August 14. 1914

THE COLLIER! GUARDIAN.

359

CHECKS

AND

f.pwofasw



PUNYARN

HOP BAGS

ft: J. tf. Mudford * JONS,

55, Exchange Street,
Sheffield.

Telephone-560. ^Telegraphic Address-TENTING1

COTTON-WASTE

PB
MW.
p

THE

SOC1ETE de FONCAGE de
PUITS FRANCO - BELGE.

===== CAPITA!. 1,350,000 fcs. :=:^=^=

undertakes Prospecting, Pit Sinking, Repairing
Shaft Linings, and Tunnelling.

A Special Feature is made of : -

Shaft Sinking by a patented process of percussion
drilling combined with the injection of heavy
liquid ; also of Hardening and Drying Water-
bearing Strata by the freezing process and by the
Portier and Saclier Processes (Injection of Cement
under Pressure).

Up-to-date Processes & Plant. Numerous Installations.

HEAD OmCES :

Bvd du Nord (40, Rue de Malines), BRUSSELS.

Telephone—3415 A Brussels.	Telegraphic Address—Foncage, Bruxelles.

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield

Speciality

COAL SCREENING & CONVEYING

MOTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER





CONSIDERABLY OVER

inn pi ant2	-"

IUU I LHIt I O *nd THE colonies

Estimates and Designs on application.

Agent lor South Wales: A, LEIGHTON STEVENS, 16, Fields Road, Newport, Mon.

“RDS” Steam Trap

PATENT

TELEG' THON

CABLES & SWITCHES.

CARBON &•'. METAL
LAMPS.

HASLAM&SCHONTHEIL’L™
ll.WINDSOR PLACE. !
. . CARDIFF. . .

'	.	. ' A

TELEP: £978 (TWO LINES)

Suitable for a,ny Pressure.

A large number of these traps have been in use for several years, and our experience has been so
satisfactory that we have every confidence in recommending them to steam users. The workman-
ship and material are of the highest quality, and it is altogether a far superior article to the many
cheap bucket traps now on the market.



CAST IRON BODY AND LID,
HOPKINSON’S “PLATNAM” Metal Valve & Seat.

HOPKIN SON

I .

i,_
111'

Wt





SPECIAL FEATURES.

Simplicity. Reliable. Quick
in action. No Dribbling.

Strong Intermittent Water
Discharge. Quick Cut-off.

Will lift its water 2 feet for
every 1 lb. steam pressure.

Fitted with Valve and Seat of
HOPKINSON’S “PLATNAM”
METAL, which is five times
harder than bronze and ad-
mirably suitable for with-
standing the cutting action
of the water.

Description.

This steam trap is of the open float
type, and consists in its simplest form of
a Water Chamber A, Float with centra)
guide B, Valve C, Water Inlet Pipe,
and Water Discharge Pipe. The dis-
charge pipe forms the snide for the float.

The valve remains on its seat until the
float has sunk low enough to touch the
collar on valve; it then immediately
begins to discharge.

The Gallery or Water Pocket F is an
important feature, as it fills with water
when the float is at rest; when the float
begins to rise from its lowest position,
the water thus collected flows through
the hole G into the body A, thus ensuring
a rapid elevation of the Float indepen-
dent of a small amount of water passing
into the trap. The valve is not rigidly
connected with the bucket, and it is
therefore held on to its seat until the
Float acts on the Valve. This device is,
therefore, most valuable under all con-
ditions of working, but more especially
when the volume of water entering the
trap is small. Its lifting effect on the
Float is indicated by the sharpness with
which the water discharge is cut off.

HOPKINSON’S PATENT SAFETY BOILER MOUNTINGS AND VALVES for High Pressure
Superheated Steam, High-class Exhaust and Water Sluice Valves for Condensing Plants, &c.,
Automatic Exhaust Valves, Reducing Valves, Steam Traps, &c., &c.

JU A I M E Q fir fl fl	Electrical Mining Plant Manufacturers,

■ 111 nULIvlEd 0v uU>, newcastle-on-tyne

J. HOPKINSON & CO. LD..

HUDDERSFIELD.

We are Exhibiting at the “Shipping, Engineering and Machinery
No. 275. Exhibition, Olympia, September 25 to October 17, 1914.