1933-08-05 — Page 2

GE.C

EVERYTHING & ELECTRICAL

"Magnet"

ELECTRIC FANS MADE IN ENGLAND

Price with Rod. $5.18.6

Speed Regulator

15/6d.

“KINGSWAY" CEILING FAN 56 Sweep,

Price with Rod

£4.12.6. ⠀

Speed Regulator 15/6d.

'KINGSWAY JUNIOR" CEILING FAN 44′′ Sweep.

The

"KINGSWAY" Ceiling Fans are specially designed for use in tropical climates. They are practically noiseless and represent a marked improvement on any other alternating current ceiling fan hitherto produced.

For further particulars pleas; apply :- The General Blectric Co. of China, Ltd. Queen's Building, Hong Kong.

HONG KONG ĐAILY PRESS, SATURDAY, AUGUST 5, 1933

ENGINEERING AND BUILDING

Deterioration of Structures

In Sea Water

13TH SERIES OF INTERESTING EXPERIMENTS

corresponding kots at Halifax were not so badly coated. Many of them were, however, badly rusted and deeply, pitted, although the chro- mium steels were generally, though not always, sound, and those of Armeo iron were found to be in good condition.

Other series at Colombo, Ceylon, and in Plymouth afforded nothing new to report. Detailed fadings had been formulated by Dr. 3 Newton Friend, on ten-years' speci- mens sent from Auckland and Hali fax, and have been compared with those found after an "exposure of five years.

MODERN TOWNS WATER SUPPLY

NOTABLE EXTENSIONS IN LONDON

All over the world there is an in- ereasing rate of demand for town water, and in London the Metropo- litan Water Board are now expend ing 2 sum af approximately £100,000 on the extension of their filtering arrangements at the Green Lanes pumping station, Stoke New- ington, which supplies particularly the City and the West End.

NEW ELECTRIC BUS

THE

FÄST AND CHEAP TRAVELLING

LONDON, Aug. 3

CONTRACTS FOR BRITISH FIRMS

Hesar Cambridge

Instrument

for

Company, Limited, 45, Grosvenor- place, London, SW, 1, have recent- plac ly received orders for upwards of 140, indicating thermometers use on H.MS. Exmouth, and eight new stream-lined deisel elec-alasa "E" destroyers, for measur- trie railways built by Messia ing the temperatures at the boiler Armstrong Whitworth to make

stop valves, boller uptakes, turbine possible rail travel in high speed regulating valves, and oil-fuel and low cost over short distances heaters Cambridge thermometers. was on show in London to-day. Fare also being installed on

Carrying its own power, it has H.M.8. Neptune, Achilles, the advantage of quick starting Orion, and in connection with the and stopping without requiring deaerators on the Australian crui- the line to be electrified.

sers H.A.3. Austrália and Can- berra.

and

The 'bus, which is 52) feet long, has 60 seats and weighs 17 tons.

Messrs. The General Eleo- May- It can travel as 70 miles an hour, and on a recent test, covered 20 tric Company Limited

London. miles at cost of 50 per mile-net House, Kingsway

W.C. 9, have supplied." the "shadowless electric-lighting sys

British Wireless.

RADIO REPORTS ON- YANGTSZE TIDES STATIONS TO BE SET UP AT LEADING RIVER PORTS

tem

at the Geological Museum, South Kensington, where the World Economic Conference is sit- ting. The system comprises over 60 indirect-lighting fittings with silvered glass reflectors and equip ped with 1,000 watt, class B, Osram projection lamps.

In 1918, a special committee was appointed, by the Institution of Ovil Engineers, to investigate the deterioration of structures in sea water and until March, 1928, the work was carried out with grants from the Department of Scientific and Industrial Research. Annual reports, published by the Station ery Office, have appeared regularly for some years now and, like the earlier ones the Thirteenth (In terim). Report, bearing the title Deterioration of Structures in Sea Water," and procurable at a price of la. 6d. net, gives detailed information on the investigations reported upon to the Committee, from places widespread throughout the world, The study of these re- porta enn be recommended to all who appreciate the magnitude and significance of the problems dealt with, as proving once again, the value of the correlation of, scatter; i were in a far better state than the equipment for continuously indicat. ranging a-fixed hour for the broad-cable, is 29 nautical miles in ed information, and the isolated experiences of different workers.

Iron and Steel.

Iron and steel test-bars have now been exposed fo the actions of sen-water and sea-air for a period of ten years. Periodical inspection of those exposed at Halifax, Nova Scot a, and Auckland, New Zen land appear to indicate that the most resistant specimens to the nctions of sea-air ard made of high nickel steel. The bars, at settings corresponding to half-tide at Auck- land, were covered with marine growths with greater, or less, rust- patches showing through, but the

Shanks SANITARY WARE

&

CO. LTD.

