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ce or contrivance which serves to couple or connect adjacent parts or objects; as, a belt coupling, which connects the ends of a belt; a car coupling, which connects the cars in a train; a shaft coupling, which connects the ends of shafts. Box coupling, Chain coupling. See under Box, Chain. -- Coupling box, a coupling…

The act of coupling, or the state of being coupled; union. [R.] Caxton.

isengage parts of the machinery. Bayonet clutch. See Clutch. -- Bayonet joint, a form of coupling similar to that by which a bayonet is fixed on the barrel of a musket. Knight.

A short sled, mostly used as one of a pair connected by a reach or coupling; also, the compound sled so formed. [U. S.] The long wagon body set on bobsleds. W. D. Howells.

The portion of a half-coupling fastened to the end of a hose.

The cap or coupling of a flail, through which the thongs pass which connect the handle and swingel. Wright.

A floating perforated box for living fish. [U. S.] Car coupling, or Car coupler, a shackle or other device for connecting the cars in a railway train. [U. S.] -- Dummy car (Railroad), a car containing its own steam power or locomotive. -- Freight car (Railrood), a car for the transportation of merchandise or other goo…

n end view like links of a chain. When perfect, the calicles show twelve septa. -- Chain coupling. (a) A shackle for uniting lengths of chain, or connecting a chain with an object. (b) (Railroad) Supplementary coupling together of cars with a chain. -- Chain gang, a gang of convicts chained together. -- Chain hook (…

A device which is used for coupling shafting, etc., so as to transmit motion, and which may be disengaged at pleasure.

The act of coupling or joining; union; conjunction. Wit, you know, is the unexpected copulation of ideas. Johnson.

Union; combination; a coupling; a pair. [Obs.] Shak. And forth together rode, a goodly couplement. Spenser.

the variable itself, when these increments are made indefinitely small. -- Differential coupling, a form of slip coupling used in light machinery to regulate at pleasure the velocity of the connected shaft. -- Differential duties (Polit. Econ.), duties which are not imposed equally upon the same products imported fr…

A coupling pin. See under Coupling. [U. S.]

An openmouthed bar at the end of a car, which receives a coupling link and pin by which the car is drawn. It is usually provided with a spring to give elasticity to the connection between the cars of a train.

A coupling pin. See under Coupling.

Running. -- To throw in, or out of, gear (Mach.), to connect or disconnect (wheelwork or couplings, etc.); to put in, or out of, working relation.

h or spanner, having a hook at the end, instead of a jaw, for turning a bolthead, nut, or coupling.

y of men appointed to bring and manage hose in the extinguishing of fires. [U.S.] -- Hose coupling, coupling with interlocking parts for uniting hose, end to end. -- Hose wrench, a spanner for turning hose couplings, to unite or disconnect them.

-- Joint chair (Railroad), the chair that supports the ends of abutting rails. -- Joint coupling, a universal joint for coupling shafting. See under Universal. -- Joint hinge, a hinge having long leaves; a strap hinge. -- Joint splice, a reënforce at a joint, to sustain the parts in their true relation. -- Joint s…

A bar, pin or wedge, to secure a crank, pulley, coupling, etc., upon a shaft, and prevent relative turning; sometimes holding by friction alone, but more frequently by its resistance to shearing, being usually embedded partly in the shaft and partly in the crank, pulley, etc.