Control of the linear speed of the web

Details Control of the linear speed of the web Control of the linear speed of the web

1975-07-08

1977-04-12

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 1706

Patent

active

040170365

ABSTRACT:
This invention is concerned with providing means which control the linear speed of a web travelling from a source of that web to a take-up spool and is particularly associated with ensuring that the linear speed of travel of the web from the one source to the take-up is maintained constant. The invention therefore has application to the textile trade where a web of textile material may be passed through a dye bath and it is desirable to ensure that all parts of the web are immersed in the dye bath for the same length of time.
The invention includes means for sensing the speed of travel of the web and comparing it against a known reference speed and by comparing the two speeds providing a positive or negative signal which is fed to apparatus which then increases or reduces the speed of travel of the web in order to maintain it constant.

REFERENCES:
patent: 2887280 (1959-05-01), Bowen
patent: 2929193 (1960-03-01), Cook
patent: 3516619 (1970-06-01), Azuma
patent: 3781490 (1973-12-01), Phillips

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