The Colorful World of Jasperware

 

QUESTION: Recently, while browsing in an antique shop, I came upon a small display plate with a Classical relief decoration. The plate looked like Wedgwood ware but its background color was sort of a pale salmon pink color with cream-colored decoration. The only Wedgwood pieces I’ve ever seen have been a light blue with white decoration. Since the price was low—the dealer said she didn’t think it was real Wedgwood but a contemporary copy—I bought it. Is this plate real Wedgwood? And if so, why the pink background color?

ANSWER: You got a real bargain. Your plate was, indeed, made by Wedgwood and because it’s pink, is on the rare side. Wedgwood introduced pink Jasperware in the late 19th century and never made it in large quantities. The pale rose color gave a delicate and romantic appearance to small decorative boxes and medallions. Today, pink pieces can sell for $500 to $1,200. 

Noted English potter Josiah Wedgwood invented Jasperware in 1774 after conducting over 5,000 carefully recorded experiments over several years.  Wedgwood made Jasperware of a dense white stoneware which accepted colors throughout its body and not just on the surface.

Usually described as stoneware, it has a smooth texture and unglazed matte "biscuit" finish. Wedgwood experimented with different colors and at first produced it in a pale blue that became known as "Wedgwood blue." Relief decorations in contrasting colors—usually in white but also in other colors—gave his pieces their characteristic  cameo effect. He produced the reliefs in molds and applied them to the ware as sprigs.

After several years of experiments, Wedgwood began to sell Jasperware in the late 1770s, at first making it in small objects, but adding vases from the 1780s onwards. It was extremely popular, and after a few years many other potters devised their own versions. 

The decoration was initially in the fashionable Neoclassical style, which became especially popular in the beginning of the 19th century. But Jasperware could also be made to suit other styles. Wedgwood turned to leading artists outside the usual world of Staffordshire pottery for designs. High-quality portraits, mostly in profile, of leading personalities of the day were a popular type of decoration, matching the fashion for paper-cut silhouettes. The wares were made into a great variety of decorative objects but not as tableware. Three-dimensional figures are normally found only as part of a larger piece, and are typically in white.

In his original formulation, Wedgwood tinted the mixture of clay and other ingredients  throughout by adding dye. Later, workers merely covered the formed but unfired body  with a dyed slip, so that only the body near the surface had the color. These types are known as "solid" and "dipped." The undyed body was white when fired, sometimes with a yellowish tinge. Workers added cobalt to the decorative elements of the pieces that were to remain white.

To add a bit of class ins marketing his ware, Wedgwood named it a after the mineral jasper.

Barium sulphate was a key ingredient. Ten years earlier, Wedgwood introduced a different type of stoneware called black basalt. He had been researching a white stoneware for some time, creating a body called "waxen white jasper" between  1773 and 1774. But this tended to fail in firing and wasn’t as attractive as the final Jasperware.

Besides its most common shade of pale blue, Jasperware came in a variety of other colors, including dark blue, lilac, sage green, black, and yellow. Sage green resulted from adding chromium oxide, blue to cobalt oxide, and lilac to manganese oxide, yellow to a salt of antimony, and black from iron oxide. Other colors sometimes appeared, including white used as the main body color, with applied reliefs in one of the other colors. The yellow is rare. A few pieces, mostly the larger ones like vases, use several colors together, and some pieces mix Jasperware and other types together.

Wedgwood dyed or stained the earliest Jasperware throughout and it has become known to collectors as "solid," but before long most pieces had colored slip applied  only on the surface. These became known as "dipped." Wedgwood first dipped his pieces in 1777 due to the high cost of cobalt oxide. By 1829 Jasperware production  had virtually ceased, but in 1844 production resumed making dipped wares. Solid Jasperware didn’t appear again until 1860.

Generally, Wedgwood made Jasperware into Neoclassical vases with heavily stylized Neoclassical cameos. Many of these cameos depict famous scenes from Greek literature and modern interpretations of Greek literature.

Shortly after discovering how to make Jasperware, Wedgwood went into business and started producing it in large quantities from a factory based in Staffordshire, England. In order to confuse potential competitors about the ingredients he used, he had the minerals for his clay ground in London, and then brought to Staffordshire in powdered form.

