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Lifting equipment, also known as lifting gear, is a general term for any equipment that can be used to lift and lower loads. [1] Types of lifting equipment include heavy machinery such as the patient lift , overhead cranes , forklifts , jacks , building cradles, and passenger lifts, and can also include smaller accessories such as chains ...
The anchor is shackled to the anchor cable (US anchor chain), the cable passes up through the hawsepipe, through the pawl, over the windlass gypsy (US wildcat) down through the "spurling pipe" to the chain/cable locker under the forecastle (or poop if at the stern (US fantail)) - the anchor bitts are on a bulkhead in the cable locker and the bitter end of the cable is connected to the bitts ...
Vitruvius, a military engineer writing about 28 BC, defined a machine as "a combination of timber fastened together, chiefly efficacious in moving great weights."About a century later, Hero of Alexandria summarized the practice of his day by naming the "five simple machines" for "moving a given weight by a given force" as the lever, windlass, screw for power, wedge, and tackle block (pulley).
This is a vertical spool with a ratchet mechanism similar to a conventional winch, but with no crank handle or other form of drive. [7] The line is wrapped around the spool and can be tightened or reeled in by pulling the tail line. The winch takes the load once the pull is stopped with little operator tension needed to hold it.
Vertical lift bridges in the United States by state or territory (10 C) Pages in category "Vertical lift bridges in the United States" The following 34 pages are in this category, out of 34 total.
A logging donkey consists of a steam boiler and steam engine, [5] [6] connected to a winch mounted on a sled called a donkey sled. [7] [8] The donkeys were moved by simply dragging themselves with the winch line, originally hemp rope and later steel cable. They were used to move logs, by attaching lines to the logs and hauling them.
The first liftboat was designed in 1955 by brothers Lynn and Orin Dean in Violet, Louisiana.In the 1950s the Dean brothers owned a repair service for automobiles, marine, and farm equipment called Universal Repair Service, which is now known as EBI, Elevating Boats LLC.