April 18, 1913.

THE COLLIERY GUARDIAN.

787

Economic Steam-Raising in Steam Collieries.

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•‘Bennis” Machine Stokers are essential to Cheap Steam
Raising in Collieries.



There is no colliery that to-day can afford to hand-fire its
boilers, or to instal inefficient machine-stokers !

A great deal is essential to EFFICIENCY in a mechanical
stoker. It must be of adequate design for the work it has to do.
It is a poor consolation that it is a ‘ good ’ stoker if its ‘ goodness ’
is not adequate to its particular work. A round peg may be a
‘ good ’ peg but it is useless in a ‘ square ’ hole.

The stoker that is guaranteed to do its work efficiently in steam
collieries is the “ Bennis ” Stoker and Self-cleaning Compressed Air
Furnace. There is no blocking of the air-spaces with clinker or
ash in the “ Bennis ” machine. It keeps its own bars clean and
ensures strong, clear fires, consuming its own smoke before it can
reach the chimney.

The “ Bennis ” machine is doing first-rate work in the leading
steam collieries in South Wales, Yorkshire and elsewhere, and
rapidly pays for itself and yields steady dividends.

Write for “ IF hen Machine-stoking Pays in Collieries ” pamphlets to Ed. Bennis & Co. Ltd.,
Little Hulton, Bolton; or 28, Victoria Street, London, S.W.

WELDED TUBES
up to 36 in. diameter, for
—- MINING, GAS AND WATER. ---

EDWIN LEWIS & SONS, WOLVERHAMPTON.

Telegrams—“ Lewis, Wolverhampton.”	London Address—143, Cannon Street, E.C.

Telephone—No. 15 Wolverhampton.	Liverpool Warehouse—58, South John Street,

GREAT

MINING
MACHINERY

EXHIBITION.

Previous Exhibitions
under same management
were held at the Royal
Agricultural Hall, 1903,
1904, 190b, and at . .
Olympia in 1908.

Royal Agricultural Hall, London.

Thursday, MAY 29, to Saturday, JUNE 7.

Will be opened by The Rt. Hon. the EARL OF ELLESMERE.

H. GREVILLE MONTGOMERY,	Offices: 43, Essex Street, London.

HUGH C. MONTGOMERY, Directors.	27, Brasenose Street, Manchester.