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US 4,899,530 AGranted
Doffing and donning apparatus
AssigneeJames Mackie & Sons Limited
InventorWilliam A. Morrison
Life of this patent
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AssigneeJames Mackie & Sons Limited
InventorWilliam A. Morrison
Estimating the term…
A yarn spinning, twisting or doubling machine having bobbin doffing and donning apparatus for the spindles of the machine, the apparatus comprising bobbin conveying means extending along and above a row of spindles, a series of bobbin grippers spaced at the same pitch as the spindles, each gripper being mounted for vertical movement between its respective spindle and the conveyor, each gripper being designed to hold or grip a bobbin at a point beyond one end of a package wound on the bobbin so that the grippers can lift the wound bobbin from its spindle for engagement by means on the conveyor and then release the bobbin for subsequent removal, or grip an empty bobbin on the conveyor and move it to its respective spindle and control means operable to move the conveyor after it has received the full doffed bobbins and to bring empty bobbins into line with the spindles so that the grippers can place empty bobbins on the spindles. This equipment enables the bobbins to be accurately positioned on the spindles and removed from the spindles without the problems which arise from the use of inflatable sleeves.
A yarn spinning, twisting or doubling machine comprising bobbin doffing and donning apparatus for the spindles of the machine, the apparatus comprising bobbin conveying means extending along and above a row of spindles in the same vertical plane as said spindles, a series of bobbin grippers corresponding to said row of spindles spaced at the same pitch as the spindles and disposed in the same vertical plane as said conveying means and said spindles, each gripper being mounted for vertical movement between its corresponding spindle and the conveyor, each gripper being designed to hold or grip a bobbin at a point beyond one end of a package wound on the bobbin so that the grippers can lift the wound bobbin from its spindle for engagement by means on the conveyor and then release the bobbin for subsequent removal, or grip an empty bobbin on the conveyor and move it to its respective spindle and control means operable to move the conveyor after it has received the full doffed bobbins and to bring empty bobbins into line with the spindles so that the grippers can place empty bobbins on the spindles.
Dependencies are inferred from the claim text.