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Exhibition at Olympia (Continued from Page 30) ships, and two types of emergency compressors. Marine gears, Burns’ patent, were exhibited by Stothert and Pitt, Ltd., Bath. Babcock and Wilcox, Ltd., London, exhibited models of their patent water tube steam boilers and a totally en- closed steam winch. E. Green and Son, Ltd., Wakefield, showed types of Green economizers. Various type: of oil burners were shown by Laidlaw, Drew and Co., Ltd., Edinburgh, Scot- land, by J. Samuel White and Co., Ltd., East Cowes, Isle of Wight, and by Moon Bros., London. Lubricators were displayed by the Empire En- gineering Co. (Manchester) Ltd., who exhibited the Marinol mechanical lubricator, which feeds a semi-solid lubricant to stern tubes, crankpins, CtG.cy Oil Separators on Disp'ay Super-Centrifugal Engineers, Ltd., London, showed several types of Sharples super-centrifugal oil separa- tors and clarifiers, some of which were in actual operation. The exhibit in- cluded the latest design of totally enclosed oil purifier for the treat- ment of oils at high temperatures while avoiding any escape of vapor into the engine room. British Sepa- rators Ltd., London, showed a range of Vickcen separators and oil puri- fiers such as are used for the treat- ment of fuel oil for diesel engines on vessels. These purifiers are of the enclosed type. High pressure water gages and piston valves were displayed by Richard Klinger, Ltd., London, who manufacture a special jointing under the name of Klingerit. This firm operates a branch in New York, at 16 Hudson street. Beck and Co., Ltd., Southwark, London, also showed Klinger steam _ valves, and boiler mountings were displayed by J. Shaw, Son and Greenhalgh, Ltd., Huddersfield, and by H. L. Mason, London. Walter Kidde and Co., Inc., New York and London, exhibited an ex- ample of Lux-Rich system for de- tecting and extinguishing fires in the cargo holds of ships. A smoke detect- ing cabinet is installed in the wheel- house of the vessel and connected to the holds by means of piping. The presence of smoke from a fire is shown in the cabinet in conjunction with which a battery of CO, cylinders centrally controlled floods any hold with dry carbon-dioxide gas. Simonis Ltd., London, showed a_ continuous foam generator for extinguishing fires; this apparatus consists of one gener- ator with a controllable connection 52 for water inlet from a pump, a hop- per at the top into which a single powder is fed as the apparatus is used and an outlet through which the water and powder mixed leave in the form of foam. The same firm displayed a deep lift pump for salv- age work. Electric Generating Sets Electric lighting plants and gener- ating sets were an important feature of ,the. show. Stuart Turner, Ltd., Henley-on-Thames, showed lighting plants specially fitted with a plunger type circulating pump for marine use. Ruston and Hornsby, Ltd., Lincoln, displayed a 165-kilowatt marine aux- iliary generating set, as supplied to the Houlder line vessels; in additon there were a three-cylinder marine propulsion engine and_ centrifugal pumps. A complete motor generator set, comprising a 1200-horsepower direct current motor, driving an al- ternator was shown by C. A. Parsons and Co., Ltd., Newcastle-on-Tyne. Generators. were also displayed by Fiat British Auxiliaries, Ltd., Lon- don, and by the Sunderland Forge and Engineering Co., Ltd., Sunderland. Special electrical equipment was dis- played by Hackbridge Electric Con- struction Co., Ltd., Walton-on-Thames, and wireless equipment by Radio Communication Co., Ltd., London. Edison Accumulators Ltd., London and Electro-Mechanical Brake Co., Ltd., West Bromwich, displayed accu- mulators and grid resistances. Several stands were occupied by manufacturers of recording instru- ments who displayed the latest types used in industry as well as on board ships. The Cambridge Instrument Co., Ltd. London, had arranged typical groups of instruments mounted on panels, as they would be actually installed in a vessel. They included electrical CO, and CO indicators and recorders, apparatus for recording the percentage of dissolved oxygen in boiler feed water, draft and pressure gages, temperature measuring instru- ments, etc. A model bridge deck was arranged by 8S. G. Brown, Ltd., North Acton, London, showing the automatic helms- man, a new type 360 degrees course recorder, a new rudder angle recorder, a bearing repeater compass, and electro-megaphones. There were also the Brown master gyro compass and auxiliaries. Barr and Stroud, Ltd., Glasgow, displayed their rangefinders and marine glasses. Various record- ing instruments, including a dial con- tents gage for measuring the depth or volume of fuel oil tanks, recording thermometers for ships’ refrigerators, MARINE REVIEw—October, 1927 dial thermometers for diesel engine exhaust temperatures and for funnel base temperatures, dial draft gages, were exhibited by Negretti and Zambra, London. Sperry Gyroscope Co., Ltd., London, demonstrated their gyro system with the Sperry gyro-compass equipment, the automatic steering equipment, and the Sperry gyro ship stabilizer. The Electric Submerged Log Co., London, showed three types of their logs, to- gether with a set of distance recorders and speed indicator repeaters. Ever- shed and Vignoles, Ltd., Chiswick, London, displayed their helm indi- cators and marine signalling apparatus. Henry Hughes and Son, Ltd., London, displayed their filament card com- | pass which is claimed to be free from oscillation, and an improved echo depth sounding apparatus. Ship’s telegraphs and other electrical equipment was shown by Siemens Bros. and Co., London. The Telephone Manufactur- ing Company, Ltd., West Dulwich, London, showed the laryngophone, a telephone especially constructed for use in the noisy positions on board ships. C. A. Vandervell and Co., Ltd., Acton, London, showed an _ electric lighting equipment for buoyant ap- paratus. There were many exhibits relating to general engineering and more or less closely related to marine work. These included accumulators and bat- teries, handling equipment, acetylene’ and are welding plant, packings, lub- ricating boxes for propeller shafts, paints and spraying equipment. August Lake Levels The United States Lake survey re- ports the monthly mean stages of the Great Lakes for the month of August as follows: Feet above Lakes mean sea _ level Superior Michigan-Huron St. Clair Erie Ontario Lake Superior was 0.08 foot higher than in July and it was 1.75 feet higher than the low August stage of a year ago. Lakes Michigan-Huron were 0.09 foot lower than in July and were 0.85 foot higher than the August stage of a year ago. Lake Erie is 0.15 foot lower than in July and it was 0.71 foot higher than the August stage of a year ago. Lake Ontario was 0.24 foot lower than in July (since 1860 the’ August level has averaged 0.30 foot lower than July); and it was 0.78 foot higher than the August stage of a year ago, and 0.29 foot below the average stage of August of the last ten years. Preeerrrrrrrer titers Prrrerrerrrtr itr Preeerrrerereer reer id Seen cece n arene rere seeeeeereneseeeeeeeeenee