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2. Flatbed trolley - Wikipedia

   en.wikipedia.org/wiki/Flatbed_trolley

   A piano trolley or piano dolly is a two- or four-wheeled trolley featuring a stronger-than-usual frame. [4] They are typically measuring approximately 50 to 80 cm ( 19 + 5 ⁄ 8 to 31 + 1 ⁄ 2 in) long and are used by removals companies for moving pianos.

3. Hand truck - Wikipedia

   en.wikipedia.org/wiki/Hand_truck

   A hand truck. A hand truck, also known as a hand trolley, dolly, stack truck, trundler, box cart, sack barrow, cart, sack truck, two wheeler, or bag barrow, is an L-shaped box-moving handcart with handles at one end, wheels at the base, with a small ledge to set objects on, flat against the floor when the hand truck is upright. [1]

4. Come-along - Wikipedia

   en.wikipedia.org/wiki/Come-along

   A similar heavy-duty unit with a combination chain and cable became available in 1935 that was used by railroads, but lacked the success of the cable-only type units. [ 1 ] A similar tool to a come-along is a cable puller , which does not have a drum and ratchet but directly grips the cable, allowing unlimited lengths of wire rope to be used.

5. Tow hitch - Wikipedia

   en.wikipedia.org/wiki/Tow_hitch

   Trailer hitch receiver tubes may be bolted, welded, or integral to the vehicle chassis, and come in various sizes depending on the load they are designed to carry and the country of operation. The US standards are: Class I and II: 1 + 1 ⁄ 4 in (31.8 mm) light or medium duty [4] receiver tube; Class III and IV: 2 in (50.8 mm) heavy duty [4 ...

6. Dolly (trailer) - Wikipedia

   en.wikipedia.org/wiki/Dolly_(trailer)

   An A-dolly has a single drawbar with a centred coupling. A C-dolly has two separate couplings side-by-side. Low loader dolly, equipped with a gooseneck type drawbar that attaches to the fifth wheel coupling on the rear of a prime mover to distribute the mass on the fifth wheel on the dolly between the prime mover and the wheels of the dolly ...

7. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin , a 2-or- 3 + 1 ⁄ 2 -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a ...