Page #
THE CHINA MAIL, THURSDAY, MARCH 3, 104D. EXI
For
THE
BRUSH
ELECTRICAL ENGINEERING
******** CO., LTD.
TÚRBINES AND TURBO-GENERATORS, A/C, and
DAC, MOTORS, ALTERNATORS, D/C GENERA-
TORS, HIGH and LOW TENSION SWITCH! GEAR,
MOTOIL STARTERS-GRIN TYPE: TRANSFORM="
ERS. MEDIUM POWER and DISTRIBUTION
TRANSFORMERS, CURRENT and POTENTIAL IN-
STRUMENT TRANSFORMERS,
See the Syndicate
THE PEKIN SYNDICATE LTD.
HB, Chater Road.
Telephone 32400
SOLE AGENTS FOR HONG KONG & CHINA
CANVAS HOSE
British Made
FLAX CANVAS FIRE HOSE.
11⁄2", 2", 21⁄2′′,
3", 3/2" dia.
Stocks corried by
A. MING & CO., LTD.
105, Des Voeux Rd., C.
店金泓發明
司公限凇
26147
(Opp. Central Market)
ENGINEERING PAGE
New Process Of Drying Evolved
With the method of drying in the sun, as still fre- quently used, the heat is transferred for the greater-past-through-rudiation. In industry- however, one cannot be dependent on the sun's" rays, the seasons, the time of day, cloudiness, so that artificial sources of heat, such as ovans, have to be applied.
During recent years a simple irradiator has been put on the market which has led to the develop- ment of a drying technique in which the trans- ference of heat takes place almost exclusively through radiation.
are
red
en
itH
Illustration of a tunnel with Philips Infra-Red Drying
Lamps.
Radio Equipment Exports Growing
Exports of United Kingdom radio communication equipment, navigational aids and industrial electronic apparatus were doubled in 1948, the estimated figure exceeding £3. million as com- pared with £1.5 million in 1947. In addition the indirect exports amounted to a further £2 million.
It is well known that the chiefly rays of this particuar wave. radiation of heat is in essence length. From this radiation the high drying wave movement in the ether lamp derives just like radio-waves, 1ght-capacity.
The temperature of the heater rays and X-rays, which differ principally only in their wave makes it necessary to seal it inside a bulb and to fil the latter with lengths. In their order of
inert gas.
The bulb has a cross-rection with wavelength, starting with the parabolic longest, we first have the radio-widening at the place of the fla- heat-rays.ment, is frosted outside and has an waves, then the both invisible to the eye, and aluminium reflector Inside. The peculiar shape enable the drying finally the light rays.
The light rays of the longest rays to be directed exactly where und im they are required, which is a very wavelength mediately above these visible rays, great advantage,
The incandescent body is a tung on the order of wavelength, are
call which takes up 250W: Invisible red rays, called "infra
The original direct export tar- of the year the number of ships red" which belong to the heat the temperature of 2,200 K de-
from science this termines the life of the lamp:get for 1948 was £2.55 million, equipped with British commer-
to cial Increased
radar In modern
ibls later group of infra-red rays is divided 5,000 burning hours average.
Characteristle features of the £3.00 and to £9.3 for 1949. In adapted war-time equipment was the an- about 300 and in 1949 we ought into longwave and shortwave ray PHILIPS INFRA-RED DRYING giving these figures at
Because of
in their a difference.
nunl meeting of Britain's Radio to be able to equip more than a
and Electronic Communication has been found properties.
ship a day. The British 3-cen- Infra-red gives sensational re-
Association, Engineering
ship radar sets, conform- the timetre the infra-rays of "short" length, those closest to the light auctions in drying times in many chairman, Mr. L. T. Hinton, said: Ing to the Ministry of Transport's
to the revolu
present conditions continue, very
specification, waves, are for many drying pra applications, due
exacting heating "through .and cesses much more favourable than tionary
there is little doubt that we shall now coming into production in wavelength. through
incquers, like with
reach our 1949 target".
increasing quantity. This equip those of the higher If therefore it is desired to pene varnishes, water containing pro-
Referring to navigational aids, ment and our harbour and ferry first in trate cortala substances with heat duct, etc., avoiding the formation
the world which came into rays, we have to use the infra-red of surface crusts, eg. in the Ford Mr. Hinton stated: "By the end radar installations-the rays of short wavelength because Motor Industry where it used to the longer heat waves become ab- take 30 minutes to dry the first sorbed on the surface of the sub coating of lacquer in a muffling "depth oven, this is now done in 7 min- stance, there
utes, whilst the drying time for effect".
the top coating has been reduced from 80 to 14 minuter.
