A rear view of the full-size semi-biplane in the Westmorland Hills, 1912.

Early launching experiments using a knife-edge track were not successful. The glider is here seen in its second form.

Two views depicting a launch of the third variant of the semi-biplane, using the successful weight and derrick system.

In this view, captioned "First crash of No 3”, quite a number of additional struts are visible when compared to the machine in its original form.

A shot of the glider in its third and final form, during a good glide after a launch near Ingleborough Dell, Westmorland, towards the end of 1912.

The two moulded papier mache models tested in the Lancaster drill hall in 1911. Left, the Kitchen-type model with arched leading edges and dihedral tail, right, the less eccentric wing proposed by Richards.

Testing the final, silk-covered "semi-biplane” model in 1911.