Page t
"PHILORA”
THE CHINA MAIL, THURSDAY, DECEMBER 30, 1948.
WHEN BUYING FLUORESCENT TUBES
INSIST ON
PHILIPS "PHILORA” the Long Life Tubes!
Four Jatt information.
please apply without obligation from:
MANNERS ENGINEERING LIMITED.
Mercantile Bank Building.
Tel: 34174.
316 sizes
ENDLESS V-BELTS
CAN $1
Replaced with only 4 sizes of Veelink
As many as 316 sizes of Industrial and tractional endless V- belts can be replaced with only four reels of VeeLink. the link V-belt. From these handy reels required belt lengths are quickly uncoupled, made en diess and installed. Bolt re- placements for any type drive are always on hand. Rapid turnover of VerLink un reels eliminates spare belt deterior - ation. Complex, rostly belt inventories are ended. Stock re- cords are simplified. Standard reels hold 100 feet, save stor- age spree.
Veelink cucs on quickly and easily...lowers machine down- time. On drives with outboard bearings, it is installed with- out moving the motor or dismantting the machine. Savings on drives of this type have been estimated to run as high às 9/10 the cost of Installing any other V-belt.
VEELINK
V-BELT
VecLink-known
United
States-han
throughout the proven Itsell
In service on thousands upon thou- sands of drives. Wherever it is used higher levels of power. trans- mission efficiency are attained.
1) Adaptabi teatty Drive
Tested Proved Adopted
by Industry
Stocks Of All Sizes Available
Sole Agents - KIU FOONG TRADING CO.
26, Connaught Road, G.
Tel. 28403
INDUSTRIAL-COMMERCIAL
JOHNSON
OILBURNERS
BURNS HEAVY BUNKER OILS
AGENTS
ANDERSEN, MEYER & COMPANY, LTD.
DAVID HOUSE
Agents
TEL: 28091.
Preserve and Protect
ENGINEERING
PAGE
LONDON TOWER IS FRIEND IN NEED TO APPROACHING PLANES
Many people have heard of the Tower of London, famed for its history, crown jewols and beef- caters, but there is another tower in London of growing significanco. It is "London Tower"---- the Air Traffic Control Tower, at London Air- port-which Captains and Radio Officers of BOAC Spoodbirds and other aircraft call by radio telephone as they fly in ovor England from the For East.
At safe heights above hills and clouds, as directed by "London Tower," they "home" on a radio beacon on the outer perimeter of London's Air Traffic Control Zone, the circumference of which is roughly 30 miles from the centre of London.
Inside the BOAC airliner
of R
J
re-
Approach Beacon System and enables aircrew to find their own way in by following indi- cations on a radar acreen.
is an air of expectancy always associated with the end journey. Passengers MAY sipping the last of their
In the GCA "Talk you flowers"! freshments, one or two of
system the ground controllers them are shutting the hand watch the radar sereens and phas baggage they, have used on the | latiding sirections to the pllut by flight, steward and stewardess radio telephone.
I
he
1
later stages of the aircraft's ap- prouch, down to the immediato approach to the runway.
Watching The "Blip"
The London director tells the pilot of George Obóc Charlie to alter his course by a given num- double checking that the
in this same manner on the screen-thus he' eonflemma that the "blip" does George beyond doubt represent
Oboe Charlie.
ber of dehilp" moves
10
on
Then, whon the plane Is some
miles from the air. port, its path le, plotted Rereens of a greater scale, one showing its progress relative to а plan of the runway and another, operated, perhaps, by an ex-WAAF Indicating whe- ther the aircraft preaching at the correct anglai of glide. Bhe uace a scale which lella tho "talk down" man whether the aircraft le too high or too low.
URANIUM DIVINER
In order to ensure that Australian resources of the atomio raw materials, uran- lum and thorium, are known as soon de possible, the Aus tralian Government has lasu- ed
A pamphlet for proepes- tore. It describes how sim- ple and inexpensive instru- ment, the electroscope, to de. fect
the minerals,
made.
Hip
constructed
САП
be
out of the ild of a tobacco tin, a piece of two-inch glass tube ing, a memalt pleca of copper,
and some sulphur, ap.
two to three inches of gold or alum- Inlum fall. It works on the principla that air, normally an insulator, becomes a con- ductor in the presence of radio active minerals.
The Caplain, his hands on his controls and his eyes on his in- struments, hears the voice uf are giving help where they can the pilot in Speedbird George "talk-down" In his earphones. "You Ace Ave miles from the and are busy answering ques- Charlie chooses GCA
"Hall Trion Tower, touch down. Lions.