Waven
being no
that WAVE-
LAMP:
Specially Studied
The installation is cheaper and occupies less space. Owing to its light weight, the drying-lamp-in- stallation can be set up anywhere and in any position.
being
Insulated Cables In Wide Use
09
distinct
are
operational use during the year and have already proved their value in fog, will demonstrate, we believe, that Britain still holds the lead in radar".
to
RN
RVSFELL SUNBIET
Silent DIESEL ENGINES
silen
Anti-knock cumbustion”TM head:
Totally enclosed,
Silent and Vibrationless.
•
Electric or Air Starting.
MARINE & INDUSTRIAL UNITS
Enquiries to:
7-100 H.P.
SWIRE & MACLAINE LTD.
ENGINEERING DEPARTMENT CONNAUGHT RD.. C. TEL.. 30331.
316 sizes..
INDLESS V-BELTS
CAN
Replaced with only sizes of Verlink
The annual report of the As- sociation, which is one of the constituent bodies of the Radio Industry Council, states that the Philips Infra-red lampa are
year has been notable for the lamps of 200W, supplied for mains
New types of mineral-insulated
extent which the Associatiori from 100 to 260 Volt and Alfed
cables are now being made in has co-operated with Govern- with a gas of which the charac With Phillips Infra-Red Drying Britain and the standard form, ment departments, subjects denit teristics have been especially Lamps, there is not any which is finding a wide variety with including research and studled for this particular parole, need to certain products in of opplications, comprises a COD- worm development, standardist- of quicker and more economical the open air, which means a con- per sheath containing magnesium tion of components, safety drying. The lumps are supplied siderable saving от красо and oxide and one, two, three or more at seo, training of rodor opera-
single strand copper conductors
tors lors, specifications for "business embedded in the insulating radio", the promotion of television material.
The process of manu- transmission equipment 1000 | nga spaco, a fecture is very interesting.
tube
export, increased use of British heavy gaugo copper
and aviation redio equipment,
velopment
with a bayonet cap or with a time.
screw cap.
at
Many Uses
generally.
Ds an
A.P.B. 17
As many as 316 sizes of Industrial and fractionať, endless V- VeeLink, the helta can be replaced with only four reels of link V-belt. From these handy reels required belt lengths are quickly uncoupled, made endless and installed Belt re- placements for any type drive are alwaYE on, hand. Rapla turnover of. Veelink on reels eliminates spare belt Caterior- ation. Complex, costly belt inventories are ended. Stock re- cords are simplified. Standard reels bold 100 foot, save stor-
-VeeLink-goes on quickly, and easily...lowers machine down- Savings
on drives of this type have been estimated to run as high as The National Radio Exhibition 9/10 the cost of installing any other V-belt.
Olympia, London, from Septem
The Philips Drying Lampe emit Infra-Red
the raya,
maximum Telsz energy of which is radiated at a
manifold:—fo Its applications are manifold loaded with preformed blocks or for air control and air radio de-out moving the motor or dismantling the machine.
time. On drives with outboard bearings, it is installed with= 23612 wavelength of between 1,300 and
white magnesium oxide, in
in which 1.400 Angstrom units, exhaustive
drying textiles in the various pro the requisite number of axial Wave- research having proved this length to be the most efficient for Case of manufacture, as well na holes has been left in the all drying purposes. The heat is for drying finished fabrics. It manufacture. The mag("Radiolympia"), to be held at
has been developed by a filament glowing
proved that the Infra-f
In is de-hydrated oxide
ber 28 to October 8, will be the such a temperature us to emit the alto not at the dyen or temperature ovens and atted into exhibition at which the products
the quality of the fabrica,
the tube while still hot. The of the Association will be most 2. For preserving Aircraft and other delicate instruments.
barg copper
which eventually fully represented and should be will form the conductors are of particular interest to engineers 3. In the motor car industry- then inserted into the holes and and official repr already applied on a
icial representatives from cast scale the whole assembly is gradually
countries, whe for drying and baking lacquers on lengthened by successive draughts any overseas are Invited to abjects
to communicate with of any size, from the until it assumes the final dia- the Association at 59 Russell smallest part to completa motor metre and
length. Because of the great ductivity of copper this Square, London, W.C., for 4. In the leather industry- for drying sheets of leather in process produces an entirely uni
form cable in which the insulated in various stages of processing and conductors are spaced within the ment will be demonstrated at the
United the finished products. Also internal bore and never found to British Industries Fair drying after glueing.
deviate from their proper loca
FOR QUICK ECONOMICAL EFFICIENT DRYING
PHILIPS
Philips Infra-Red Drying Lamp
Sole Agents : CONNELL BROS. (H.K.). LTD,
CENTRAL RADIO & ELECTRIC CO.
