Den Norske Nordhavs-expedition 1876-1878 / The Norwegian North-Atlantic Expedition 1876-1878 / 1. Bind / 5 (1880-1901) Table of Contents / Innehåll | << Previous | Next >>
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var 0.m41 (1 Fod 4 Tom.) lange og 0.m42 (1 Fod 4 Tom.)
i Diameter. Tapperne om Bagbord, der brugtes til
Ind-hivuiug af Lodlinen, vare 0."’41 lange og 0.’"73 (2 Fod
4 Tom.) i Diameter. Alle 4 Tapper havde ö Furer eller
Rifler. Afstanden mellem forreste og agterste Tappecentrer
var 1 ."’14 (3 Fod 7.(5 Tom.). Tapperne blev saaledes drevne
samtidig rundt med lige Hastighed og samme Vej.
Maskinen vigte sig særdeles hensigtsmæssig, idet den arbejdede
sikkert og kraftigt, kunde baade hale og fire, uden at man
behovede at skifte Linen paa Tapperne, og man undgik

by keys. The drums on the starboard side, for hauling
in the dredge-rope, had a length of 1 foot 4x/4 inches, and
were 1 foot 41/-2 inches in diameter; those on the port
side, for bringing in the sounding-line, had a length of 1
foot 41/* inches, with a diameter of 2 feet 47/8 inches. The
4 drums had each of them 5 flutes, or grooves. Between
the foremost and hindmost pair of drums, measured from
centre to centre, the distance was 3 feet 95/l(; inches. Hence
it is obvious, that the drums would revolve simultaneously,
with equal velocity and in the same direction. The donkey-

Fig. 5.

Skrændsningen, der folger med Indhivning paa én
konkav Tap. De store Tapper om Bagbord tog ind 100 Favne
(183 Meter) af Lodlinen i 3 Minuter, og de smaa om
Styrbord 1U0 Favne af Skrabetouget i 6 å 7 Minuter.

I Begyndelsen blev den brugte Damp fra
Højtryks-cylinderne ledet i en Slange over Dækket og ud over
Skibssiden om Styrbord. Da Dampen ved dette Arrangement
jevnlig. blæstes ind over Dækket og generede, sattes et
Kobberrør som Dampskorsten ret op bag Stormasten,
hvorved den nævnte Ulempe hævedes.

engine proved a most efficient little machine, working with
surprising steadiness and ease; we could haul in or pay out
the line without having to shift it on the drums, and there
was no surging, which cannot be avoided when the drum is
concave. The large drums on the port side delivered 100
fathoms of sounding-line in 3 minutes, and the .small ones on the
starboard side, 100 fathoms of dredge-rope in 6 or 7 minutes.

On the first cruise, the waste steam escaped through
a hose on deck over the starboard side of the vessel; but
being with this arrangement, frequently blown back, to the
inconvenience of those on deck, the following year a copper
steam-pipe was put up abaft the mainmast to get rid of
the nuisance.

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