December 3, 1915.

THE COLLIERY GUARDIAN

1127

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality—

COAL SCREENING t CONVEYING

To Colliery Proprietors,
IMPORTANT	Engineers and

1,11	Contractors, &c.

To secure dependable winding and absolute
safety, all gear brakes should be fitted with
Cresswells’ “ CHEKKO ” Semi-metallic Asbestos
Brake or Clutch Linings.

Their grip is firm as a rock, yet responsive
and pliant as a hand grasp. “ CHEKKO ” provides
instant and perfect retardation at all speeds and
under all loads. “CHEKKO’’ is a great precaution
against overwinding.

We make no brakes of cotton fabrics or other
than of pure Asbestos.

“ CHEKKO ” Brake Linings easily outlast
many times all others, and are, therefore, not only
the best in quality, but also far the cheapest.

Write for Samples, Diagrams and Prices, to :

CRESSWELLS’ Limited,

Asbestos Spinners & Manufacturers,

Wellington Mills, BRADFORD (Yorks).

Telegrams: “ Asbestos, Bradford ” Phone: 950 Bradford.

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SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.











CONSIDERABLY OVER

100 PLANTS

HOW AT WORK IH
GREAT BRITAIN
AND THE COLONIES.

QUALITY m SWITCH GEAR.

Estimates and Designs on application.

Agent for South Wales: A. LEIGHTON STEVENS, 15, Fields Road, Newport, Mon.

LIQUID
SWITCH
GEAR
of
HIGH-
CLASS
MAKE
and
GOOD
DESIGN.

L JHKp

■I-

■ ..A-

Issi

	T <
I 1 ■  1 : L'	

WRITE

for

LIST

No. 60

with

PRICES

and

OUTPUTS

J. H. HOLMES & CO., Newcastle-on-Tyne.

MECHANICAL ENGINEERING OF COLLIERIES. T. c. peters

Vol. I., Price ais. net (By post 21s. 8d?.	Vol. II., Price ios. 6d. net (By post Ils.).

SUPPLEMENTARY VOL.—Price ios. 6d. net (By post Ils.).

THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Fnrnival Street, Holborn, London, E.C.

A CHEAP YET MOST
EFFICIENT INSULATOR
AGAINST HEAT RADIATION

az c jy v a M ’ Q specially

Em 11 I B 12 ’W' COMPOUNDED

“KISOL”

(REGISTERED)

CEMENT

Sample 1 cwt. bag sent carriage paid to any address for 7s. 6d.

ASK FOR “HINTS" ON COVERING
STEAM PIPES, BOILERS, &c. . .

---Post Free on Application. -

WM. KENYON & SONS Ltd., dukinfiei d, nr. Manchester.

N



PATENT

SHELTERED SEAT TRYCOCK

SPECIFY FIG. 6685

Sent on Approval.

---- For -----

WATER GAUGES.

Fig. 6 68 5.

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”

METAL,

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

Upward* of SOO ton* of Standard Steel Catting* kept in Stock.

We can give immediate delivery of iron and steel valves.

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 & Petrograd.

No. 342.