a bad defect of the apparatus
under trial.'

Answer.--I believe that the apparatus fell on its side after coming to
a stop, not on account of the wind, but because the semicircle described
was on rough ground and one of the wheels had collapsed.

Mensier.

October 27th, 1897.

APPENDIX B

Specification and Claims of Wright Patent, No. 821393. Filed March 23rd,
1903. Issued May 22nd, 1906. Expires May 22nd, 1923.

To all whom it may concern.

Be it known that we, Orville Wright and Wilbur Wright, citizens of the
United States, residing in the city of Dayton, county of Montgomery,
and State of Ohio, have invented certain new and useful Improvements in
Flying Machines, of which the following is a specification.

Our invention relates to that class of flying-machines in which
the weight is sustained by the reactions resulting when one or more
aeroplanes are moved through the air edgewise at a small angle of
incidence, either by the application of mechanical power or by the
utilisation of the force of gravity.

The objects of our invention are to provide means for maintaining
or restoring the equilibrium or lateral balance of the apparatus, to
provide means for guiding the machine both vertically and horizontally,
and to provide a structure combining lightness, strength, convenience of
construction and certain other advantages which will hereinafter appear.

To these ends our invention consists in certain novel features, which we
will now proceed to describe and will then particularly point out in the
claims. In the accompanying drawings, Figure I 1 is a perspective view
of an apparatus embodying our invention in one form. Fig. 2 is a plan
view of the same, partly in horizontal section and partly broken away.
Fig. 3 is a side elevation, and Figs. 4 and 5 are detail views, of one
form of flexible joint for connecting the upright standards with the
aeroplanes.

In flying machines of the character to which this invention relates the
apparatus is supported in the air by reason of the contact between the
air and the under surface of one or more aeroplanes, the contact surface
being presented at a small angle of incidence to the air. The relative
movements of the air and aeroplane may be derived from the motion of
the air in the form of wind blowing in the direction opposite to that in
which the apparatus is travelling or by a combined downward and forward
movement of the