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.

Abstract: A chassisless tape apparatus includes a housing on which the operative components of the tape transport are mounted and which includes protective ridges extending outwardly therefrom to protect the external operation mechanism recessed within the ridges. A slide assembly mounted to the housing and on which the play back head is mounted serves to advance the drive mechanism between play back and rewind positions as well as actuate an electrical switch for activating the electrical circuits thereby providing single slide control of the tape apparatus.

Abstract: A pinch roller cooperating with the drive capstan of a tape playback apparatus includes a spool on which there is mounted a resilient tire member to selectively engage the capstan with a magnetic tape held between the tire and the capstan when in a driving position. The tire includes a circumferentially extending recess formed therein having a crowned surface for self-centering of the tape thereon, and a pair of annular shoulders spanning opposite sides of said recess for positively engaging the capstan on opposite sides of the tape thereby transmitting drive forces from the capstan to the side of the tape opposite the capstan through the tire. The spool includes slots communicating with the inner surfaces of the tire permitting a bonding agent to securely bond the tire to the spool.

Abstract: A manually operated tape playback apparatus includes a drive shaft which is manually rotated and means coupling the drive shaft to a self-contained generator for supplying power to an electrical amplifier coupled to a tape pickup head and including a speaker for reproduction of information recorded on the tape. The rotor of the generator is also coupled to a flywheel in turn coupled to a tape capstan for controlling the tape playback speed. The pickup head is mounted to a control arm movable between playback and rewind positions which arm is coupled to forward and reverse spindle drive means and to the drive shaft for controlling the movement of tape between reels and across the pickup head during playback and at an increased speed for rewinding the tape.