Department :
METAL STEM & Threaded bowl |
Marked on the front end cap as Columbia Silver Co , 689-91-93 McDonald Ave.Brooklyn NY Pat Apl'd for. It is in the threaded bowl section since the bowl itself has a metal nut inserted to take the screw that goes right through the shank Another design that makes it a nightmare to clean, unless done very frequently. The internal 'plunger' is a very close fit and it seems likely that left too long between cleaning the inevitable sticking of the parts must have ensued. The bowl retaining screw seems un-necessarily complicated and makes a sealed path for the smoke less likely |