2 BARRHEAD -SCOTLAND

147.117

MODERN SANITARY

EARTHENWARE APPLIANCES IN

· WHITE & COLOUR

ITD

THE JARDINE ENGINEERING CORPORATION, L

:

(Incorporated under the Companies' Ordinances of Hongkong)

14, PEDDER ST. HONG KONG

SOLE ACENTS

SHAMEEN, CANTON,

For Constructural Work of Every

Description

Use Green Island Cement

WHERE GREEN ISLAND CEMENT IS MADE.

VIEW OF THE GREEN ISLAND CEMENT

HATAKEN FROM THE SEA.

Issued, by the

A GENERAL

WORKS

GREEN ISLAND CEMENT CO., LTD.

2ND FLOOR

EXCHANGE BUILDING

Aarial Corrosion, Aerial corrosion proved of greater significance at Auckland, than that. due to alternate wet and dry con- ditions, but in this respect, as has been said, the high-nickel steels

In order to assist shipping on the Yangtze, the Ministry of Com- munications is completing arrange ments with the Central Broadcast-

The British Post Office has

In this connection they have plac ed a contract with the Paterson Engineering Co, Ltd of London for the design and installation of the essential mechanical equipment for rapid gravity primary and filters of 34,000.000 gallons per Bif hours capacity. This comprises 12 large filter units each 30'0' by 3'0" | effective filtering area, on the latest principles, including central of the whole of the Alter apparatus hydraulically from operating switing Station at Nanking to give out placed the contract for the new Mesars The Telegraph Construct ches mounted on control tables in radio reports on the tides and Anglo-French telephone cable with other important information It the centre of the main operating garding river conditions. It is tion and maintenance company. floor of the filter house.

learnt that the radio authorities Limited. with whom Messrs. Stan

and Cables,. have expressed their readiness to dard Telephones co-operate with the Ministry, and Limited, will co-operate. The sub the two departments are now armarine section, including spare. casting of daily reports so that length, and will weigh nearly 3,000 navigators may know when to tune tons. Messrs. Standard Tele phones and Cables will manufac establishment of" radio ture the lead-covered core for the stations at all important ports submarine section and will also along the Yangtze River is also be provide the requisite lengths of un- ing urged by the Ministry of Couderground cable for use between munications in a petition to the the submarine cable and repeater Executive Yuan, which is request stations near the respective Coasta ed to instruct the respective Prov incial and Municipal authorities The armouring and rubber cover. along the river to carry out this ing of the lead-covered core of the submarine section will be under- measure promptly.

Each filter will be fitted with an outflow regulator in the form of a special Venturi control valve, and in addition there will be included

other metals. Steel, with 2 per ing and recording the loss of head cent, of copper, and nickel steels, through the sand filters and the containing 3.75 per cent. of nickel, rate at which water is passing were in fairly, good condition, while through each individual filtering cold-blast cast-iron showed only unit. The Metropolitan Water slight action, and but little loss in Board supplies to London an aver weight. The teats seem to have age of about 260,000,000 gallons of established that as corrosion is water per 24 hours all the year allowed to continue, the differences, round, while over 50 reservoirs are manifested with the various metals concerned with a storage capacity become less and less pronounced.of over 20,000,000,000 gallons. The order of immunity from de- terioration, on wet and dry alter nating exposure, at Auckland, con- firmed the results of shorter time tests,

Timber..

48 Million Gallons a Day.

A very large amount of Paterson equipment, particularly closed pres sure sand filters and "Chloronomes" for the continuous sterilisation of water by means of chlorine gas, is operating in various plants of the Timber specimens exposed to the Metropolitan Water Board, which attack of marine borers in various it may be stated takes opproximate parts of the Empire, when examin-y 58 per cent. of its total water ed by Professor George Barger, supply from the River Thames with showed that treatment, with naph the remainder from the River Lee, thalene-creosote mixtures was less the new River, and from wella and effective than treatment by either other sources. of the two protectives alone. This may have been due to the poorer Notable for example is an instal- penetrative action of the mixtures.lation of 24 "Paterson" rapid gra Work at Bermuda and Jamaicavity primary filters having a maxi- showed that fuel-oil alone had nd mum capacity of 48,000,000 gallons protective effect, and also that it per 4 hours operating at the was a poor vehicle lor arsenical Kempton Park, pumping station poison, owing to its indifferent and officially opened in October 1929, the erratic entry into the substance of water being supplied through a 6" the timber. Rafts, made of test diameter conduit from the Queri pieces, treated with creosote and Mary Reservoir. The filters are various poisons in 1024, and kept divided into four groups of aix floating since then at Plymouth, units each, the filtering medium were found by Professor C. R. Har consisting of specially graded rington to be still generally sound, Leighton Buzzard saad supported but white pine posts treated with on layers of pebbles of graded sizes Pintach gas tar had to be removed, and cleaned by compressed air. The because of the attack of Teredo, latter operation only takes about after they had remained immune two minutes, the sand being agitat- for six years.

