“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Estell Manor in Atlantic County, New Jersey — The American Northeast (Mid-Atlantic)

The Pot House

Estellville Glass Factory


—Estell Manor Park —

The Pot House Marker image. Click for full size.
By Don Morfe, January 18, 2016
1. The Pot House Marker
Inscription. Pots were the clay crucibles used as containers in the furnace for melting the raw materials to make glass. Making the pots, the process which took place in this building, was the most exacting work in the entire glass-making industry.

The pots were about two inches thick, thirty inches high, and forty inches wide. Each one could hold 1500 pounds of molten glass, and cost as much as $100 in nineteenth-century dollars to manufacture. Pot manufacture was done with fastidious care, since a flaw in construction could cause a pot to crack and spill melted glass inside the furnace. When this happened, the furnace had to be slaked, shutting down all production, and a dozen men had to labor for hours to extract the broken pot.

Imported clay from St. Louis, Missouri; Germany or England was preferred for the pots though some South Jersey factories used clay from Newcastle, Delaware. After being formed the moist clay pots were dried from two months to a year.

A few days before a pot was needed it was moved to an area of the Melting Furnace, probably on the west side, nearest the Pot House, for pre-heating.

In the side room of the Melting Furnace, the pot was slowly heated to between 80 and 100 degrees. Next, it was moved into a separate small furnace called the Pot Arch, and heated to the temperature of the main furnace. Finally,

The Pot House Marker image. Click for full size.
By Don Morfe, January 18, 2016
2. The Pot House Marker
it was moved into the main furnace, and the furnace was resealed.

Window glass was made from a mixture of silica sand, lime, and potash recovered from the furnace. The raw materials called a “batch,” were dumped into the pot through a small hole in the front of the furnace, and that hole was temporarily plugged. The batch was then left to melt for about twenty-four hours. The intense heat limited the productive life of a pot to an average of seven weeks.

(Inscription below the image in the upper left)
Historic photograph of the pot house. (Inscription below the image in the center left) Tracking clay for melting pots.

(Inscription below the image in the upper right)
Building up a melting pot.

(Inscription below the image in the lower right)
Mixing the batch.
Location. 39° 23.467′ N, 74° 44.528′ W. Marker is in Estell Manor, New Jersey, in Atlantic County. Marker is on New Jersey Route 50. Click for map. The marker is on Purple Heart Drive within Estell Manor Park. Marker is in this post office area: Estell Manor NJ 08319, United States of America.
Other nearby markers. At least 8 other markers are within 5 miles of this marker, measured as the crow flies. Estellville Glass Factory (within shouting distance of this marker); The Flattening House (within shouting distance of this

The Pot House Ruins image. Click for full size.
By Don Morfe, January 18, 2016
3. The Pot House Ruins
marker); The Melting Furnace (within shouting distance of this marker); The Daniel Estell House (approx. 0.4 miles away); Welcome to Atlantic County Park at Estell Manor! (approx. half a mile away); The Estellville Methodist Church (approx. half a mile away); Bethlehem Loading Co. (approx. 1.1 miles away); George Wheaton’s Shipyard (approx. 4.2 miles away). Click for a list of all markers in Estell Manor.
Categories. Industry & Commerce
Credits. This page originally submitted on , by Don Morfe of Baltimore, Md 21234. This page has been viewed 176 times since then and 36 times this year. Photos:   1, 2, 3. submitted on , by Don Morfe of Baltimore, Md 21234. • Bill Pfingsten was the editor who published this page. This page was last revised on June 16, 2016.
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