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Longcase clock by James and John Harrison

Longcase clock by James and John Harrison

1728
Longcase clock movement by John and James Harrison

Longcase clock movement by John and James Harrison

1726-1728
Drive weights from the eight-day weight driven clock by John Harrison

Drive weights from the eight-day weight driven clock by John Harrison

1715
Door lock key

Door lock key

1715
Drive weights from the eight-day weight driven clock by John Harrison

Drive weights from the eight-day weight driven clock by John Harrison

1715
Striking longcase clock movement by John Harrison, Barrow-upon Humber, North Lincolnshire, 1713. Oak dial with brass chapter ring and spandrels, and date aperture. Signed on the chapter ring 'John Harrison, Barrow, fecit'. The winding hole is concealed behind the lower spandrel. Movement of eight-day duration, with anchor escapement. The frame and most of the wheels are made of wood. Signed ‘Jon Harrison 1713’ in ink on the calendar wheel.

Earliest known eight-day longcase clock movement by John Harrison

1713
Original eight day clock by Harrison, date 1715, wheel work mostly of wood, weight driven

Weight driven pendulum clock

1715
Clock, longcase parts

Longcase clock movement

1726
Clock made up weight, perhaps made by James Harrison

Clock made up weight

Longcase clock equation table

Longcase clock equation table

1717
Pendulum from the eight-day weight driven clock by John Harrison, Barrow-upon-Humber, North Lincolnshire, England, United Kingdom, 1715

Pendulum from the eight-day weight driven clock by John Harrison

1715