fifth wheel


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fifth wheel

n.
1.
a. A wheel or portion of a wheel placed horizontally over the forward axle of a carriage to provide support and stability during turns.
b. A similar device over the rear axle or axles of a tractor or pickup truck, serving as a coupling for a semitrailer.
2. An additional wheel carried on a four-wheeled vehicle as a spare.
3. An extra and unnecessary person or thing.

fifth wheel

n
1. (Mechanical Engineering) a spare wheel for a four-wheeled vehicle
2. (Mechanical Engineering)
a. the coupling table of an articulated vehicle
b. a steering bearing that enables the front axle of a horse-drawn vehicle to rotate relative to the body
3. a superfluous or unnecessary person or thing

fifth′ wheel′


n.
1. a horizontal ring or segment of a ring, consisting of two bands that slide on each other, placed above the front axle of a carriage and designed to support the forepart of the body while allowing it to turn freely in a horizontal plane.
2. a superfluous or unwanted person or thing.
[1870–75]

Fifth wheel

Before the advent of trucks, the fifth wheel was a semicircular iron ring attached to a wagon’s front axle to give additional support to the rest of the Running gear as the axle pivoted during turns.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Fifth wheel - someone or something that is unwanted and unneededfifth wheel - someone or something that is unwanted and unneeded
redundance, redundancy - the attribute of being superfluous and unneeded; "the use of industrial robots created redundancy among workers"
2.fifth wheel - an extra car wheel and tire for a four-wheel vehicle
car wheel - a wheel that has a tire and rim and hubcap; used to propel the car
3.fifth wheel - a steering bearing that enables the front axle of a horse-drawn wagon to rotate
bearing - a rotating support placed between moving parts to allow them to move easily
Translations
aðskotadýr
References in periodicals archive ?
The visit is part of an ongoing partnership between The Fifth Wheel Company and the University, where the company and students work to develop new lighting fixtures to enhance the current products.
The project was part of an ongoing partnership between The Fifth Wheel Company and Bangor University, where the company had tasked students in developing new fixtures and fittings to enhance its products and also offer student placements throughout the year.
We recognized that we needed to simplify and streamline Brookstone into one product offering and have accordingly re-positioned, re-designed and re-defined it with the Brookstone '50th Anniversary Edition' which replaces all prior Brookstone products," states Fred Hershberger, General Manager of Coachmen RV's fifth wheel division.
Made from cast steel, the FW17, is a lightweight fifth wheel designed as a durable, yet weight-reduced choice for on-highway fleets.
This year's challenge was set by Denbighshire-based Fifth Wheel Company, a leader in the design and manufacture of bespoke luxury caravans.
Graduate gets job after successful placement THE Fifth Wheel Company, based in Rhuallt in Denbighshire have employed Bangor University graduate Owen Roberts following an impressive placement during his time as a student.
com)-- Innovation Direct[TM], a leader in the invention assistance field since 1997, recently facilitated the process of the filing of a provisional application for a patent for Utah resident and inventor Gregory Rose on his Fifth Wheel Genie invention upon his request.
Vehicle Payload Maximum Towed Load Truck, Cargo, M1083A1 10,000 lbs 21,000 lbs Truck, Cargo, M1083A1P2 10,000 lbs 21,000 lbs Truck, Cargo w/MHC, M1084A1 10,000 lbs 21,000 lbs Truck, Cargo, Long 10,000 lbs 21,000 lbs Wheelbase, M1085A1 Truck, Cargo, Long 10,000 lbs 21,000 lbs Wheelbase, M1085A1P2 Truck, Cargo, Long 10,000 lbs 21,000 lbs Wheelbase w/MHC, M1086A1 Truck, Cargo, Long 10,000 lbs 21,000 lbs Wheelbase w/MHC, M1086A1P2 Truck, Expansible Van, 10,000 lbs 21,000 lbs M1087A1 Truck, Expansible Van, Not Applicable 21,000 lbs M1087A1P2 Truck, Tractor, M1088A1 Not Applicable 21,000 lbs on pintle hook 60,710 lbs on fifth wheel Truck, Tractor, M1088A1P2 Not Applicable 21,000 lbs on pintle hook 63,000 lbs on fifth wheel
Auto Business News-February 8, 2011--Volvo Trucks North America to provide new fifth wheel option(C)1994-2011 ENPublishing - http://www.
Built standard on a fifth wheel frame with a tri-axle design for quick set up and increased portability