Page 355 - The Ashley Book of Knots
P. 355
THE ASHLEY BOOK OF KNOTS
2140. In the timber industry, rope is used in making log rafts and
in lashing loads. On the west coast huge rafts several hundred feet
in length have been lashed with chain cable and towed many hun-
dreds of miles. Log booms are found in spar yards and along rivers.
Long spars are either lashed or chained together to form an enclosure
around the floating logs.
Army engineers have in all past wars used a great deal of rope
2.140
lashing in bridge building, field fortification, etc. This is gone into
exhaustively in the United States Government Engineers' Field
Manual.
In raft making, after several turns of rope have been passed loosely
around two floating logs, a rack bar or pole is inserted under the
- - turns and the lashing tightened by twisting with the bar horizontally.
-
Two of these lashings are made near enough together so that the
ends of two bars can be tied to each other. The lashings of the two
must be twisted in the same direction, preferably "with the lay" of
the rope. A hard-laid rope will not stand as much twisting as a soft-
laid one.
- 2141. If rope is very large it will be found simpler to make up the
- - lashing as pictured here. It is twisted horizontally as before de-
scribed. In principle this does not differ from the surgeon's tourni-
2.142.
quet given as '# 1259.
2142. Ropes may be knotted as here shown and ti~htened with a
bar. Put a MARLINGSPIKE HITCH in one end of a rope and pry, using
the side or end of the log for a fulcrum. With large material a rack
bar will be necessary.
2143. A load of logs may be secured to a sled with a lashing
2.143 similar to '# 2 140. A much longer bar is used and the end is made fast
to the sled.
2144. Stakes are required if a considerable number of logs are to
be lashed. Tough green saplings are cut for stakes and the tops of
these are notched and lashed together across the load. The lashings
are ti htened b twisting in a vertical plane and tying the ends of the
rack ars toget er the same as in #2140.
2145. The knot shown here is used in lashing timbers. The edge
of the timber provides a shoulder for the end of the rope so that little
strain comes on the SLIP Loop. A bight is tucked under all three
turns, then another bight through the first one.
Stones are slung under a high gear, using one or more straps of
1,144\- chain, which are twisted tight with rack bars.
Slinging is the arranging of ropes or straps around an object by
means of which the object is to be hoisted and lowered, or else sus-
pended. Tools are slung when sent aloft on the end of a rope, cargo
is slung when taken aboard, a sunken vessel is slung before it is
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