artefacts: 194
This data as json
| rowid | artifactNumber | ObjectName | GeneralDescription | model | SerialNumber | Manufacturer | ManuCountry | ManuProvince | ManuCity | BeginDate | EndDate | date_qualifier | patent | NumberOfComponents | ArtifactFinish | ContextCanada | ContextFunction | ContextTechnical | group1 | category1 | subcategory1 | group2 | category2 | subcategory2 | group3 | category3 | subcategory3 | material | Length | Width | Height | Thickness | Weight | Diameter | image | thumbnail | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 194 | 1966.0171.001 | Valve gear model | WOOD BASE/ METAL | GRAND TRUNK WESTERN RWY | United States of America | 1930 | circa | 1 | BASE PAINTED BLACK/ BLACK AND GREY PAINTED VALVE GEAR WITH WHITE PARTS | USED EXTENSIVELY IN EUROPE & IN NORTH AMERICA FROM 1890 ON. | USED TO DEMONSTRATE VALVE EVENTS - VALVE GEARS ARE THE MECHANISM THAT TRANSMIT MOTION TO THE VALVES WHICH ADMIT STEAM TO & EXHAUST IT FROM THE CYLINDERS (1). | INVENTED IN 1843 BY ECIDE WALSCHAERTS & NEXT TO STEPHENSON GEAR THE MOST COMMONLY USED VALVE GEAR ON STEAM LOCOMOTIVES. | Railway Transportation | Models | wood;metal | 149.5 | 30.3 | 81.5 | http://source.techno-science.ca/artifacts-artefacts/images/1966.0171.001.aa.cs.png | http://source.techno-science.ca/artifacts-artefacts/images/1966.0171.001.aa.cs.thumb.png |
