And when the short brush is stopped a rod from the shaft frees a spring detent which keeps the drum in position and tips it over.
2
In dropping it dislodges the detent of the reducing slide, and the slide springs forward and reduces the flow of the sugar.
3
Invented the cylindrical balance spring and the detached detent escapement (1782 ).
4
The tea is shot out and falls into a receptacle below, and the drum makes a quarter of a revolution, and is again held in position by the detent with an empty compartment at top ready for the next filling.
5
Thomas Earnshaw made further simplifications, including the spring detent escapement which needed no lubrication.