D.S.C. She'led an "E-bont Killer" flotilla
series of In a dashing actions against enemy shipping.
with
that
*Grey
is more than in the author's laboratory In According to the author, much the dis- Swansea and partly in the labor remains to be done, as lories of the B.C.U.R.A. in Lon-coveries, unexpected as they are of- dun, since the petrological de- cannot fail to have Important partment was formed under the feets both upon our idea of the wrller's direction in 1943, The past history of coal, and its fu- considerably larger than
the ture utilisation, whether by com- appended notes suminurise
bustion or carbonisation. un points of the Paper.
Quantitative Analysis
Britain Evolves New Stainless Steel
London, Apr. 17. A meny statuless and corrosion-
that www-fing sterl
is msily machinable in east form is now.
Experiments
In Street
Lighting
There is little doubt that the development of the
gas turuine will influence considerably the shape of warships
That is the reason why Britain is proceeding with these impor tant experiments as speedily as porsible,
In the words of Vice-Admiral
All conts can now be quantita- tively analysed into aine rum- ponents derived from woody tissue, the mala mother substance of coat. These can be identified and, numbered according to their optical properties by simple Juan produced in a North Eng-microscope technique. The com- ponents form a series of steps land foundry,
Wrought stainless steels giving values of
which change suddenly at certain the carbon. This Is satisfactory cutting results have contrary to the general accepted long been in use, but tus evolu-i
that coal is formed by a There have been no major ad- Denys Ford, Engineer-in-Chief of theory tion of "free cutting" casting
constant
of process
gradual pressing almost identicu 1} constant
of street the Fleet: "We cannot tell where qualities is claimed to represent change. All metamorphic changesvances in the theory
lighting during the past year, this new development is going regional an- new-arhievement in
coal, whether British thracitisation, as in South-Wales, reports the "GEC Journal, but to lead us, but it may well start metallurgy.
The foundry is David Brown or contact metamorphism by in some experiments have been made a new era at sea."
the use of low-pressure Foundries Company of Penistone).trusive volcanic rocks, as in cer-
Lain coals of North Britain, or the fluorescent lamps which have cer- changes known as fusination, ie,tain advantages for this purpose. The colour of the light is gond, "mineral from bright con! to
the use of
of large Jamps (moliver
coal, and called now
(which naturally results in large hy the amo nine steps. low-brightness lanterns) tends to Under certain conditions, ic.. In reduce glare. Sumatran lignite the meta-
PRESTCOLD
SERVICE CABINETS
ICE-MAKER AND COOLING UNIT.— Six ice trays giving 12 lb. of ice per freezing,
CRISPATOR-Acrispator" drawer of porcelain enamelled steel for the storage of salads, etc., is suspended on runners on the lower shelf.
DRIP TRAY. A large drip of porcelain enamelled steel is provided. This can be used also for the storage of fish, etc.
Agents:
FAR EAST ASSOCIATED MERCHANTS LTD.
Distributors:
REISS, BRADLEY & CO., LTD.
National City Bank of N. T. Building, Hongkong. Telt #28000/7.
Queen's Rd., Co
of
"into")
proceed
found to
pass
must, how-
These advantages morphin by intrusive volcanic ever, be weighed against the high rocks has been
cost of equipment. It is possible through a bituminous stage justified for the spectacular in-
this extra expense may b in that which it has strong swelling and stallations appropriate to the cen coking properties, the meta- morphism being as normal as re-tre of London glonal anthracitisation.
and other big tewas, which can he designed for
All forms of carbonisation at use with fluorescent lamps. atmospheric pressure, whether in
The lighting of secondary and
Pulse
Technique
In Radar
In spite of the spectacular new applications of pulse the semi-coke retort (Coalite), residential roads by fluorescent technique for radio navigation gus-retort от coke-oven,
pass lamins is also being studied. through the same nine steps with On rather more orthodox lines, and the location of obstructions, ivercasing temperature. Beyond there are two now lanterns of there must always remain the a certain point, which may be as interest for side lighting. One is demand for a means of locating low as 0.000 deg. C. with certain for use with 40-watt or 00-watt a source of electromagnetic) coals, the semi-coke
sodium vapour discharge lamps, radiation and that is why through the stage of fusinite (No. while the second is a new type fourth edition has been prepared 9), out of the coal series, and be of directional lantern to take 200-of "Wireless Direction Finding" carnes what the author calls watt Osram lamps or 80-watt or by R. Keen (published at 458, alpha-coke (x-eoke), which has 125-watt Osram BPMV lamps.
for. "Wireless World" by Itte
passes
CARTER & SUTTON
INDUSTRIAL AND COMFORT
Air Conditioning
Engineers.
230A HONG KONG &
●SHANGHAI ́BANK BLDG.
Telephone 28304.
Enlighten Your Night With
inionile-
a
& Sons, Ltd. of London).
Opportunity has been taken to include much resently released material in particular, systems of navigation using the hyperbolle geldin',
New matter includes sections dealing with the design. and at ing of high-frequency radio- goniomoters; ΟΠ transmlesian- | fine theory as applied to Adcock aerial systems; and on the cause of reduction' of resonance effects in Adcock acriols and feeders, Now sections on calibration have been added-to-the-ship; and: niz... craft chapters,
of
has
The statistical treatment H.F-bearing classification been included, together with notes on the organisation et a notwork of HF. direction-find. ing. stations with particular re. ference to their use for non-co- operativo direction-finding-that i is, the location of unidentified transmitters.
The contention. that the Mound, in Edinburgh, was now |· recognized, as a car park has aroused opposition from some pouncillors, who contand that | this well-known centro In
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FIVE WAVE BANDS FROM 535 to 1605 K.C. and 3.0 to
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•