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US 4,309,000 AGranted
Doffer mechanisms
AssigneeRieter Machine Works, Ltd.
InventorsKurt Schefer, Peter Flueckiger
Life of this patent
Estimating the term…
Abstract
The doffing system employs a doffing carriage which is reciprocable along rails to receive and carry bobbin packages away from the chucks of a winder. The carriage is constructed with a parallelogram linkage so as to have an upper frame portion raised and lowered while remaining horizontal in order to carry a bobbin package.
Claims7
A winding machine comprising
- at least one chuck;
- a doffing carriage for doffing at least one filament package from said chuck;
- first moving means for moving said carriage between a retracted position beneath said chuck and an extended position spaced from said chuck;
- a package-receiving member on said doffing carriage;
- second moving means for raising and lowering said package-receiving member;
- first sensor means for sensing contact of said member with a package on said chuck;
- and
- second sensor means for sensing movement of said carriage into said extended position;
- said first and second sensor means being operatively connected to said first and second moving means whereby said first sensor means de-activates said second moving means to cease raising said member in response to said member contacting a package with said carriage in said retracted position and then activates said first moving means to move said carriage towards said extended position and with said receiving member maintained by said second moving means in contact with said package, and said second sensor means re-activates said second moving means to raise said member in response to said carriage reaching said extended position.
6 more elements
Dependencies are inferred from the claim text.