Prolixin open bottle dating

26-Oct-2020 21:48

The gaffer makes the gather from the glass pot/tank in the background, rolls and pre-forms the parison on the marver (table to the left), then quickly drops the parison into the mold which the mold boy efficiently snaps shut.The gaffer quickly inflates the bottle and efficiently bursts-off the blowpipe while pulling the blowpipe away from the mold.(This is particularly interesting to see and shows that shearing or cracking-off wasn't always used or necessary.) The mold boy then removes the bottle from the mold with tongs while the gaffer knocks off the residual glass from the end of the blowpipe and then moves back to the glass pot/tank to make another gather.

In front of the gaffer in this image (to his right) is the chair where much work was done with blowpipe manipulation prior to lowering the parison into the mold.There are several different type pontil marks, all of which are a mark or scar on the bottle base left by a type of pontil rod.There is a lot variety possible within each category of pontil marks.Their quantities would be very small in any post-1920 archeological assemblage." The following link is to an amazing early 20th century film clip of a mouth-blown "shop" blowing bottles.It shows two gaffers and one mold boy in smooth and efficient action.

In front of the gaffer in this image (to his right) is the chair where much work was done with blowpipe manipulation prior to lowering the parison into the mold.There are several different type pontil marks, all of which are a mark or scar on the bottle base left by a type of pontil rod.There is a lot variety possible within each category of pontil marks.Their quantities would be very small in any post-1920 archeological assemblage." The following link is to an amazing early 20th century film clip of a mouth-blown "shop" blowing bottles.It shows two gaffers and one mold boy in smooth and efficient action.Typical examples of the 3 major pontil types - glass-tipped or "open" pontil scar, iron or "improved" pontil scar, and sand (disk) pontil scar - are pictured to the right.