In the Essen report, Fig. 3, you see the hydrogen pipe at the top of the cell, and the power lead for the resistance heater at the bottom (the red wire). I am assuming both of pass through the outer copper sleeve, and then into the inner cylindrical stainless steel container. Granted, that might be a little difficult. Water may leak from the pipe connection at the top. I think this would be easier than working with a torus shaped cell.
(By the way, the hydrogen pipe would anchor the inside cell and hold it in the center of the copper outer shell.) The configuration I have in mind is similar to the way the anode and cathode lead wires reach the cell in McKubre's labyrinth calorimeter. They go through the walls of the calorimeter at the top, and then continue through the cooling water envelope to the inner cylindrical chamber. See p. 6 here: http://lenr-canr.org/acrobat/McKubreMCHcoldfusion.pdf - Jed
