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 Glass Question at our Rakow Research Library.

Pages

Core forming
Glass Dictionary Term

The technique of forming a vessel by winding or gathering molten glass around a core supported by a rod. After forming, the object is removed from the rod and annealed. After annealing, the core is removed by scraping. Coreforming Core formed Core-formed Core form Coreform Core forms Core Formed

Cowhorn
Glass Dictionary Term

The large end of a mosaic glass cane that is shaped like the tapering horn of a cow. Cowhorns

Cracking off
Glass Dictionary Term

The process of detaching the unwanted portion of the parison from the blowpipe and the intended rim. cracks off cracked off

Creamer
Glass Dictionary Term

A small pitcher for serving cream. creamers Creamer

Collar
Glass Dictionary Term

(1) A band of applied glass around the rim of a vessel. On bottles, the collar is used to secure the cork. (2) A threaded metal ring around the font of a lamp, used to attach a screw-in burner. collars Flask

Colored glass
Glass Dictionary Term

Glass that is colored by (1) impurities in the basic ingredients in the batch or (2) techniques of coloring glass by one of three main processes: (a) using a dissolved metallic oxide to impart a color throughout, (b) forming a dispersion of some substance in a colloidal state, and (c) suspending

Combed decoration
Glass Dictionary Term

A wavy, festooned, feathery, or zigzag pattern of decoration in two or more colors, produced by applying threads of opaque glass of a color different from that of the molten glass body. The threads are rolled into the glass body by marvering, after which they are combed or dragged to achieve the

Commedia dell’arte figures
Glass Dictionary Term

(from Italian) Figures representing the 16 characters in Italian commedia dell’arte, a theatrical genre that was especially popular in the 17th and 18th centuries. Flameworkers made models of these figures, often copying illustrations in Lelio Riccoboni’s Histoire du théâtre italien (1728-1731).

Compote
Glass Dictionary Term

A dish, usually with a stem and a base, and sometimes with a cover, for serving compote (fruits cooked in syrup), or a smaller dish of similar form used for individual servings. compotes Compote

Concentric paperweight
Glass Dictionary Term

A type of paperweight in which the slices of canes are arranged in concentric circles. Concentric paperweights Paperweight with Concentric Millefiori Mushroom

Condiment set
Glass Dictionary Term

A group of matching vessels, usually with a tray or rack, that includes containers for salt, pepper, and mustard, and perhaps also cruets for oil and vinegar. Condiment sets Castor

Cone beaker
Glass Dictionary Term

A drinking vessel in the form of an inverted cone. Cone beakers were used in several cultures, including ancient Rome, Sasanian Iran, and early medieval Europe. Cone beakers sturzbechers sturzbecker sturzbeckers Sturzbecher Cone Beaker

Copper-wheel engraving
Glass Dictionary Term

A technique of decorating the surface of an object. Copper disks (wheels) of various sizes and rim profiles are rotated on a spindle. An abrasive such as Carborundum (in the past, emery was frequently used), mixed with oil, is applied to the edge of the wheel. The wheel presses the abrasive against

Cord
Glass Dictionary Term

A part of the glass that differs in composition from the surrounding matrix. This difference produces a change in the refractive index, which enables the cord to be seen as a streak and so spoils the appearance of the glass.

Coil base
Glass Dictionary Term

A trail of glass drawn out to form a ring or conical foot on which the vessel stands. Tall Beaker (Stangenglas)

Coin weight
Glass Dictionary Term

The term popularly applied to Islamic coin-shaped weights or tokens, most of which were made in Egypt between the eighth and 12th centuries. Coinweights Coinweight Coin weights

Cold colors
Glass Dictionary Term

Pigments applied as decoration to glass by cold painting. Portrait Medallion of Louis XIV

Cold painting
Glass Dictionary Term

The technique of decorating an object by applying paint such as artists use on other materials. This is in contrast to enameling, in which powdered glasses of various colors are fused to the surface by heating. coldpainting cold paint coldpaint coldpainted cold painted cold-painted Enamel Portrait

Cold working
Glass Dictionary Term

The collective term for the many techniques (such as copper-wheel engraving and cutting) used to alter or decorate glass when it is cold. coldworking cold worked cold-worked cold works coldworks

Chandelier
Glass Dictionary Term

(from French, “candlestick”) A lighting fixture suspended from the ceiling, with two or more arms bearing lights (originally, candles) or two or more pendent lights. Many chandeliers have faceted lead glass arms, candle cups, shafts, and prisms, which reflect the light and sparkle like tiny mirrors

Chimney
Glass Dictionary Term

A glass tube, open at both ends, used to shield the flame of an oil lamp, to trap soot, and to increase the draft. chimneys Kerosene Lamp

Cinerary urn
Glass Dictionary Term

A vessel for cremated human remains. In the Roman period, cremation was a widely used method of disposing of the dead, whose ashes were sometimes placed in glass cinerary urns. Cinerary urns Cinerary Urn

Cintra
Glass Dictionary Term

A type of decorative glass developed by Frederick Carder (1863-1963) at Steuben Glass Works in Corning, New York, before 1917. Most Cintra glass was made by picking up chips of colored glass on the parison and then casing them with a thin layer of (usually) colorless glass. Cintra Vase

Clamp
Glass Dictionary Term

A tool sometimes used instead of a pontil to hold the closed end (usually the bottom) of a partly formed glass vessel while the open end (usually the mouth) is being shaped. clamps Gadget

Clapper
Glass Dictionary Term

A tool consisting of two rectangular pieces of wood joined at one end by a leather hinge. There is an aperture in one of the pieces of wood, and this holds the stem of a goblet or wineglass while it is being made. The clapper is used to squeeze a blob of glass in order to form the foot. clappers

Claw beaker
Glass Dictionary Term

A beaker decorated with claw- or trunklike protrusions made by applying blobs of hot glass that melted the parts of the wall to which they were attached. The blobs were then blown outward and manipulated to resemble hollow claws. Claw beakers were made in Europe between the fifth and seventh

Clichy rose
Glass Dictionary Term

A slice of a cane depicting an open rose. Canes of this type were frequently used in paper-weights made at the Clichy factory in France in the 19th century. Paperweight with Roses and Filigree

Clutha
Glass Dictionary Term

A type of glass with air traps and specks of aventurine, patented in the 1890s by James Couper, Christopher Dresser, and George Walton. Clutha

Cluthra
Glass Dictionary Term

A type of Art Glass developed in the 1920s by Frederick Carder (1863-1963) at Steuben Glass Works in Corning, New York.

Cántaro
Glass Dictionary Term

A drinking vessel shaped like a closed pitcher, with a ring handle at the center and two spouts, a short one for filling and pouring, and a longer one through which the beverage can be poured into the drinker’s mouth. Càntir Drinking Flask (Cantir)

Pages