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Belts ends are joined by lacing the ends together with leather thonging (the oldest of the methods), [6] [7] steel comb fasteners and/or lacing, [8] or by gluing or welding (in the case of polyurethane or polyester). Flat belts were traditionally jointed, and still usually are, but they can also be made with endless construction.
Flat belts on flat pulleys or drums were the most common method during the 19th and early 20th centuries. The belts were generally tanned leather or cotton duck impregnated with rubber. Leather belts were fastened in loops with rawhide or wire lacing, lap joints and glue, or one of several types of steel fasteners.
Early in the 1920s chrome leather upright belts were being made and consisted of many riveted leather belts placed upright. At the beginning of the 1940s, a patent was registered under the Extremultus brand for a multi-layer flat belt made of nylon and chrome leather. The over 98% energy efficiency offered was a vast increase compared with ...
The Armenian Areni-1 shoe, which has been dated to around 3500 BC, is a simple leather shoe with leather "shoelaces" passing through slotted "eyelets" cut into the hide. The more complex shoes worn by Ötzi the Iceman , who lived around 3300 BC, were bound with "shoelaces" made of lime bark string.
Toothed belts are used widely in mechanical devices, including sewing machines, photocopiers and many others. A major use of toothed belts is as the timing belt used to drive the camshafts within an automobile or motorcycle engine. As toothed belts can deliver more power than a friction-drive belt, they are used for high-power transmissions.
This produces a flat, 3-strand braid. A braiding machine is a device that interlaces three or more strands of yarn or wire to create a variety of materials, including rope, reinforced hose, covered power cords, and some types of lace. [1] [2] Braiding materials include natural and synthetic yarns, metal wires, leather tapes, and others.
The portable shot blasting unit is primarily used to flatten deformed press belts and prepare the belt material for reuse. The unit is designed for field use and is portable. All necessary equipment (excluding the carriage frame and air compressor) fits into a box with dimensions of approximately 350 × 350 × 320 mm.
It is usually performed on the "flesh" side of a piece of leather rather than the "finished" (hair) side. [1] Skiving is also used when two edges of leather are to be joined, so as to keep the overlapping area from becoming unnecessarily bulky. [2] The technique is useful for joining long strips of leather together to form belts or watchbands.
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