Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1977-06-09
1982-02-16
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264334, B29F 100
Patent
active
043158862
ABSTRACT:
A flexible thermoplastic printing plate is mounted on a plate cylinder having a given curvature. In its unstressed condition, the printing plate has substantially the same curvature between its ends as the cylinder. The printing plate has laterally extending hooks at its ends. A stationary laterally extending projection on the cylinder engages the hook at one end of the plate. A movable laterally extending projection on the cylinder engages the hook at the other end of the plate; the movable projection is spring-loaded so as to tension the plate longitudinally on the cylinder. A plurality of gussets are formed in each hook and a plurality of recesses for receiving the respective gussets are formed in each projection. Opposite sides of two recesses in each projection are precisely located relative to the cylinder. The opposite sides of the two recesses receive the respective gussets with a close fit to index the plate laterally on the cylinder, while the sides of the remaining recesses receive their respective gussets with a sufficiently loose fit so as not to interfere with such indexing.
REFERENCES:
patent: 3220348 (1965-11-01), Royer
patent: 3408437 (1968-10-01), Wheeler
patent: 3533355 (1970-10-01), Wall
patent: 3696744 (1972-10-01), Etchell
patent: 3771449 (1973-11-01), Hill
patent: 3782281 (1974-01-01), Darnall
patent: 3791295 (1974-02-01), Albright
patent: 3986698 (1976-10-01), Darnall
Pavelko Thomas P.
The Times Mirror Company
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