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Use Overhead Crates at Barge Terminal N ENTIRELY wéwW application. for overhead cranés has récert. ly been devised for the Mead+Johnson barge terminal at Evansville, Ind. To facilitate loading and unloading, a steel cantilever roof has Leen built to extend over the barges at the wharf. This structure provides parallel run- ways for two electric cranes, used for unloading materials in covered storage space and reloading on trucks and cars. The absence of center col- umns, as shown in the accompanying illustration, makes it possible for the two cranes to operate in tandem, us- ing three or four hooks where ex- Overhead cranes at the Mead-Johnson barge terminal, Evansville, Ind. tremely long pieces must be handled. These cranes, built by the Harnisch- feger Corp. Milwaukee, each have a span of over 58 feet, a vertical lift of 75 feet and a capacity of 10 tons. Due to the low costs of water transportation in the Central and Southern states, barge traffic has been increasing on the navigabl rivers, presenting a real problem in economical docking and warehousing. The faster loading and unloading at the Mead-Johnson terminal has not only speeded up barge traffic but re- duced docking charges as well. Fluid Power Described N PREPARING a new catalog de- | scribing its Hele-Shaw pumps, mo- tors and transmissions, the American Engineering Co., Philadelphia, has originated the term ‘‘fluid power’ to differentiate the Hele-Shaw pump from a great variety of pumps gen- erally, with which it has little in common. This pump belongs to a_ special class, designed to furnish high pres- sure energy which can be translated into variable, reversible linear mo- tion through a ram or variable, re- versible rotary motion through a hydraulic motor. As fluid power, hydraulic power is more easily understandable—especi- ally when, as in this catalog, its re- semblance to electric power is care- fully drawn. It is clear that fluid power can be used to advantage in many applications. where a. flexible and controllable source of energy is needed: The..operation, of the Hele-Shaw DUBEDSy, Hag, , been. reduced to. simple. diagsams, and’ deseription in order to recend,| aa’ and the, ef (ny - broduce “stroking.” A. spesial’ marine tion in this cataleg ig, devoted x use of fluid power fer shiphoars % auxiliaries. Steel Hagnieniant Mee. Co., Jenkins. Areade building, Pittsburgh, Pa. » has. : been appointed distributor in the Pittsburgh area for the.Ashton Valve Co., Boston. The Shipowners association of the Pacific coast will hold its annual con- vention in San Francisco, Sept. 26. Self Aligning Coupling SELF-ALIGNING coupling for use in direct connected drives has been developed by the Alloy Products Corp., Waukesha, Wis. It is self adjusting so as to compensate for parallel as well as angular mis- alignment. In tests the new couplings have operated satisfactorily with parallel misalignment of as much as 5/16- inch and with angular misalignment of 3 to 6 degrees. They may be used at any speed. A typical example of many applications is on a 10-horse- power motor drive operating at 5600 revolutions per minute. The new coupling plays the part of a safety valve between the motor and drive bearings and its use is said to eliminate the necessity for shim- ming in order to obtain and main- tain accurate alignments. It operates noiselessly and is said to reduce power losses. The new coupling, as shown in the illustration, is made in four parts. Two of them are driving hubs into whose faces round lugs are set, two in each hub. When assembled, the lugs fit in recesses in the periphery of the third part, a drive disk made of bone fiber. ThesSe recesses are made long so as to permit the lugs to slide in them. © Use of this coupling is said to eliminate necessity for shim- ming in obtaining and maintaining alignment. It ad- justs itself both to parallel and angu- lar misalignment ® MARINE REvIEW—September, 1935 —— ly the behavior ofa pump of this.type, on ‘Suction, and, discharge, Cutting Irregular Shapes on Oxy-Acetylene Machine SIDE roller attachment for its No. 4 radiagraph, a portable, motor driven, oxy-acetylene cutting machine was recently perfected by the Air Reduction Sales Co., 60 East Forty-second street, New York. By means of this attachment and a templet shaped to guide the machine and torch over a desired outline, as shown in the accompanying illustra- tion, ‘the tadiagraph is adapted for analy accurate cutting of irreg- apes, involving long, sweeping ber simple or compound. By means of new side roller attachment this portable radiagraph is adapted for cutting irregular shapes with reasonable accuracy The side roller attachment is an as- sembled unit, made either right or left hand, and is attached to the side of the radiagraph by means of ma- chine screws. The design of the attachment places one of the rollers at a greater distance from the body of the radia- graph than the other so that when both rollers are in contact with the templet the machine faces slightly in. As a result, the machine, as it travels along, is continually tending to move in toward: the templet, exert- ing a pressure which forces it to fol- low the templet either.in a straight line or around a ct Left hand and ments make possi of a templet which of two machines sim ATING bisc —