Couplers differs from one model train to another depending on its manufacturer but within the scale there are often multiple coupler styles that you can change to depending on what you prefer.
couplers to connect 2 enging together for sale
same
yes - by heating them
A train made from gum is a Chew Chew train get it a CHEW CHEW train.
Porcine Associates specialize in the making of GPS and DG couplers. These "couple" (pair) your GPS and your autopilot functions. DG couplers only work with Naviad Devices.
http://www.ozoptics.com/ALLNEW_PDF/DTS0033.pdf
The First bullet train was made in 1930
The Janney coupler was named after Eli H. Janney who patented the invention in 1873. The Janney coupler was an improvement in railroad car couplers that became the standard for the railroad freightcar couplers.
Wide Variety of Couplers, Dividers Isolators & Circulators
Fiber optic couplers can be either active or passive devices. The difference between active and passive couplers is that a passive coupler redistributes the optical signal without optical-to-electrical conversion. Active couplers are electronic devices that split or combine the signal electrically and use fiber optic detectors and sources for input and output.
A putlog scaffold consists of a single row of standards with the inner edge of the platform as close to the wall as is practicable. The standards are connected by a ledger fixed with right angle couplers and the putlogs are fixed to the ledgers using putlog couplers.