1919-12-30 — Page 7

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THORNYCROFT

JOHN I THORNICHOFT & Co., Limited,

SairaLDERS AND Enginzzu,

LONDON. SOUTHAMPTON" AND

Shanghai Office:

65 Road.

MARINE MOTORS AND MOTUR BOATS. MOTOR LIGHTING AND PUMPING SETS. SHALLOW DRAFT STEAMERS. THORNYCROFT COL FUEL- SYSTAṀ.

Commercial, High-speed and Pleasure Craft:

THORNYCROFT WATER-TUBE BOILERS. THORNYCROFT MOTOR VEHICLES.

Our Motor Enginer and our Navak", Architoch both Thornycroft experts, no residens in Shanghai, will give attention to all inguines.

Early deliveries can be vanduo 15-bhp. 30bhp, 45-bhp, and 70-bh.p. Kerosene Marine Engines.

Sanitray Goods for

carry

R. K. ROXBURGE,

Manager for China.

[1283

Modern up-to-date

residence, we are factory representatives and

goods. stock of first grade Estimates and cost given for complete modern up-to-date bathroom.

UNION ENGINEERING CO., LTD..

Ground Floor, 13. Chater Road,-

HONGKONG.

GRIPOLY

BELTING

Solid Woven with

Get the most out of your Machinery by using a belt which does not slip or stretch triple-twisted and which grip. A slipping belt in your indestructible your motor-car. Gripoly" has proved it.

edges

factory is as bad as a leaking petrol tank in

self under test to be the most efficient all- round belting. It does not stretch for slipy it resists heat, damp, grease, friction and guide forks as no other belting can. Have the best belting and get the utmost power from your machines.

Let us known pur requirements and we will odvise you as to the best type of "Gripoly!" for your needs.

LEWIS & TYLOR, LTD.,

Grange Mills, CARDIFF, and

51. Graceeburch St., LONDON, E.C.3. England. Agents holding stocke.

APSDRY

FOR MOTOR HOODS

K RHINOHYD

LTRADE MARK) AND THE Exact Materials used by BRITISH WAR OFFICE, for their WATERPROOF COVERS

ALLMOTOR BODY FITTINGS Mette for Lios term 8. JIRITOL, 9′′ Bread Street, Bloomsbury. LONDON, EÑÓLAND,

ONV

COMMERCIAL HOODS

AGRICULTURAL

*SHEETS

MOST DEADLY ENEMY OF SUBMARINES.

PING

SUPPLIES OF RAW M

The Government, early in Octo

employers to consider to what extent Before the Enginearing Section of the it will be posible, in each individual British Association at a recent meeting, case, to spread out the time during which Mr. BF McKay read & paper on "The they own keep their workpeople employed, Parsvane"? He said that, originally de either by working short time or by work- vised and developed by Acting Commaning only a portion of the weak. As tho der Burney & &weapon for astecking method suited to ane industry is not suit ed to another, the Government left the submerged submarines, the paravane bad details of the particular scheme adopted also been successfully, applied by him as to the discretion of employers. almethode of protecting vessels against mines, and of cutting up hostile mise falda by, high-speed vetesia.

The Ministries of Ways and Commun- ications and Labour, according to the Timer are desirous; tant every means

industries

Throughout the war every effort was should be utilized to an liabeck the advies

made to prevent the details of this inven- in operation, and have tion from leaking through to the enemy. and co-operation of various business 1880- Even the word paravano "itaclf was ciations. The Federation of British In- only used in conâdential documents, and dustries has offered the use of the whole the secrets of the device were strictly of its organization to the Government, limited to those who were concerned in and, with the sanction of the Ministry its manufacture or development. In the of Labour, it is setting up in centres all case of the installation for merchant over the country offices and a staff to ascer shipping, whan the same strict contactain the needs of manufacturers in esca could not be exercised aa the Barvice area, and, in co-operation with the trans the word "otter" was used to designate Port authorities, to assist in carrying the device. While it was not claimed out a scheme of meeting urgent require that the secrets of the invention, were un- known to the Germans at the time of the signing of the Armistice, it was at least certain that the enemy had not developed and perfected any methods of preventing ite continued successful use

ments.”

going

la pursuance of these objects the federne tion dispatched telegrams to all members, requesting them to keep their works as long as possible, if necessary economiz ing matarial and fuel by adopting half- time; to inform the headquarters of the federation of their present position in regard to fuel to assist in the admin- istration of the out-of-work donation where unemployment became inevitable; wherever practicable to preserve s cient stock of fuel to supply the domestic preliminary steps, the federation adapted needs of their workmen. After these

country to the purpose of assisting manu its whole organization throughout the fastorers and keeping their works open.

The problem of combating submarines when deeply submerged had not been, he continued, very seriously grappled with previously to the war, and the only device for attacking them was that known as themodified sweep." As this merely consisted of a line of charges towed directly astern, not only was the area swept per vessel small, but the depth reached by the explosive charge was only abut 40ft The obvious defence of an

The district organizations will forma attacked submarine lay in diving, and as complete network throughout all the in- the war progressed the depths which sub dustrial areas, will get into touch as far marines could attain increased, until, tons possible with all manufacturere-whe wards the latter part of 1918, they could safely remain at depths of nearly 500ft.

