September 11, 1914.

THE COLLIERY GUARDIAN.

561

“BITUMASTIC”
(BRAND)
SOLUTION

JS UNEQUALLED AS A PROTECTIVE
COATING FOR STEELWORK.

“BITUMASTIC” is supplied ready for use, and can be easily
applied by unskilled labour.

“ BITUMASTIC ” is unaffected by Chemical Fumes, Atmospheric Changes, &c.

Write now for full particulars to sole manufacturers—

WAILES, DOVE & CO. LTD.,

NEWCASTLE-ON-TYNE.

Also at LONDON, LIVERPOOL. MANCHESTER,	Telegrams—

GLASGOW, CARDIFF, BIRMINGHAM, LEEDS, &c	“ Bitumastic.”

“VALOR” OIL CABINETS.

k’I

U.S

Price from 39/- to 120/-



You will obtain, by using the “ VALOR ” Oil Storage
Cabinet, the most economical, cleanly, and the only perfect
system of storing ALL KINDS of oil for daily use.

The quantity of oil lost in leakage from barrels on tap
is considerable, and greatly increases the risk of fire. The
saving of this leakage will pay for the Cabinet in a short
time and also obviate any danger.

Taps in barrels or tanks are often left running, and
measures overflow—-any overflow runs back into the well
of the Cabinet.

Capacity 50 30 20	12	6	gallons.

Price	491- 431- 401- 331- 281- each.

THE MONEY YOU WASTE every
week through not filtering your dirty
oil would soon pay for the “Valor”
Patent Oil Filter —AND LEAVE A
HANDSOME PROFIT BESIDES

Full Descriptive Lists will be sent on application to

THE VALOR GO. LTD.,

Rocky Lane, Aston Cross,

BIRMINGHAM.

Price 3s. 6d. post free.

A Practical Handbook for Colliery Electricians.

Electric Circuit Problems

in Mines and Factories.

— BY —

ELL15 H. CRAPPER, B.Eng., M.I.E.E.,

Head of the Department of Electrical Engineering at the Univertity of Sheffield

THE COLLIERY GUARDIAN CO. LTD.

30 & 31, Furnival Street, Holborn, London, E.C,

the

SOCIETE de FONCAGE de

PU1TS FRANCO - BELGE.

" CAPITAL 1.350,000 fess.	"

undertakes Prospecting', Pit Sinking, Repairing-
Shaft Linings, and Tunnelling-.

A Special Feature is made of s—

Shaft Sinking by a patented process of percussion
drilling combined with the injection of heavy
liquid ; also of Hardening and Drying Water-
bearing Strata by the freezing process and by the
Portier and Saclier Processes (Injection of Cement
under Pressure).

Up-to-date Processes & Plant. Numerous Installations.

MEAD OFFICES :

Bvd. du Nord (40, Rue de Malines), BRUSSELS.

Telephone—3415 A Brussels.	Telegraphic Address—Foncage, Bruxelles.

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality

GOAL SCREENING & CONVEYING.

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.

CONSIDERABLY OVER

100 PLANTS ss

Estimates and Designs on application.

Agent for South Wales: A. LEIGHTON STEVENS, 16, Fields Road, Newport, Mon.

WORK IN
BRITAIN
COLONIES.

(--------1 f---------T (--------T (-----------T (-------1 f---------1	1	1

I JI JI JI JI JI JI JI	JI

PATENT

Sheltered Seat Trycock

/ ' .-.nr"y-.	- For  

»==	WATER GAUGES.

Fig. 6685.

ADVANTAGES

NO ASBESTOS PACKING
TROUBLES.

No plugs to work loose
and leave the packing faces,
causing cutting and leakage.

No circular action to cause
grooving.

Easy method of operating,
as there is no packing fric-
tion to overcome.

Is not affected by expan-
sion.

Large outlet for discharge
of sediment, &c.

Self Cleansing.

Main valve opened and
closed at atmospheric pres-
sure, which overcomes the
cutting action of the steam
and water at the point of
opening and closing.

VALVE AND SEAT OF

HOPKINSON’S "PLATNAM”

SPECIFY FIG. 6685
Sent on Approval

METAL

which does not cut and score
like gunmetal & other alloys.

Upward* of SOO ton* of Standard Steel Ca.ting* kept In stock.

We can give Immediate delivery of Iron and fleet valve*.

Illustrated Catalogue Post Free on Application.

J. HOPKINSON & C° LD Huddersfield.

Makers of Patent Safety Boiler Mountings and Valves

For High Pressure Superheated Steam, High-class Exhaust and Water Sluice
Valves for Condensing Plants, &c.. Automatic Exhaust Valves, Reducing
Valves, Steam Traps, &c., &c.

Depots and Showrooms—London, Glasgow, Edinburgh, Cardiff.
Oldham, Blackpool, Paris & St. Petersburg.

No. 275.