February 27, 1914.

THE COLLIERY GUARDIAN.

453

PATENT
“BITUMASTIC”
SOLUTION

IS
THE IDEAL PRESERVATIVE FOR ALL
IRONWORK.

Owing to its greater covering capacity and superior lasting
qualities it is cheaper in the long run than ordinary paint.

Descriptive Booklet “L” from Patentees and Sole Manufacturers:—

WAI LES, DOVE & Co. Ld., NEWCASTLE -OH-TYNE.

Tel. 4637 CENTRAL.	Telegrams “BITUMASTIC.”

CORES! CORES! CORES! CORES!

THE

NEW CALYX DRILL & BORING C° LD

120, East Ferry Poad. Millwall, LONDON, E.

1^'
pi

BORING FOR COAL AND
MINERAL PROSPECTING,
ARTESIAN WELLS, &c.

LARGE CORES A SPECIALITY.

Patent Appliances for ensuring
the verticality of bores.

CONTRACTS COMPLETED
TO DATE-

60,000 ft., from 500 to 3,600 ft.

Core of 8 in. diameter has been
produced at a depth of 3,000 ft.
by this system.

Estimates given for any depth
or size.

Complete Drilling Outfits Supplied
for Foreign Contracts.



PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality

GOAL SCREENING & CONVEYING.

% v

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.

CONSIDERABLY OVER

100 PLANTS H

Estimates and Designs on application.

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

WORK IN
BRITAIN
COLONIES,

Brussels Exhibition : “ Grand Prix:”

Roubaix Exhibition, 1911: “Grand Prix.”

Walter Scott Ltd.

Leeds,	LEEDS STEEL WORKS.	England.

MANUFACTURERS OF

BRITISH STANDARD ROLLED STEEL JOISTS, CHANNELS,
TRAMRAILS AND PERMANENT WAY RAILS, Ac.

Example of Win, x 6in. 421b. R.S Joists curved for Framework to Roadway, j

Pit Head Frame,
k Erected in Works
gfo, for inspection.

\ I

V I

V ® a

X- ® ®,

M / ®

F J *

ROLLED STEEL JOISTS for PIT PROPS,
FRAMEWORK TO ROADWAYS, Ac.

STRUCTURAL STEELWORK FOR BUILDINGS, &c.

Mild Steel Blooms, Billets, Slabs, Tinbars, Rounds & Flats.

Rolls cut for Special Sections and to approved quantities.

Books of Sections and other information on application.

NSON

l JI JI	J

f If If 11	1

PATENT

Sheltered Seat Trygock

-- 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.

SPECIFY FIG. 6685.

Sent on Approval

VALVE AND SEAT OF

HOPKINSON’S “PLATNAM”

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

Upwards or 500 ton* of Standard Steel Castings Kept In stocK.

We can give immediate delivery of iron and steel valves

Write for illustrated specifications & catalogue 660, 4th ed., post free.

J. HOPKINSON & G9 L9 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.
No 2 5. Oldham. Blackpool, Paris & St. Petersburg.