September 27, 1918.

THE COLLIERY GUARDIAN.

637

Lost Power Recovered

and

I 5°/° Coal Saving Effected

by

A lien Piston Pjngs

We have the testimony of users to confirm the accuracy of the above statement.
If you want proof we will furnish it upon receipt of your request. In fact, we
want the opportunity to furnish you with the experience of others; therefore
solicit your enquiry. May we have it ?

ALLEN

FRICTION LESS

ROD

PACKINGS

GIVE EQUALLY
SATISFACTORY
RESULTS.

ALLEN & SIMMONDS, LTD. X°ENAEN= READING

SUPREME

For Pistons and Piston Valves
of all types of Reciprocating
Engines, Pumps, Air Com-
pressors, Turbine Control
Valves, and Internal Com-
bustion Engines, etc.

PISTON RINGS

give perfect security against loss of power, because they are practically

absolutely continuous steam-tight contact with the cylinder wall with the

lightest rubbing surface. In addition to saving 15% of the coal bill,
ALLEN rings reduce wear and tear to the lowest point.

AUTOMATIC DUMPING WITH MONOCABLE SYSTEM.





ROPEWAYS LIMITED,

2, Eldon Street, South Place, London, E.C. 2.

IIIIIIIIIIIIIIIIIIIIIIIIIHI CONSTRUCTORS OF llllllllllllllllllllllllllll

Aerial Ropeways

On the “ ROE ” Systems.

FOR the transport of all classes of
material over any ground, and
for the formation of dumps, spoil banks,
&c. Installations at present in opera-
tion with carrying capacities of 200
tons per hour and lengths of 30 miles.

Telephone—12780 Central.	Telegrams—“Ropeways, London”

AUTOMATIC DUMPING WITH BICABLE SYSTEM.

WK



TURBON.

The LATEST THING in FANS.

Equally suitable for Mina Ventilation, forced and induced
draught, or any other purpose.

Great strength, simplicity and silence.

Highest efficiency. Perfect balance at all speeds.

Suitable for all pressures.

Resists high temperatures without distortion.

No rivets in blades.

Manufactured by THE WADDLE PATENT FAN CO. LTD.,

FOR THE ———

TURBON PATENT FAN CO. LTD.,

LONDON Address—	T" T K	T" ’V

34, VftotowMLas Btaeodi, S.W. 1. I H W Fd l.J ■ J JL •

nOIEEIll 1111 I Q For Producing
unirrin biillo stonedust.

No. 6 REPORT OF THE EXPLOSIONS IN MINES COMMITTEE,
whilst recommending a minimum of 50 °/o passing a 200 x 200 sieve, says
emphatically“ THE FINER THE DUST THE BETTER," con-
sequently, STONEDUST PRODUCED BY THE GRIFFIN HULL
SYSTEM IS THE MOST EFFICACIOUS PRODUCTION FOR

THE PURPOSE, SEEING IT PREPARES:—

Percentage Horse
Output per hour Passing Power
200 x 200 Sieve Required
Dust from South Wales Shale—	1 to U tons upwards 83 °/o	25

Dust from Yorkshire & other Shale—1 to li tons upwards 87 °/o	25

No other System of Pulverizing can approach the
GRIFFIN & GIANT GRIFFIN MILL
for Low Cost of Grinding and Fineness of Product.

--------- FOR FULL PARTICULARS, APPLY -

BRADLEY PULVERIZER C?

37, Walbrook, LONDON, E.0.4.