1923-01-15 — Page 2

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THE - HONGKONG DAILY FRESS, MONDAY, JANUARY 151H, 1928.

Saves over 50% in Power Costs and Time compared with Air Power

SELF

DORMAN CONTAINED

DUSTLESS WAVE POWER ROCK DRILL

GENERATOR CAN BE 'WORKED CLOSE UP TO ROCK FACE. INDEPENDENT and Automatically synchronised Rotation of the Drill Steels on the return stroke of the Hammer. No Splines. used. Any Drill Steel-used from 1-in. to 4-in. bits with one chuck only. The short stroke and high frequency make for ease in collaring holes as Wave Power impulses arrive continuously at all lengths of stroke from zero.

#1

The running Water conveying the Power converts wil the rock dakrin into liquid sludge. Controlled by Drill Operator. Keeps Drill Cool. :Dit always operates on the virgin cock fase

11

}

WAVE POWER COSTS compared with COMPRESSED AIR POWER COSTS

Using Electricity as the motive Power at 3d. per unit, Wave Power shows a Saving of the Fower Costs alone of approximately 18/- per 100 ri. when horizontally drilling short holes (4 ft. deep' With deeper holes (20 ft, deep) and fewer changes of drill bits Wave Power would show greater, savings of the power costs than 16 for each 100 ft. drilled.

Wet Drilling without

Increased

Equipment

་་་

or Power Costs

DOWN HOLES drilled by single plant to a depth of 20ft. at Double the Speed of a Steam

Driven Piston Drill

PORTABLE WA

TRANSMISSION PLANT

Will Drill

and Clear

20ft. holes

PURCHASED BY THE BOMBAY MUNICIPALITY."-

1J

Can be worked by Unskilled Labour

WORKS THREE DRILLS Simultaneously or Separately.

A Three Drill Self-contained Wave Power Plant is permanently fixed on a Steel Frame Trolley to run on à 2 ft. 6 inch gauge railway, and consists of a 4 cylinder Dorman Petrol Engine, 36 R.A.C. rating, coupled to a Wave Generator (Fatented) through an ordinary goat-box- and clutch. Can be designed for Engine, under its own Power, to movs the complete unit any distance. Rails not necessary.

THREE Cradle mounted Dustless Rock. Drills, can" be" worked simultanepůsly or,iatermittently, sach on a soparata Pipe Line at a

... length of One Bundred and Thirty foot each drill.

Or, Two Cradle mounted Dustless Rock Drills can be worked simultaneously or intermittently, each on a separate Pipo Ling at a

length of Two Hundred and Fifty fees sach drill.

Or, One Cradle mounted Dustless Rock Drill can be worked at a single pipe line length of Five Hundred feat.

Several separato nine lines, of 500 ft. each can be in economic usa serving in rotation the several districts of the Quarry. One Drill continuously at work while the other rock faces are being cleared..

The Power Input through Generator instantaneously and setomatically adjusts itself to the varying working load to correspond with the number of Dustless Rock Drills being operated at any one time. Immediately one or more drills are shut off or temporarily stopped, the Power Input automatically reduces itself to the minimum power demanded. There is no heavy idle load.

The Dorman" Engine is a standard design with all working parts standardised and interchangeable and giving ample reserve power. If necessary can be adapted to rua en Paraffin. The Oil Lubrication of Engine and Wave Generator is automatic. The complets Genemtor Plant can be left unattended for long working periods. The Plant can be worked by unskilled labour. The working pressures are within perfectly safe limits. Wave Power is transmitted through "Flexstel"—a Patented Flexible Steel Pipe Line tested hydraulically up to 9 tous pressure per square inch. Wave Power can be transmitted through permanently £xed plain piping. The complete equipment is made to withstand the roughest usages of practical mining,

There are no Mechanical Springs in the Equipment as the basic scientific principle of Wave Transmission, riz, the Storage of Baorgy in fluids, is practically applied. A distinct feature of the Dustless Rock Brill is the independent automatically synchronised rotation of the Drill Steels on the return stroke of the Bammer. No splines used. Any ordinary standard Drill Steels can be used with any Wave Plant. The Cradle is made to suif' standard riga,

