116

THE COLLIERY GUARDIAN.

January 19, 1917.

Telephone—No. 7.

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TWO 'A

GLASSES V

E. THOMAS’ PATENT
DOUBLE GLASS LAMP,
Inner glass with combustion tube
aperture supported from below.

APPROVED

Flame Safety Lamps.

To meet the requirements of the
New Mines Act, 1911.

Cambrian Lamps are made for all Mining
purposes, and are fitted with Magnetic, Pneu-
matic, or Lead Locks, Double Gauzes, Com-
bustion Tubes, and Electric Ignition.

Our Double Glass Lamp gives a greater Candle
Power than any Miner’s Electric Lamp.

Makers of the new

“ MAGNET ”

Underground Relighter.

E. THOMAS & WILLIAMS

LIMITED,
Cambrian Miner’s Safety Lamp Works,

Telegrams—“ Lamps,” Abkrdakk.

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Ma.

Wi

Giving a bright light at the end of
the shift = 11 G.P.

FIRST IN 1870.

ABERDARE.

STILL LEADING.

NO SUSPICION

between Weighmen.

Denison’s Patent Mercury Resistance

PIT BANK

WEIGHING MACHINE.

Electric Signalling with Bare Wires

DAVIS-MACDONALD
SOLENOID BELL
TREMULOUS AC^jBN).

Patent.

GONG REMOVED.

COMPLETE BELL.

I PATENT ' I

DERBY Zt LONDON „i

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Quick. Accurate. Durable.
NO WATER.
Pointer Shadowless.

SAMI DENISON & SON L,D

Furlea,

With this Bell there is NO POSSIBILITY OF A SPARK.

SUITABLE FOR A.C. OR D.C.

Davis’s Relays with Special Winding, overcoming sparking on the line
and in the Relay.

Davis=Fryar Mechano=EIectric Signalling.

Patent.

The Davis-Fryar System dispenses entirely with bare wires and is in
successful operation throughout the country.

SEND FOR GIST 41/H.O.S.

JOHN DAVIS & SON (DERBY) LTD.,

ALL SAINTS WORKS, DERBY, & wVstvStTr.sts:w.