To discourage corporate espionage, Wedgwood made sure that no single one of his workers had a complete understanding of the process for making Jasperware, the formula for which he kept secret. By dividing up factory tasks and forcing his workers to become extremely specialized, he prevented them from becoming competitors.

Jasperware was Wedgwood’s most important contribution to ceramics. With its timeless style and class, it has become an enduring luxury material, beloved by collectors the world over for more than 250 years.

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A Place to Hang a Pocket Watch for the Night

 

QUESTION: Recently, while browsing a local antique show, I came across a dealer with a display of oddly looking little pieces. They didn’t seem to have any function and each had a large hole or cavity, so I asked her what they were. She said they were pocket watch holders. I had never seen anything like them before since pocket watches went out of style in the mid 20th century. Why would a person need a pocket watch holder? Wouldn’t they just place their pocket watch on a chest top or nightstand at the end of the day? What can you tell me about these curious little items?

ANSWER: During the 19th Century people used pocket watch holders, often referred to as a watch hutches, to hang their pocket watches in overnight to protect them from loss or damage—it’s better for the watch mechanism if it hangs vertically rather than lying flat. These watch holders also converted any pocket watch into small table or mantel clocks in a room that didn't contain a clock. They also made perfect bedside clocks, before the advent of alarm clocks.

During the second half of the 19th Century, cast iron was the most common material for making pocket watch holders. Artisans covered these unsightly cast pieces with gilded bronze to simulate gold. Artisans sculpted the original designs to represent forms in nature, such as vines and leaves or figural representations of country life. Mounted on a marble base and standing between 7 and 8 inches tall, they were quite heavy.

Each holder featured either a round frame with a metal pocket in which to place the watch, or a metal hook from which to hang it. Fanciful designs often featured Baroque cherubs.

Craftsmen cast less expensive versions in spelter, a heavy zinc and lead alloy, over which they applied a bronze wash or brightly colored paint. They sculpted the originals of animals or single figurines. One example shows a peasant girl carrying a garland wreath. Another depicts a young girl in a sheer, swirling dress which swirls in front to form a tray for cufflinks, watch chain, or coins. Still another example, depicts a parrot either about to land on or take off from a branch and painted a bright chartreuse and red.

The French called them porte montre, meaning “watch stand.” Parisian artisans fashioned ornate watch holders for wealthy travelers visiting Paris on the Grand Tour. Pocket watches were a necessity during this era and fine shops along the Palais Royal specialized in selling unusual and whimsical accessories to hold pocket watches at the end of the day.

These holders came in a variety of decorative styles, from Neoclassical to Regency and on to the opulence of Napoleon III. After the 1860s, watch holder makers explored the styles of the day, such as Rococo Revival and Renaissance Revival. As the 20th century dawned, artisans created holders in the styles of Art Nouveau and Arts and Crafts—and by the mid-1920s, Art Deco.

Parisian artisans created some of the most elaborate pocket watch holders. Resembling a larger version of the famed Limoge porcelain box, these became known as a casque porte montre, or pocket watch casket.

By the late 19th century watch holders could be found in a vast variety of shapes and forms. Champlevé, an enameling technique in which craftsmen carved, etched, die struck, or cast troughs into the surface of a metal object, then filled these troughs with vitreous enamel. was especially popular. After the initial preparation, they then fired the piece until the enamel fused, and when cooled, polished the surface of the object. The uncarved portions of the original surface remained visible as a frame for the enamel designs. The name, champlevé comes from the French for "raised field," or background, though the technique in practice lowers the area to be enameled rather than raising the rest of the surface.

Developed in the late 19th Century, these little gems usually often featured a beveled glass box mounted on sculpted brass legs. While some had an eglomise, or back painted view of Paris, most were clear glass.

One fine example is a French cristal d' opale rose “hortensia” or “gorge de pigeon,” hand embellished with raised enamel flowers and gilt accents. The rich iridescent pink “hortensia” opaline glass is beautifully supported by delicate ormolu mounts.

