1394 THE COLLIERY GUARDIAN Jone In, 1914. WOLF SAFETY LAMP CO. WILSON & STOCKALL. TREFOR SOC. ANON. The Wolf Safety Lamp Company’s exhibits include acetylene lamps, miners’ flame safety lamps, miners’ electric lamps, and lamp cabin equipment. The Wolf acetylene lamps, of which more than one million have been supplied to mines, quarries, railway companies foundries, engineering works, etc., in all parts of the world, are of the greatest durability, and will withstand any strain they are likely to be exposed to during practical use. Both carbide and water vessels are pressed from the best possible sheet steel, without any seam whatever, whereby the greatest strength is obtained. All steel parts are double tinned or galvanised, and the insides of carbide and water holder are in addition coated with non-corrosive paint. Two of the most Fig. 1. Fig. 2. (The Wolf Safety Lamp Company.) Fig. 3. This firm show one of their Local Government pat- tern of colliery ambulances. In this equipment seats are fitted on the off side the whole length of the body, giving room for patients and attendants to sit. It is fitted with two up-to-date stretchers. The top one is slung—runs in on a folding frame, which is suspended from the roof of the ambulance, and when not required neatly folds up to the side of the body out of the way. The bottom stretcher is fitted with detachable rubber- tyred wheels, with rubber ball bearing springs and axle. The ambulance has the merit of being well ventilated, and is supplied with lamps for day and night; comfort- able springs, easy riding, hung low on cranked mail patent axle, the bottom of body being only 22 in. from This company show various examples of boring and sinking work carried out under the Vogt, Brejcha, and F.M.P. patents. These include plans and diagrams of sinkings by cementation and compressed air at Bethune, and at Giraumont, in France. There are also to be seen samples collected by the processes of sinking and boring both in this country and on the Continent, together with various materials and appliances used under the respec- tive systems. These include the Brejcha method of setting diamonds and a special core-bar to take cores in water bearing strata. THE LEA RECORDER CO. LTD. This stand is arranged generally to illustrate the continuous measurement of flowing liquids over V notches and weirs by means of Lea recorders and integrators. The types of apparatus shown include the standard Lea recorder, handy type of Lea recorder, standard and “compact” Lea integrators, etc. UNITY WOOD & IRON CO. LTD. Messrs, the Unity Wood and Iron Company Limited, of Padiham, show a new type of safety catch, known as the “ Unity ” safety suspending apparatus. The arrangement is such that on the breakage of the winding rope, two coil springs are released, this action causing grooved slippers to grip the conductors. SIEBE, GORMAN & CO. LTD. Messrs. Siebe, Gorman and Company exhibit their well-known “ Proto ” (Fleuss-Davis patent) breathing apparatus for rescue and recovery work in mines after explosions. Demonstrations with the apparatus are given daily at frequent intervals by trained members of the Lancashire and Cheshire Coal Owners’ Association from the rescue station at Howe Bridge, in the smoke chamber immediately adjoining the stand. The firm also show their self-rescue apparatus, which has been specially designed for enabling miners trapped in a mine after an explosion to make their way to safety, as well as the type of breathing apparatus specially designed for and exclusively adopted by the London Fire Brigade after exhaustive tests with all types. This apparatus, which is shown in the accompanying illus- tration, is fitted with a special mask, with windows, which covers the whole of the face. The apparatus is extensively used Wolf acetylene lamps are illustrated herewith. Fig. 1 represents the “ No. 65 ” lamp for mines and quarries. It is a 16-eandle power lamp, and burns 12 to 14 hours. Fig. 2 shows the well known “Colibri ” lamp, which is only 4| in. high, and weighs 5 oz. Its low first cost as well as the exceedingly small cost of upkeep make it a very popular lamp for miners in naked light mines. The “ Reflector ” lamp gives 100- candle power for 14 hours, and is admirably adapted for ship yards, contractors’ works, etc. The flame safety lamp which the Wolf Safety Lamp Company have designed to meet the new conditions in home mines is a combination of the Wolf and the