Distributors,
68, Nathan Hand- Kaw loten.
carz.
vory
for
0. For biscuit and rusk baking, The product gains in tante, colour and lightness and the maximum of bygiente conditions le maintained.
In the manufacture Paints.
B. For wood drying.
Speed, Of
of
the
much that is new
VEELINK
V-RELT
throughout the VeeLink-known
Itself United States--has proven In service on thousands upon thou- sands of drives. Wherever It used higher levels of power mission efficiency are attained.
Tested Proved * Adopted
by Industry
Autostable to sit, Length - Adaptable to
Stocks Of All Sizes Available
Meu radar equip- Sole Agents - KIU FOONG TRADING CO..
(Earls
6. In photography-for drying tions. There is thus ne danger of Court and Olympia, London, and Alms in combination with ventila- any
And
of the conductors being dis-Castle Bromwich, Birmingham,
May 2 to May 13.) tion. There is only a slight tem- placed towards the outer circum- perature elevation and drying isference of the insulant and de- done
IRON ORE PLANT quickly: 600 metros 35 veloping an incipient fallure. The mm film per hour with 10 drying current-carrying capacity of this London, January 26 (LF709A). lamps 24 kw.
type of cable is outstanding as The firm of Dorman Long who compared size for size with other built the Chien Tang River Bridge systems; for instance a mineral- and the steel framework of the insulated
conductor
of 0.007 Metropole Hotel, Shanghai, the square-inch cross section will Memorial Bridge, Bangkok, the carry 45 amperes while a similar Handsome Khedive Ismac: Bridge conductor.
of vulcanised India at Cairo and hundreds of other rubber in conduit or paper-insulat- notable structures throughout the ed, lead-covered cable and the world in addition to the Sydney weight of an Installation is much Harbour Bridge, are now putting
than that of load-covered lato
what is probably esterial in aircraft and marine the most modern plant in the world work these properties may be of for the handling of iron ore, The experimental Beryl-Meteur great value. Beside a saving in
The development programme of twin-lot fighter has climbed to a weight of 57 per cent, and in Dorman
of 50 per height of oven-and-a-half miles bulk
oro handling plant which the new
plant, la only one in in seven-and-a-half minutes. In cable is entirely non-ageing. It stalment, represents one aspect of the vigour of the British nice! in- The first minute it climbed two is already largely used in in- miles, in a minute-and-a-half it flammable atmospheres In such dustry. It is such planning which was three miles and places as oil refineries, chemical | has enabled the industry to bet In three minutes it had climbed Ave works, and the like. The manu-progressive records through the
facturers are Pyrotenax Limited, postwar period with prospects" of According to expert opinion this? Victoria Street, London, 5.W.i. further advance in coming years. performance gives amutrance that Beltain has the resolve and the technical skill to reduce the d vantage of the 600 m.p.l, bomber, which are about to go into servica with
many air forces, including Britain's Royal Air Force.
miles.
New Fighter.
Another British meronautical event, achieved since the start of the year, in the successful
Dest
fight of
the tan
gas turbing.
Siddeley engines,
cent, the new
PHILIPS
*LUORESCENT TUBES
Flighte
made with them fitted ไก Lancaster bomber which wat being wood as a "ying de. The two engines, each of which develops nearly 4,000 shaft h.p., were flited in the cuter port and starboard nacellad, while two. of the northik Rolls Joyce Méx lin" engines wore retailer in the Innor nacelles. The first fight wha of 40 minutes duration Noduring Bole which the engines behaved per footly,
TL
PHILIPS
HIGH LIGHT COEFFICIENT,
DOUBLE THE LIFE-OF- INCANDESCENT BULBS,
· LESS GKÅRE AT THE LIGHT, SOURCE.
Insist on T L tubes Obtainable at alt Elèctrical Dealers...
MANNERS ENGINEERING LIMITED.
26, Connaught Road, C.
BRC
FABRIC
Tel. 29405
ELECTRICALLY CROSS-WELDED
STEEL WIRE MESH
IN ROLLS OR SHEETS
FOR CONCRETE REINFORCEMENT
Stock Available
DAVIE, BOAG- CO., LTD.
Chartered Bank Bldg.
Agents for:-
Tal. 28117
-BRITISH REINFORGED CONCRETE ING. CO.LTD.
E