Abstract: A wire harness-making apparatus includes a wire supply, a wire feeding unit for feeding and measuring harness wires from the wire supply, a wire transport unit for transporting the harness wires, and two connector crimping units positioned on the opposite sides of the harness wire set. The wire transport unit includes first and second wire clamps movable from opposite sides of the harness wires. The first and second wire clamps are driven along an associated top and bottom guides on opposite sides of the harness wire set. These clamps may he operated into and out of contact from vertical directions so as not to interfere with the feeding of wires by the wire feed unit.

Abstract: The invention provides a spindle motor for magnetic disk devices capable of coping with small magnetic disks, in which the leaking magnetic flux in the motor section does not adversely affect the magnetic head. The spindle motor consists of a stator, a magnetic disk mounting hub axially supported on a frame of the stator, a bowl-like rotor yoke protruding from the base of the hub in the radial direction and covering the top and circumference of the stator, and a rotor magnet fitted over the inner circumference of the rotor yoke in a position opposite to the magnetic pole of the stator. A clearance space comprising is provided between a mounting seat of the magnetic disk and the top of the rotor yoke. The outer diameter of the hub base is also smaller than the information-recording region of the magnetic disk, and the rotor yoke is fitted as a magnetic body on the hub, which is made from the same material as the substrate of the magnetic disk.

Abstract: A method of producing a modified polypropylene comprising the step of graft-polymerizing a propylene random copolymer containing an unconjugated diene comonomer represented by the general formula: ##STR1## wherein R.sub.1 -R.sub.4 are H or an alkyl group having 1-6 carbon atoms, and n is an integer of 1-20, with a monomer having an unsaturated bond by a radical method.

Abstract: A spindle motor for rotating magneto-optical discs that are attracted and held on a fixed position at an end of a motor driven shaft by means of a clamping rotor with internal field magnets. The spindle motor has a set of stator coils and a set of field magnets held internally mounted on the shaft side of the clamping rotor. The field magnet and stator coil sets are arranged at a regular interval in a ring around the circumference of the clamping rotor and of a shield member of the spindle motor respectively, leaving a thin gap between the stator coils and the field magnets. The saucer-like clamping rotor is made of a non-magnetic material and applied at the disc side, on which side a magneto-optical disc is charged, of the rotary shaft. The field magnets, being fitted on the face of the clamping rotor opposed to the magneto-optical disc mounted face, function both as a means for driving the clamping rotor for motor operation, and as a disc-attracting device.