US 4,708,277 A · Stitching head

Abstract

A stitching head includes a crank rotatable about a longitudinal axis through an oscillatory displacement in each of the opposite drive and return directions of a cycle. The crank has a plurality of crank pins displaced radially from the longitudinal axis of the crank. A pivotally mounted staple supporter receives and supports an elongated piece of wire. A reciprocably mounted staple former cooperates with the staple supporter to form the piece of wire into a staple. A reciprocably mounted staple driver cooperates with the staple supporter and former to drive the staple into a product. A plurality of links couple the crank pins with the staple supporter, former and driver. The links cause independent but coordinated movement of the supporter, former and driver to form and drive the staple into the product. The crank pins are disposed at a plurality of separate locations on the crank radially displaced at different distances from the longitudinal axis of the crank.

Claims32

Dependent claims

A stitching head comprising:

a crank rotatable about an axis through a predetermined oscillatory displacement;
first movable means for receiving and supporting an elongated piece of wire;
second movable means cooperable with said first movable means for forming the piece of wire into a staple;
third movable means cooperable with said first and second movable means for guiding and driving the staple into a product;
and
motion transmitting means separately coupling said crank with said first, second and third movable means for causing independent and coordinated movement thereof in response to crank rotation to form the piece of wire into the staple and drive the staple into the product.

3 more elements

Dependencies are inferred from the claim text.

Stitching head

Life of this patent

Stitching head

Life of this patent

Abstract

Claims32