Hydra-Matic automatic transmission
E323509
The Hydra-Matic automatic transmission was one of the first mass-produced fully automatic automotive transmissions, developed by General Motors and widely used in mid-20th-century American cars.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Hydra-Matic automatic transmission canonical | 3 |
| GM Hydra-Matic Division | 1 |
| Hydra-Matic | 1 |
| Turbo-Hydramatic transmission | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3057459 — 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: Hydra-Matic automatic transmission Context triple: [Oldsmobile 88, transmissionOption, Hydra-Matic automatic transmission]
-
A.
Packard V-1650
The Packard V-1650 is an American-built version of the Rolls-Royce Merlin V-12 aircraft engine, produced under license by Packard and widely used in World War II fighters such as the P-51 Mustang.
-
B.
Continental AV-1790-3 gasoline engine
The Continental AV-1790-3 is a large, air-cooled V12 gasoline engine developed in the mid-20th century to power American heavy armored vehicles such as the M46 Patton tank.
-
C.
Delco
Delco was an American automotive electronics and parts manufacturer best known for pioneering electric starting, lighting, and ignition systems for automobiles.
-
D.
Studebaker Avanti
The Studebaker Avanti is a distinctive early-1960s American personal luxury coupe known for its futuristic fiberglass body, performance focus, and status as one of the last iconic models produced by the Studebaker Corporation.
-
E.
Packard
Packard is a surname most prominently associated with David Packard, the American electrical engineer and co-founder of Hewlett-Packard.
- 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: Hydra-Matic automatic transmission Target entity description: The Hydra-Matic automatic transmission was one of the first mass-produced fully automatic automotive transmissions, developed by General Motors and widely used in mid-20th-century American cars.
-
A.
Packard V-1650
The Packard V-1650 is an American-built version of the Rolls-Royce Merlin V-12 aircraft engine, produced under license by Packard and widely used in World War II fighters such as the P-51 Mustang.
-
B.
Continental AV-1790-3 gasoline engine
The Continental AV-1790-3 is a large, air-cooled V12 gasoline engine developed in the mid-20th century to power American heavy armored vehicles such as the M46 Patton tank.
-
C.
Delco
Delco was an American automotive electronics and parts manufacturer best known for pioneering electric starting, lighting, and ignition systems for automobiles.
-
D.
Studebaker Avanti
The Studebaker Avanti is a distinctive early-1960s American personal luxury coupe known for its futuristic fiberglass body, performance focus, and status as one of the last iconic models produced by the Studebaker Corporation.
-
E.
Packard
Packard is a surname most prominently associated with David Packard, the American electrical engineer and co-founder of Hewlett-Packard.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
automatic transmission
ⓘ
automotive technology ⓘ |
| controlType | mechanical-hydraulic control ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| developer |
Hydra-Matic automatic transmission
self-linksurface differs
ⓘ
surface form:
GM Hydra-Matic Division
General Motors ⓘ |
| eraOfWidespreadUse |
1940s
ⓘ
1950s ⓘ early 1960s ⓘ |
| firstUsedIn |
1940 Cadillac
ⓘ
1940 Oldsmobile ⓘ |
| gearboxType | hydraulic automatic transmission ⓘ |
| hasComponent |
bands
ⓘ
fluid coupling ⓘ hydraulic control system ⓘ multi-plate clutches ⓘ planetary gearset ⓘ |
| historicalSignificance |
enabled widespread adoption of automatic transmissions in American cars
ⓘ
influenced later automatic transmission designs worldwide ⓘ |
| inception | 1939 ⓘ |
| introducedInModelYear | 1940 ⓘ |
| manufacturer | General Motors ⓘ |
| marketedAs |
Hydra-Matic automatic transmission
self-linksurface differs
ⓘ
surface form:
Hydra-Matic
|
| notableFor |
being one of the first mass-produced fully automatic automotive transmissions
ⓘ
use of a fluid coupling instead of a torque converter in early versions ⓘ |
| numberOfForwardGears | 4 ⓘ |
| operatingPrinciple | hydraulically controlled automatic shifting ⓘ |
| replacedBy |
Jetaway transmission in some applications
ⓘ
Hydra-Matic automatic transmission self-linksurface differs ⓘ
surface form:
Turbo-Hydramatic transmission
|
| shiftPattern | P-N-D-L-R in early versions ⓘ |
| usedBy |
British automakers under license
ⓘ
multiple American automakers under license ⓘ |
| usedIn |
Bentley
ⓘ
surface form:
Bentley vehicles
Cadillac ⓘ
surface form:
Cadillac vehicles
Chevrolet commercial vehicles ⓘ
surface form:
Chevrolet trucks
GMC ⓘ
surface form:
GMC trucks
Hudson vehicles ⓘ Kaiser-Frazer vehicles ⓘ Lincoln vehicles ⓘ M18 Hellcat tank destroyer ⓘ M24 Chaffee light tank ⓘ
surface form:
M24 Chaffee tank
Stuart light tank ⓘ
surface form:
M5 Stuart tank
Nash vehicles ⓘ Oldsmobile ⓘ
surface form:
Oldsmobile vehicles
Pontiac vehicles ⓘ Rolls-Royce vehicles ⓘ World War II armored vehicles ⓘ military vehicles ⓘ |
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: Hydra-Matic automatic transmission Description of subject: The Hydra-Matic automatic transmission was one of the first mass-produced fully automatic automotive transmissions, developed by General Motors and widely used in mid-20th-century American cars.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Oldsmobile 88
Hydra-Matic automatic transmission
→
developer
→
Hydra-Matic automatic transmission
self-linksurface differs
ⓘ
this entity surface form:
GM Hydra-Matic Division
Hydra-Matic automatic transmission
→
marketedAs
→
Hydra-Matic automatic transmission
self-linksurface differs
ⓘ
this entity surface form:
Hydra-Matic
Hydra-Matic automatic transmission
→
replacedBy
→
Hydra-Matic automatic transmission
self-linksurface differs
ⓘ
this entity surface form:
Turbo-Hydramatic transmission