This is a historical document from the Rubicon Research Repository achieves that I downloaded years ago. It is:
EVALUATION REPORT 9-60
EVALUATION OF DACOR DIVING LUNG WITH DIAL-A-BREATH FEATURE
By
R.L. Gwinn, MMI(DV), UNS
G.M. Janney, LTJG, UNSR
21 Deceember 1959
"It is recommended that the new dacor diving Lung with the Dial-A-Breath feature not be accepted for use in the U.S. Navy. It is further recommended that the manufacturer reduce the breathing resistance of the regulator before resubmitting it for evaluation."
This is a 20-page technical document from the Naval Experimental Diving Unit (NEDU) showing results of testing the Dacor Dial-A-Breath regulator in 1959. It has drawings, and graphs of breathing resistance under different conditions.
SeaRat
EVALUATION REPORT 9-60
EVALUATION OF DACOR DIVING LUNG WITH DIAL-A-BREATH FEATURE
By
R.L. Gwinn, MMI(DV), UNS
G.M. Janney, LTJG, UNSR
21 Deceember 1959
"It is recommended that the new dacor diving Lung with the Dial-A-Breath feature not be accepted for use in the U.S. Navy. It is further recommended that the manufacturer reduce the breathing resistance of the regulator before resubmitting it for evaluation."
This is a 20-page technical document from the Naval Experimental Diving Unit (NEDU) showing results of testing the Dacor Dial-A-Breath regulator in 1959. It has drawings, and graphs of breathing resistance under different conditions.
SeaRat