One of the more unusual examples of a watch holder originated during the gilded age of Napoleon III. Made in the form of a soldier's helmet which sits on a white marble base, its hand cut gilded brass is meticulously tooled to form the front and back of the hat. The crown of the helmet is of white opaline, with a gilded brass finial. It has a hand tooled gilded mount at the bottom. The helmet top opens to reveal a pocket watch holder mounted with a gilded brass frame. A "U" shaped hook at the top holds the watch while the interior, lined with red velvet, is typical of this opulent period.

Pocket watch holder makers also produced dramatic designs drawn from Nature. On one example, an eagle with its wings outspread and perched on a festoon of arrows and laurel leaves, holds an elongated hook. The top of the piece has a very large cartouche made of two curved cornucopia and a central swan, with neck curved downward, perched on a fleur de lis. A half-moon festoon of laurel leaves flow from one cornucopia to the other.

Also originating in Paris is cast bronze watch holder, designed by 19th-century French artist, Emile Joseph Cartier, featuring a little bird alighting atop a cascading vine of leaves which spill onto the base of the bottom mount. The detail of the little bird—its feathers, sweet expression, and outstretched wings give him a very lifelike appearance. In his beak he holds a curved stick onto which to hang a watch. A half-egg shape bowl, ornamented with leaves and berries, which could hold coins or other jewelry items, rests below him.

Yet another, made of bronze/metal, features painted detailing to give the effect of fine porcelain. The chubby little body of a cherub with his hands outstretched stands on a cradle made from an egg. He has delicate wings and wears a quiver around his waist, as well as delicate detailing to his fingers and toes and the feathers of his wings. His bow serves as the support for the pocket watch, which hangs within the sculpture design.

Specifically designed and carved as souvenirs are a group of pocket watch holders from towns in the 19th-century "Black Forest" area of Switzerland, Germany, parts of France and Italy, where they pleased travelers on the Grand Tour. These hand carved treasures range from whimsical small bears to large watch holders and wall plaques showing the most realistic anatomical studies of stag, fowl, and "fruits of the hunt."

One of the most important French artists of the 1920s, Maurice Frecourt, known for his animal sculptures, produced watch holders in the sleek style of Art Deco. After the Exposition Internationale des Arts Décoratifs et Industriels Modernes in Paris in 1925, designers embraced the geometric style of Art Deco. One of his watch holders features a stylized bird standing at the edge of a bowl with its wings up and touching and mounted on a black and green veined piece of octagonal marble. He engraved this piece with detailed feathers both in front and in the back.

Some pocket watch holders imitated other clock cases, only in miniature. Each evening the pocket watch owner placed his watch into the hole where the clock face would be.

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The Unlucky Pottery

 

QUESTION: While out antiquing recently, I came across a beautiful hand-painted porcelain water pitcher decorated with bright red cherries at the back of a shelf. The price was $25, so I figured for that I could afford to buy it. It stands about 11 inches tall and has “BBC/CHINA” stamped on the bottom in black. I’ve never saw a mark like this before and the pitcher like a copy of more expensive Haviland china.

ANSWER: It seems that you’ve stumbled upon a rare piece of china made by the Bell Pottery Company of Findlay, Ohio. Due to a string of unlucky occurrences, the company  only produced fine china rivaling French Haviland and Limoges porcelain for five years, from 1901 to 1906, making pieces scarce. 

Located in northwestern Ohio, Findlay was better known for its glass. But at the end of the 19th century, the city basked in the glow of a natural gas boom. City fathers used the seemingly endless supply of natural gas to entice factory owners to build there. In 1888, they advertised for a high quality pottery factory to locate there. They offered free land, free natural gas and a$10,000 bonus as incentives.

Although he had no experience making pottery, William Bell, a glass jobber from  East Liverpool, Ohio, accepted the offer. He teamed up with his brother, Edwin Bell, and  Henry Flentke to build a pottery factory which they called Bell Brothers and Company Pottery. They had high hopes for their business, but problems plagued them from the beginning.

Even before they built their factory, the Bells had trouble convincing reluctant railroad officials to build a side track to the new facility. Once the track was approved, workers faced the difficult task of clearing land for the factory and constructing its four brick  buildings and six kilns. Finally, in August of 1889, all was ready and production began with 150 employees, including hand-decorators.

