Topic: Terminology: Parison

[Frank]

Re-reading the other day I rediscovered the the Ysart's term for Parison, partly blown gather, was 'Small Ball'. Presumably the latter was the term used in one of the Scottish glassworks that they worked in after leaving France.

Nailsea Glassworks called it 'Boister'.

French: Paraison. French Dictionary english translation = Gob or Drop.

In pressed glass it is also used but is essential the partly inflated gather inserted into the mould, but I have seen the term Parison mould :huh:

Free dictionary definition parison

What other terms are used for the Parison? Including other languages as well as glassworks and through time?

A useful dictionary for glassies.

[Adam]

Parison is not the same as gob.  The latter is the uniform lump dropping from the feeder into the bottle machine.  Parison (blank in USA) is the partly blown article prior to transfer from the parison/blank mould to the "blow" (i.e. final blow) mould.

Frank, the gather/gob dropped into a hand press mould is never part blown - it couldn't be as the gathering iron is solid.  Anyway, who would want to?

Written in haste at (my) bed time.  Am I missing something here?

Adam D.

[krsilber]

When I've come across it (or looked it up), it's meant a partially inflated bubble of glass (before any moulding usually).

Parison (blank in USA) is the partly blown article prior to transfer from the parison/blank mould to the "blow" (i.e. final blow) mould.

Is parison/blank mould like a dip mold?  And does that mean parison refers to something that has been shaped somewhat already?

Perhaps "blank" is used in the industry here that way, but I've never seen it.  The "blank" I'm used to refers to the glass shape of an item intended for decoration.

[Adam]

The principles of bottle making on automatic machines are quite simple, although the machines themselves certainly aren't!  A sequence of diagrams quickly demonstrates the process and at the same time shows exactly what is meant by parison/blank.  Explaining it in words without the pictures is nearly impossible.  The diagrams appear in many books and I know I have seen them on line somewhere.  Now, however, just when I need them to answer this query I can't find them with an admittedly quick search.  Can anyone help, please?

Adam D.

[aa]

http://www.britglass.org.uk/AboutGlass/GlassForming.html#3

There is a pdf half way down which may help.

[Frank]

This shows some 1920s/30s machines with some description of how they worked.
http://www.ysartglass.com/Moncrieff/MoncrieffMonish.htm

and these patents better diagrams and more detailed description.

http://www.ysartglass.com/Moncrieff/Patent/Patuk320034.htm
http://www.ysartglass.com/Moncrieff/Patent/Patuk542677.htm

I have a few more still to be added.


I should add that this thread is to explore the different uses of this term in different places and different times, as well as alternate words, for historical record and an aid to understanding old as well as new glass technology texts.

It is not intended to create a definition how the term may or may not be used now. Nor right and wrongness!

[Frank]

Is there a single German word for Parison?

Using Eurodico it is not given on its own:

   Parison gatherer (Eng) = Anfänger (Deutsch)
        Parison, Blank (Eng) = Külbel (Deutsch)
        Parison mould (Eng) = Vorform, Füllform (Deutsch)

A 1910 Multi-lingual glossary does not include it.

[krsilber]

I just found an online book about glassmaking that has rather nice drawings of the suction-and-blow, blow-and-blow and press-and-blow mechanical processes, pg 35 and 36 of the book, or 42 and 43 of the pdf file:  http://www.sha.org/documents/Parks_Canada/The%20Parks%20Canada%20Glass%20Glossary.pdf

Frank, there are also some motif names and drawings!  Nothing much new there, but kind of interesting to see.