Tentering chain with a continuously adjustable chain pitch for t

Details Tentering chain with a continuously adjustable chain pitch for t Tentering chain with a continuously adjustable chain pitch for t

1990-11-14

1992-02-04

Schroeder, Werner H.

Textiles: cloth finishing

Expanding device for textile webs

Biaxial expansion

26 89, 26 93, D06C 302

Patent

active

050849492

ABSTRACT:
A tentering chain has a continuously adjustable chain pitch for the simultaneous biaxial treatment of film webs. Tenter bodies conventionally equipped with clamps or hooks for gripping an edge of the film web are carried by the tentering chain. Guide rails operate the tenter clamps. Neighboring tenter bodies are interconnected by chain links. Each chain link is connected by a hinging connection at each end to the respective tenter body. At least one of the two hinging connections of a chain link is adjustable by a hinging bolt having an eccentric section or sections and a circular section or sections. The adjustable eccentric hinging bolts are mounted for rotation in the tenter bodies and the eccentric section engages the respective end of the chain link. For this purpose the chain link has a bore in which the eccentric section is received. However, the eccentric sections could also be mounted in side walls of the tenter body while the circular section is received in a through bore of the respective chain link.

REFERENCES:
patent: 2728941 (1956-01-01), Alles et al.
patent: 3611479 (1971-10-01), Wicksall
patent: 3765067 (1973-10-01), Fisher
patent: 3916491 (1975-11-01), Kampf
patent: 4614011 (1986-09-01), Nicholas et al.
patent: 4882820 (1989-11-01), MacKinnon et al.
patent: 4890365 (1990-01-01), Langer

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