June 6, 1913.

THE COLLIERY GUARDIAN.

1201

HENRY BEAKBANE.

Mr. Henry Beakbane, of Stourport, shows leather
goods for colliery use, including pump leathers, cable
suspenders, washer leathers, &c.

BRITISH GRIFFIN CHILLED IRON AND
STEEL CO. LIMITED.

Messrs, the British Griffin Chilled Iron and Steel
Company Limited, of Barrow-in-Furness, show varieties
of their special “Komos” chilled castings for use in
mines. This metal is very hard and tough, thus lending
itself admirably to mining work. The exhibits consist
of plates for grinding, liner plates for ball and tube
mills, cones and jaws for crushers, &c., cams, capstan
heads, bollards, discs, &c. There are also examples of
mine car wheels, 8 in., 9 in., and 12 in. diameter, with
exceptionally hard treads.

GEORGE CRADOCK AND CO. LIMITED.

Messrs. George Cradock and Co. Limited, of Wake-
field, have a fine stand, all the rails and standards, &c.,
being composed of lengths of lock-coil and other wire
ropes. These form the principal features of the exhibit,
samples of new and worn steel ropes, for a variety of
purposes, being shown. Other exhibits include samples
of mining steel, nickel and file steel; guide rods, under-
tub and overtub haulage clips; capels and other wire
ropes, attachments, &c.

JOHN KING AND CO.

This firm show their well-known tub pedestal and
“ Climax ” No. 3 endless rope haulage clip. In the
pedestal the boss of the wheels runs against security
hooks, thus allowing the lubricant to traverse the
whole of the bearing surface; only one bolt per pedestal
need be loosened to remove the axle. It is supplied
with plain white metal on roller bearings. The “ Climax ”
clip is of the cam and lever type and is suitable
for all classes of under-tub haulage. It may be
adjusted by turning an eccentrically bored washer, and
the lever and cam may be attached so as to grip the
rope when either pointing forwards or towards the tub.
The firm also show a patent haulage pulley, brattice
nails and motties.

BUTTERWORTH BROTHERS LIMITED.

This company’s chief exhibits comprise the specially
toughened glasses for miners’ lamps, which are made in
this country only at the Newton Heath Works, Messrs.
Butterworth’s being the only British firm who have
succeeded in passing the Home Office test for these
articles. The glasses are supplied from ten different
moulds, in heights varying from 52 to 67 mm. in height,
and from 56J to 63 mm. in diameter, all being uniformly
5J mm. in thickness.

Other exhibits comprise glass wells for mines,
engineering rooms, &c.; also high pressure gauge
glasses.

GWYNNES LIMITED.

This Hammersmith firm show an “Invincible”
centrifugal pressure pump, one of two constructed to
the order of the New South Wales Government Public
Works Department. Each pump is capable of delivering
75,000 gallons of water per hour against a manometric
head of 517 ft. The impellers and guide-blade rings
are made of phosphor bronze, and the spindles of nickel
steel. Another exhibit is an “ Invincible ” centrifugal
pump of special heavy design and construction for
pumping tailings, gravels, &c., volute and side plates,
and the whole of the internal working parts being lined
with a special metal, and are renewable. Solids that
enter the suction pipe will pass through the pump, a
10 in. pump thus being able to pass 10 in. solids. This
pump has been supplied to the order of Messrs. Price
and Belsham, Queen Victoria-street, E.C. There are
also shown submersible electric motors and “Invincible”
centrifugal pumps combined, for working in water, the
water passing freely between the rotor and stator of
motor. One is of the vertical spindle type for sinking
purposes, and the. other of the horizontal type.
LUBRICATORS LIMITED.

On this stand is shown the “ Menno ” compresses
(automatic) air grease cup, made in mild steel and
heavy-gauge brass.

