10 



Aabning paa liver Side. Stykket b. der har en Bredde-, som 

 er noget mindre end Koret a's indvendige Diameter, er 

 indsat i dette saaledes, at Knasterne ved b's nedre Ende 

 kommer frem i Sideaabuingerne, og Stykket 6 kan saaledes 

 bevæges op og ned. fra at Knasten støder an mod Over- 

 kant til den støder an mod Underkant af Aabningen. I 

 sidste Tiifælde er b ganske skjult inde i Koret med Und- 

 tagelse af Ringen. I den nedre Ende af Røret a er an- 

 bragt den samme Indretning til Optagning af Bundprøve 

 som paa Rør-Loddet. 



Til Maskinen horer Jernlodderne c, c, <:. af hvilke 

 hvert har en Vægt af omtrent 27 Kilogram (55 Pd.). De 

 ere korte Cylindre af stobt .Jern med et Hul i Midten af 

 noget større Diameter end Roret a's og med Knaster paa 

 Oversiden samt tilsvarende Fordybninger paa Undersiden 

 og desuden en Fure paa begge Sider, der ligger i Knaster- 

 nes og Fordybningernes Plan. Naar det ene Lod stables 

 ovenpaa det andet, danner deres Furer en fortløbende 

 Rende. Underlod og Overlod har særskilt Form, som Fi- 

 guren viser, idet det første er kugleformig afrundet paa 

 Undersiden, for at gjøre mindre Modstand mod Våndet, 

 og det sidste er noget konisk. 



Naar Baillie-Maskinen skal rigges, bruges en' større 

 cylindrisk Træblok med et Hul i Midten. Over dette beg- 

 ges Ringen' d, der er af Støbejern, med isatte Jerntraade, 

 og man stabler nu Lodderne ovenpaa, saa mange som man 

 anser fornødent for med Sikkerhed at kunne angive Øje- 

 blikket, da Loddet slaar r Bund. Derefter sættes Røret 

 a gjennem Hullerne i Lodderne og Træblokken, Stykket b 

 loftes op. Jerntraadene lægges i Jernloddernes Sidefurer. 

 og Ringene / bukes paa de øvre Afsatser paa b. Naar 

 man nu løfter op i Lodlinen, der er bexet fast til Ringen 

 i Stykket ' b. hænge Lodderne paa Afsatserne paa Styk- 

 ket b. og Røret a bænger med Overkant af Sideaabnin- 

 gerne paa Knasterne ved den nedre Ende af b, som i 

 Figuren. Naar Maskinen støder mod Bunden, bliver det 

 lost hængeride Ror a drevet op og trykker med sin øvre 

 koniske og afrundede Del Ringene f ud af Afsatserne paa 

 6, Derved er Forbindelsen mellem Jernlodderne og Lod- 

 linen opbævet. Lodderne med Ringen d, Jerntraadene og 

 Ringene f falde ned og blive liggende paa Havbunden. 

 medens Røret a og Stykket b bringes op til Overdåden, 

 naar Lodlinen hives ind. 



Der blev anvendt indtil S Lodder af samlet Vægt 

 216 Kilogram (432 Pd.). Røret, der hales op, vejer kun 

 17.5 Kilogram (35 Pd.). 



Baillie-Maskinen viste sig at være et udmærket Ap- 

 parat, idet Lodderne hver eneste (lang. den brugtes, gik af 

 Røret, om ejul Bunden var noksaa blød. I len eneste Van- 



and farther down. in a line with the latter, two other 

 openings. one on either side. The piston-iron b, not quite 

 equal in width to the inner diameter of a, being so fitted 

 into the tube that the studs at its lower extremity correspond 

 with the afdresaid slots. or openings, can accordingly work 

 up and down within those limits. When the studs are at 

 the bottom of the slots. the piston-iron b is just within the 

 br.ass or upper end of the tube, the ring only by which 

 the instrument is shackled to the sounding-line being tben 

 above it. For bringing up samples of the bottom, the 

 lower end of the tube has an arrangement similar to that 

 at the bottom of the tube-lead. 



To the machine belong a. number of sinkers c, c, c, 

 weighing eacb about 55 pounds, — short cast-iron cylinders, 

 with- a hole through the middle slightly exceediug in diam- 

 eter the tube of the instrument, and toothed and notched 

 so as to tit into one another and make one mass, also hav- 

 ing a groove on either side in the same plane with the 

 notches. The top and bottom sinkers differ in shape, the 

 former being slightly conical, and the latter baving the lower 

 end spherically rounded, to diminish the resistance and thus 

 increase the velocity in descending. 



The Baillié machine was placed for adjustment on 

 a cylinder of wood, baving a hole through the middle 

 stfmewhat greater in diameter than that of the tube a. 

 Over the bore of the cylinder is placed a cast-iron ring 

 d. with iron wires attached ; and upou the ring are 

 piled a number of sinkers, sufficient to determine the 

 exact moment at which the instrument reaches the bottom. 

 The lower part of the tube a is next passed through the 

 sinkers into the wooden cylinder beneath; and after draw- 

 ing out the piston-iron b. the wires, forming a sling, are 

 laid in the groove along the sides of the sinkers, and 

 the rings f hooked upon the shoulders of the piston. 

 Now. on the instrument being hung to the sounding-line 

 by the ring of the piston-iron, the sinkers will depend, 

 on the iron -wire sling, from the shoulders of b, and 

 the tube a from the lower studs that retain the piston- 

 iron in position, the brass cylinder being pulled down the 

 entire length of the slots. as shown in the tigure. When 

 the tube and the weights touch the bottom, the brass cy- 

 linder is pushed upward the length of the slots, and its 

 top rim striking against the rings /, the sling is slipped 

 off the shoulders of the piston-iron. The sinkers, being thus 

 deprived of their support, drop, carrying with them the 

 ring d, the wires of the sling, and the rings f, down the 

 tube ((. which. on bauling in the line. comes up alone. with 

 the piston-rod and a sample of the bottom. 



For some soundings we used as many as 8 sinkers, 

 weighing together 432 pounds. The weight of the tube is 

 only 35 pounds. 



The Baillie machine proved an excellent apparatus, 

 the weights being witbout exception dotached from the 

 tube. however sutt (he bottom. The only difticulty 



