Signode Corporation

Clement A Urban

Gale W Huson

A strap chute is provided for an automatic strapping machine and comprises a plurality of sections adapted to be assembled together with the machine to form a loop-like strap guide path around an article to be strapped. Each section comprises a mounting frame having a pair of opposed fulcrum members, a pair of strap guides each having at least an outer retaining wall for guiding and retaining the strap when the strap guides are located in a closed position, and a biasing means for biasing the strap guides into the closed position. Each strap guide includes a lever member disposed adjacent one of the fulcrum members of the frame to accommodate pivoting movement of the strap guide between the closed position and an open position. The biasing means is disposed between the lever members of the strap guides for biasing each strap guide lever member against one of the fulcrum members and for pivoting the lever members so as to normally maintain the strap guides in the closed position.

Strap chute for automatic strapping machine

A strap seal joint and method for applying a seal to the overlapping ends of a strap about a bale of resilient material are disclosed. The bale is initially restrained against expansion in a press. The strap is provided with two oppositely facing major side surfaces having predetermined frictional characteristics. The strap is looped around the bale to overlap inner and outer and end portions of the strap. The seal is applied to the overlapping end portions of the strap. The seal and one of the strap end portions are in an interlocking engagement sufficient to prevent withdrawal of the strap end portion from the closed seal. The seal is also crimped against the other strap end protion with a predetermined degree of frictional force engagement which is sufficiently great, in combination with other frictional forces acting on the strap, to at least initially restrain the strap other end portion relative to the seal at least until the press is opened but which is sufficiently low to permit relative movement between the overlapping strap end portions when the tension force on the strap exceeds a predetermined tension force.

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Willow Springs, IL, United States of America

Clement A Urban