. 
38 
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Revolutions per second. 
Fig. 16—Four Armed Wheel—Straight Arms. 
' Deformations at various positions on rim at rising speeds. Bays Band D. 
No. 6, Arm CD. 
No. 2, Bay B, 11°25° from arm AB; No.7, Bay D, 11:25° from arm CD; 
No. 1. Arm AB. 
No. 3, 22°5°; No. 4, 33°75°; No.5, 45° 
12 
14 16 18 20 
Curves shewing Radial 
No.8, 22°5°; No.9, 33°75°; No. 10, 45° 