ed to loosen the entangled impuri- ties, which are swept away by wash water and discharged to sedimenta- Reinforced concrete test pilestion tanks, the entire operation of have been exposed at Sheerness, cleaning an individual filter and and in an artificial sea-water en re-starting it on the line being less closure at the Building Research than ten minutes. Station at Watford, but within the

The filtered water is also treated last year appreciable deterioration with a race of ammonia and is has been found, cracking having then sterilised by means of the become manifest in several exam- "Chloronome" · apparatus. Other ples with 1 in. of cover over the Paterson primary filtration plants reinforcement Apart from Port of this type for the Metropolitan land cement-trase mixtures at Wat- Water Board are at the Bara Elms ford, all the rich specimens have Works, with 9 filters for a capacity remained free from cracks, and the of 8,000,000 gallons per 24 hours, Portland blast-furnace cement mix and at the Walton Works, "with" 8 tures tested at Sheerness bave re-filters of large size, having a capa- mained sound. Because of early city of 18,000,000 gallons par. 24. experience of deterioration with hours. A considerable number of some of the specimens in which a plants of this type are also opera- high alumina cement was used, anting it may be stated in many dif additional series is under prepara- ferent countries, including the Far tion, for exposure with the others. East of which well-known examples, Mr. V. T. Halcrow has reported are the Bowen Road, Elliott, and that the aluminous cement, used on Shing Mun plants in Hong Kong.. a reinforced concrete whart at Kin- lochleven, showed no signs of de- terioration after three years ser vice, though the minimum cover was no more than 1) in. Engineer- ing.

Reinforced Concrete.

di

CONSERVANCY WORK IN

KIANGSU

CO-OPERATION OF LOCAL

·FARMERS A

SHANGHAI NORTH STATION REPAIRS

With the decision of the Minis try of Railways to suspend inde- Anitely plan for the construction at Chenju of a new Shanghai North Station, the Nanking- Shanghai Railway Administration has drafted a proposal for the re- construction of the present station at Chapel, in order to meet urgent needs.

After last year's : Sino-Japanese! The programme of agricultural hostilities at Shanghai, it was. relief through water conservancy planned to build a new station at in Kiangsu, undertaken by the Chenju to replace the present one Provincial Department of Recons at Chapei, but owing to financial truction, has proved a signal suc difficulties, this plan has had to be cess. Of the 6 districts (hsien) in abandoned. This change of pro- the province, 57 have been carrying gramme necessitates extensive re- out this programme, and 384 pairs and additions to the present waterways have been dredged aver ructure, and tenders will be in- total length of 4,377 kilometres, vited shortly. What is left of the and more than 2,440 square kilome ground floor will be completely re- tres of farmland have been benefit paired and renovated, and an up- per floor built to cover a portion The programme provides for the of the entire length of the build- use of labour contributed by farming. A ere, who undertake dredging The upper rooms will be occu- operations, during periods between pied by the Traffic Department, the aclite seasons in the fields This ground floor being used as public keeps the farmers busy upon pro waiting-rooms. The repairs will jects for their own benent, while cost about 840,000, and, tentativa eliminating the inge expenditure plans provide that the renovated which would be entailed for hired structure shall be completed in two labour.

month

ed.

in.

The

i

In order to obtain the data taken by Messre. The Telegraph promptly for broadcasting, the Construction and Maintenance Commission proposes to solicit the Company, who will lay the cable co-operation of the local authori neross the Straits of Dover by means lies, and suggests the installation of their CS. Dominia. It is an of radio stations at Nanking, Anticipated that the cable will be king, Kiukiang, Hankow, Yochow, completely installed by about the Tchang and Chungking.

|end" of August.--Engineering--

We have been appointed Distributor for

KELVINATOR

We have a Service Day and Night. This Service can also take care of all makes of Electric Refrigerators. We carry stock of Parts and Gas..

Office..

4th floor, King's Building. Tel. No 23743. Works, 449 and 461, Lockhart Road. Tel. No. 23504. DOMESTIC ENGINEERS ENGINEER CONTRACTORS.

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