CONTACT FEATURES ON CONTENT LISTS OF CONTRACTORS AT THE FRONT PLACES OF THE BUILDING GROUPS OF SEPARATE GROUPS

摘要

The spring-contact is formed of a succession of identical elements (F) each having a top region (H) with a descending leaf spring (FB) and two catches (RK1, RK2) which are splayed in the same direction on either side of it. A retaining board (HB) descends from the opposite edge of the top region, down the back of the moulding on to which the spring is fitted. A slot (FS) extends along the centre of each leaf spring from its root (K) as far as the first bend. A horizontal retaining blade (RB) projects inwards from the centre of the board to secure the spring against thrusting, bending and frictional forces.