Nuovo Pignone Spa

Nuovopignone-industrie Meccaniche E Fonderia S.p.a.

Francesco Grifoni

Costantino Vinciguerra

Sergio Palomba

Marco De Iaco

Massimo Altamore

Alessio Anichini

Massimo Coppini

Andrea Masala

Massimiliano Boni

A dobby lever which is insertable into a main lever of a textile loom includes a sliding nut to set and adjust its position along the main lever. The dobby lever has a pair of parallel flat sides, separate but fixed to each other. The sliding nut has a body which can be inserted between the sides of the main lever. The body of the sliding nut has a hole at one end for receiving a joint which can be connected to a driving bar and a blocking device at its other end for the sides of the main lever. The body at the other end has sloping surfaces, and wedge-shaped elements are provided having complimentary slanting surfaces which are insertable into a box-shaped container and act upon the sides of the main lever. A screw element is insertable into the box as a blocking device to adjust the position of the wedge-shaped elements with respect to the sloping surfaces of the body and the sides of the main lever, and a connecting element freely joins and holds the wedge-shaped elements together relative to the sloping surfaces of the body of the sliding nut.

Sliding nut for a dobby lever

A high-speed rotary dobby key mover mechanism having a main crank arm in which two keying levers that have the same arm ratio are mounted for pivotal movement on a cam in opposing positions. The adjacent ends of the keying levers cooperate with a key, while the free other ends of the key levers, which are diametrically opposite about and at the same distance from the axis of the dobby drive shaft for the dobby cooperate alternately with a single control device which is located on only one side of the main crank arm. The control device is regulated, moreover, by a logic unit.

Keying lever arrangement in a high-speed rotary dobby

Growing community of inventors

Vicchio, Italy

Francesco Grifoni