Segmented spacer ring

Details Segmented spacer ring Segmented spacer ring

1984-04-26

1985-11-12

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

425183, 425193, 425195, 425388, 425420, 425809, B29C 114, B29C 1700

Patent

active

045525226

ABSTRACT:
Apparatus is disclosed for making sheet-plastic articles, such as lids for disposable drinking cups, by vacuum forming. The invention provides spacers that fit into the holes in the stripper plate of the apparatus for the purpose of matching the size of the hole closely to that of the die impression. The spacers are flanged and in three segments, the segments being so arranged that two of the segments can be first placed in the hole, their flanges being entered into a groove in the hole, then the third is located in the hole and maneuvered radially outwards until its flange too is located in the groove. The segments are retained in place with a spring ring. The segmented spacers can easily be inserted at arm's length and by feel alone. The spacers are themselves radially thin so that the holes in the stripper plate can be packed tightly together.

REFERENCES:
patent: 2153087 (1939-04-01), Knapp
patent: 3114956 (1963-12-01), Gannaway

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