Original file (3,456 × 4,608 pixels, file size: 5.47 MB, MIME type: image/jpeg)
Summary
DescriptionGladstone glost bottle oven 3816.JPG |
The Gladstone Pottery Museum The Gladstone Pottery Museum is a grade II* listed site in Stoke-on-Trent, with many protected features including the bottle kilns.
A bottle oven is protected by an outer hovel which helps to create an updraught. The biscuit kiln was filled with saggars of green flatwares (bedded in flint) by placers. The doors (clammins) were bricked up and the firing began. Each firing took 14 tons of coal. Fires were lit in the firemouths and baited ever four hours, Flames rose up inside the kilns, heat passed between the bungs of saggars. They controlled the temperature of the firing using dampers in the crown. The temperature was gauged by watching the contraction of bullers rings place in the kiln. A kiln would be fired to 1250C The biscuitwares are glazed and fired again in the bigger glost kilns- again they are placed in saggers, separated by kiln furniture such as stints, saddles and thimbles. The enamel (or muffle kiln) is of different construction- it fired at 700C. The pots were stacked on 7 or 8 levels of clay bats (shelves). The door was iron lined with brick. |
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I, the copyright holder of this work, hereby publish it under the following license:
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Author | Photograph by Clem Rutter, Rochester, Kent. (www.clemrutter.net). | ||||
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Captions
Items portrayed in this file
depicts
Former Gladstone and Park Place (Roslyn) Works
copyright status
copyrighted
copyright license
Creative Commons Attribution-ShareAlike 3.0 Unported
coordinates of the point of view
52°59'12.012"N, 2°7'53.357"W
inception
22 November 2014
location of creation
City of Stoke-on-Trent
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:02, 29 November 2014 | 3,456 × 4,608 (5.47 MB) | ClemRutter |
File usage
Metadata
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Camera manufacturer | FUJIFILM |
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Camera model | FinePix HS50EXR |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2.8 |
ISO speed rating | 800 |
Date and time of data generation | 15:07, 22 November 2014 |
Lens focal length | 4.4 mm |
Orientation | Rotated 90° CW |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Digital Camera FinePix HS50EXR Ver1.00 |
File change date and time | 15:07, 22 November 2014 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 15:07, 22 November 2014 |
Meaning of each component |
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Image compression mode | 3.2 |
Shutter speed | 5 |
APEX aperture | 3 |
APEX brightness | −2.26 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Spot |
Light source | Unknown |
Flash | Flash fired, compulsory flash firing |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 7,166 |
Focal plane Y resolution | 7,166 |
Focal plane resolution unit | 3 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Sharpness | Normal |
Subject distance range | Unknown |