Abstract: A variable power input wire coiler for coiling wire of different diameters, singly, in tandem, or in triple form, there being interchangeable drive gears to the coiling rolls astraddle the mandrel, such gears being disconnectable from flexible drive shafts and replaceable with different diameter drive gears.

Abstract: A wire coiling machine for pattern forming resistance wire coils with controlled spacing of the turns, one of the two forming rolls being axially shiftable relative to the other by an actuator motor, the coiling rolls each having a surface configuration specially grooved to retain the coiling wire during axial shifting of the roll, but still allowing escape of the wire as it is formed into a coil.

Abstract: A wire coiling machine of simplified construction, direct one-to-one synchronized drive from a rear drive arbor through a pair of friction drive rolls astraddle it, to a pair of flexible drive shafts connecting the drive rolls to a pair of front forming rolls of essentially the same diameter as the friction drive rolls, the forming rolls being astraddle the front forming arbor; the drive arbor having a diameter essentially the same as the outer diameter of a coil being formed on the forming arbor, and the forming arbor having a diameter essentially the same as the internal diameter of the coil being formed.

Abstract: Coiling machine with identical diameter arbors each end of spindle, contacted by a pair of identical diameter rings on each arbor, transmitting their picked up power to associated cushioned work rings with complete speed synchronism and unvarying coiling pressure on the wire.

Abstract: A wire coiling apparatus employing a pair of coiling rolls with rigid, usually steel, backup and drive ring members in direct driven engagement with the mandrel spindle, coupled to work rings which have controlled resilient transverse floating action under coil forming pressures, to rotate off center relative to the drive rings which drive them. In one embodiment, each work ring has a steel forming surface which is part of a metal outer ring member mounted on a resilient inner ring member. In another embodiment, each work ring is a resilient member which has a resilient forming surface.

Abstract: Wire coil cutoff apparatus for a wire coiling machine that forms an axially advancing, rotational, helical wire coil, the advancing coil being momentarily biased into indexing engagement with the cutter blade by pneumatic pressure, and the indexed blade then being shifted into cutoff relation with the coil while the pressure is still applied.