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Lightly purples antique commemorative platter

In the 1860s the formula for making pressed glassware changed. Manganese was substituted for lead to act as a stabilizer and to make the glass brighter and clearer.  Nearly every major American glass manufacturer used manganese dioxide for such a purpose until 1915, when industrial chemists realized that selenium made for a better stabilizing/clarifying agent.

Manganese glass under blacklight

Because of the nature of manganese, the glassware manufactured during the late nineteenth century has some unique properties.  Original manganese glassware glows brightly under a blacklight (although vaseline glass, glass tinted yellow with uranium does the same thing).  When exposed to the sun over the years, as in a bright kitchen or a window, manganese glass takes on a slight amethyst purple cast.  Glass objects with a faint hint of sun purple betray their provenance, but they also lose some value–since antiques dealers regard the effect as “discoloration”.

Vintage “Sun Purple” teacup

However, some people became obsessed by the sun purple effect and put their antique glassware outside for months in order for it to fully turn cloudy purple in the sunlight.  This “solarized” glassware could then be sold to novice antiques collectors (often with a little card explaining “sun-purpling”).  Dealers realized that the causative factor behind the color change was ultraviolet radiation, and so instead of putting glass outside they exposed it to radiation from UV sterilizers (a common anti-microbial tool in bio labs and hospitals).  As you read this, somewhere out there is a room full of ornate glass pitchers, sugar dishes, and goblets being irradiated with blistering ultraviolet waves!

A germicidal cabinet!

Seasoned glass dealers are aghast at the practice, which leaves everything a murky washed-out pale purple.  Additionally there is glass currently being deliberately manufactured to resemble the manganese purple solarized glass.  To confuse the issue even further, there is also glass manufactured in a robust shade of purple (for people who like purple) which is named “amethyst” glass.

Antique “amethyst glass” pedestal vases (always meant to be purple)

It has been a long time since Ferrebeekeeper added a new post to the gothic category.  In order to remedy that deficit (and perhaps to focus somewhat on the strange & troubling nature of time itself) here is a gallery of gothic clocks.  Something about the ornate yet solemn gothic style seems particularly suited to instruments which measure the passing of time.  Until recently, clocks were precious and expensive items and it was very appropriate to dress them up in stylish little reliquary-style cases.  Additionally, like churches or crypts (which were frequently constructed in the same style), clocks betoken a world which transcends human understanding or control.  Nineteenth century clockmakers particularly relished the gothic aesthetic so most of the clocks below are gothic-revival era objects from England, France, or Germany. However clock makers from before the 19th century also looked to medieval sacred conventions when crafting their timepieces (as can be seen in the ancient sconce clock from 16th century Germany).  Perhaps even more strangely, modern clock-makers also frequently refer back to the gothic tradition.  At the bottom of my gallery I have included some startling resin clocks made by contemporary manufacturers. The modern timepieces might have jumped from “gothic” to “goth” but they still resemble little shrines to the omnipresent and ineluctable force of time.

Gothic Clock (Germany, 16th century AD)

Antique French Gilt Brass Boudoir Clock (Jarrot Freres)

Oak Case Gothic Revival Bracket Clock, Barraud & Lunds, Cornhill, London, c. 1838-1842

Vienna Regulator. Gothic style, probably from around 1865

Japy Freres Brass Mantel Clock (Gothic Griffons Nouveau)

Libert Gothic Cathedral Clock (French, 19th Century)

Antique Waterbury Steeple Gothic Clock (19th century)

Mahogany Gothic Double Fusee Bracket Clock by Webster Cornhill (English, 1890)

Neo-Gothic Style Partial Gilt Clock (French, 19th Century)

Oak Fussee Gothic Bracket Clock (Tiffany & Co.)

Antique Bronze Gothic Mantle Clock (Austrian, late 19th Century)

Walter Durfree 9-tube clock with Hersbhepe works and Gothic mahogany carved case.

Bielefeld Clock (the pattern is available at http://www.finescrollsaw.com)

Contemporary Resin Gothic Dragon Clock (from Dragon Artwork)

Grim Reaper Gothic Wall Clock (Contemporary, resin)

On Borrowed Time Gothic Clock (Contemporary, resin)

Contemporary Gothic Resin Clock

Contemporary Wall Clock

Ye Olde Ferrebeekeeper Archives

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