A. HIRST AND SON LIMITED.

Messrs. A. Hirst and Son Limited (Crescent Coal-
cutter Works, Dewsbury) show a “ Crescent ” standard
low-type compressed-air longwall cutter, fitted with
totally-enclosed working parts. The cylinders, all
bearings and gearing are kept constantly flooded with
oil by means of a small pump, the same oil being used
over and over again. Another special feature is the
silent running; all the gears are machine-cut and run
remarkably smooth, and the exhaust is silenced in a
efficient manner without putting any back pressure
against the piston. A similar machine is shown, fitted
with a totally-enclosed motor, s witch and gearing. Flame-
tight joints are used throughout, all mica is used for
the insulation, and all cables are drawn through heavy
steam tubing. The gearing is built on the same lines
as the compressed-air machine, with continuous lubrica-
tion. These “Crescent” machines are working on all
grades from level to dips of 1-3, dry places and wet
places; cutting in coal on bad floors and under bad
roofs as much as 250 yards per shift, and cutting in
dirt as much as 160 yards per shift, and giving outputs
up to 300 tons per shift. Many of the machines, we under-
stand, have run two years on end without losing a single
cut. The mechanical parts of the Crescent coal-cutter
are built of steel throughout; the gearing is of great
strength and durability, and the mines throughout have
the finest work in them that it is possible to put in.
Cutter wheels from 3 ft. to 6 ft. undercut can be
supplied to suit any condition of holing, and the
machines are built as undercut or overcut, as may be
desired. The same firm show a “ Crescent ” coal drill full-sized cage junction platform arranged on the
for shotholes on a face where the coal has to be blown | stand under working conditions. The operation of

down. These machines are built for continuous current,
three-phase current or compressed air; they are capable
of drilling 60 holes per shift 4 ft. deep on a fate 100 yards
long. They are adjustable in every direction, and are
extremely portable.

RUDOLF MEYER A.G.

Much interest has been shown in the exhibit of this
firm, whose headquarters are at Muhlheim-Ruhr, and
for whom Mr. A. Klein, of Dronfield, acts as sole agent
in this country. The most conspicuous feature of the
exhibit is a four-tank compressed air mining locomotive
similar to that described in the paper by T. Giller,
appearing in last week’s issue of the Colliery Guardian.
The locomotive shown is one built for the Royal
Prussian State Mine at Zweckel, in Westphalia, and has
a capacity of 18-horse power normal and 36-horse power
maximum, with an air-pressure of 2,1301b. in the
receivers. The following table shows the various stock
sizes in which the Meyer locomotives are supplied for
different duties, but we understand that they can be
supplied to any size on request, and to suit special
conditions of working:—

No. of size.	Weight of loco.	Height Number of 1 of		Weight of trains.		Gradient of rail.	Working pressure.	Number of tanks.	Radius of action.	i  Use.
		loco.	i tubs.	Empty.	Full.					
	Tons.	Ft. in.		Tons.	Tons.	Degs.	Lb.		Yards.	
I.	20	9 6	—	—	—	—	2,250	9			For shunting.
II.	135	5 6	40	32	88	Level	2,250	6	2 x 4,500	Ironstone mines, &c.
111.	6’5	5 0	40	13	40		2,250	4—3	2 x 5,000	For collieries.
IV.	5	4 6	25	8	25	>»	2,250	3	2 x 3,000	
V.	3*5	4 0	15	5	15		2,250	2—3	2x2,000	

On the same stand are a number of pneumatic drills ' the Barrow Hsematite Steel Company Limited, Barrow
and tools for mine and quarry work. One of these is Collieries, Barnsley, John Brown and Co. Limited,
the “ Loetschberg ” rock drill, so called on account of | Rotherham Main Colliery, Rotherham, and Clifton and
its excellent performances in the driving of the Loetsch- Kersley Coal Company Limited, Astley Collieries, near
rx/’k**/"* 4- it vi I /xvt 4- La zx l-J	G! v wa -vsl /tvt li v»z\	4- Ia z-x TV    1 _ J 	1 •	. •»	• •	. a

berg tunnel on the Berne-Simplon line. For the
execution of this work Messrs. Rudolph Meyer supplied
plant to the value of about £20,000, and four of these
drills, erected on a special movable frame, advanced
1,209 ft. in one month’s work. The drills are fitted
with automatic lubricators, weigh 418 lb., and have 3| in.
cylinders. Three smaller sizes are supplied. The out-
fit that completes the installation of these machines
consists of electrically - driven compressor, tank and
boring wagon, with the necessary hose and attachments.

Several smaller sizes of hammer drills are shown, the
general characteristics being the automatic reversing
movement and the air connecting cock. Some are of
the valveless type for working in soft ground, whilst
others are equipped with a quick cut-off valve. A low-
pressure dfill giving a long piston stroke is also shown
which is well adapted for sinking purposes in hard
ground. These latter drills can be fitted with water
flush apparatus, which is constructed in the interior of
the drill, the water being injected through the piston
into the shank end. There are in addition several
types of smaller chipping hammers which find an
extended application for stone dressing, &c.

ALLEY AND MAOLELLAN.

Messrs. Alley and MacLellan Limited, of the Sentinel
Works, Polmadie, Glasgow, have some heavy machinery
on their stand. One of the exhibits is a belt-driven air-
compressor of standard design of 300 cubic feet
capacity. This is fitted with the company’s patent
automatic multiple-ported, short-lift valves, and is
driven by electric motor. There is also a two-stage
compound steam-driven compressor of 1,000 cubic feet
capacity.

