Title: Yarn singeing burner construction

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Claims: What is claimed is:

1. A yarn singeing burner, comprising a housing having a yarn passage therethrough and a wall having an entrance opening into said yarn passage, an insert member disposed in said yarn passage and having a portion spaced inwardly from said housing and defining a burner fuel and air chamber between said insert member and said housing, said insert member having a plurality of apertures for the passage of singeing flame jets therethrough, means for supplying fuel and air to said burner fuel and air chamber for ignition therein to generate singeing flame jets, and a yarn guiding channel extending through said yarn passage between the flame jets and the yarn and having an open side opening to the entrance for the passage of the yarn therethrough.

2. A yarn singeing burner, according to claim 1, wherein said yarn guiding channel includes spaced side walls which diverge outwardly to the entrance.

3. A yarn singeing burner, according to claim 1, wherein said yarn guiding channel includes first and second side walls which diverge outwardly to said entrance and which are perforated.

4. A yarn singeing burner, according to claim 1, wherein said yarn guiding channel comprises a central cylindrical portion with a side wall extending radially outwardly from each side of said cylindrical portion and opening to said entrance.

5. A yarn singeing burner, according to claim 4, wherein said central cylindrical portion is of wave-shape configuration.

6. A yarn singeing burner, according to claim 1, wherein said yarn guiding channel includes perforated walls.

7. A yarn singeing burner, according to claim 1, wherein said yarn guiding channel includes side wall portions having a plurality of openings therein spaced along the longitudinal axis.

8. A yarn singeing burner, according to claim 7, wherein the openings in respective side walls are offset.

9. A yarn singeing burner, according to claim 7, wherein the openings in the respective side walls are aligned.

Other info:

Inventors: Mettler, Hermann (Arth, CH)

Application Number: 537326
Filing Date: 1974-12-30
Publication_date: 1976-02-03
Assignee: Aktiengesellschaft Fr. Mettler's Sohne Maschinenfabrik (CH)
Primary Class(es): 28/239 432/59
Other Classes:
US Patent Ref:

3402447	Sep, 1968	Mehler	28/63.
3447214	Jun, 1969	Heimes	28/63.

Other Refs:
Primary Examiner: Dority, Jr., Carroll B.
Assistant Examiner:
Attorney: McGlew and Tuttle