July 2, 1915.

THE COLLIERY GUARDIAN

11

The Life of Steelwork is Doubled
When it is Coated with

BITUMASTIC^

“ BITUMASTIC ” Solution effectively Prevents Corrosion, and
thus saves Costly Repairs and Renewals.

“ BITUMASTIC ” is a Brilliant Black Colour, Supplied Ready
for Use.

Greater Covering Capacity and Superior Lasting Qualities
than Ordinary Paint.

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality-

COAL SCREENING i CONVEYING

WRITE FOR ILLUSTRATED PAMPHLET TO SOLE MANUFACTURERS—

WAILE8 DOVE BITUMASTIC L™ Newcastle-Tyne,

And at London, Liverpool, Manchester, Glasgow, Cardiff, Birmingham, Leeds, &g.

’Phones in every office.	Telegrams—“Bitumastic.”

ROPE

DRIVING

FOR EFFICIENCY

DURABILITY USE

DIPLOMAS OF HONOUR

BRUSSELS and TURIN.

Illustrated Lecture on—
‘ THE TRANSMISSION
OF POWER BY
ROPES.”

Post Free on Application.

A G*

: A

LONDON OFFICE :

95 & 97, Finsbury Pavement,
E.C.



Wm. KENYON & SONS Ltd.,

CHAPEL FIELD WORKS,
DUKINFIELD, near MANCHESTER.

Telegrams:

“ Kenyon, Dukinfield.”
Telephone:

494 Ashton.

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.

CONSIDERABLY OVER

100 PLANTS

NOW AT WORK IN
GREAT BRITAIN
AND THE COLONIES.

Estimates and Designs on application.

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

MARKS. STAMPS. BRANDING IRONS.

Sefs of Peffers figure Punches, fmioss/ng Presses.
PressffemeP/etes, PPeaa/s, Pfoiffffers'Pefferstfi'gi/res.

pies. E.PRYOR& SON, Seals.

HOPKINS ON-FERRANTI

PATENT

STOP VALVE

For Steam and High Pressure Water Service.

Founded 189 9.

WATER

AND

WATER ENGINEERING.

Price 6cL monthly.
Annual Subscription,
7/6 post free
(payable in advance).

Offices—

30 & 31, Fubnival Stbeet,
Holbobn, London, E.C.

YES, but! Careful shaftmen use Holdemrites.

A Derbyshire Mining Engineer says, “Send ur another dozen of your
Safety Belts (HOLDEMRITES, 21b. weight, 2,0C0 to 6,0001b. strength
and £10 per doz.) for our men soon g-ot the knack of using the others
We must ALSO have 2 pairs of your Safety Clips (HOLDEMWELLS.
15s. per pair) for headgear men.”

A Yorkshire Engiuewright says, “ Send our agent one of your Holdem-
rites for inspection. I think more of my character and position than to
allow shaftmen to be without such a useful thing.”

A Leicestershire Engineer (after repeating orders) says, “Our men liked
the last lot, and they now see that they have neither right nor business to
be in the shaft without having a Holdemrite with them, to use as jobs
require, and I can now trust their common sense.”

I suggest your shaftmen have sense enough to use these real Safety Belts

Any number of Holdemrites are sent for inspection or on approval. ’Tis
well to have half a dozen on hand at each shaft pit so that men can have
the OPPORTUNITY of using them as occasion requires. Occasional
usage leads to regular usage. They last as long as 7 years, soon save their
cost, and hold men right when they need holding right.

A. HANLEY 21, Alpha Road, Bristol.

The Greatest Advance in

Valve Construction of the Tinies.

QUALITY m SWITCH GEAR.

LIQUID
SWITCH
GEAR
of
HIGH-
CLASS
MAKE
and
GOOD
DESIGN.



WRITE
for
LIST

No. 60
with

PRICES
and

ODTPUTS

PRINCIPLE :

Converting the pressure of
the fluid into velocity and re-
converting the velocity into
pressure, thereby passing an
amount of steam equal to full
carrying capacity of pipe.

SELLING POINTS:

Passes same quantity of steam as a full-
bore valve.

Seats half diameter of ordinary sluice
valve, therefore halves possible leakage.

Graded opening—no sudden rush of steam
in opening.

Is not subject to wedging action or
mechanical strain.

When the valve is open the seats are pro-
tected from the flowing fluid by the eyepiece.

Always easy to open and close under
pressure.

Discs and Seats of

HOPKINSON’S

“ PLATNAM ” METAL.

Suitable with Superheated Steam.

Illustrated Specifications and
Catalogue free on application.

Illj

o
o
o

o
o
o

u>

J. H. HOLMES & GO., Newcastle-on-Tyne.

J. HOPKINSON & Co. Ld.,

Makers of Patent Valves and Patent Safety Boiler Mountings,

HUDDERSFIELD.

London, Glasgow, Edinburgh, Cardiff, Oldham, Paris & St. Petersburg.

No. 306.