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First of all, a threaded bar is inherently weaker than a solid bar of the same diameter. Then there is the issue of the welds not holding. When a boat swings on a well-embedded anchor, this can cause strong lateral loads on the swivel, causing its jaws to be pried open - thus disconnecting the chain from the swivel. Hence the above advice from ...
An EZ curl bar. Originally known as a Dymeck curling bar after its inventor Lewis G. Dymeck (US Patent Number 2,508,567), the EZ ("easy") curl bar is a variant of the barbell that is often used for biceps curls, upright rows, and lying triceps extensions. The curved profile of the bar in the grip region allows the user's wrists and forearms to ...
A swivel gun (or simply swivel) [1] is a small cannon mounted on a swiveling stand or fork which allows a very wide arc of movement. Another type of firearm referred to as a swivel gun was an early flintlock combination gun with two barrels that rotated along their axes to allow the shooter to switch between either the rifled or the smoothbore ...
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A swivel, swivelling, spinny, or revolving chair is a chair with a single central leg that allows the seat to rotate 360 degrees to the left or right. A concept of a rotating chair with swivel castors was illustrated by the Nuremberg noble Martin Löffelholz von Kolberg in his 1505 technological illuminated manuscript , the so-called Codex ...
The swivel works well, and the slipcover look covers the mechanism. The chair is great for reading or family gatherings. My husband and I are under under 5-foot-9, and we both find it comfortable.
Lying high cable curl: Lie prone on a bench that is under a cable machine with pulley at the highest level. Grasp a bar that is attached to the pulley with a shoulder-width grip, and fully extend to elbows. Keep the upper arms fixed and curl the bar towards the forehead until the elbow is fully flexed. Then return the bar to starting position ...
A Swivel is a mechanical device used on a drilling rig that hangs directly under the traveling block and directly above the kelly drive, that provides the ability for the kelly (and subsequently the drill string) to rotate while allowing the traveling block to remain in a stationary rotational position (yet allow vertical movement up and down the derrick) while simultaneously allowing the ...