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This specific example uses a level luffing mechanism to maintain the load at approximately the same vertical height as the jib moves through its range of travel. A jib or jib arm is the horizontal or near-horizontal beam used in many types of crane to support the load clear of the main support. [1] [2] An archaic spelling is gib. [3]
A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [1] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
M3A1 Vehicle, Cavalry Fighting, full-track, armored, 25 mm chain-gun, 21 1 ⁄ 2-ton M3A2 Vehicle, Cavalry Fighting, full-track, armored, 25 mm chain-gun, 21 1 ⁄ 2 -ton M3 CROP palletized load system
The RML 12-inch 25-ton guns were large rifled muzzle-loading guns of mid-late 1800s used as primary armament on British ironclad turret battleships and coastal monitors, and also ashore for coast defence. They were the shorter and less powerful of the two 12-inch (305-mm) British RML guns, the other being the 35-ton gun.
The 25-ton switcher was designed primarily for switching duties (moving railroad cars to and from loading/unloading facilities, as well as making up and breaking down trains), with both low power output and low top speed for a locomotive. While not very capable of hauling mainline trains, these features made it cheaper than most other locomotives.
This template adds the voltage of the electrification system of a rail system in a consistent way. Template parameters Parameter Description Type Status conductor conductor If ''third rail'', adds [[Third rail]] before the voltage, if ''overhead'', adds [[Overhead line]] before the voltage. Suggested values third rail overhead String optional
The Coles Hydra Speedcrane appeared in 1962, further modified with the 10-ton fully telescopic hydraulic boom in 1966, followed in 1968 by the 30-ton "Husky" military versions with four-wheel drive. In 1972, Steels was forced to merge with the Acrow Group, losing some of their most valuable employees, including Don Hassel and Johnny Johnson who ...
For information on using this template, see Template:Routemap. For pictograms used, see Commons:BSicon/Catalogue . Note: Per consensus and convention, most route-map templates are used in a single article in order to separate their complex and fragile syntax from normal article wikitext.