ADDENDUM C-6 

 Clamshell Dispensing Apparatus 



The clamshell dispensing apparatus, shown in Fig. C-13,was designed 

 to dispense k-0 liters of sand on the ocean floor. The basic construction 

 is 16- gage stainless steel. A "bridle constructed of l/k- in. -thick nylon 

 rope is used to lower the apparatus to the ocean bottom. The length (~3 

 ft) of the bridle must be adjusted under load to ensure that a proper 

 opening force exists. When the device is lowered and makes contact with 

 the bottom, the latching pins are disengaged. The weight of the drum 

 and contents causes the apparatus to open, releasing the sand. Two plugs 

 located in one end of the device are used for filling. In order for the 

 device to sink, three small plugs in the top of the device must be opened, 



C-33 



