Apparatus for producing double-walled heat insulating containers

Details Apparatus for producing double-walled heat insulating containers Apparatus for producing double-walled heat insulating containers

1979-04-18

1981-01-06

Kellogg, Arthur D.

Glass manufacturing

Fusion bonding means

Concentric body making

65 54, 65 55, 65 56, 65109, C03B 2313

Patent

active

042434017

ABSTRACT:
Inner and outer blow-moulded glass bulbs, each open at one end thereof, are positioned one inside another on an apparatus having a chuck means which holds the bulbs in a spaced apart relation. The apparatus includes pivotally moveable gripping means which engage outer surface edges of the outer bulb along the open end thereof and positively hold such surface edges against an adjacent support surface while deformation heat and force are applied to the outer bulb surfaces above such edges to selectively compress or stretch such outer bulb surfaces toward the adjacent inner bulb surfaces. Thereafter, the surfaces of the inner and outer bulbs which are in contact with one another are fused together and the open ends of the respective bulbs are sealed to one another to define a container mouth.

REFERENCES:
patent: 1156971 (1915-10-01), Burrows
patent: 1735027 (1929-11-01), Wetmore
patent: 1755307 (1930-04-01), Rohl
patent: 2593999 (1952-04-01), Eisler
patent: 2805787 (1957-09-01), Sherman

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