Turn right three Bequest GCA." In the meta- chugtrees. Turn right one de- Some passengers are idly tonk-
Line, under instructions fram gree,,. Hold that heading. Ing nut of the window at the Control, he has wide blanket of cloud below themheigh: to 3.000 feet.
been reducing You are 50 feet too high... two
The pussen miles to go love 30-feet and one or two of the more
Left one de- knowledgeable among them wondering what method the Copthin will
deseend through the mist and land on the Funway.
use
Lo
HITO
The aircraft's radio
Compass khows that the plane is over the bearon. Out goes a radio tele-
of opaque whiteness: the steward
{1:
Hold The
caravan
gers Bnd themselves in a world You" are OK banding and stewardess no quietly about! 11: the GCA arvan the their duties under the cabin lights: "hilip" approaches the runway. and then the sign "Fasten Seat | The voice continues. "Half a Bells" appears un the indicator mile from touch down. You are Correlly lined up. Look ahead.” The Captain looks up from his caravan supply tlivce distinct instruments. Alead is the broad Through the
in the cabin,
The rautur screens in the CCA
MORE STRENGTH AND LENGTH
OF SERVICE
The new nodular cast iron. produced in the laboratories of! the British Cast Iron Research
Association after long research,| has so many advantages that satisfied it will experts are
| eventually supersede ordinary
phone call from the Copiala: types of information: a general line of the indows passengers grey cast iron in a number of
"Calling 'London Tower, Speed-plan view
of the surrounds of aircraft cabin
burn George Obor Charlie heee. London Airport up to a maximum suddenly see grass, distant build-engineering applications. It is Over beacon, Request weather
of 30 miles; and on the precisionings and roads. There is a musical made by adding to the melten and altimeter setting."
screens, having a maximum conge | squeak as tyres touch the runway. metal a small amount of cerium. of miles, the plan and eleva- | Control room clerks enter "1613) (Most lighter flints are 50 per Hon Information concerning thers" on a board,
cent. cerium).
Control Zone
"Lontion Tower" hears thi message loud and clear in its loud speaker in Approach Control uni the Brst floor of the building, where ofkers and their men ami woinen assistants contral by radio The
pasange of aircraft through the Control Zone,
Above them in a gloss "pont- house" on the root is "Landing Control" where officers regulate the air traffic movements in the Immediate vicinity of the nirfieki and manipulate the elaborate airport lighting system; menn- while, at the beginning
of the runway is a caravan containing the Airfield Controller.
He is a
# "last minute traffic cop," whose job it is to check that two aircraft do not use the runway at the same time, and to warn the pilots by red lighte if they show signs of doing so.
Last but not least, near the Tunway is another caravan for the Ground Controlled Approach Radar apparatus and the control- Jers who operate this "Talk you down" system.
Approach Control answer Speedbird George Oboe Charlie. tell him in staccato "air control English" the height of the low clouds, the visibility, wind direc- tion and the setting for the air- craft's altimeter so that it will recard the height above the air- Nekl.
Threo Systems
Photo Type-Setting
The operator is here projecting times of matter from the 35mm. rolls on to the final transparency. He can inspect each line in a ground-glass screen as he works On the near side of the camera are the five reets of cine film, each carrying either text, headings, sub-headings or corrections.
Weather conditions ure poor. The BOAC Captain has to de- AL the recently opened contains the mechanism of the cide whether he will divert to laboratories of the Printing Monotype composition caster with another airfield or land at Lon- Research Association at Lea-
the main difference that a photo- don. If he decides to Jand he therhead. Surrey, England, grophic negative takes the place must make up his mind about which method he will ask "Lon-equipment has been temporari-
don
In
Touer to operate for him ly installed to demonstrate a
of the matrixes. The letters punched in the record are
Kraphed on a roll of 35 mil Photo
The new process has increased the tensile strength of cast iron threefold. In World War I ten- site strengths of about 15 tons square inch were achlevert. By World War 11 these had been Improved to about 25 sauare inch. Iron treated with certum now gives up to 80 tons a square inch-and the process requires no material ehangu 'in Irundry equipment.
All the raw materista ro. quired for making cast
iron
can
Check
with
FERRANTI Instruments
Watthour Meters Clip-on-Ammeters
Light Testers
otc. etc.
SOLE AGENTS:
GILMAN & COMPANY LTD.
ENGINEERING DEPARTMENT
4a, Des Voeux Rd., C.
RN
RUSSELL REMBERT
Telephone 31146.
Silent DIESEL ENGINES
Anti-knock cumbustion head. Totally enclosed.