Bell Pottery fired its first wares in July 1889, and by the following month 150 workers kept the dinnerware, toilet ware and hotel china rolling out. By March 1890, the pottery was running night and day and unable to keep up with orders. The partners added three new kilns to increase production.

The first problem occurred in January, 1891, when all the employees went on strike when the owners tried to reduce wages. The city's rapid industrial growth had created a shortage of adult workers. In desperation, the pottery company's owners turned to orphanages, hiring girls as young as 14. By July, the Bells and Flentke settled the labor dispute and most of the old hands went back to work. 

By the following years, troubles of a different sort had begun to brew when the city's gas supply dwindled, forcing the Bells to pay $100 a month for gas. They also sued the city's gas trustees for not paying the promised $10,000 bonus. Because of the unreliable supply of gas, the company had to convert to coal in 1893 to keep the factory operating. Unfortunately, just when things seemed to be looking up, a severe storm ripped the roof off the decorating room and damaged six kilns, causing over $8,000 damage. In August 1893, the plant announced a partial shutdown due to a lack of orders.

In April 1894, the partners began to disagree and with the dissolution of the partnership, the court ordered the property to be sold. Flentke, then living in Evansville, Indiana, stopped the sale of the pottery. He resolved the differences between himself and the Bell brothers before the sale date, enabling the pottery to resume operations in August 1894, after a year of standing idle. But the peace lasted only two years, and in January of 1896, the court once again ordered the property sold for no less than $30,000. The  Bell brothers purchased the pottery for 36,450 and paid Flentke $7,295 for his share. 

In 1898, the Bell brothers incorporated the firm as the Bell Pottery Company.

In August 1899, Bell Pottery announced that it would begin producing hand-decorated white china, employing about 25 decorators. Common decorative motifs included currants, roses, blackberries, chestnuts and hops. Decorators painted portraits of people and still life pictures of flowers and fruit on pottery vases, tankards and other pieces. 

By December, they had spent $40,000 on repairs to three kilns and improvements including the installation of an oval dish jigger to enable the production of footed dishes for use as nut bowls or candy dishes. They also installed electricity for the first time. But the good times didn't last long. In April of 1900, fire destroyed the factory's south wing including the packing room, decorating room and offices. Two months later, lightning struck the factory, toppling both smokestacks for the decorating kilns.

Although insurance only partially covered their loss, the Bell brothers didn't give up. The following year, the Bells issued additional stock, intending double the pottery’s capacity, employing 400. Their intention was to produce fine china that rivaled Haviland.

They rebuilt the factory and revived their business again. In addition to their regular pottery products, they diversified into the manufacture of tubes used to run electrical wiring through brick walls. Things were going so well, they built another factory in Columbus. Tragically, about the same time the new plant opened in 1902, William Bell died unexpectedly following surgery. Edwin continued to run both factories.

Edward had grand plans for the Columbus operation. He planned on 17 buildings with 12 kilns, to be doubled as the need arose. Lack of equipment caused more delays. By November 1904, he announced that he would move the Findlay operation to Columbus. The new pottery produced wares for about a year but by September of 1906, it was in the hands of a receiver and closed for good.

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Artful China

 

QUESTION: A friend of mine recently gave me a colorful vase that has two handles and a design of some sort of fruit on the front. The mark on the bottom says “Laughlin Art China” along with the image of an eagle. Can you tell me what company made this and when? 

ANSWER: Your vase is one of hundreds of pieces produced by the Laughlin China Company in the first decade of the 20th century. While the company made some of the pieces, such as soup tureens and platters, it made most of its pieces for display only.

At the turn of the 20th century, American potteries, formerly limited to the production of dinnerware and washstand toilet sets, took a cue from the vogue for American art pottery and began developing decorative "specialty ware" or art china.

Characterized by unusual decals surrounded by a background of solid color applied with an air brush or atomizer, these wares mimicked the standard glaze and hand-painted ware of such art potteries as Rookwood, Roseville and Weller. At first, manufacturers used a brown background but soon changed that to bright red, magenta, green, blue-green, pink and sometimes combinations of several colors. The first American pottery to popularize the style seems to have been the Warwick Pottery of Wheeling, West Virginia. 

