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2. Inglefield clip - Wikipedia

   en.wikipedia.org/wiki/Inglefield_clip

   Inglefield clips, from a Royal Navy handbook of 1943 Two brass Inglefield clips connected (a standard clip on the left and a swivel clip on the right).. The Inglefield clip (also known as a sister clip [1] and a Brummel hook [2]) is a clip for joining a flag or ensign quickly, easily and securely to flag halyards so that the flag can be hoisted. [3]

3. Flagpole - Wikipedia

   en.wikipedia.org/wiki/Flagpole

   A flagpole, flagmast, flagstaff, or staff is a pole designed to support a flag. If it is taller than can be easily reached to raise the flag, a cord is used, looping around a pulley at the top of the pole with the ends tied at the bottom. The flag is fixed to one lower end of the cord, and is then raised by pulling on the other end.

4. Swivel - Wikipedia

   en.wikipedia.org/wiki/Swivel

   A swivel is a connection that allows the connected object, such as a gun, chair, swivel caster, or an anchor rode to rotate horizontally or vertically. Swivel designs

5. Differential pulley - Wikipedia

   en.wikipedia.org/wiki/Differential_pulley

   The differential pulley was invented in 1854 by Thomas Aldridge Weston from King's Norton, England. [2] The pulleys were manufactured in collaboration with Richard and George Tangye. According to Richard Tangye's autobiography, the Weston differential pulley evolved from the Chinese windlass, with an endless chain replacing the finite length of ...

6. Pulley - Wikipedia

   en.wikipedia.org/wiki/Pulley

   A pulley may have a groove or grooves between flanges around its circumference to locate the cable or belt. The drive element of a pulley system can be a rope, cable, belt, or chain. The earliest evidence of pulleys dates back to Ancient Egypt in the Twelfth Dynasty (1991–1802 BC) [1] and Mesopotamia in the early 2nd millennium BC. [2]

7. Block and tackle - Wikipedia

   en.wikipedia.org/wiki/Block_and_tackle

   A block and tackle [1] [2] or only tackle [3] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load.