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2. Chimney liner - Wikipedia

   en.wikipedia.org/wiki/Chimney_liner

   If the chimney already has a stainless-steel chimney liner but the liner is fitted the wrong way up, it needs to be turned around otherwise the chimney can leak tar and condensation. [1] A flexible flue liner prevents a carbon monoxide leak, chimney fire, or creosote buildup. The creosote build-up is the fuel inside the flue that causes the ...

3. Janney coupler - Wikipedia

   en.wikipedia.org/wiki/Janney_coupler

   The diagram from Beard's 1897 coupler patent [7]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [8] [9] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [7] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...

4. Quick coupler - Wikipedia

   en.wikipedia.org/wiki/Quick_coupler

   The market for quick couplers is mainly supplied by a large number of small and medium-sized enterprises. Many of the manufacturers of quick couplers are small, flexible and innovative, leading to the wide variation in design concepts. Many Original Equipment Manufacturers (OEMs) of construction equipment market a range of quick couplers.

5. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   A union also connects two pipes but is quite different from a coupling, as it allows future disconnection of the pipes for maintenance. In contrast to a coupling requiring solvent welding, soldering, or rotation (for threaded couplings), a union allows easy connection and disconnection multiple times if needed. It consists of three parts: a nut ...

6. Tightlock coupling - Wikipedia

   en.wikipedia.org/wiki/Tightlock_coupling

   Like all Janney couplers, the Tightlock is "semi-automatic". The couplers automatically lock when cars are pushed together, but workers must go between cars to hook up the air lines for the pneumatic brakes and connect cables for head-end power and other communications. To separate cars, a worker must use a lever to move the locking pin that ...

7. Coupling - Wikipedia

   en.wikipedia.org/wiki/Coupling

   A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other. This design utilizes a single piece of material and becomes flexible by removal of material along a spiral path ...