370

THE COLLIERY GUARDIAN.

February 23, 1917.

A Fair Example of Results

1 in 12

Perfectly noiseless in operation.

Write for Latest Illustrated Catalogue on Conveyors.

Most economical in power consumption.

Electric or air-driven.

SHEFFIELD

Telegrams—“Meco,” Sheffield.

Telephone—4530 Central (2 lines).

The Silent Conveyor

(Spence’s Patent).

Length of Face - -

Height of Seam - -

Average Gradient

against load

Average discharge

(5 men) - 60 tons per shift

Average load (input) - 4 B.H.P.

80 yards
2 ft. 9 in.

Positive in action, will convey equally
well uphill or down.

Will take the place of your enlisted men
and will increase tremendously your
output of coal.

■ '-<2

■

s

in the boiler fire is an assurance
to the power user that the maxi-
mum of heat is being obtained
from the fuel. And it is only by
making use of the whole of the
heat energy that he can hope for
economical working.

The boiler fire is the solution of the
economy problem.

But the degree of combustion is dependent
upon either an unreasonably high chimney
or a system of mechanical draught.

Abolish Black Smoke.

There is no surer indication
of wasted fuel than that pre-
sented by the volumes of black
smoke which pour from
factory chimneys. This waste
can be prevented and the
harmful “smoke effects”
abolished by the “ Cyclone ”
Induced Draught Plant.

Meco Belt Conveyor Head, Spiro-turbine Drive.

The Mining Engineering Co.

MECO WORKS, limited

Perfect
Combustion

THE

(yclone

“ Coventry ” Noiseless Chain Drive, motor to lineshaft,
for the repair shop of a Northern Colliery.

• e

530

Induced Draught Plant
guarantees perfect combustion—further-
more, it works independently of the aid of
chimney, and thus makes possible the full
recovery of the waste heat. A chimney relies
upon hot gases for its drawing power—
the “Cyclone” I. D. Plant supplies the
drawing power, and thus frees the waste
heat for useful service.

All the advantages of a good draught—a
hot thick fire and increased evaporation with
the minimum of smoke, fuel economy and
heat recovery, are secured to users of the
“ Cyclone ” Induced Draught Plant.



Our Booklet, 275F, contains facsimiles of
letters from users which prove our claims,
Send for it.

Over thirty years’ experience in the de-
signing and construction of Fans for all
Purposes enables us to give expert and
reliable advice. We will gladly supply
information to prospective clients—free.

|tetihew.s 8 YatcsD

winton,Manchester

Turning movement, even, steady turning movement
free from slip and jar is what your lineshafts require
if the output of your machines is to be maintained.

This result can only be obtained by the use of Chain
drives. If you are using Chain drives you are
aware of this ; if you are not, instal a Chain drive
in competition with a Belt drive and note results.
You will be surprised.

“ The COVENTRY ” CHAIN co. LTD.,

Experts in Power Transmission,

COVENTRY.