Water-the medium for carrying the

the Wave Power-is continuously passed under pressure down the centre of the Drill Steel to the drill point, and this supply can be controlled and varied by the Operator as he works the Drill. The running water helps to keep the Drill cool. The prompt and continuous clearance of debris aliminates the cushioning effect associated with air drilling, and the natural result is the drilling speed of Wave Powercorrespondingly increases. The drill always works on the virgin face of the rok. Dry drilling, if requireda can be done on closed Water Pipe Line, and does not involve any serious or expensive alterations in the Wave Equipment

Wave Power reliably noruren dusite is rock drilltag without extra water cost. With certainty it eliminates-all dust, and effectually overcomes the cause-dry dust-ibai creates miner's Fathisis-the dreaded disease peculiar to the Mining Industry, Actual comparail e drliling results on hardest toralah Granite Show a saving in power and time of more than 36), OTGE compressed alr."On the basis of egnal power consumption the drilling results by Wave Power are more than double that by compressed air.

Wave Plants work with say ordinary Drill, Steels varying in diameter from 1 inch up to 4 Inches at 2,480 blows per minute or whatever number of blows conditions require. One Chuck is only necessary for the whole range of Drill Steels sizes named,

Regular working Drilling speeds in hardest Cornish Granite as follows, In quarries, other than Granite these speeds are exceeded.

Diameter of MIL." Kate of penetracion.

z'ixx. ger siste.

i

3 18. 2) lo.

Diameter of Bit..

Bare of penetration.

10 las, per minute.

14

12

Where the drilling hole traverses fissures or joint planes or drilling near a faulted zone there is reduced jambing of Ways driven drili.

لاد

W. H. DORMAN & CO.,

LTD., STAFFORD.

וי

Head Offlón mand Works:

STAFFORD, ENGLAND,

"Flete!" is a Registered

Trade Mark

The Borderla a reproductios

of Fleetal

"Flexstel Patented in the Chic

Countries of the World.

This Border is a reproduction of Planta),

"Once a user of our Paints, always a user of our Paints," in the

e rule rather than the exception. Our knowledge and experience of the local condi tions enable us to offer the very best Ready Mixed Paints for all general purposes.

Paints

Mixed Ready for Use.

ENGLISH: MADE.

Tech Gray.

Luna Grey Dart Grma

·Paikið in°7-13. tina with handia, and i-am. Dram Stocked in Hongkong....:

Pen Grusa Black

... Liga Druh AN

Carlos Rod

Dark Royal Bloo Pala Perpla Brown. Light Angera Bing ––– Light Stone Calar Alen Almeladam Palut la. 1-plast Then,

Send for Tist Card and Prices to

* ཚ

Celer

Every White

Land Color:

Wilkinson, Heywood & Clark, Limited,

Compeebid in the United Kingdom)

ANDRA BUILDINGS, HONGKONG.

London Orfies WY. BRIDE'S HOUSE, SALISBURY SQ.M.E.4

FOR HEADACHES

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PEKING TO CALCUTTA VIA

LHASSA.

GENERAL PEREIRA'S JOURNEY.

ENORMOUS MOUNTAIN,

"THROUGH BRIGAND-INFESTED TRACTS OF OKINA.

THE GALAY TALK. The great trok started last May. Th first ning days were not unpleasant going General Pereira med a number of nomads. The track, sulted only to pack animals, lay across grassland. Bu on the tenth ho left the nomads behind, him and for the next seven or eight day saw not a tree or a blade of grass, not passed another human being. The mules General Pereira, who set out to journey suffered badly, five of the eighteen dying. from Peking to Calicutta vid Lhasa. But they were lucky later to meet a large recently arrived in Caloutta, having com Tibatan caravan from whom they bought plota a 7,000 miles journey, the greater some yaks which are much hardiez part of which was done on foot, in just animals, and can stand the cold much bet under two years a

ter. The remaining mules wore by this General Pereira's narrative of the time not only unable to carry any loads, journey is told below in an interview but even without loads they were slower Bocorded to a representative of the Cal than the burdened yake; and a halt bad cutta Englishman.

to be called every four or five days in order to rent the mules.

