391
HELICAL SPRINGS
No. 10312—Continued.
Height.	Load sustained.	Remarks.
Inches.	Pounds.	
17.93	100	Initial load. Loads applied and released without jarring.
16.70	200	
15.70	300	
14.99	400	
14.09	500	
12.93	600	
10.57	700	
9.54	800	
7.91	900	
7.91	800	
8.28	700	
9.87	600	
11.38	500	Rested under load three-fourths of an hour without change in height.
12.99	400	
14.68	300	
16.27	200	
17. 96	100	
Center rod turned down to 2״ diameter.		
17.94	100	Initial load. Loads applied and released without jarring.
16.37	200	
14.80	300	
13.28	400	
11.80	500	
10.25	600	
8.70	700	
7.98	800	
8.40	700	
9.89	600	
11.52	500	
13.03	400	
14.71	300	
16.25	200	
17.98	100	
Spring in yoke fixture having 4 side rods, the inside elements of which were on a circle 3 diameter.		
17.94	100	Continuous jarring as loads were changed.
16.34	200	
14.83	300	
13.16	400	
11.69	500	
10.12	600	
8.60	700	
8.08	800	
8.31	700	
9.15	600	
10.84	500	
12.46	400	
14.08	300	
15.70	200	
17.50	100	
8.08	800	
17.46	100	
	0	Rested 16 hours.
17.94	100	
16.31	200	
14.73	300	
13.25	400	
11.73	500	
9.87	600	
8.50	700	
8.03	800	
8.37	700	
9.21	600	
10.63	500	
12.51	400	
14.02	300	
15.70	200	
17.49	100