Abstract The labeling apparatus has a source of labels, a gripping turret with mechanical gripping elements that withdraw labels from the label source and fly the labels against the glue retaining surface of a gluing drum, en route to apply the labels to containers. The mechanical grippers are so arranged as to grip only the leading edges of the labels. There is a space between the glue drum and the gripper turret so that label portions trailing their gripped leading edges fly in said space in unsupported relation to the turret. Optional air jet nozzles may blow the flying label portions against the glue drum. The glue drum is provided directly with a doctor blade which spreads glue onto a uniform film on the drum. The drum is provided with recesses to receive the mechanical gripping elements below the glue drum surfaces as the gripping elements sweep past the drum.
Inventors
👤 H Kronseder
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 00:38
CPC Classifications
B; B65; B65C; B65C9/00; B65C9/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
In labeling apparatus having a gripping turret with mechanical gripping fingers projecting therefrom, a gluing drum having a doctor blade in direct contact with the gluing drum, recesses in said drum in alignment with the gripping fingers to receive said fingers below the drum surface as the gripping turret rotates past the drum, said gripping fingers gripping the leading edges of discrete pre-cut labels to leave trailing portions of the discrete pre-cut labels free to fly in unsupported relation as they are swept against the drum, and means to prevent glue contamination of said recesses.
Claim 2
Dependent Claim
95 words
In labeling apparatus having a gripping turret with mechanical gripping fingers projecting therefrom, a gluing drum having a doctor blade in direct contact with the gluing drum, recesses in said drum in alignment with the gripping fingers to receive said fingers below the drum surface as the gripping turret rotates past the drum, said gripping fingers gripping the leading edges of discrete pre-cut labels to leave trailing portions of the discrete pre-cut labels free to fly in unsupported relation as they are swept against the drum, and means to prevent glue contamination of said recesses.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 in which the recesses comprise peripheral grooves in the drum, said means comprising projecting tongues on the doctor blade which fit into grooves to clear excess glue from the grooves.
Claim 4
Dependent Claim
79 words
The apparatus of claim 1 in which said recesses comprise sockets in the drum, said means comprising plungers within said sockets and means for retracting said plungers when the sockets pass the gripping fingers to receive the fingers below the drum surface and for advancing said plungers to be flush with the drum surface when the sockets pass the doctor blade, said doctor blade having a straight edge in contact with the surface of the drum and said plungers.
Claim 5
Dependent Claim
20 words
The apparatus of claim 1 in which the doctor blade is provided at its top with a glue supply nozzle.
Claim 6
Dependent Claim
34 words
The apparatus of claim 1 in which the gripping turret is provided with air nozzles which jet a stream of air against the flying label portions to urge these portions against the glue drum.