"THE RAKE,"

ther members of the federation or not- and, having ascertained their needs, will endeavour to arrange for -supplice of material, fuel, or anything else essential to enable them to

carry on For this purpose they will also act in touch with the local authorities espable of helping in any way and in particular with alter- native forms of transport, such as const wise shipping, canals, etc.

Commander Burney realised that the development of the direct attack on sub merged submarines lay, therefore in two directions, first to increase the dangerous ares swept by the explosive charges tower by a vessel, and, secondly, to increase the depth at which those charges could be towed.. It was soon found impossible to

The district organization will also act as tow any form of net at right angles to headquarters, which will act both as a

channels of information to the Landen the course of the ship owing to the great clearing house between the different in- resistance of the water at even moderate dustrial districts and as a means of com apsedi Is a Locordingly decided to manicating difficulties and suggestions to develop a form of "ruke," on the prin- the authorities and Government Depart ciple of a hay-rake. In the early experiments in London capable of dealing with ments a form of rake was devised which them. The Chainbers of Commerce have had four prongs, and which covered alao been invited by the

Government, total width of 150 yards. The charges through their

the Chambers were towed directly over the stern of the Association of central association,

Com of shép at an angle of 45 degrees, and two fur merce, ascertain the

of manu- ther changes ware towed on such besim of facturers, and Mr. E. Marville, M.F.. the vessel, and kept in place by what was the president of the Association, has car termed a surface, torpedoedern, palasized the, members to this effect. - A destroyer, H.MB artif, was Boted mass of information has already been with this device in the middle of 1915, received in response to the telegrams men and was attached to Sir B. X. Tyrwhitt tioned above. This information has been fotilla at Harwich. The principle of the classified and distributed, and steps have device was reported upon favourably by already been taken to remedy many of Admiral Tyrwhitt, but owing to the con- the difficulties raised. siderable weight and complication of the gear, certain modifications soon, suggest ed themselves. After "further experi- upon these" wires. These wires, there mental work the outside charges were fore, formed a wedge kept in place by the eliminated, and the sweep contained only tension produced by the dynamic reac the two charges towed from the stern of tion of the water upon the paravane. the vessel.

Mine-mooring wires which struck this The explosive paravane as it was wedge were deflected away from the ship. finally developed," Mr. McKay said. and passing along the towing wire were "is torpedo-shaped body carrying nanguided into the catter jaws on the bend Its head a large ste3.plane, and near its of the paravane and instantaneously tail horizontal and vertical fine. The severed. The mine-sinser dropped to the place is set at a small angle to the centre bottom of the sea, whilst the mine float- line of the paravane, and is in a Eped to the surface, where it would be sen proximately vertical position when the and destroyed by gunfire. The success of paravane is being towed. The thrust of the protective paravans or otter had been the water on the plane win the yeasel even more striking than that of the ex is in motion carries the paravane away plosiva type Out of just under 200 from the fore and aft centre line of the British war vessels fitted with this de vessel.In this way a spread of sweep, vice, 83. had cut mines, involving a total Le, distance from paravane to paravane, tonnage of over half a million tons, aad af about 200ft, may be obtained The representing a money value of about 60 stability of the paravane is increased by millions sterling Of British merchant the horizontal and vertical fins at the vessels, 2,700 had been atted, but, owing tail, Depth-keeping mechanism is also to less accurate reports being obtained Atted in the tail of the paravane, and from merchant vessels as compared with tends to keep it on a stealy course" warships, the actual resulta were not The explosive paravane Mr. McKay known. If, in comparison with British added, carried a large charge amounting warships, only one-tenth, as many mor in some cases to over 3001b of T.N.T chants vesels, as compared with the The explosive charge could be detonated number fitted, had been saved, the saving hy an electric current which passed to the country in tonnage had probably through a core in the towing wife been much in excess of 100 millions sterl Various methods of detonation autoing could confidently be aserted, matic or deliberate, were arranged. Mr. McKay said, that the Allied coun Safety devices were inserted in the firing tries were indebted to the paravane in circuit so that the paravane could not vention for saking ships and cargoes to be accidentally fired whilst it was on deck the value of approximately £200,000,000, erin the water near the ship. The In addition, the number of lives saved method of attack by the explosive park must be very large figure. In the early vane against a hostile submarine was for days of the German activity in mine the attacking vessel to proceed to the spot where the submarine was last see and there to rake the water with the two paravanes, which would ho towed at depth of perhaps 2001t,

MoKav.

laying, as many as 18 Allied merchant men were sank every month by mines alone. At a later dale, when the mining activity was much more intense, the Allied losses dropped, to a maximum of The success of the explosive paravane three or four per month, and these were had been very remarkable, when it was in every case ships not fitted with the realised that this form of attack was protected gear. There was, ne a matter only used when other methods, such as of fact, no ease on record of a merchant the torpedo, the gun, or the ram, had rip being hit by a mine when towing failed. The only form of attack of the rotter protection...

