Napkin folder

Details Napkin folder Napkin folder

1988-05-19

1989-09-12

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493405, 493937, 493960, B31B 126

Patent

active

048655791

ABSTRACT:
A sheet folding apparatus comprises a substantially planar surface for receiving and supporting a substantially rectangular extended sheet. The apparatus includes a first folder for folding the substantially rectangular extended sheet along a first diagonal axis thereof to form a once folded sheet defining a long base, a second folder for folding the two halves of the base of the once folded sheet towards each other and into parallel disposition with an axis transverse to the axis of the base to form a twice folded sheet, and a third folder for folding the two halves of the twice folded sheet along a second diagonal axis thereof to form a thrice folded sheet while simultaneously removing the sheet from the substantially planar surface.

REFERENCES:
patent: 797864 (1905-08-01), Naylor
patent: 1806125 (1931-05-01), Spohn
patent: 1809000 (1931-06-01), Stealy
patent: 3658818 (1972-08-01), Burger et al.
patent: 4338086 (1982-07-01), Heater
patent: 4421500 (1983-12-01), Smith
patent: 4636192 (1987-01-01), Vogtlander et al.
patent: 4648861 (1987-03-01), Pierce

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