42

THE COLLIERY GUARDIAN.

January 4, 1918.

CEMENTATION for
WET VIRGIN GROUND

YEARS of STUDY
and EXPERIENCE
HAVE BROUGHT
MY SYSTEM OF
CEMENTATION
TO PERFECTION.

TO COLLIERY PROPRIETORS.

Shafts sunk, tunnels driven, and
other mining constructions carried
out in difficult and very wet ground
by the best method. Success guar-
anteed.

18 shafts completed in England,
and 7 in progress.

Ferro-Concrete Lining a speciality.

Feeders of water in shafts or levels
effectually treated.

ALBERT FRANCOIS, "doXsteT

Telegrams—“ Francois, Doncaster,”	Telephone—408 Doncaster,

Partners: Albert J. Francois (Belgian); Thomas Blandford.

BUMSTED & CHANDLER LTD.

Cannock Chase Foundry and Engine Works,

HEDNESFORD, STAFFS.

Telegrams—“ Bags, Hednesford.”	Telephone—48 Cannock.

FANS

AND
ENGINES

FOR

MINE

Ventila-
tion,
with
Special

Reversing
Doors.

U I

High
Speed
Engines

FOR
LIGHTING
and
POWER.

Centri-
fugal
Pumps.

Haulage
Gears,
&c.



Above illustration shows our Steel Cased Reversing Fan, which is passing a larger
volume of air than the 40 feet brick-cased fan alongside it.

M. COULSON ltd!;

SPENNYMOOR,

= MAKERS OF ...-.=

Coal Washing and Screening Plant
Coke Oven Machinery

Gas Works & Chemical Works Plant

Ash Washing and

&C.J &c.

450 H.P. MAIN AND TAIL HAULAGE GEAR.

LOWER

12

RAISE,

RAISE’

-STOP.

Slower
.steadily^

9,\

(8

WINDING

SIGNALS

“NON-CUMULATIVE.”

ELECTRIC.
MECHANO-ELECTRIC.
MECHANICAL.

SIMPLE.

EFFICIENT.

INEXPENSIVE.

DAVIS’S SPECIAL

RELEASING GEAR.

HAULAGE PLANE
SIGNALS

Electric or Mechano-Electric.

SEND FOR LIST 41 v.

JOHN DAVIS & SON (Derby) Ltd.

All Saints Works, DERBY; & 17, Victoria Street, Westminster, S.W. 1.

ra

Established 1800.

BRASS TIME CHECKS

JOHN LAWSON A SONS,
Manufacturers of every kind of
STEEL STAMPS, LETTERS,
FIGURES, BRANDS, STENCIL
PLATES, &c.

Telephone No. 877

G.H I J
MN OP

Roebuck Letter Works, 26, Carver Lane, SHEFFIELD.

GRIPTITE

JOINTING

COMPOSITION

FOR ALL KINDS OF FLANGED JOINTS IN
CONNECTION with STEAM, GAS, or WATER.

“GRIPTITE” stands highest pressures at any tem-
perature. It is non-poisonous and British made.

If is 75 °/o GREA TER in BULK

THAN^ LEAD^ COMPOUNDS^

“GRIPTITE” is used by several Engineering Firms,

Iron Works, Gas Companies, Mills, Breweries, &c.

Supplied in kegs t, J & 1 cwt. at 40/- per cwt. (carriage paid).

Kegs extra at cost price. Mixed and ground in oils, ready for use.

CROUCH & CO.,

Ruskin Works, Ruskin Av., Manor Park, LONDON, E. 12.