Jacks are a glassblower's hand tool shaped somewhat like a large pair of tweezers, with two blades hinged together, used to shape a piece of molten glass later in its forming, opening and closing the blades against the rotating glass on the blowpipe or punty to narrow, groove or refine its shape. They are one of the small set of hand tools, alongside the blowpipe, the punty and the marver, that a glassblower works a piece with at the bench.
Facts
Partially Attested
Introduced When (Circa)Source dates the invention of glassblowing itself to this period, and Wikipedia's Glassblowing article names jacks as a tool of the craft, but it does not separately date when jacks specifically entered use. OriginPhoenician and Syrian craftsmen, in territory that became part of the Roman Empire 1 Source attests the geographic origin of glassblowing generally, Phoenician and Syrian craftsmen in territory that became part of the Roman Empire, and Wikipedia's Glassblowing article separately names jacks as one of the craft's tools, but it does not give a separate origin claim for jacks as a distinct tool. Introduced era (class) Connections
Used In
Jacks are the tweezer-like tool a glassblower uses to shape molten glass during forming.
Source Glassblowing (Wikipedia)
In the Other Atlases
Sources
1. Glassblowing, Wikipedia
History section, paragraph beginning "In the first century BC"
In the first century BC, Phoenician and Syrian craftsmen developed the technique of blowing air into molten glass with a blowpipe, making it into a bubble and thence moulding it into a great variety of forms.
History section, paragraph beginning "The invention of glassblowing coincided"
The invention of glassblowing coincided with the establishment of the Roman Empire in the 1st century BC, which enhanced the spread and dominance of this new technology.
View the SourceGlassblowing (Wikipedia)
Wikimedia FoundationUsed In: Glassblowing, Glassblowing, Tools sectionQuote, Used In: Glassblowing, Glassblowing, Tools section
Jacks are tools shaped somewhat like large tweezers with two blades, which are used for forming shape later in the creation of a piece.
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