North-eastern Tibet is a region of tra mendoas winda,:

The weather is most changeable At one minute the sun may be shining, and two minutes later it may be pouring with hail. A quarter of an hour later may be snow, and still a quar ter of an hour later most beautiful sun- ahire.

H

A mountain in Eastern Tibet, in a bend of the Yellow river, said General Pereira "was one of the most wonderful I have DEEN. It ross to a great height and since it has not been scientifically measured, it may be any height at all."

.

A WONDROUS MOUNTAIN.

Brigadier-General George Pereira, C.B., who set out to journey from Pking to Calcutta by way of Lhasa, arrived to Calcutta a few days ago completing a Usually there was heavy rain at night journey that has never before been done, and the nights were most bitterly colu. as far as is klown, by any mau, and cer- it was quite pleasant in the middle. “of . tainly never before by any white man, the day if there was no storm. The Innd” The journey was one of over 7,000 miles lies in the form of a great plain, spotted General Pereira traversed more than half with a few bills. There are no trees at this on foot and the strain has been wall. The height was well above 19,000 severe that he is now in a nursing home fest. In fact during the whole of his in Calcutta. There are clots of blood at journey across Tibet General Parsita the back of his left call and he thinks he was at a height of over 12,000 except for. will have to remain in bed for two or two descents to 10,000 when he entered. three weeks. This has altered his plans valleys. To the east during this great somewhat for General Pereira had in journey General Pereira saw (it was. tended to proceed to Delhi soon after his visible for many days, and could be seen arrival, and next journey to Burma, for miles around) à most wondrons moun. An Englishman representative, visiting tain, the Amne-machin, commonly mark- General Pareira, found him in bed busy in maps as a range but it is only a with maps.

The General said his foot solitary mountain. It" lay in a bend was frequently painful during the jour of the Yellow river and ross to a great ney but the pain was nerer of a kind height. It was completely covered with -to prevent biga from continuing his now. It may be any height, it may pos journey. On arrival at Cantck, how aibly even be the highest mountain in the ever, be had to take to his bed. world for the height has never, boen journey from Gantok to Calcutta

scientifically measured. made by motorcar and train.

* THE START.

41

The was

After this appalling journey Acroar North-eastern Tibet General Pereira say.. it was a relief to get into Jaykundo where be found a few shops. Here he mek. “ Madame Neel, a French Backdhist lady, who was the only European he met dar-. ing his entire journey acroes Tibet down

General Pereira left Peking in January 1001. He knows Peking very well, having been Military Attaché at the Embassy there for several years preceding the Great War. He had also been attached to Gyantze, which is a British trade to & Chinese regiment prior to 1900 and centre. served in China in 1900, being slightly wounded in the campaign.

After crowing the Yang-tze-Kinng the country was different, The valleys were From Peking to Lhasa it is 9,000 miles clothed with trees. Barley was în cul- to the crow flies. But Göneral Pereira tivation. General Pereira halted for could not journey in so direct à manner. | forty days at Chambdo' awaiting perin's- He travelled by train to Tientsin, and son to enter Chassa, for the journey for - on to Ti-yuen, and then travelled by cart the messenger was one of 700 miles each to Shansi. After crossing the Wang-he way.

he travelled" partly by train to Loyang This was a year of record floods in where he met General Wu-pei-fu who at Tibet, and some of the very few bridges the time of the meeting (last year) was there are across rivere suffered. Genera! the centre of a big movement in China Pereira found the bridge across the Sal- General Pereira, visited Hanfu, the old ween in a damaged state and bad to pro- capital of China, and climbed the Hwa- ceed westwards by another route, crossing shan, which is eas of the five sacred the river in leather coricles, which is the mountains of China. The climb was method employed for crossing most rivery appalling. The mountain consists of in Tibet, over the broader ones which great rocks, all twisted and steep. Zigare 60 to 100 yards wide. South-east is, zag paths wind upward: The paths are a jumble of mountains, and valleys. The cat in the rocks in the form of irre catire going was up and down; there wa gular steps some of which are afoot or not a fat spot. two away from each other, and at the sides of these paths are precipitious drops At Lhasa General Pereira was made of 2,000 and wore fect. The climb bad most welcome. He arrived there inse

AT LHASSA..

