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THE CHINA MAIL, THURSDAY, NOVEMBER 6, 1947,
ENGINEERING PAGE
Speaking On A Ray Of Light
:
Development of n super-de- luxe "private telephone line" now permits voice conversation on a narrow beam of Invisible light shooting out like a rifle bullet.
The Instrument was originally designed for the U.S. Army Sleen Corps early in the war,
was not released security regulations until cently.
וחות
IC.
The "beam telephone" was fle. signed by a group of Yale Un iversity selentists, headed by Dr. William W. Watson, chair- man of the physies department, The group described their work le rurrent issue of the Mournal of Applied Physles".
The tents, as completed by the Yale selentists, showed that the device euld be used by day or night with infra-red filters
detection by preventing: enemy in darkness. 1ts runge was from one to five mites.
l
A low powered tolescope was urd
or
to locate the person
comm.pica- group with whom tion was to be established. Cons veruglinn WOR rarried
ru-
through the use of a small mlerujshune and headset ceivers, The beam telephone had advantages over the walkle- talkie system in that the com munication travels on a narrow beam, whereas devices using low frequency radio algnais travel in circular patterns in all direc- tions.
British Idea
Dr.
For Tomorrow's Fields?
Here
Arthur Redebaugh, of Detroit's "New Centre Studios," spent the war designing destruc- tive weapons. Today, he is busy designing and illustrating peaceful "Things to come." is the farmer's delight of the future- tractor with an air-conditioned, - cupola.type observa-
to cockpit providing all-round visibility. Gune will be the days of hot run and exposure, the Inhalation of dust and getting soaked in the rain. The farmer will be able to dress like a city The engine is mounted behind the driver. (APhoto). allcker; there's even a built-in radio.
Is The Skyscraper
Here To Stay?
Something like
By G. W. POMMER, JR.
of the "Christian
Science Monitor"
learned in designing the device,
tou of Minneapolis Looks like a trick question,
it? Watson
from patent offices here and and his associates, doesn't Richard F. Humphreys and 1.L. asking if the automobile is
abroad that no patents had been Woernley, faced the problems bere to stay! Yet, there may
issued on the idea, so he drew ilght of using infra-red
to be a point to it, after all. It
up plans and made av applica- guarantee Invisibility at night may be no small factor that,
tion, using a 28-atory structure as an illustration. The patent, and a light source, that would for the first time since the sky-
dawned, In the vary with the rise and full of scraper era
granted May 22, 1888, covered the iden in the United States, speceh signals.
1880's, America is giving lofty building plans the cold should other one of those perplexing England, France, und Ger
engineering problems They finally decided to use ner. Only a scant bandful of
that many, but it was too late. Dur- method which had been devised tall offer buildings and hotels scraper proponents from tin Mr. Bullington learned from have beset the path of sky-ing an infringement suit later, first by a British television are under construction in this
to time Let's see what's been the courts that he had lost his company. In this technique, itcountry today! Twenty years
going on.
had priority because the idea was possible to bend the beam ago. New York City alone had of light in accordance with the that many mushrooming on itssurance Company of New York test before his application was In 1881, when the Home In- already been put to practical engaged William Le Baron filed. Jenney, a Chicago architect, to
The Lift erect, a tall building containing a steel and iron frame, enclosed Real progress an-with masonry, there was much made when Cyrus W. Baldwin WOK finally
hend shaking! Experienced perfected the hydraulle eleva- architects and engineers flatly tor. It quickly superseded all declared that expansion and the others, for it was both rea- contraction of the iron would sonably fast and efficient. seriously crack the masonry Yet the problem was not. and render the structure un completely licked. Practical safe in just a few years. Many limitations on the length of Inymen were willing to, bet hydraulic elevator plungers all that the thing would topple but prohibited their use in over in the first stiff sale!
voice frequency.
The "beam telephone" 19 shaped something like a -ma- chintet's tool box. It is portable |-and-earriós-Rg-own-power-aup- ply, a six-volt storage battery,
SECRETARIES!
THIS OFFER IS
GOOD UNTIL 15th NOV. 1947
IF YOU HAVE NOT. YET BOUGHT YOUR BOSTITCH STAPLER, BUY IT BEFORE 15th NOVEMBER, AFTER WHICH DATE THE
OFFER OF THE INTRODUCTORY PRICE CEASES,
INTRODUCTORY
BOSTITCH STAPLER
HK.$8.00 EACH
PRICE:
INCLUDING 1000 STAPLES,
A PERSONAL STApler with a HUNDRED USES
SECRETARIES
·
DOCTORS
.
FOR EXECUTIVE
SCHOOL TEACHERS BUSINESSMEN • LAWYERS CLERGYMEN * STUDENTS + HOUSEKEEPERS.
A HAND STAPLER A TACKER
-OBTAINABLE DIRECT
A DESK FASTENER
SOLE AGENTS:
1
FROM
NAN KANG COMPANY UNION BLDG., H.K.
TELEPHONES 22118-24044.
horizon.
What's wrong? Have we lost confidence in une of the peculiar greatnesses of Ameri
Or are we up against ca?
The "New" Canton
The "Canton," after being in the builder hands for nearly fourteen months, has now taken her place once more on regular P, & D. service 25 a fully reconditioned Passenger liner.
