US 4,509,245 AGranted

Apparatus for securing parts on elongated writing instruments, in particular for securing an eraser for a sheath receiving it on a pencil

AssigneeBleistiftmaschinenfabrik Dipl. Ing. Karl Zuber GmbH & Co. KG

InventorsWalter Barth, Harald H. Kremser

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Abstract

In a method intended particularly for securing an eraser and/or a sheath eiving it on a pencil in one continuous operation, it is provided that the pencils are conveyed through a work station and during that time, several sheaths or erasers and associated tools are simultaneously moved along with the pencils at the same speed as the pencils during a first work phase and are attached to the pencils during this time via the tools; in a second work phase, after the attachment process is completed, the tools are returned rapidly to the outset point, counter to the conveyance direction. The invention is furthermore directed to an apparatus for performing this method, which assures a very high operating speed. This apparatus includes at least one feeder device connected with a supply magazine for supplying one eraser or sheath to each of n feeder recesses having closed rear sides and being disposed beside one another in the feeder device. The feeder device is coupled via a cam drive with the drive mechanism of the transporting device in such a manner that the method step provided in accordance with the intention can in fact be performed.

Claims19

Dependent claims

In an apparatus for attaching parts, such as erasers and/or sheaths for holding the erasers, on the ends of elongated writing instruments, the improvement comprising:

a linear conveyor device for carrying sets of writing instruments through said apparatus, said conveyor device defining means for supporting said writing instruments normal to the direction of movement of said conveyor device and parallel to, and equidistantly spaced apart from, one another:
means for feeding said supplied parts toward said conveyor device, said supplying means being coupled to said feeding means at said location, each said feeding means including means for pushing said parts onto said writing instruments and menas for moving said feeding means parallel to, adjacent and at the same rate as said conveyor device;
whereby as said conveyor device carries said writing instruments to said feeding means, and when said writing instruments register with said supplied parts, said feeding means first moves from said location in the same direction as said conveyor device while said parts as pushed onto said writing instruments, and then moves in the reciprocal direction back to said location whereupon said supplying means again supplied parts to said feeding means.

Dependencies are inferred from the claim text.