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Sectioned example of Joy's Assistant Cylinder for Slide Valves

Sectioned example of Joy's Assistant Cylinder for Slide Valves

1889
Series of examples illustrating growth of the Nernst Electric lamp

Series of examples illustrating growth of the Nernst Electric lamp

1897-1903
Metal base or part from a Nernst Electric lamp

Series of examples illustrating growth of the Nernst Electric lamp

1897-1903
2 examples of Paget reflection colour process.

2 examples of Paget reflection colour process.

Example, drum wound motor armature, with slotted core, 2 bhp.

Example, drum wound motor armature