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Clayton found Link-Belt was part of a more select group surviving the transition to hydraulics. After World War II, excavators moved from cable-actuated systems extending and lifting the bucket to hydraulic mechanisms, which were safer and simpler. Link-Belt was one of about 30 established cable-actuated excavator companies of the 1950s.
Through the turn of the century, Link-Belt expanded its line of steam-powered, heavy-duty coal-handling cranes. The company also expanded into lighter, more versatile rail-based cranes. 1906–1939: Link-Belt moves to Chicago, expands into excavation
Small cables may exit the tray through the ventilation openings, which may be either slots or holes punched in the bottom. A ladder tray has the cables supported by a traverse bar, similarly to the rungs of a ladder, at regular intervals on the order of 4 to 12 inches (100 to 300 mm).
IEC 60981 Extra heavy-duty electrical rigid steel conduits; ... Cable tray systems and cable ladder systems; IEC 61540 Electrical accessories – Portable residual ...
Each ladder certification is colour-coded to indicate the amount of weight the ladder is designed to hold, the certification class and its use. The color of the safety label specifies the class and use. Class 1 ladder – for heavy-duty industrial uses, maximum load of 175 kg. Colour-coded blue to identify.
A sailboat's mast is supported by shrouds (side-to-side) and stays (fore-and-aft) – nautical equivalents of guy wires.. A guy-wire, guy-line, guy-rope, down guy, or stay, also called simply a guy, is a tensioned cable designed to add stability to a freestanding structure.
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