Armature manufacture at Hutchinson & Dibley has been a mainstay of the business for many years

using traditional techniques.

Stage 1.

The Armature shaft, laminations, and commutator are gathered from stock.

Stage 2.

Using a variety of presses, the parts are assembled into the form shown.

Stage 3.

At this stage the windings are created around the lamination stack.

Stage 4.

The separate coils are terminated on the commutator in strict rotation.

Stage 5.

The Armature is then dressed with fibreglass insulation and tested for continuity and Insulation resistance.

Stage 6.

Impregnation of the windings are carried out by initially placing the armature in a Vacuum

chamber and submitting it to 30 inches of Vacuum, at this point varnish is admitted, the

chamber is then pressurised 3 bar. This ensures that there are no air locks in the windings.

Stage 7.

The completed Armature is diamond machined to close tolerances and subjected to a final test.