Latham film loop patent
E284179
The Latham film loop patent is a foundational early cinema invention that introduced a slack-forming loop in motion picture projectors, enabling longer, smoother film projection without tearing.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Latham film loop patent canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2633094 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Latham film loop patent Context triple: [Motion Picture Patents Company, controlledPatent, Latham film loop patent]
-
A.
Patent Clause of the United States Constitution
The Patent Clause of the United States Constitution is the provision that empowers Congress to grant inventors exclusive rights to their discoveries for limited times in order to promote the progress of science and useful arts.
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B.
Motion Picture Patents Company
The Motion Picture Patents Company was an early 20th-century film industry trust that sought to control movie production, distribution, and exhibition in the United States through pooled patents and licensing.
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C.
A Loop
A Loop is a modern streetcar route in Portland, Oregon, that provides circulator service through the central city and adjacent neighborhoods as part of the Portland Streetcar system.
-
D.
The Danger of Software Patents
"The Danger of Software Patents" is an essay by Richard Stallman warning that software patents threaten innovation, restrict programmers' freedom, and endanger the development and distribution of free software.
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E.
Loopt
Loopt was an early location-based social networking mobile app startup that allowed users to share their real-time location with friends.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Latham film loop patent Target entity description: The Latham film loop patent is a foundational early cinema invention that introduced a slack-forming loop in motion picture projectors, enabling longer, smoother film projection without tearing.
-
A.
Patent Clause of the United States Constitution
The Patent Clause of the United States Constitution is the provision that empowers Congress to grant inventors exclusive rights to their discoveries for limited times in order to promote the progress of science and useful arts.
-
B.
Motion Picture Patents Company
The Motion Picture Patents Company was an early 20th-century film industry trust that sought to control movie production, distribution, and exhibition in the United States through pooled patents and licensing.
-
C.
A Loop
A Loop is a modern streetcar route in Portland, Oregon, that provides circulator service through the central city and adjacent neighborhoods as part of the Portland Streetcar system.
-
D.
The Danger of Software Patents
"The Danger of Software Patents" is an essay by Richard Stallman warning that software patents threaten innovation, restrict programmers' freedom, and endanger the development and distribution of free software.
-
E.
Loopt
Loopt was an early location-based social networking mobile app startup that allowed users to share their real-time location with friends.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
cinema technology invention
ⓘ
motion picture technology patent ⓘ |
| addressesProblem |
film breakage due to high tension in early projectors
ⓘ
jerky film motion caused by direct drive without slack loop ⓘ |
| alsoKnownAs | Latham loop patent ⓘ |
| category | film transport mechanism innovation ⓘ |
| componentOf | early motion picture projector design ⓘ |
| effect |
allowed projection of longer motion picture reels
ⓘ
enabled development of longer narrative films ⓘ improved smoothness of film motion through projector ⓘ reduced mechanical stress on film perforations ⓘ |
| enables | projection of films longer than a few minutes without damage ⓘ |
| field |
cinematography
ⓘ
motion picture projection ⓘ |
| hasInnovation | slack-forming film loop in projector film path ⓘ |
| historicalEra | early motion picture era ⓘ |
| impactOnIndustry | contributed to viability of feature-length films ⓘ |
| impactOnTechnology | became standard feature of professional film projectors ⓘ |
| influenced |
development of commercial cinema exhibition
ⓘ
standard film path design in later projectors ⓘ |
| introducedConcept |
decoupling of continuous film feed from intermittent film advance
ⓘ
slack-forming loop between feed and intermittent movement ⓘ |
| mechanicalPrinciple |
isolation of film gate from supply reel tension
ⓘ
use of a free loop to buffer intermittent motion ⓘ |
| purpose |
enable longer continuous film projection
ⓘ
prevent film tearing in projectors ⓘ reduce film tension during projection ⓘ |
| significance |
foundational early cinema technology
ⓘ
key step in making long films technically feasible ⓘ |
| usedIn | early 35mm motion picture projectors ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Latham film loop patent Description of subject: The Latham film loop patent is a foundational early cinema invention that introduced a slack-forming loop in motion picture projectors, enabling longer, smoother film projection without tearing.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Motion Picture Patents Company