Many potteries in the Ohio Valley quickly copied the art china concept. None, however, elaborated up on the idea with more verve and success than Homer Laughlin China of East Liverpool, Ohio, which began production if its art china in 1900. 

But neither Homer nor Shakespeare Laughlin, the founders of Homer Laughlin China Co., had anything to do with the development of Laughlin Art China. The brothers did develop a whiteware pottery on a subscription basis in East Liverpool in 1873, but Shakespeare dropped out in 1877. While Homer Laughlin expanded the company, beginning the production of semi-vitreous porcelain in the 1890s and incorporating the company in 1896, he retired two years later and moved to California.

During these early years, there was one notable and highly successful effort by Laughlin China to produce artistic china-ware. Around 1886, the company succeeded. Marked with the words "Laughlin China" in a horseshoe, workers frequently decorated it  using the French pate-sur-pate technique, with cameo-like white designs on a blue ground. But such ware is rare, as Laughlin only made it for three years.

Under new management, notably that of William E. Wells, the Laughlin pottery continued to expand, completing a second plant in East Liverpool's East End in 1900, soon followed by a third plant. In 1903,. it traded plants with the National China Co. and then enjoyed a combined capacity of 35 kilns.

Shapes that are known to have been used for Laughlin specialties include American Sweetheart, King Charles, Genesee, Hudson and The Angelus. A number of these shapes, notably Kwaker, continued in production as late as the 1940s, 

Beginning in 1903, Laughlin China marked its art china specialties with a gold stamp featuring an eagle trying its wings, over a script "Laughlin." The firm sold the first pieces that same year, but they didn’t appear in company sales literature until 1905. Actual production seems to have been limited to five or six years.

Laughlin produced more than 130 different shapes and sizes of its art china with a currant decal, the most common form of decoration. 

But the White Pets design, the best known, featured a series of dogs, cats and birds, the most common being a pair of pointers, usually shown amid a clump of cattails. The use of a decal showing a pair of white cockatoos may have been a response to Warwick China's striking use of white birds on a white ground.

Another popular Laughlin Art China pattern was Dreamland, bearing a variety of Kate Greenaway-like children's scenes, usually involving a goat, with a blended yellow, green and brown back-ground. Like White Pets, this line often lacked the Laughlin Art China eagle backstamp and simply bore the line name. Unlike White Pets, Dreamland was decorated not with a simple decal but by "pouncing," a process in which the design was enhanced by the addition of small particles of carbon pigment, particularly effective in the cartoon-like Dreamland and Holland decorations. Other cartoon-like decorative lines utilized a variety of frog decals, most likely inspired by Kenneth Grahame's The Wind in the Willows.

Other companies occasionally decorated Homer Laughlin blanks using different decals and decorating techniques. Perhaps most notable was the little-known McKean Pottery of Minerva, Ohio, which specialized in a faux wood grain decorative background, a line which they called Angora. 

With Laughlin art china, condition is very important, particularly in collecting art china decorated with the air-brushed background, since this type of decoration wears easily. Because Laughlin intended some of its art china to be used, the delicate nature of the decoration was a problem and may be part of the reason for its decline in popularity. However, some pieces are so rare that even substantial amounts of wear don’t rule out significant prices.

To read more articles on antiques, please visit the Antiques Articles section of my Web site.  And to stay up to the minute on antiques and collectibles, please join the over 30,000 readers by following my free online magazine, #TheAntiquesAlmanac. Learn more about "folk art" in the 2023 Winter Edition, online now. And to read daily posts about unique objects from the past and their histories, like the #Antiques and More Collection on Facebook.

Whiskey by the Jug

 

QUESTION: Recently, while browsing the tables of a local flea market, I discovered a cute little porcelain jug with the name “Old Maryland 1881...St. Louis, Mo.” Stamped on the bottom was the mark “K.T.K./CHINA.” Can you tell me what company made this and what would the jug have contained?

ANSWER: Little ceramic jugs like this usually held whiskey. They were a gimmick used by distillers to promote their liquors. The firm of Knowles, Taylor & Knowles Company of East Liverpool, Ohio, made many of them and their “K.T.K./CHINA” mark the bottom of many of them.