。 Silent and Vibrationless.
will
&
Electric or Air Starting.
it
C
are available In Britain, The advantages of increased tonalle strength; and ine fact tha' variable sections can be made) in one plece, and less machin. Ing is necessery---there benefit the whole world. Moreover, where quick cx- pansion of production is requir ed, foundries
provide without the danger of bottle necks which may arise when
have to materials
be subjected to longer processes such as ex- trusion, pressing and forging.
Cast Iron Is now being used for making engine crankshafts. It has been found necessary to remove only three to ten
per cent, of the cast weight in Binish- ing processes, whereas in magy forged steel shafts two-thirds to three-quarters of the original forgings have to be removed. The qualities of ordinary cast Iron will be further improved by the use of the new nodular cast iron. Nodular cast iron is also casier to machine, strength for strength, so that saving should be possible in cutting tools, time, labour and overheads.
Added Life Experimental work carried full fine has been out by Tiglghman's Patent Sand After a completed the film le advanced, Blast Company, Manchester, the distance depending on the England, may result in increas- space required between the Ing the life of machine paris lines, and the next line la photo tenfold. "Shot peening" sraphed. The line-projector name of the process on which
of photo-typesetting, cinematograph Alm carried in a order to bring George Oboe system Charlie safely down through the which dispenses with cast camera under the type negative. misty blanket between him and metal type. Its trade name is the runway. Available to him if Rotofoto. he wishes to land at London are
The new method is a purely the Radio Range, SCS 51, BADS photographic process which should or GCA. སྡ*
be useful in printing type by the The first two are mystem that lithography and gravure processes enable the Captain to tell, by now widely used in the produc- sounds in hla carphones ortion of books and periodicals. visual indloationa ол his In- Instrument panel, whether ha la corretty following a radio beam. BABS stands for Beam
with Berger Paints!
Vornishes,
Cellulose,
Colours
Enamels
Oil-Bound Distempers,"
AND IN PARTICULAR -
"POMPEIAN" the Enamel that needs no Varnish
REISS, BRADLEY & CO., LTD.
The system appears to be as
operates at about the sama
machine.
the
speed no ■ Monotyps casting research is being carried out, improves fatigue life by pelting cheap 真型 standard printing
Reader's and authors' correc- and so toughening metallic sur practice; and it has the obvious tions are dealt with separately faces. advantage that the photographic and contained in other rolls of The fo of many working mastercopy of a book's type. Alm, the make-up machine opera-parts of cars can be extended script, from which reprints can tor introduces the corrected lines more than fenfald by the new be made, can be stored in a during the process of making a process. Several manufacturers small space.
perfect photographle transparency are already shot peening such The Botafoto equipment com- of the type matter. The opera- things t torsion bara, dynamo prises a Monotype keyboard, a tions are simple and rapid, and shafts, clutch springs and crank- line-projector, and n make-up | produce transparencies of high shafts. It has been found that machine for producing paper fldelity.
shot peening also saves time in
proofs and im transparencies. A Any type-taco can be employed polishing, and even dispenses with punched paper record, similar in by using the appropriate negat One more recent application appearance to small piano tive, and type sizes can be control-is in eliminating porosity in nl- player roll, representing the led by the magnincation employ-uminium and other alloy die- "copy," is first made by a Mone-ed in the make-up machine. At castings. type keyboard operator,
present three negatives are used This paper record is transfer- to cover the complete range of red to the line-projector, which composition sizes.
AVAILABLE EX STOCK HỒNG KÔNG
M.S. BOLTS & NUTS
M.S. RIVETS
BRASS SHEETS
-BRASS RODS:
JACKS
AT COMPETITIVE, PRICES'
WILLIAM JACKS & CO., LTD.
307 Prince's "Didg.":
Tel. 32227.
"Vipour, honing" is anothar process developed by this firm. Į In it fine abrasives in water or chemical amulsion are discharg od against the metal surface' 10 be treated, This reduces time spent in polishing and eliminates It for curtain artistes.
In certain Instances it is possi- bla to plate direct on to a vapour. honed article, a technical achieve- ment of considerable importance. Vapour honing is used to remova burrs from the eyes of needles, machine marks (before polishing) on the rotors of jet engines-and in fact, machina marks from a variety of articles.
Profatype machines applying the new processes are being teat- ed by the Manchester ¡firm of || R.J. "Richardson and Sons.
arm
MARINE & INDUSTRIAL UNITS
Enquiries to:
7-100 H.P.
SWIRE & MACLAINE LTD.
ENGINEERING DEPARTMENT
L.CONNAUGHT RD. C. TEL.. 30331.
A.P.B. 17
EVERSHED & VIGNOLES LTD.
SOLE AGENTS:
THE JARDINE ENGINEERING CORPORATION LTD.
14-18 PEDDER STREET, HONG KONG,
TELEPHONE 30311,