Grasshopper Escapement Spring

The

Here is a version of Harrison's famous

Four minute escape wheel No sliding friction, no wear, no lubrication Entry angle = 90 degrees Exit angle = 89.73 degrees Thank ...

more information refer to the site http://www.davewestclocks.co.uk/unusual_clocks/grasshopper_skeleton_clock.htm.

1. clearly visible escape wheel recoil, induced by pendulum overswing 2. the composers clearly visible lift from their resting ...

The

A simple

Grasshopper escapement

This second

The

The pair of counter-rotating

Sir George Biddell Airy (1801 - 1892) was Astronomer Royal of the UK from 1835 to 1881. The small escape-wheel is driven by ...

Dent Harrison with

This is a first testing of a

This is a CAD model animation for John Harrison's

Prototype of my new

This is a conversion of Bill Simth's design to use a standard Harrison type single pivot

This is an artistic representation in wood inspired by John Harrison's

This is a short animation of a