John Harrison's grasshopper escapement
GPTKB entity
Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
escapement mechanism
|
| gptkbp:component |
gptkb:Harrison's_H1_clock
gptkb:Harrison's_H2_clock gptkb:Harrison's_H3_clock |
| https://www.w3.org/2000/01/rdf-schema#label |
John Harrison's grasshopper escapement
|
| gptkbp:influenced |
later clock escapements
|
| gptkbp:influencedBy |
verge escapement
|
| gptkbp:introducedIn |
gptkb:Barrow-upon-Humber,_England
|
| gptkbp:inventedBy |
gptkb:John_Harrison
1722 |
| gptkbp:material |
brass
|
| gptkbp:notableFor |
low friction
reduced need for lubrication |
| gptkbp:usedIn |
precision pendulum clocks
|
| gptkbp:bfsParent |
gptkb:Grasshopper_clock
|
| gptkbp:bfsLayer |
7
|