Old railway rights-of-way in my area were diligently scoured for many miles around; as far as my bicycle would take me. Particular emphasis was given to an old Western Union telegraph line that ran through the center of my hometown of Brockton and extended in each direction for many miles. The line paralleled a railroad right-of-way and was dismantled in early upon my startling discovery of what seemed like an utter, overnight transition to semi-naked poles. The linemen had just got through removing the solid copper open wire and threw the crossarms onto the ground, with the insulators remaining on their pins. There were three crossarms on the upper section of each pole that supported the former Western Union wires with two additional ten-pin crossarms immediately below which remained in service for railway telephone and signaling purposes. An occasional CD “spiral groove”, dome dated W. Brookfield or Whitall Tatum No. The dismantling project must have been done very quickly since the linemen often left the cut piece of line and tie wire on the insulators. An added bonus to these adventures was collecting these copper discards, traded for monetary delight at the end of the day at the local scrap dealer. Searching for insulators and adding them to my collection became an almost insatiable addiction being fueled by all of these finds!

1908 3″ NARROW SKIRT Brookfield CD145 Beehive Aqua Glass Insulator GI-0020

A simple enough question, but there are actually several factors to consider when finding the value of your insulator Once you have the above information, now you can find the value of your insulator. The most recent price guide currently available is the edition, published by Don Briel. Find Your Insulator’s Value.

So he got one of his own —which was made by the Brookfield Glass More than 2, insulators — some of them dating to the s — fill.

Insulator Companies. List Includes U. I nsulator R esearch S ervice. The original company listing was put together as a searching guide for a research trip to the Smithsonian Natural History Museum catalog archives in August A special thanks to Caleb Thimell for supplying his list of foreign insulator companies and to Rick Soller for his input and company listing on his web site. Recent resources for additions to the list and historic details came from the links shown below with a few individual contributions, most notable being Jean-Pierre Volatron.

A special thank you to Bill Meier for dramatically improving the table formating and file size. Please check back periodically as new information is added and updated frequently. He does not collect insulators or porcelain figures. For additional historic information, try these links:.

Insulator Identification and Dating

Free shipping. Overall Excellent condition -Near Mint – No chips or cracks. A few fleabite chips to bottom rim. This is clearly an extraordinary insulator and could very well be the key piece for the advanced Brookfield specialist to own as part of their collection.

Jun 20, – CD BOSTON BOTTLE WORKS (glass insulator) Color: Light Aqua Some styles list Samuel Oakman’s October 15, patent date for “​Improvement in CD BROOKFIELD (glass insulator) Color: Aqua w/ HUGE.

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online. If you would like to know how you can use content on this page, see the Smithsonian’s Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

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Insulator Historical Timeline!

Installed in on the transmission line, the CD was used from , a total of 94 years of continuous service. T-H stands for the Thomas-Houston Electrical Company and the insulator was manufactured by Brookfield in the early s. T-H merged with Edison General Electric in , the insulators were kept until used in on the Pelzer transmission line.

Roughly 2, CD were installed on the transmission line.

Glass telegraph insulators that are unique in their own way. First off we’ll start with a very rare type of Brookfield called an O’Brien’s patent. poured the insulator leaving a perfect reverse impression of the penny including wording and date.

Reprinted from “Crown Jewels of the Wire” , October , page Lee and I share an affinity for the CREB CD beehives due to their aesthetic shape and numerous embossing and shop number variations. Shop numbers are those numbers or letters on the front or rear crown of these pieces that refer to the shop of 4 workers that produced them: In N. Woodward’s book “The Glass Insulator in America: report”, he explains that the employees at the glassworks were paid based on the number of pieces produced in a given unit of time.

This payment method was achieved by counting or weighing the insulators with a given shop number after they emerged from the cooling end of the lehr. Reverse side of typical CREB. Note shop number on the top of the dome; and patent date embossing on the crown of the insulator. Shop numbers can be found on either the front or back.

Brookfield Glass Company

Glass insulators were originally designed as conductors and protectors of wires on the tops of telegraph, and later, telephone and electricity poles. The National Insulators Association tells the earliest date of the insulators was , when a telegraph line link was established between Washington, D. I clean my dirty insulators in a 5 gallon plastic bucket of water with oxalic acid wood bleach crystals mixed in. A good ratio is about 1 pound of oxalic acid for every 2.

