Manuscripts/Mixed Material Bulletins, from January 4, 1909 to April 12, 1909
for an attractive toy.
I suggested two whirling wings supporting between them the figure of a man (Fig. 3).
Mr. Gardiner Bell suggested coiling a string around an axis and pulling it so as to give a good initial rotation; and I suggested a small central balance wheel to keep up the rotation.
On Jan. 23, Mr. Gardiner Bell submitted a model shown in Fig. 4 to carry out the idea of central loading. This was of silk with a framework of wood.
I submitted a whirling sheet of stiff paper with a steel knitting needle run through it as a central axis, Fig. 5. This whirled very well but with a curious flapping noise suggesting the idea that the axis of rotation was not in the middle line of the paper where the knitting needle was placed but that the load swung around the axis of rotation occasioning the flapping sound.
During my recent visit to Washington I met the Hon. Butler Ames, Representative from Mass. at the White House, and learned from him that he is employing whirling aeroplanes in an actual flying-machine with which he is experimenting. A.G.B.