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Hook-and-loop fastener, invented by de Mestral. Swiss electrical engineer George de Mestral who studied at EPFL invented his first touch fastener when, in 1941, he went for a walk in the Alps, and wondered why burdock seeds clung to his woolen socks and coat, and also his dog Milka. [2] [6] He discovered it could be turned into something useful ...
Hook-and-loop fasteners, commonly known as Velcro (a genericized trademark), hook-and-pile fasteners or touch fasteners are versatile fastening devices that allow two surfaces to be repeatedly attached and detached with ease. Invented in the mid-20th century, they are widely used in clothing, accessories, and various industrial and consumer ...
The hook and eye closure has a long history and is still used today, primarily on bras. This form of fastening first appears under the name of "crochet and loop" in 14th-century England. [1] The first reference to the modern term appears in Aubrey's Brief Lives in 1697, which describes a doublet and breeches being attached with "hook and eies". [2]
The most reliable common variation uses a fixed loop, such as an alpine butterfly loop, artillery loop, figure-eight loop or directional figure-eight loop, or another of many suitable loop knots. [ 4 ] [ 15 ] If a fixed loop is used repeatedly for tying the trucker's hitch in the same portion of rope, excessive wear or other damage may be ...
The bell-and-hook coupling system was first introduced in the Cape of Good Hope in 1902, when two CGR Type A 2-6-4T locomotives were acquired as construction engines on the new 2 ft (610 mm) narrow gauge Avontuur Railway which was being constructed out of Port Elizabeth through the Langkloof. In South Africa, these couplers were used on only ...
The hook latch covers the opening in the hook head, effectively securing the lift bar inside the hook head during transport and dump. It is designed to augment the rear lock system during transit; Some systems utilize proximity switches to indicate to the operator which part of the lift/dump cycle is current, or whether there is a fault in the ...
The semi-trailer increased the capacity of trucks, but it was the fifth wheel that brought the flexibility for drivers to keep moving while receivers unloaded the loads they just delivered. The Fruehauf Trailer Corporation helped to make the Martin Rocking 5th Wheel a success by installing them on their popular new semi-trailer design.
A bolt snap is a type of snap hook with a manually operated bolt action slide gate of medium security used to clip a light load to a ring, eye, loop or bight to temporarily secure or suspend an object. They are used for a wide variety of applications including dog leads and for clipping scuba equipment to the diving harness.