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US 4,199,929 AGranted
Device for pneumatically threading yarn for a double twist spindle
AssigneeVerdol S.A.
InventorPatrick Vessella
Life of this patent
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Abstract
A device for pneumatically threading yarn for a double twist spindle supporting at least one yarn brake, is characterized in that said device comprises a pneumatic system operative firstly to retract the normally applied yarn brake and then to achieve the automatic threading of the yarn through the shaft of the spindle, likewise in pneumatic manner.
Claims8
A device for pneumatically threading yarn through the axial bore of a hollow shaft supporting a double twist spindle mechanism, wherein the shaft has a normally applied yarn brake located in its bore, comprising:
- pneumatic retracting means connected to the yarn brake for retracting the brake and opening the bore;
- pneumatic head means operative to pass air through the bore to jet the yarn therethrough;
- and
- pneumatic distributing means connected with said retracting means and said head means and operative sequentially to first retract said yarn brake and thereafter to pass air through the bore of the shaft.
1 more element
Dependencies are inferred from the claim text.