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Glass Identification - Post here for all ID requests => Glass => Topic started by: Sklounion on December 27, 2006, 09:47:18 AM

Title: Query for Adam D (glass-forming)
Post by: Sklounion on December 27, 2006, 09:47:18 AM

Hi Adam,
I have come across the term "sacofoukanim", which as best as I can translate from the Czech, refers to a "vacuum and blow" process for forming glass.
Please could you be so kind as to elaborate on how exactly this would have been carried out? I have been trying to figure whether the vacuum stage is related to glass-feed, or integral with the forming part of the operation.
Thanks in advance,
Regards,
Marcus

Title: Re: Query for Adam D (glass-forming)
Post by: Frank on December 27, 2006, 10:33:26 AM

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

Quote

The machine is preferably of the suction-gathering type, the charge of glass being drawn into the parison mould in the dipping position by a vacuum created in the blow head of the parison mould, the blow head being connected to suction and pressure pipes controlled by automatically-actuated valves. As soon as the charge of glass has been drawn in, the vacuum valve closes and the parison mould travels from the gathering position to the transfer position, where the parison mould opens and the parison is transferred to the finishing mould.

Title: Re: Query for Adam D (glass-forming)
Post by: Sklounion on December 27, 2006, 11:07:17 AM

Thanks, Frank,
Cannot get much clearer an explanation.....
Regards,
Marcus

Title: Re: Query for Adam D (glass-forming)
Post by: Ivo on December 27, 2006, 11:09:29 AM

this might help
http://www.glassonline.com/infoserv/dictionary/614.html
or not...

Title: Re: Query for Adam D (glass-forming)
Post by: Patrick on December 27, 2006, 03:05:46 PM

hi, The link to Glassonline mentions " Illustrated Glass Dictionary "
      Where are the ILLUSTRATIONS    ???????
                PATRICK.

Title: Re: Query for Adam D (glass-forming)
Post by: Adam on December 27, 2006, 09:30:41 PM

I would only add that, so far as I am aware, suck-blow was mainly a bottle-making system.  The Grand Old Man of bottle machines, the Owens, was of this type.  The Owens appeared very early in the 20th century and was reputed (can't confirm this) to be the first fully automatic machine for making anything.  I was privileged to see probably the last of these monsters in the UK working at CWS, Worksop around 1947.  Owens, and possibly other suck-blow bottles were identifiable by a horrendous shear mark on the bottom.

Adam D.

Title: Re: Query for Adam D (glass-forming)
Post by: Frank on December 27, 2006, 09:41:36 PM

Quote from: Adam on December 27, 2006, 09:30:41 PM

Owens, and possibly other suck-blow bottles were identifiable by a horrendous shear mark on the bottom.

Interesting, I would like to see an example of such a bottom. Anyone?

Owens and similar machines lasted out a bit longer in other parts of the world.

Title: Re: Query for Adam D (glass-forming)
Post by: Sid on December 28, 2006, 03:11:26 AM

Frank:

Here is a picture:  http://www.blm.gov/historic_bottles/suctionscar.jpg

This comes from a wonderful website that covers many aspects of hand made and machine made bottles:

http://www.blm.gov/historic_bottles/

Title: Re: Query for Adam D (glass-forming)
Post by: Sklounion on December 28, 2006, 07:39:45 AM

Sid,

Thanks for these links. The main page of the BLM site shows that OI machines must have changed between 1929 and 1941, as the base of a 1941 bottle does not carry that shear mark. That would explain in part, why decorative glass could be made using this process.

I can see light at the end of this particular tunnel now.

Thanks to all of you, for your contributions.

Regards,

Marcus