51 Comments Posted by 12baumarobi
- Location: Northam Manor Psychiatric Hospital (view comments)
- Gallery: Following the Trail
- Location: Arlington School (view comments)
- Gallery: Jewel
Strange - Robert B
- Location: Bryce Hospital (view comments)
- Gallery: Curiosity
at Byberry state hospital. We have to be careful because of too many people that would take more than pics and leave more than footprints. Well sorry this kinda became a soapbox, I just have a good sense of preservation :) Enjoy the site Sam! - Robert B
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- Gallery: Corrosive Industry
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- Gallery: Cast Iron Valentine
This is some info about Nitrate film from Wiki
"Nitrocellulose was used as the first flexible film base, beginning with Eastman Kodak products in August, 1889. Camphor is used as a plasticizer for nitrocellulose film, often called nitrate film.
Nitrate film was used until 1933 for X-ray films (where its flammability hazard was most acute) and for motion picture film until 1951. It was replaced by safety film with an acetate base.
The use of nitrocellulose film for motion pictures led to the requirement for fireproof projection rooms with wall coverings made of asbestos. The US Navy shot a training film for projectionists that included footage of a controlled ignition of a reel of nitrate film, which continued to burn when fully submerged in water. Unlike many other flammable materials, nitrocellulose does not need air to keep burning as the reaction produces oxygen. Once burning, it is extremely difficult to extinguish. Immersing burning film in water may not extinguish it, and could actually increase the amount of smoke produced.
Cinema fires caused by ignition of nitrocellulose film stock were the cause of the 1926 Dromcolliher cinema tragedy in Limerick County in which 48 people died and the 1929 Glen Cinema Disaster in Paisley, Scotland which killed 69 children. Today, nitrate film projection is normally highly regulated and requires extensive precautionary measures including extra projectionist health and safety training.
Projectors certified to run nitrate films have many precautions, among them the chambering of the feed and takeup reels in thick metal covers with small slits to allow the film to run through. The projector is modified to accommodate several fire extinguishers with nozzles aimed at the film gate. The extinguishers automatically trigger if a piece of flammable fabric placed near the gate starts to burn. While this triggering would likely damage or destroy a significant portion of the projection components, it would prevent a fire which could cause far greater damage. Projection rooms may be required to have automatic metal covers for the projection windows, preventing the spread of fire to the auditorium.
It was found that nitrocellulose gradually decomposes, releasing nitric acid and further catalyzing the decomposition (eventually into a flammable powder). Decades later, storage at low temperatures was discovered as a means of delaying these reactions indefinitely. It is thought that the great majority of films produced during the early twentieth century were lost either through this accelerating, self-catalyzed disintegration or through studio warehouse fires. Salvaging old films is a major problem for film archivists"
The good news is though it is probably not nitrate as the theater would have operated long after its discontinuation in 1948 and they likely would have removed it.
This is likely Cellulose triacetate film, which is less flammable, only burns like regular paper and was easy to put out. and about deterioration;
"Although triacetate does not decompose in as dangerous a way as nitrate does, it is still subject to a process known as deacetylation, often nicknamed "vinegar syndrome" (due to the acetic acid smell of decomposing film) by archivists, which causes the film to shrink, deform, become brittle and eventually unusable."
Cellulose triacetate would mostly get phased out in the 80's and 90's and replaced by polyester, but it can still be found here and there today. So that ends my history lesson for today :)
- Location: Palace Theater (view comments)
- Gallery: Cacophony
- Location: Connecticut Valley Hospital (view comments)
- Gallery: Time Capsule
This is seen from Google maps
https://www.google.com...4,572m/data=!3m1!1e3
- Location: Riverside State Hospital (view comments)
- Gallery: Wonderland
- Location: Newington Home and Hospital for Crippled Children (view comments)
- Gallery: Thaw
- Location: McMyler Coal Dumper (view comments)
- Gallery: Blinding Light
- Location: McMyler Coal Dumper (view comments)
- Gallery: Blinding Light
- Location: Western State Hospital (Virginia) (view comments)
- Gallery: Different Worlds
- Location: City Methodist Church (Gary) (view comments)
- Gallery: Gary, Indiana
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