From the early 17th century, people drank liquor regularly. And there were always people who viewed it as evil and sought to prevent its use, usually by taxation. In 1753, the legislature of the Colony of New York established an excise tax. By the 1850s, at least 13 states had enacted some type of prohibition laws against the use of liquor, yet by the Civil War, most of these laws had either been repealed or declared unconstitutional.

The Civil War Excise Law of 1862, which established a license for "retail dealers in liquors," originally exempted pharmacists. Two years later, Congress amended the law to apply a $1.50 per gallon tax on all distilled spirits that also applied to pharmacists. But in 1870, Congress again amended the law permitting pharmacists to dispense alcohol for "medicinal purposes.”

There are some Knowles, Taylor & Knowles china whiskey jugs that have the words "expressly for medicinal use" imprinted on them. An ad in the Daily Crisis of East Liverpool, Ohio, on September 10, 1892, stated, “Cholera, the best and finest prevention of this dread disease is to use a few drops of Diamond Club Pure Rye in every drink of water." The distiller declared this whiskey to be “officially recognized by the medical profession in every part of the United States as the purest on the market and is used extensively of medicinal purposes, in kidney diseases and ailments of a like character. It is acknowledged to be unequaled as a bracer and appetizer and as a rejuvenator of a debilitated system." Not only did liquor distributors continue selling their products, they also found a way to avoid paying the excise tax. 

The firm of Knowles, Taylor & Knowles Company began operations in 1870, when Isaac Knowles, Colonel John N. Taylor (Isaac’s son-in-law), and Isaac's son Homer formed a partnership.. By the early 1890s, the firm had mastered the making of bone china called Lotus Ware. 

The china whiskey jugs produced by the firm were bulbous and tapered to a slender neck, decorated with gold trimming. The top of the applied handle, also decorated with gold, had the look of a serpents head, a novel way for the jug to stand out from other whiskey jugs.

The mass-produced jugs came in several colors with transfer designs. Green seemed to be the most widely used color, but sometimes the same style jug appeared in red, blue, and brown.

Jugs also came in different sizes, the most common being the quart size, but there were also pints and half pints. Most jugs had one handle but some had two.

The sharp and artistic transfer designs on the jugs showed off the talent of the artists and the innovative ideas of the firm. The fancy lettering on the jugs may have inspired collectors to keep the jugs as decorative pieces, instead of discarding them as just another container.

George W. Meredith of East Liverpool, Ohio, a former employee of Knowles, Taylor & Knowles Company, fast became a leader in the distribution of his product called "Diamond Club Pure Rye Whiskey." At his peak, he distributed his whiskey from coast to coast. Meredith, who was always looking for new ways to sell his whiskey, and his association with the firm of Knowles,Taylor & Knowles Company, probably had a lot to do with the production of the unique china whiskey jug.

An aggressive advertiser of his "Diamond Club Pure Rye Whiskey ," Meredith was the only distributor known to use the pint and half-pint containers. He also had a 154-inch size, known at the time as a "watch fob." Though it didn’t contain any whiskey, it was a consistent reminder to its possessor of the G.M. Meredith Company.

During this same period, American liquor distributors were also looking for ways to sell  their products, and on special occasions, to provide a gift to their best customers. The fancy liquor containers, inexpensive to purchase, were the perfect solution. The Irish, British and Scottish distributors of the same era had been using fancy jugs to promote their whiskey and had been very successful in thwarting thefts.

Knowles, Taylor & Knowles Co. also produced hand-painted china whiskey jugs. Companies or individuals not in the liquor business purchased these jugs for special occasions. The hand-painted jugs were interesting in themselves, as they showed the Victorian influence. Some had Victorian ladies painted on them surrounded by silver overlay. The scenes often depict flowers, from single roses to bunches of flowers with leaves and stems.

Though Knowles, Taylor & Knowles made jugs with transfer designs, their hand-painted jugs aren’t as easily recognized. The firm didn’t mark its jugs, whether hand-painted or not, any differently. During the Victorian era and into the 20th century, it was popular to buy undecorated items and paint them for business or gifts. Often a professional artists decorated the piece, so the decoration itself cannot offer a clue as to whether or not a piece had been decorated at the factory. Also, most of the factory pieces weren’t signed because the artist worked by the piece and too much time would have been wasted by signing and dating items. However, amateur artists did like to sign their pieces. Most hand-painted items found today that are signed and dated probably fall into that category.

