All About Glass

All About Glass

This is your resource for exploring various topics in glass: delve deeper  with this collection of articles, multimedia, and virtual books all about glass. Content is frequently added to the area, so check back for new items. If you have a topic you'd like to see covered, send us your suggestion. If you have a specific question, Ask a Librarian at our Rakow Research Library.

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Head flask
Glass Dictionary Term

A mold-blown flask with the body in the form of a human head. Head flasks were popular in the Roman Empire, and examples were made from the first to fourth centuries A.D. Vessels decorated with two faces placed back to back are sometimes known as “janiform” head flasks (from Janus, the spirit of

Hausmaler
Glass Dictionary Term

(German, “home painter”) A decorator who enameled glass or porcelain while working from home independently of the manufacturer. Hausmalers Beaker on Ball Feet

Hand press
Glass Dictionary Term

A tool shaped like a pair of pliers, with flat jaws containing molds. Hand presses were used extensively in Europe for making chandelier parts. Later, they were introduced in the United States for pressing stoppers and bases. hand pressed hand presses

Hand cooler
Glass Dictionary Term

A solid, egg-shaped piece of glass or decorative stone, said to have been used to cool the palms of a woman’s hands. Hand coolers Hand Cooler Paperweight with Pompons

Guinand
Glass Dictionary Term

A fire-clay pot used in the manufacture of optical glass. It is named after its inventor, Pierre Louis Guinand (1748-1824). guinands

Grinding
Glass Dictionary Term

The technique of removing the surface of an object with a rotating wheel fed with an abrasive, or by some other means. grind grinds

Grenade
Glass Dictionary Term

A type of bottle with a short, narrow neck and a globular body, which apparently was filled with water and thrown into flames to serve as a fire extinguisher. Aeolipiles are sometimes identified, probably incorrectly, as grenades. grenades Grenade

Grape flask
Glass Dictionary Term

An ancient Roman mold-blown flask with the body in the form of a bunch of grapes. grape flasks Grape Flask

Gold-band mosaic glass
Glass Dictionary Term

A variety of ribbon glass that includes canes composed of bands of gold foil laminated between two layers of colorless glass. Gold-band mosaic glass was made in parts of the Roman world in the first century B.C. and the first century A.D. gold band mosaic glass Bottle

Goblet
Glass Dictionary Term

A drinking vessel with a bowl that rests on a stemmed foot. goblets 2 Enameled Goblets

Glory hole
Glass Dictionary Term

(1) A hole in the side of a glass furnace, used to reheat glass that is being fashioned or decorated; (2) a separate appliance for reheating glass. glory holes

Glazier
Glass Dictionary Term

A craftsman who paints and/or assembles glass windows. glaziers

Gilding
Glass Dictionary Term

The process of decorating glass by the use of gold leaf, gold paint, or gold dust. The gilding can be applied with size, or amalgamated with mercury. It is then usually attached to the glass by heat. Gold leaf can be picked up on a gather of hot glass. gild gilds gilded Deep Blue Gilded Bowl

Gathering iron
Glass Dictionary Term

A long, thin rod used to gather molten glass. gathering irons

Gather
Glass Dictionary Term

(Noun) A mass of molten glass (sometimes called a gob) collected on the end of a blowpipe, pontil, or gathering iron; (verb) to collect molten glass on the end of a tool. gathers gathered

Garage
Glass Dictionary Term

A heating chamber used to hold parts of objects that are intended to be assembled on the blowpipe while other parts are being made. garages

Gaffer
Glass Dictionary Term

(corruption of “grandfather”) The master craftsman in charge of a chair, or team, of hot-glass workers. gaffers

Fusing
Glass Dictionary Term

(1) The process of founding or melting the batch; (2) heating pieces of glass in a kiln or furnace until they bond (see Casting and Kiln forming); (3) heating enameled glasses until the enamel bonds with the surface of the object. fuse fuses fused Casting Kiln forming Lily-pad Pitcher

Furnace
Glass Dictionary Term

An enclosed structure for the production and application of heat. In glassmaking, furnaces are used for melting the batch, maintaining pots of glass in a molten state, and reheating partly formed objects at the glory hole. furnaces

Former mold
Glass Dictionary Term

A mold with the same shape as the desired object, usually a vessel. Flat glass blanks are made into vessels by sagging them over or into former molds. Former molds Dish and Mold

Forgery
Glass Dictionary Term

A copy or imitation of an object, made with the intention of deceiving prospective owners into believing that it is the genuine article. forgeries

Foot
Glass Dictionary Term

The base of an object; the part on which it rests. feet Roman foot Goblet with Grotesque Decoration

Font
Glass Dictionary Term

The reservoir for oil in a lamp. fonts Whale Oil Lamp

Flux
Glass Dictionary Term

A substance that lowers the melting temperature of another substance. For example, a flux is added to the batch in order to facilitate the fusing of the silica. Fluxes are also added to enamels in order to lower their fusion point to below that of the glass body to which they are to be applied.

Flute
Glass Dictionary Term

A very tall and slender wineglass on a short stem. flutes Flute Glass

Flat bouquet
Glass Dictionary Term

A decorative arrangement of canes in a paperweight. The canes imitate a bouquet of flowers and leaves, the flat top of which is parallel to the bottom of the paperweight. flat bouquets

Flashing
Glass Dictionary Term

(1) The application of a very thin layer of glass of one color over a layer of contrasting color. This is achieved by dipping a gather of hot glass into a crucible containing hot glass of the second color. The upper layer may be too thin to be worked in relief. “Flashing” is sometimes used

Firing glass
Glass Dictionary Term

A drinking glass with a bowl, a short stem, and a thick foot. On ceremonial occasions, firing glasses were rapped loudly on the table, making a noise that resembled a volley of gunfire. Firing glasses Beefsteak Club Firing Glass

Fire polishing
Glass Dictionary Term

(1) In the hotshop, the reintroduction of a vessel into the glory hole to melt the surface and eliminate superficial irregularities; (2) in kiln working, exposing the object to significant heat so that it assumes a smooth surface. fire polish fire polished fire polishes

Finial
Glass Dictionary Term

An ornamental knob. finials Engraved Covered Beaker

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