Low noise and high efficiency doffing gun

Details Low noise and high efficiency doffing gun Low noise and high efficiency doffing gun

1986-09-15

1987-05-26

Petrakes, John

Advancing material of indeterminate length

By fluid current

And web storage

28271, 57 22, 57305, 226 7, 226 95, B65H 5116, B65H 5400

Patent

active

046678646

ABSTRACT:
A doffing gun for aspirating yarn includes a vacuum chamber tube threadably connected to an ejector handle body formed with a first bore axially aligned with the vacuum chamber and a second bore substantially perpendicular to the first bore. The first bore includes a mixing chamber into which air under pressure is admitted through the second bore and a third bore which extends between the first and second bores. The third bore is oriented so that it enters the mixing chamber at an angle of about 15.degree. to 30.degree. from the longitudinal axis of the vacuum chamber tube and axially aligned first bore. Attached to the outlet or exhaust end of the ejector handle is a noise reduction means which, in turn, is connected to a diffusing nozzle and collection bag. The collection bag comprises upper and lower sections of tightly woven and open mesh materials, respectively.

REFERENCES:
patent: 3144187 (1964-08-01), Naumann
patent: 3241234 (1966-03-01), Kiefer et al.
patent: 3424359 (1969-01-01), Houle et al.
patent: 3678579 (1972-07-01), Slavik
patent: 3679114 (1972-07-01), Ostertag et al.
patent: 3690530 (1972-04-01), Porter
patent: 4024698 (1977-05-01), Weiss et al.
patent: 4030651 (1977-06-01), Weiss et al.
patent: 4110876 (1978-09-01), Weiss et al.
patent: 4114790 (1978-09-01), Sighieri et al.

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