+1

to be made by using chahs for hauling October and stayed in Lhases for about oneself up. On the rock numerous small ten days as the guest of Thsarong Shap, temples are scattered." It was one of the Commander-in-Chief of the Tibeta of

The Commander-in-Chief is young man about 38 years of age.

Ha

the steepest-limbe, I've had soil-firmy. eral Pereira, it afforded, though, "most magnificent view."

BRIGAND-INFESTED PROVINCE..

..

is learning English and has a daughter in school in Durjeeling. He was mocat General Pereira next entered the friendly in his welcome of General notorious province of Shensi, which with Pereira and made him his guest, provid- its neighbouring province of Szechuan, ing him with a villa in the best residen- are the two most brigand-infested protial suburb of Lhassa. In this suburb, vinces of China. In one of these pro-which is the western suburb, there are in vinces there are reported to be 50,000 all six or seven villas, each situated ju brigards, Just before General Pereira most pleasant ground, One of these villag went through some briganda captured a is occupied by the Dalai Lama, who does missionary. These provinces are in a not now live in the Potala.

The only state of utter chaos. They do not re-modern road in Tibet runs from the cognise the authority of Peking. It is Potala to this suburb. practically impossible to get through them General Percira said he was made most... unless you make some arrangement with welcome everywhere he went in Tibet. I the briganda, General Pereira visited the every village in which he rested depuia- magistrate who discussed the matter with tions of villagers led by the headman, the brigands and was able to proceed un- waited on him with gifta, bringing him molested Chungtu was about the worst vegetables and meat in such quantities spot. Just beyond Chungtu lies a range of that his room, was converted into s mountains which General Pereira visited Covent Garden. for some shooting. He found delightful

From Lhasse- the journey to Calcutta sport, but it was bitterly cold, and he lay along a fairly familiar route. At had his foot frost-bitten and was laid ap Gyantzo and at Yatung there are British for a month.

trade agents. At Gantok, the capital of

A journey was next made into T Sikkim, there is д British Resident. chienlu, a region of China which is full of From the Residency, General Pereira Tibetan tribes.

General Pereira from came by way of Kalimpong on to Cal- here worked his way northwards through cutba country mostly inhabited by Tibetan General Pereira is now. in his 58th year. tribes and so up the Min river into Kwan. He was in the Grenadier Guards and saw Here he met the Prince-of-Choui,arrice both in the South Africa who has a vast tract of territory ander European waIA

su

and

his jurisdiction and is the biggest Tibe

tan Prince in the province. The Prince

is an old friend of General Pereira's and

FIEUZAL GLASSES

the General spent a very pleasant time Out of doors there is nothing so roetfal. with him shooting. From here the Gen

eral went on to Bimingfu, which is in. and comfortable for the eyes as the light habited by a great many Mahomedans reflected from green Bolds sad trees, the under Mo-cho (Ma is the prefix of all absorption of the ultra-violet and orange Mahomedan families in "Kwanzu). The

Mahomedans don't hit it off with their rays by the oflorophyll of the leaves; neighbours and there are endless brawls. henge the introduction of Fietzal Glass, General Pereira proceeded to Tangar, yellowish green in colour, which is pro...... which is the starting point of all cara duced in several shades, and lenses made vans across Tibet. At Tangar, General

Pereira engaged interpreters for the of this may be worn se a protection by great journey, bought 18 mules and five over-sensitive eyes where it is desirable horses, & quantity of supplies, had to to tone down excessive light and glare, make his own saddles and then set out Fiental lenses of any prescription is for the great trek across north-eastern

Tibet. Targar is like any other caravan either regular or Toric forms are mann starting place. General Pereira met fastared by the Hongkong Optical Co., Home Flemish missionaries here who were successors to Clark & Do., Manufacturing very helpful. Here he also met Bören.

sen, the Danish traveller, who had been and Refracting Opticians, 63, Queen's refused permission to visit Lhasa, Road Contral, --ADTZ.