Means and methods for making blocks of crystal clear ice

Details Means and methods for making blocks of crystal clear ice Means and methods for making blocks of crystal clear ice

1990-11-16

1991-12-31

Tapolcai, William E.

Refrigeration

Material cooling means including gas-liquid contactor

Submerged gas inlet

62 70, 62356, F25C 120

Patent

active

050760696

ABSTRACT:
Apparatus for making large blocks of crystal clear ice for ice carving has a tank of brine of freezing temperature. A water can filled with water of the size and form of the desired ice block is in the tank. A tube extends down to the bottom of the container. A source of air under pressure about one and three-quarter pounds/square inch, is connected to the tube to bubble air out of the container to drive air out of the water to be frozen, by bubbling action. A rotating cam is connected to oscillate the tube up and down. A resilient hollow bumper is connected to the bottom of the tube, the cam being designed to raise the tube a predetermined amount, approximately two inches, and then permitting a drop, whereby, as ice forms from the bottom, the tube is gradually retracted so that it will not become frozen in.

REFERENCES:
patent: 1160945 (1915-11-01), Murphy
patent: 1185629 (1916-06-01), Campbell
patent: 3959981 (1976-06-01), Anderson

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