March 27, 1914.

THE COLLIERY GUARDIAN.

671

THE RECORD

UNDERCUTTING.

•3--W

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-i

ii 4

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of the patent

HARDY PUNCHER

latest model

(made November 9th, 1910) in North of
England Colliery (in 3 ft. scam)
air pressure only 45-50 lbs.

per square inch is

mins.

GUTTING TIME.

The maximum cutting speed attained by our machine was

180 SQ. FT. PER HOUR! ’ ! -*•

This performance is far ahead
of that accomplished in the same
seam by makers’ experts operating
new machines of other makes.

These machines are sent on
trial against any other type.

SHEARING.

■ W,r.



THE HARDT PATENT PICK CO. LTD.

Sheffield, ENGLAND.