Doffer with pneumatic control system

Details Doffer with pneumatic control system Doffer with pneumatic control system

1979-10-29

1981-08-11

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Doffing or donning

57271, D01H 910

Patent

active

RE0307025

ABSTRACT:
Apparatus movable along a spinning frame to doff full bobbins from the spindles thereof and to don empty bobbins onto such spindles. Low pressure pneumatic sensors are provided for emitting a stream of low pressure air into the path of movement of selected elements of the apparatus and generating a pneumatic signal each time a stream of low pressure air is interrupted by the movement of such elements, and a low pressure pneumatic control system receives the pneumatic signals and operates the selected elements of the apparatus in a predetermined sequence.

REFERENCES:
patent: 3394539 (1968-07-01), Morikawa et al.
patent: 3413794 (1968-12-01), Bell et al.
patent: 3442072 (1969-05-01), Gillono et al.
patent: 3472374 (1969-10-01), Ness et al.
patent: 3830049 (1974-08-01), Kieronski et al.
patent: 4102115 (1978-07-01), Hemala et al.

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