May 3, 1918.

THE COLLIERY GUARDIAN.

885

By Tests The Best

“SINGLE HOOD”

RESULT OF LATEST TRIAL

U7 C0AL £ IQ0/
/o SAVED OG I  /o

INCREASE
IN
EVAPORATION

“PERFECTA” BOILER CIRCULATOR Ltd., 39, Victoria Street, LONDON, S.W. 1.

Telephone: No. 4800 (5 Lines).

Telegrams : “ MOTOR.”

DAVY BROS. LTD.,

SHEFFIELD.

ft

Highest Glass

Lancashire Boilers

FLAT OR DISHED ENDS.

Any Size or Pressure.

BLAKE VERTICAL MULTITUBULAR BUILERS, THE
BEST WASTE-HEAT BOILER ON THE MARKET.

HIGH-SPEED

Steam-Hydraulic, Forging, Bending,

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