May 23, 1913.

THE COLLIERY GUARDIAN.

1095

—■“TREFOR ”1-1
BORING and
MINING Co. Ltd.

(Society Anonyms de Forage et
Entreprises Minieres),

41, RUE ROYALE, BRUXELLES.

CONTRACTORS FOR
DEEP BORINGS.

We make a Speciality of HEYWOOD & BRIDGE'S

PATENT FRICTION CLUTCHES and
HAULING INSTALLATIONS.

Wells drilled for petroleum
in all parts of the world.

Special outfit for coal borings to any
depth and of any diameter (Vogt’s
Patents).

BREJCHA’5 PATENTS.

We are
supplying our
Hauling Gears
to the
leading Gold
Mines,
Collieries,
Quarries,
Brickworks,
etc., etc.,
and are
continually
receiving
repeat
orders.

(Electrical and Mechanical, Vertical and Horizontal.)

w.

'AN





The
illustration is
of Endless
Wire Rope
Hauling
Pulleys with
Friction Clutch.

We have
thousands of
our Clutches
at work on
all kinds of
drives.

Send for
Catalogues
free.

Patentees & Sole Makers, DAVID BRIDGE * CO. LD., Haulage Works,
CASTLETON. MANCHESTER.

Boring to any depth without casings
and without reduction of diameter.
Speed record in England: Boring
Heswall (Cheshire), 3,400 feet in eight
months.

Shafts sunk by freezing
method

Shafts sunk by cementing the watery
grounds (cementing and sinking
simultaneously).

Automatic Detachment,

The 1911 lever has large lateral stops and a
wedge-shaped head.

Drop-forged shells (two sizes), levers (four
sizes), catches and couplings.

SMALLMAN '«-* HAULAGE CLIPS.

New Mode!: Nine Sizes*





Patented 1902, 1906 and 1910.

Illustrated Catalogue.	Clips can be had without catches.

Patentee and Sole Manufacturer:—

JAMES W. SMALLMAN, NUNEATON, England.

NO MORE PIT CAGE ACCIDENTS!

Ascending
and
Descending
Cages
Safeguarded.

No
Interference
with
Winding.

Starting
in the
Wrong
Direction
Prevented.

A

;■ S'* :

■

f* • rr

i :

P' ’a







Safety
assured
with

‘THE
VISOR.

The most

Effective

Machine on
the
Market.

Over 200

at work.

particalars to JOHN WOOD & SONS Ltd.,

Telephone : 55 Wigan.

Engineers, WIGAN. Telegrams: “Haulage, Wigan.”