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Figure 6-4- Phleger corer assembly. 

 H. O. 607 



Two stoppers or plastic caps are used for each 

 sample. 



6. Bottom sample jars (enough sample 

 jars, 4- to 8-ounce ointment jars are satis- 

 factory, as needed to conduct the coring pro- 

 gram for a survey cruise). One jar is needed 

 for each sample. The sediment retained by the 

 core catcher and nosepiece is stored in a sample 

 jar. 



7. Glass wool, used to pack the unfilled 

 portion of the plastic liners above the core 

 samples. 



6-14 Tools Needed to Operate the Phleger 

 Corer. — The Phleger corer is easy to assemble 

 and operate and usually requires few tools. A 

 pair of eight-inch combination pliers, a pipe 

 wrench, and a small saw or sharp knife to cut the 

 plastic liner is all that is needed for most 

 operations. 



6-15 Assembling the Phleger Corer for 

 Operation. — The first step in assembhng the 

 Phleger corer for operation is to screw the 

 threaded end of the coring tube into the main- 

 weight. Make siu-e that the check valve is 

 operating properly as improper operation may 

 be the cause of short samples or the washing 

 out of the entire core. Measure the length of the 

 core-catcher ring and that part of the cutting 

 edge which fits into the coring tube. Next in- 

 sert a length of plastic liner into the corer as far 

 as it will go and scratch a mark on it flush with 

 the end of the coring tube. Pull the liner out a 

 distance exactly equal to the length measured 

 (probably about one-half inch) and cut or saw 

 the plastic liner flush with the end of the coring 

 tube. If the liner is too long, it will not be pos- 

 sible to seat the cutting edge in the bayonet 

 grooves. If it is too short, there wiU be play in 

 the liner with resultant loss of the bottom sam- 

 ple when the liner is removed after lowering. 

 Now, reinsert the liner and insert the core 

 catcher and cutting edge. Make sure that there 

 is a tight fit of the bayonet to prevent loss of the 

 cutting edge. If it is loose, it is advisable to 

 wedge the groove with a small chip of wood to 

 prevent turning. The corer is now ready to be 

 attached to the release mechanism. 



6-16 Rigging the Release Mechanism. — 

 Secure the trigger line and weight to the end 

 of the releasing arm. Next shackle the free 

 fall chain to the bottom shackle on the release 

 mechanism and to the bad on the mainweight 

 of the corer. Shackle the top of the release 

 mechanism to the lowering wire. Insert the 

 bail of the corer into the slot in the release 

 mechanism so the release arm is able to support 

 the full weight of the corer. As soon as this is 

 done it is important to insert the safety pin in 



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