【化】 转臂起重机; 动臂起重机; 全转式起重机

Crane \Crane\ (kr[=a]n), n. [AS. cran; akin to D. & LG. craan,
G. kranich, krahn (this in sense 2), Gr. ge`ranos, L. grus,
W. & Armor. garan, OSlav. zerav[i^], Lith. gerve, Icel.
trani, Sw. trana, Dan. trane. [root]24. Cf. {Geranium}.]
1. (Zo["o]l.) A wading bird of the genus {Grus}, and allied
genera, of various species, having a long, straight bill,
and long legs and neck.

Note: The common European crane is {Grus cinerea}. The
sand-hill crane ({Grus Mexicana}) and the whooping
crane ({Grus Americana}) are large American species.
The Balearic or crowned crane is {Balearica pavonina}.
The name is sometimes erroneously applied to the herons
and cormorants.

2. Any arm which swings about a vertical axis at one end,
used for supporting a suspended weight.
[Webster 1913 Suppl.]

3. A machine for raising and lowering heavy weights, and,
while holding them suspended, transporting them through a
limited lateral distance. In one form it consists of a
projecting arm or jib of timber or iron, a rotating post
or base, and the necessary tackle, windlass, etc.; -- so
called from a fancied similarity between its arm and the
neck of a crane See Illust. of {Derrick}.

4. An iron arm with horizontal motion, attached to the side
or back of a fireplace, for supporting kettles, etc., over
a fire.

5. A siphon, or bent pipe, for drawing liquors out of a cask.

6. (Naut.) A forked post or projecting bracket to support
spars, etc., -- generally used in pairs. See {Crotch}, 2.

7. (Zo["o]l.) The American blue heron ({Ardea herodias}).
[Local, U. S.]
[Webster 1913 Suppl.]

{Crane fly} (Zo["o]l.), a dipterous insect with long legs, of
the genus {Tipula}.

{Derrick crane}. See {Derrick}.

{Gigantic crane}. (Zo["o]l.) See {Adjutant}, n., 3.

{Traveling crane}, {Traveler crane}, {Traversing crane}
(Mach.), a crane mounted on wheels; esp., an overhead
crane consisting of a crab or other hoisting apparatus
traveling on rails or beams fixed overhead, as in a
machine shop or foundry.

{Water crane}, a kind of hydrant with a long swinging spout,
for filling locomotive tenders, water carts, etc., with
water.


Derrick \Der"rick\, n. [Orig., a gallows, from a hangman named
Derrick. The name is of Dutch origin; D. Diederik, Dierryk,
prop. meaning, chief of the people; cf. AS. pe['o]dric, E.
Theodoric, G. Dietrich. See {Dutch}, and {Rich}.]
1. A mast, spar, or tall frame, supported at the top by stays
or guys, and usually pivoted at the base, with suitable
tackle for hoisting heavy weights, such as stones in
building.

2. (Mining) The pyramidal structure or tower over a deep
drill hole, such as that of an oil well (also called an
oil derrick .
[Webster 1913 Suppl. +PJC]

{Derrick crane}, a combination of the derrick and the crane,
having facility for hoisting and also for swinging the
load horizontally.