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Cutting Machine Developed Of Improved Type NNOUNCEMENT has been made A of a new addition to its large line of oxy-acetylene cutting ma- chines by the Linde Air Products Co., 30 East Forty-second street, New York. Every effort has been made to make it a perfect example of machine design. lt is of rugged construction and is streamlined to facilitate both operation and main- tenance. It is readily portable, and is adjustable through the _ entire New Oxy-Acetylene Cutting Machine range of oxy-acetylene cutting. All the working elements are enclosed in a double cover. The new machine will do automa- tic straight line cutting of practically unlimited length, straight bevel cut- ting, two bevels at a time if desired, plate edge preparation, circles or ring cutting of diameters up to 100 inches and the cutting of curved or irregular shapes. It should prove ex- tremely useful to shipbuilding and ship repair yards. The slide for the blow pipe holders is constructed so that it may be swung instantly into any horizontal position over a working are of 250 degrees. Protractor scales gage the tilting of the blow pipes in either direction parallel to the side of the machine through 90 degrees and up to 90 degrees at right angles from the side. Twin Rail Carries rm OTH on ships and terminals ap- B plications are being made from time to time of mechanical equipment to facilitate cargo handling. In this connection it is of interest to call at- tention to the twin rail system de- veloped by Joy Mfg. Co., Franklin, Pa. As shown in the accompanying illustration this system is constructed with a swival at track tread level, providing perfect carrier alignment, maximum traction and automatic embankment on curves. The twin Overhead Twin Rail System rails are supported on various types of fittings having a large factor of safety for varying loads and are con- structed to meet overhead convey- ing conditions, as for instance in the *tween decks of a ship. Graphite Lubrication OR facilitating the use of graphite for lubrication the Joseph Dixon Crucible Co., Jersey City, N. J., has developed a practical type of air gun shown in the accompanying illustra- tion. The new device is made of rubber. When squeezed it deposits graphite where needed in measured amounts through positively controlled air pressure. The amount of graphite is controlled by the position of the nozzle in relation to the dial on top of the gun. The nozzle may be turned to a complete shut-off position, making it possible to carry this gun in tool kits without spilling the graphite. A plug fitted to the bottom of the gun and easily snapped in and out carries a disk of chamois for use as a burnisher. The device comes filled ready for use, but when necessary to refill, the head may be quickly un- screwed through which is inserted the easy pour chute spout which is attached to the refill cans of graphite furnished by the manufacturer. Gun for applying graphite lubrication MARINE REVIEwW—February, 1935 Motor Driven Pumps of Recent Design N ELECTRIC drive, or, as it is called, motor pump, of Cameron type is now being manufactured by the Ingersoll-Rand Co., Phillips- burgh, N. J., in 26 sizes ranging in horsepower from % to 30 and in capacities from 5 gallons per minute to 1000 gallons per minute. One of these two-stage motor pumps, for capacities up to 125 gallons per min- ute against heads of 450 ‘feet, is shown in the accompanying illus- tration, Certain sizes of these pumps are Two-stage motor pump. Capacities wp to 125 g.p.m. against heads of 450 ft. two stage units and some other sizes are fitted with a self-priming at- tachment, which makes them suitable for use aS Sump or gathering pumps. The company has issued a fully il- lustrated description of this type of pump, together with tables of capaci- ty and performance data. The motor pump is a complete pumping unit, with built-in electric motor and pump rotor on the same shaft. Becaues of its perfect balance, al- most no foundation is required and it can be operated equally well in any position. New A. C. Current Welder NEW alternating current welder has been developed by the Lin- coln Electric Co., Cleveland. The new welder is of revolutionary de- sign, of motor generator type, taking two or.three phase alternating cur- rent of standard voltages and fre- quencies, and converting it into al- ternating current of lower voltage and higher frequencies, most suitable for are welding with either heavy coated or washed electrodes in all positions. With this innovation the the machine is of the most practical type. Some of the advantages claimed for the new welder are: a more stable arc, less magnetic blow, easier starting of arc, less spatter loss, greater density, and finally better power characteristics from the line. The new machine is built in por- table and_ stationary, alternating current motor driven in two sizes. 27