Another heavy exhibit is a 5-ton overtype “ Sentinel ”
gearless steam wagon. This is driven by a double high-
pressure slow-speed engine.

The rest of the stand is occupied by a varied assort-
ment of “ Sentinel ” valves taken out of stock. These
include stop valves, check valves, sluice valves, auto-
matic exhaust valves, surplus pressure valves, &c. The
“ Sentinel ” surplus steam valves have been designed to
provide a simple and reliable means of passing large
quantities of low-pressure steam. They are fitted in
such positions as where the exhaust from non-condensing
engines is passed into reservoirs for use by low or mixed
pressure turbines to rapidly and with certainty relieve
the large surplus of steam which has at intervals to be
dealt with. The action is doubly sure, for the valve can
act with or without the governor. In the surplus
pressure valves the main valve is bolted to the thermal-
storage tank by its bottom flange. It is normally held
closed to slightly above its working pressure by the
adjustable springs, but will of itself open with any
excess of pressure by the yield of the springs. To
increase the opening to prevent clattering, and as a
double check on its action, the governor is fitted to each
valve. Pressure steam from the main thermal tank is
conveyed to this governor by a small copper pipe. A
rise of pressure above normal opens a valve, and
pressure steam is admitted above the piston, thus
assisting the main valve to open. This action continues
until the steam pressure falls, say, | lb. below normal,
when the valve closes and the steam in the cylinder
escaping by a small pipe, the main valve is free to close.
Mention may also be made of the “ Sentinel ” metei*
valves for measuring the flow of liquids through pipes,
which may also be used as stop-valves.

RICHARD CREMER.

The exhibit made by Mr. Richard Cremer, of 32,
York-place, Leeds, was of a diversified and highly
interesting character. In the first place we noticed a

this appliance is as follows:—The platforms effect
a connection between the rails at the pit bottom and
those of the cage. The outer ends of the platform rest
on the rails in the cage, whilst the other end is
connected with the pivot of the rail track in the pit
bottom. The platform is operated from the side by-
means of a lever, the operation being carried out very
easily by the fact that the platform is fully counter-
balanced by weights. The end of the platform resting
on the cage rails fluctuates up and down with the
movement of the freely-suspended cage which is being
loaded and unloaded, so that the tube can be run in and
out of the cage, even though the latter is not exactly on
the same level as the floor of the pit bottom. To
prevent accidents arising, the outer end of the platform
is provided with ;pawls, which are mounted in such a
manner that they always tend to assume a horizontal
position, so that if struck by the descending cage they
give way before it and allow it to pass by without
injury. By this means any neglect on the part of the
men is counteracted without interrupting the work.
About a thousand of these cage junction platforms are
now installed, amongst others using them being Messrs

Manchester, and in every case they are giving the
highest satisfaction.

In addition to the platforms, Mr. Cremer exhibits the
pneumatogen self-generating rescue apparatus, 1911.
This apparatus is based upon the principle of regene-
rating the oxygen required for breathing from the
products of exhalation by means of filtering these
through a layer of potassium sodium peroxide. More
than 1,000 pneumatogen apparatus are in use in mines,

Combined Pressure, Volume and Velocity Meter,
(Richard Cremer.)

and 35,000 cartridges, i.e., more than 23,300 lb. of the
patented peroxide compound in connection with these
apparatus have been used for carrying out serious work in
mines. The drawbacks of the former patterns of the pneu-
matogen—namely, that of a rather high temperature of
the inhaled air, and of occasionally too great resistance of
breathing—have in the present pattern been entirely-
overcome, and the scope aspired to for fulfilling all
demands of a rescue apparatus for practical use have,
after considerable scientific investigation and practical
trials, been completely reached. The weight of the
apparatus complete with cartridges is 22 lb. The
apparatus is of such dimensions that a man equipped
can pass an aperture of 18 in. square. A smaller pattern
of the pneumatogen suitable for half to one hour’s
breathing, also designed for self-rescue for miners and
others, is supplied.

We also noticed a number of pressure, velocity and
volume meters for indicating and self-registering of
pressure or vacuum and velocity or volume of air in the
main air currents in mines, for an exact and accurate
controlling of ventilation. The apparatus enables the
observer reading simultaneously volume (velocity) and
pressure (vacuum), the only way of forming a reliable
and correct view of the conditions in the ventilating
system. The action of this meter is based upon the
simultaneous measuring of the pressure of velocity and