Knowles, Taylor & Knowles produced their china whiskey jugs from 1891 to the onset of the Great Depression in 1929, when bankruptcy forced the company to close.

To read more articles on antiques, please visit the Antiques Articles section of my Web site.  And to stay up to the minute on antiques and collectibles, please join the over 30,000 readers by following my free online magazine, #TheAntiquesAlmanac. Learn more about "folk art" in the 2023 Winter Edition, online now. And to read daily posts about unique objects from the past and their histories, like the #Antiques and More Collection on Facebook.

Relics of Early Communication

 

QUESTION: I recently purchased a box of glass insulators, like the kind used on telephone and electric poles. Several have little white specks in the glass. I bought them because of their beautiful colors, but do these things have any value as a collectible? And just how were they used?

ANSWER: There’s nothing like the beauty of colored glass, especially when placed in a window where the sun can shine through it. Many people collect these glass electrical insulators for just that reason. But some, especially retired linemen, collect them because they’re a part of the history of telecommunications.

The first electrical systems to make use of insulators were telegraph lines; but directly attaching wires to wooden poles gave very poor results, especially during damp weather. Ezra Cornell invented the insulator in 1844 as a means of protecting electrical wires front the elements and reducing the loss of current from the wire to the ground. As technology developed, power and telephone companies needed more insulators. 

The earliest insulators had unthreaded pin holes. Because linemen simply pressed them onto a tapered wooden pin, extending upwards from the crossarm of an electric pole, they didn't stay on very well since the wires contracted and expanded in the heat and cold. When Louis A. Cauvet improved the insulator by patenting the threaded pin hole type in 1865, he sold his invention to Brookfield Glass Company of Brooklyn, which remained a major producer of insulators until 1922.

Though threaded pin holes helped insulators stay put, moisture still presented a problem since wet glass served as a conductor. In 1893, the Hemingray Company, another major manufacturer, obtained a patent for insulator "drip points." These bumps, which line the outside bottom rim of the insulator skirt,  helped prevent shorts by causing moisture to drip off. The earliest points were sharp but these were easily broken, leading to the manufacture of more rounded ones.  must have discovered that these really didn't work, since they eliminated them from later models. However, other companies continued to make insulators with drip points.

Porcelain insulators began to replace glass examples in the early 20th century, particularly on high voltage lines since glass insulators only worked on lines handling up to 60,000 volts.. By the late 1940s, only a few producers of glass insulators remained, by 1969, Kerr Manufacturing was the only company still making them. 

Manufacturers produced glass Insulators in a variety of colors and types of glass. They used remnants of window or bottle glass for earlier ones. Most companies made insulators only as a sideline,  pressing them out of whatever kind of glass happened to be available. Because of this, objects like nails, screws, coins, and bits of furnace brick would get mixed into the glass. Collectors call the little white furnace brick bits rocks. Some makers, like Hemingray, would cull out these blemished pieces, but others like Brookfield Company would just sell the blemished pieces along with the good ones.

The most common insulator colors are clear and light bluish-green or aqua. Other colors include sun-colored amethyst, green,  milk glass, royal blue, cobalt, amber and Carnival glass. The only color not made in glass is red, because red requires gold as a colorant. The most popular colors are royal blue and cobalt, with amethyst a close second. Insulator makers originally produced purple ones, ranging from  light lavender to deep amethyst, from clear glass. Manganese, used to clarify the glass, turned the glass purple after being exposed to the sun’s ultraviolet rays. After the start of World War I, manganese became scarce since it was needed for arms production. Manufacturers switched to selenium, which the sun turned to the color of wheat.

Common clear and aqua insulators sell for as little as a dollar each. But prices climb steadily for rare ones such as the Buzby or the Twin Pin. Aqua ones made by the Jeffrey Manufacturing Company can sell for as much as $125 each while a threadless Canadian insulator, also known as a snow cone, can sell for about $2,000.

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