36 
34 
4 
Deflections 0:000075 inch. 
—6 : 5 u 
0 2 4. 6 8 10 12 14 16 18 
Revolutions per second. 
Fig. 25—Four Armed Wheel, jointed along thearms. Curves shewing 
radial deformations at various positions on rim at rising speeds. 
No.1, Arm AB. No.2, Bay A, 78°85° from Arm AD; No. 8, 67°5°; 
No. 4, 56°25°; No. 5,45°. No.6, Arm CD. No. 7, Bay OC, 78°75° from 
Arm BC; No. 8, 67°5°; No. 9, 56°25°; No. 10, 45°. 
