November 5, 1915.

THE COLLIERY GUARDIAN.

923

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality—

COAL SCREENING & CONVEYING

To Colliery Proprietors,
IMPORTANT Engineers and

1111	.........- Contractors, &c.

To secure dependable winding and absolute
safety, all gear brakes should be fitted with
Cresswells’ “GHEKKO” Semi-metallic Asbestos
Brake or Clutch Linings.

Their grip is firm as a rock, yet responsive
and pliant as a hand grasp. “ CHEKKO ” provides
instant and perfect retardation at all speeds and
under all loads. “ CHEKKO ” is a great precaution
against overwinding.

We make no brakes of cotton fabrics or other
than of pure Asbestos.

“ CHEKKO ” Brake Linings easily outlast
many times all others, and are, therefore, not only
the best in quality, but also far the cheapest.

Write for Samples, Diagrams and Prices, to :

CRESSWELLS’ Limited,

Asbestos Spinners & Manufacturers,
Wellington Mills, BRADFORD (Yorks).
Telegrams: “ Asbestos, Bradford.” Phone: 950 Bradford.

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.

!li! i i
«»•



CONSIDERABLY OVER

100 PLANTS H

WORK IN
BRITAIN
COLONIES.

MARKS. STAMPS. BRANDING IRONS.

of Letter# figure Punches, fmloss/ng Presses.
PressdemePfates, flerc/ls, Pfou/ders’Lettersi figures.

pies. E.PRYOR& SON, Seals.

J. ORMROYDE,

Boiler Coverer & Manufacturer,
Denton Street, WIDNES. Tel. 153.

Estimates and Designs on application.

Agent for South Wales: A. LEIGHTON STEVENS, 15, Fields Road, Newport, Mon.

Compositions Plastic; Silicate of Cotton;
Asbestos, all kinds; Magnesias, &c.

“RDS” Steam Trap

PATENT

Suitable for any Pressure.

ELECTRIC PLANT ^ACCESSORIES

CABLES & SWITCHES.

CARBON &■ METAL
LAMPS.

iETC.,

TELEP: 2973 (TWO L/NES)

TELEG: "THOR”

HASLAM & STRETTON,Lr,D

U.W1NDSOR PLACE,
CARDIFF. . .

THE BEST PROTECTIVE FOR
COLLIERY PLANT IS
BITUMASTIC Solution.

WRITE FOR DESCRIPTIVE BOOKLET TO



---o---

View of large Colliery
showing 4 Head Gears,
Corrugated Iron Buildings,
-------- &c. ----

Coated 7 Years ago
and

STILL IN GOOD
CONDITION.

---o---

SOLE MANUFACTURERS—

WAILES DOVE BITUMASTIC LIP Newcastle-on-Tyne,

Ano at London, Liverpool, Manchester, Glasgow, Cardiff, Birmingham, Leeds, &c.
"Phone, in .rery office.	Telegram.—“ BlTUMAiirc."

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,
HOPKINSONS “PLATNAM” Metal Valve & Seat.

HOPKINSON

'"Ota

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.

DeHcrlptlon.

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

J. HOPKINSON & GO. LD.,

HUDDERSFIELD.

No. 306.