Images Dated 25th January 2014 (#90)

80ft two-celled kite. Hargrave Slide 71

Four-celled kite. Hargrave Slide 70

Two-celled kite. Hargrave Slide 69

Hargrave with I-celled kite. Hargrave Slide 68

Four-decker compressed-air driven model. Hargrave Slide 67

Twin double-acting cylinder motor. Hargrave Slide 66

Twin double-acting cylinder motor. Hargrave Slide 65

Hydroplane model (close-up). Hargrave Slide 64

Hydroplane model. Hargrave Slide 63

Hydroplane model. Hargrave Slide 62

Hydroplane model. Hargrave Slide 60

Close-up of Otto-cycle engine. Hargrave Slide 59

Otto-cycle engine four-cylinder I crank engine
Otto-cycle engine four-cylinder I crankengine. Hargrave Slide 58

Objects used in soaring tests. Hargrave Slide 57

Objects used in soaring tests. Hargrave Slide 56

Objects used in soaring tests. Hargrave Slide 55

Objects used in soaring tests. Hargrave Slide 54

Objects used in soaring tests. Hargrave Slide 53

Objects used in soaring experiments. Hargrave Slide 52

Objects used in soaring experiments. Hargrave Slide 51

Objects used in soaring experiments. Hargrave Slide 50

Objects used in soaring experiments. Hargrave Slide 49

Two cylinder steam engine. Hargrave Slide 48

Two cylinder steam engine. Hargrave Slide 47

Objects used in soaring experiments. Hargrave Slide 46

Method of testing objects for soaring without damage by striking the ground. Hargrave Slide 42

Soaring experiments. Hargrave Slide 44

Soaring experiments. Hargrave Slide 43

Steam engine with flash boiler and balanced wings. Hargrave Slide 40a

Steam engine with flash boiler and balanced wings. Hargrave Slide 40

Small Laval turbine on screw. Hargrave Slide 39

Hargrave and James Swaine experimenting with four man-lifting kites. Hargrave Slide 38

Further evolution of the cellular kite. Hargrave Slide 36

Evolution of the cellular kite. Hargrave Slide 35

Some steam-jet motors. Hargrave Slide 34

A larger model of the flapping wing machine. Hargrave Slide 33

Steam engine operating flapping wings. Hargrave Slide 32

Duplicate of engine sent to America. Hargrave Slide 31

Wave-propelled vessel weighing 12 5lb
Wave-propelled vessel weighing 12.5lb. Hargrave Slide 30

Compressed air flying machine shown at Chicago Exhibition (now in Smithsonian). Hargrave Slide 29

Compressed air bow screw machine. Hargrave Slide 28

Larger model compressed air flying machine. Hargrave Slide 27

Compressed air flying machine. Hargrave Slide 26

Three-cylinder engine revolving on fixed crankshaft. Hargrave Slide 25

Figure-of-eight described by trochoidal plane. Hargrave Slide 24

Naptha engine machine. Hargrave Slide 23

48-band stern screw machine. Hargrave Slide 22

Bow and stern screw dihedral angle machines. Hargrave Slide 21

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