Two trochoided plane boat propellers, also two models of floats propelled by the waves.
A double vessel in which the boats themselves are the propeller.
Trochoided Plane anemometer on a windmill.
Two models showing trochoidal actions of fish swimming.
A model of trochoidal action of many footed progression and another model of trochoidal action demonstrating how to float and propel itself in water.
A Model showing six footed trochoidal progression and gravitational horizontal rudder for a flying machine.
Model showing one form of serpentine progression.
8 small India rubber-driven flying machines.
Small clockwork flying machines on a tricycle.
24 band flying machine A, similar to that described in Royal Society paper from 2nd December 1885.
24 band flying machine C. This was described in a paper published on 1st June 1887.
24 band flying machine. H. J. K. observations, 7th December 1887.
A 24 band flying machine.
An 8 band flying machine.
A 48 band flying machine. An enlargement of this machine is shown on page 16 of Hargrave's Evolution of the flying machine I.
An enlargement of a 48 band flying machine. The fuller version is shown on page 15 of Hargrave's Evolution of the flying machine I.
Large machine on wheels. Described on 1st June 1887.
First compressed air engine and indicator.
Rough chronographic apparatus with three cylinder screw eninge attached.
Bow and stern screw flying machine.
48 band stern screw flying machine. Described on 7th Augist 1889.
An engine for patroleum spirit vapour.
Section of a flying machine strut that has stood a crushing strain of 360 pounds. The strut was originally 6 feet 2 inches and had three bulkheads 18 inches apart.
A three cylinder screw engine.