T-H stands for the Thomas-Houston Electrical Company and the insulator was manufactured by Brookfield in the early s.

Object Name: Insulator: CD Brookfield Insulator – BF date made: ca maker: Brookfield Glass Company. place made: United States: New York.

Dating hemingray insulators Antique glass insulator 14 in the most steamy and telegraph lines throughout. Datiing of. Asiandate is an american glass, az; posts: cd insulators sell for henry m brookfield how to choose photos for online dating – brookfield cd I recently went through. Specialities: cd ; original catalogs. Box , insulators association nia is not at amazon.

CD 145, BROOKFIELD, Purple

Figure 1 Wedge drip points. Figure 2 Tall Skirt. Figure 3 Fat Head, skinny skirt left , stout skirt right.

Antique W. Brookfield Glass Insulator — Dated Feb. 12, | Collectibles, Bottles & Insulators, Insulators | eBay!

Whether this happened immediately is questionable, but is the general date for when the BFNY began to appear and the WBFNY emb’g may have carried on until service was required or the molds wore out. This information has been proven incorrect by period documents stating work began on the new plant in and was in production before there. Also, it once was believed this move also meant that the Bushwick plant closed in It actually remained in service into As we know it now, insulator production began at OB in It was the first production to be done at OB, and of note, insulator production continued at Bushwick for several years before all insulator production was moved over to OB.

Do we have definite dates for start at OB and stoppage at Bushwick? Which leads to the last comment about embossing types. It was once considered fact based on??? This has proven to be nothing but poppycock, as B-marked insulators can be found in Bushwick colors, and the standard OB dark aquas. It appears the B marking was used randomly from perhaps as early as to the very end with no obvious rhyme or reason to its application. It is my belief that OB production was always primarily a dark aqua tealish to dark green, and often swirled with olive to create greens, two-tones, and the occasion olive or amber run.

The latter occurring with greater frequency at, or near the very end. More on this later. Common items showing these attributes are the Brookfield No. The glass has a different feel to it. The surface is often less smooth, and the mold lines are often sharp edged.

Insulators – One dated 1884

Antique glass insulators are a low cost but very popular collectible. They are easy to find, come in a variety of colors, and make a colorful display. The first insulators had nothing to do with telegraph wires or electrical wiring. They were the glass insulators that were used to protect homes against lightening strikes. Glass insulators for wiring began to be manufactured in the mid s in response to the technology of the time.

Samuel Morse had created the first working telegraph in and by telegraph lines were being strung from one coast of America to the other.

from Brookfield insulators altogether around in favor of skirt embossing. The small embossed patent date CREB pieces are therefore assumed​.

Brookfield to manage the operation. The factory was quite close apparently, right across the street to the main Bushwick Chemical Works buildings. James M. Brookfield purchased the Bushwick glassworks from Kalbfleisch in approximately In later years his son William Brookfield , and later, grandsons, eventually would become involved with the operation of the company.

The mold room is described as being crowded with many, many bottle molds, so there are, no doubt, many types of patent medicine and other product bottles that were made here in large quantities, yet remain unidentified to the present-day bottle collector. Evidently it is a very rarely seen item, and probably dates from the s or s. The great majority of the insulators from the Brooklyn plant are found in a pale blue-aqua color.

Brookfield maintained business offices in Manhattan throughout most if its history, and those office addresses were embossed on many of the earlier insulators. Although an insulator collector might understandably assume so, just because of the markings, no insulators were actually made at those Manhattan locations. They were made at the factory site in Brooklyn. The exact time when the Brooklyn plant was closed is still open to question, but it may have been around , meaning that both plants likely operated simultaneously for a period of around 6 years.

However, production of insulators may have ceased at Brooklyn soon after the Old Bridge NJ plant was in full operation, leaving the Brooklyn location to concentrate exclusively on bottle production, especially beer bottles. The Brookfield Glass Company was officially incorporated in and again!

CD162 Star Bubble