초록 ▼

A propelling head for the pneumatic propelling of a multifilament tow, e.g., for use in the filling of textile or network bags, hoses, sacks, or bed cover channels for padding or insulating purposes, has a rear end through which the tow enters and a front end through which the tow is propelled by me

A propelling head for the pneumatic propelling of a multifilament tow, e.g., for use in the filling of textile or network bags, hoses, sacks, or bed cover channels for padding or insulating purposes, has a rear end through which the tow enters and a front end through which the tow is propelled by means of air injected into the head in such a manner as to produce a flow of air directed towards and out of the front end. Behind the zone of injection of air the head is closed with the exception of a tow engaging hole which fits closely around the tow entering the head to prevent or reduce the escape of air through the rear end of the head.

대표청구항 ▼

A propelling head for the pneumatic propelling of a multifilament tow, comprising a housing constructed with a venturi portion having a rear tow entrance end, a front tow exit end, a centrally arranged through passage for the tow, said through passage extending centrally from said rear tow entrance

A propelling head for the pneumatic propelling of a multifilament tow, comprising a housing constructed with a venturi portion having a rear tow entrance end, a front tow exit end, a centrally arranged through passage for the tow, said through passage extending centrally from said rear tow entrance end to said front tow exit end, and annular chamber surrounding said through passage, said annular chamber having at least one compressed air inlet port, said annular chamber communicating with said through passage through an annular slot formed between the inner wall of said annular chamber and the outer wall of said through passage and forming said venturi portion, a member with a tow engaging hole being provided in the rear portion of said through passage to establish a closure between the tow entering the through passage and the inner wall of that passage, characterized in that the inner wall of said annular slot is substantially cylindrical, and longitudinal guiding ribs are provided in said annular slot for guiding the flow of air through said slot into said through passage.