May 31, 1918.

THE COLLIERY GUARDIAN.

1085

By Tests The Best

RESULT OF LATEST TRIAL

INCREASE
IN
EVAPORATION

HOOD”

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



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Telephone: No. 4800 (5 Lines).	Telegrams : “ MOTOR.”

DAVY BROS. LTD.,

SHEFFIELD.

ill

Highest Class

Lancashire Boilers

FLAT OR DISHED ENDS.

Any Size or Pressure.

BLAKE VERTICAL MULTITUBULAR BOILERS, THE
REST WASTE-HEAT BOILER ON THE MARKET.

HIGH-SPEED Steam-Hydraulic, Forging, Bending,
Shingling, Shell and Drawing PRESSES