Daring City
buildings of over 20 stories. The electric elevator, first tried out in 1887, seemed to be the obvious answer, but it was not Chicago was chosen as the until 1919 that n Bultable She sailed from London on October site for the new type of edifice method of current control 16th and, from Southampton on Octa- ber 17th, calling at Part Sald, Sanz, city, unhampered by traditions this type of lift smooth and
because It was a young, daring' could be worked out to make) Aden, Bombay, Colombo, Penang, Singapore and Hongkong to re-opes and codes. It was the logical safe. Today, the electric eleva- the P. & 0. United Kingdom/Far place for progressive builders tor is supreme, and, in many to demonstrate their radical modern buildings, it has become originally idoas. New York, with two semi-automatic. Where express launched in 1938 and sailed on her centuries behind it. was runs permit it, such as the 65- maiden voyage in October of that hesitant about structural ex-floor, nonstop lift in the RCA year. Specially designed for
perimentation.
|Building, New York, speeds of Straits, China and Japan service, the
Mr. Jenney's work neither 1,400 feet per minute are com-- has a gross tonnage of 16,000 and crumbled nor blew over, and moni speed of 18 knots.
odying this now theory of de- lema seem to have been solved. quite a flurry of structures, em- The major engineering prob-
technical standpoint, sign, followed hard on its heels. From
East passenger service,
"The "Canton"
the
She was not fated to make many voyages under peace-time conditioni, for when war came in 1939 aire was at once taken over by the Admiralty The 18-story Tacoma Buliding, skyscrapers hava no definite as an armed merchant cruiser. After which went up in 1887, treated height limitations. If enough duty, from Chicago's "aldewalk suporin-ground space could be secured, which she emerged unscathed, the tendents" to the startling spec- it would be quite practical to "Canton" was sent to Cape Town to tacle of outside brick walls be erect a building one mile high! be converted to a a troopship and bad, ing laid on shelves several wheh hostilities ceased, Meamed aatories in the air! Two years total of 220,330 miles,
some years an escort
there
As in the case of the "Siratheden," later, the Rand McNally Build-
been
very like structural ing boasted the first rolled alteration to the "Canton," but her steel beams and columns, fa- outward appearance
will allow a bricated in standard shapes striking change.
and riveted together through-,
She will no longer show the black out. Then Mr. Jenney put up! hall and funnel and buff upperworks the Loiter Bullding, first
one
of her short pre-war career, but will completely free of self-sustain have the white hulf and upperworks ing walls.
and buff funnel which have proved
particularly suitable in other P. &
passenger ship for voyager
tropical waters."
Object Of Wonder
The Bostitch Stapler
Madb by the manufacturers of 800 models of staplers, tack- OTA and wire stitchers, the "Bostitch Personal Stapler" has a wide range of uses-It can be used on the 'deak for Architects Daniel H. Burn-fastening choques, letters and It has fortunately been possible
to ham and John W. Root drew | related papers; In the hand restore the public' rooms and cabins widespread attention in 1880 for scaling lunch bags and at- in both classes to their pre-war standard of comfort, although, an with their 21-story Masonic taching tags and Inbels; and other change will be that the former Templo, then the highest on the wall or notice board for Second Class will now be Touris tenantable edifice in the world! tacking up notices, shelf papers Class. This brings the "Canton” Into It was the object of much ; and ·curtain - Elë-backs. A ope- tine with other P. & C. passenger wonder and speculation, and clol low,' introductory price is Tessel as they return to the Aus many considered it the uit-quoted at the moment. tralian and Far East services, Sle mate of this type of construc- The Bostitch" is not a cheap | carries 300 First and 244. Tourist tion, AJ But model of a larger stapler. It
passengers,
Steel frame buildings took is designed and built to last The Commander, of the "Canton"
•
is Captain G.-S. Stable, who has hold rapidly, and architects in for years. The knob and re- been la command of the vessel since other localities were fired with movable base ara of special, January, 1946, A
enthusiasm Leroy S.Buffing-shock-resistant plastic
Chubb & Sons
Lock & Safe Co., Ltd.
Sole Agents:
THE JARDINE ENGINEERING CORPORATION LTD.
14-16 PEDDER STREET, HONG KONG. Telephone 30311
METAL WINDOWS GIBBONS
High class Architectural Fittings
Stocks Available
GILMAN & COMPANY, LTD.
Engineerlig Department
43 Des Voeux Rd. C.
Telephone: 31146
NEW ARRIVALS
Farnsworth
MODEL
GT-669-WAZ
6-TUBE
BAND SPREAD BAND-O-LITE DIAL
UNIVERSAL TRANSFORMER
ALL-WAVE
RECEIVERS
Thoroughly engineered to provide lasting satisfac tion, this advanced receiver offers the exclusive new Farnsworth Band-O-Lite, tuning dial. Taking all the guesswork out. of station determination, the Band-O- Lite Dial completely illuminates the respective wave. band selected, enabling the operator to arrive at the definite frequency shown at the intersection of the." lighted band indicator and the station selector. Five wave bands including standard, tropical and short wave reception, Band spread. Cabinet styling has been patterned to complement, the advanced chassis design. Top and sides are of genuine selected wal-- nut veneers while the balance of the cabinet has been carefully finished to simulate native striped walnur and expressive blond burl. This instrument incor- porates a phono-jack för plug-in phonograph operation:
$450.00
THE SINCERE CO., LTD.
SOLE, DISTRIBUTORS.
chaild out-
A