Machinery for patching envelopes and the like

Details Machinery for patching envelopes and the like Machinery for patching envelopes and the like

1973-07-20

1976-05-18

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

93 61A, 156521, 156552, 156568, B32B 3100, B31B 100

Patent

active

039575705

ABSTRACT:
Patches for envelope windows are cut, one per envelope, from a patch web supplied at a surface speed proportional to but lower than the speed of a travelling envelope web. The cut patches are transferred from the cut-off apparatus to the envelope web by a rotary vacuum system, at a surface speed which equals the speed of the latter web, or is accelerated to this latter speed. Steps and means are provided for insuring proper positions and motions of the cut-off patch, at points where the speed thereof changes.

REFERENCES:
patent: 3322600 (1967-05-01), Harrison et al.
patent: 3431830 (1969-03-01), Stovall
patent: 3502536 (1970-03-01), Youngman et al.
patent: 3582437 (1971-06-01), Lenk
patent: 3654038 (1972-04-01), Hottendorf

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