Patterson patents, and presents many valuable features. The Wolf-Patterson lamp is indicated in fig. 3. It is made in two sizes, and in steel, brass, aluminium and magnolium. The fireman’s pattern is provided with middle and bottom shut-off. The Wolf electric lamp, with lead accumulator, has many special qualities which differentiate it from other lead accumulator lamps, and while being much more expensively built than is usual with this class of lamp, it is, we understand, the lowest priced lead accumulator lamp on the market. The Wolf alkaline lamp, one design of which is shown, is an entirely new invention. It contains a nickel-cadmium battery with alkaline electrolyte, and must not be confused with Edison and Junquer batteries, which have been on the market for many years. The Wolf Safety Lamp Company, Sheffield, pin their faith in their alkaline cell by guaranteeing it for the first 2,000 shifts. These lamps are in use at the Grassmoor, Sherwood, Rotherham Main, Park House, Backworth, Pengam, and very many other collieries. We noticed on this stand a beautifully made model of a lamp room equipment, complete with exhausters, safety benzine storage, lamps, and, in fact, everything down to minute spanners and files. GENT & CO. LTD. Messrs. Gent and Company Limited show both types of their signalling systems. These were described in the Colliery Guardian of May 8, 1914, p. 1006. The “Tangent” system, it may be briefly recalled, comprises a visual indicator in the engine house; a banksman’s outfit, consisting of two sets of tappers and bells; and a similar outfit for the onsetter. A multicore cable is run to the furthest required point from the engine house, the number of conductors corresponding to the number of signals, with one common return. There is another multicore cable between the banksman and nearest onsetter, the number of cores corresponding to the number of levels. A feature of the system is its careful adaptation to the working conditions. The other appliance shown by the firm consists of an electrically operated step-by-step indicator, to work in conjunction with existing bells and wiring. There is one wire from each level, and a common return. These indicators may also be operated by means of “rappers” where the latter are already installed. Or an electrical contact can be provided which will operate the dial on a local circuit, a circuit closer being actuated by the mechanical movement of the signal wire. Messrs. Gent and Company, who are well known as the makers of the “Pulsynetic” clocks and other elec- trically controlled appliances, list a generous range of bells and fittings suitable for colliery use. Fire Brigade Type of Rescue Apparatus. (Siebe, Gorman and Co. Limited.) I -W -, w® PROTO. I. SV ' the ground, and making it very easy for placing the patient in position. The vehicle is full lock, and will turn in a cul-de-sac street. It has an English ash frame and bay wood panels. The wheels are rubber- tyred, and a good brake is fitted. It is easily drawn by one horse. Another ambulance is shown with one stretcher, there being a folding seat to accommodate three persons inside, apart from the driver and another in front. Other exhibits include, in addition to various types of stretchers, first-aid boxes, etc., a two-wheeled ambu- lance litter, with waterproof cover and hood, pillow, lamp, drawer for splints and bandages, etc. This litter is equipped with a hinged front leg support. JOHN KERR & CO. This firm shows chemical fire extinguishers in two and three gallon sizes, as well as a portable chemical fire engine of 40 gallons capacity. supplied with oxygen from a steel cylinder of 6 cu. ft. capacity, the oxygen passing through a reducing valve at the rate of 3 litres per minute. There are also on view smoke helmets of every description, including helmets fitted with telephonic communication and speaking apparatus, oxygen resuscitating apparatus, gas analysis apparatus of all descriptions for testing mine air as designed by Prof. J. S. Haldane, F.R.S., animal air tester for the detection of CO, oxygen compression pumps, and electric safety lamps. FELBER, JUCKER & CO. LTD. This exhibit consists of a building suitable for an office or similar structure at a colliery. The building is 14 ft. square, and is constructed throughout of ‘ ‘ Asbestilite”— the modern asbestos-cement building material. The structure is made in sections, so as to be easily removable. (Continued on page 1403.)