H lise nature was the depth charge. In The utmost credit, said Mr. MOK comparing the results obtained by the must be given to the inventor Comman paravane with those obtained by the der Barney, not only for his originality depth charge, statistics showed that the of conception, but also for the indomit depth charge destroyed four times able energy be displayed in developing many submarines as the pararane. De the details and in overcoming the many consideration must be given, however, to initial practical difficulties. It had been the fact that depth charges were fitted stated in the July isne of the Journal in 25 times as many vessels, and accord of the United Stater Institate in an HALF A CENTURY REPUTATIONS ingly proportionately to the number of article by Lieutenant Catlin. U.S.N.EF.. PILLS FOR THE vemels fitted the paravane was many that in the early days of the experi MYELISKIDEREK times rubra eficient,

mental work the Admiralty became con- invaluable for dimeve, of these Impariatit organa." PAGES PROTECTIVE PARAVANE

vinced that the device was unworkable Gravel Palm the Back, Gott, Bezmatima, n The action of a protective paravane or CTAERO MURD, CO, HAYANKOOK BOLD, NW. wedge being formed in the front of the friends, however, were convinced of the coase Commander Burney and i his Reading and Writing Booms Bulliard Landa, Badan Depotu Paris, 12 Bu owing vessel Each paravie was towed potenzinliller of the beme, and, without

DARTIGLOWN; Bee Tock, 90, BKMÁR EZKERT. Boom Officers Boom, O.P.O. BockyToronto, Texan, Lang, Amiralla, ELLDI BU from a point as far forward and 14 Tow despairing svept the immediate difficul

Bydney sad Beinbauny Naw Zaizawn Dupe, la

nown as noisible try specially lime wirkland, Christchurch, Dennen, Wading structed steel wire, and the hydroph

trap-Indig B, A. Pam & Co. Calla sta

on the paravade, exarted a heavy

(Continilet at foot 57 nezt columa.

SEAMEN'S INSTITUTE.

11, PRAYA BAST, HONGKONG.

DE.LECLERC'S

MOR the use of all Men of the Mercantile Price Standing Cheushta, or port Eras. Da L other could beat he likened to a brazit and ordered all further work on it to

Marine and H. M. Navy.

Restaurant, Concert Hall, Church

Private Cabing and beds în Dormitories, Motor Launch, Dayspring

160

THEATRE

FINAL - FAREWELL SEASON

Ravusical Comedy

ROLA I

OF EDGAR WARWICK'S Company din

VANITY FAIR

Commencing SATURDAY next, JANUARY 9RD, at 9:15 PM.

Many new and attractive features have been added into the last visit here, and an this will be positively the last appearance of the Company in Hongkong special programmes have been arranged to include many of the most popular items in the repertoire as well as the latest new attractions BOOKING AT MOUTHIE'S. `\

USUAL PRICES

1730

EMPREZA COMERCIAL DO EXTREMO ORIENTE AVENIDA ALMEIDA RIBEIRO NO. 3

ties away, and were thus given a further opportunity of perfecting what has i proved one oë sebe mamarkable usef inventione

MACAU

IMPORTERS OF PORTUGUESE WINES.

A large csigament of the following First-Class Wines has just been landad:

PORTS, CLARETS, RED WINES, PORTUGUESE LIQUORS etc, eta

SPECIAL XMAS OFTER:

No gift is more appreciated than a case of good Port Wines. From Farms · assortment you may select gifts to mek pvory taste at reduced prices for 14 days. only.

FORT WINES. from $20.00 to $40.00 A c298.

• We will and samples. All mquanta will receive our prompt and careful attention.

A large stock of PURE PORTUGUESE OLIVE OIL SAUSAGES, OLIVES, ot. on hand

SHEWAN, TOMES & CO.

MOTOR DEPARTSIENT,

Distributors. far

COLE DODGE. OLDSMOBILE Cars,

FEDERAL Trucks-FISK Tires, HARLEY-DAVIDSON Motorcycles. ARROW, BRENNAN JACOBSEN, MEITZ. RED WING ROBERTS, & VENN- SEVERIN Marlue - enginess

We stock Spare Parts als carry, a complete line of Auto-Accessories and Motorboat Fittings.

Motor Car Storage

Repairs of all descriptions an

Inquires

Callat

No. 7. Russell St.

fan Invited.

Garage

Phoi 6.9.

New Stock

ENGLISH BATHS

Just-Received

at Reduced Prices due to High Exchange,

C. E. WARREN & CO. LTD.

No. 20-32, Des - Vaux Boad, Central,"

TIME

MEANS

will do all

MONEY

Calcula

Work

In a tenth of the time

taken by aay Clerk.

ALEX. ROSS & CO

25, Des Your Road

·1660