METAL STEM & Screw thro bowl
Made by the Briarwood Corporation, Palo Alto, California, the BRYSON has number D120275 under the Bryson name on the pipe stem.
There is a crosshead screw to attach the briar bowl to the stem. The end cap attaches to the mouthpiece by means of a rod through the length of the pipe, in which the air hole is close to the mouth piece.
The stem is of polished duraluminum and hexagonal in cross section
The bowls are unusual in that they are not briar turned on a lathe, but briar wood, ground to a powder and compressed under very high pressure (no glue, heat or plastics are used, just pressure. It is claimed this produces a perfect bowl of aged briar every time with increased porosity. The varnished finish on the smooth bowl however is often very badly crazed. Two bowls, one smoth and one rusticated, were supplied with the new pipe. The bowl retaining screw is 'locked' onto the bowl by a gasket and metal collar, enabling rapid replacement of the bowls without the need of a screwdriver
The corn cob bowl, in centre image,is another version, not sure if this was manfactured by Bryson, or a home workshop job
The set here shown was available for $3.50 new, but in what year ? Adverts seen from 1946 magazine
The lower photograph was of a possible derivative on ebay in 2003, although US patent D122042 seems to be this pipe, invented by Max Bressler, Chicago Ill 1940
There are also other derivatives without the Bryson name stamped in the metal and variations on the shape and grooving of the stem
That with Pat Pend under the Bryson name has no grooves forward of the bowl and the front end cap is a larger thread than the other models, including my version with no name
30 April 1940 US patent # D120,275 Inventor Charles Rothman, Cleveland Heights, Ohio, assignor Briarwood Corp, also of Cleveland Ohio at that time