Submarine Appliances And Their Uses
Deep Sea Diving, &c., &c.
Forfatter: R. H. Davis
År: 1911
Forlag: Siebe, Gorman & Co., Ltd.
Sted: London
Sider: 183
UDK: 626.02
A Diving Manual
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T; VBLE I. —Continued.
De pth. Pressure Pounds per Square Inch. Time under Water, i.e., from Surface to Beginning of Ascent. Stoppages in Minutes at different Depths. Total Time for Ascent in Minutes. Number of Cylinders needed, f Î Revolu- tions of Pump per Minute, t
Feet. Fathoms. 60 ft. 50 ft. 40 ft. 30 ft. 20 ft. 10 ft.
60-66 10-11 26J-29< - ' Up to 15 mins. .. i to J hr 1 to 1 hr Î to 2 hrs 2 to 3 hrs 1 1 1 1 1 — — — 3 5 10 5 10 15 20 2 7 1 15 ; 22 I 32 J 2 , 25
66-72 11-12 291-32 Up to 15 mins. . . — 1 to 1 hr ; — 1 to 1 hr — 1 to 2 hrs — — — — 3 5 10 2 5 12 20 10 I 19 1 32 ! 2 25
72-78 12-13 32-341 Up to 20 mins. .. — 20 to 45 mins. . . — j to 1J hrs. .. — — — — 5 10 5 15 20 7 1 22 } 32 J 2 25
78-84 84-90 13-14 341-37 i Up to 20 mins. . . — ) 20 to 45 mins. .. j — Uto H hrs .. — — — — 5 10 5 15 20 7 1 22 - 32 J 2 30*
14-15 37-40 J 1 Up to 20 mins. . . — 20 to 40 mins. .. — 40 to 60 mins. . — 1 - — . —- 3 3 5 10 5 15 15 10 1 22 30 J 2 30*
90-96 15-16 40-421 J Up to 20 mins. .. — 20 to 35 mins. .. — 35 to 55 mins. .. — — — 5 3 5 10 5 15 15 11 1 32 J 2 30*
96-108 16-18 42|-48 J Up to 15 mins. .. — 15 to 30 mins. .. — 30 to 40 mins. . . — — — 3 5 3 7 10 5 10 15 11 1 23 33 J 4 4 20
108-120 18-20 48-53| Up to 15 mins. .. — 15 to 25 mins. . . — 25 to 35 mins. .. — —• — 2 5 5 3 5 10 7 10 15 15 1 23 - 33 J 20
120-132 20-22 53|-59 /Up to 15 mins. .. — ( 15 to 30 mins. .. — — — 2 5 5 10 7 15 17 1 33 / 4 25
132-144 22-24 59-64j /Up to 12 mins. . . — V12 to 25 mins. . . — — 2 3 5 5 10 5 12 16 Ï 32 J 4 25
144-156 24-26 641-70 /Up to 10 mins. .. — 110 to 20 mins. . . — 2 3 3 5 5 8 5 10 16 ! 31 J 4 25
156-168 26-28 70-75 f Up to 10 mins. .. — (10 to 16 mins. . . — 2 2 3 3 5 5 7 5 10 18 1 30 / 4 30*
168-180 28-30 75-80J ( Up to 9 mins. .. — (9 to 14 mins. .. — 2 2 3 3 5 5 7 5 10 18 \ 30 J 4 30*
180-192 30-32 80j-86 Up to 13 mins. .. — 2 3 5 7 10 30 6 25
192-204 32-34 86-911 Up to 12 mins. .. 2 i 2 3 5 7 10 32 6 25
i If found These fi per ce i.e., usir '* For ins difficult to maintain 30 revolutions, another cylinder may be used instead. gures are calculated on the supposition that the pump does not leak more than 20 nt. at pressures up to 60 lbs. Instructions as to testing of Pumps are given on page 36. Lg a Siebe-Gorman Two Cylinder Double-acting Pump. tructions as to time for descent, see pages 50 and 51.
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