The Laboratory Storage of Dry Ice HAROLD SIMMONS BOOTH, Western R e s e w University, Cleveland, Ohio,and DONALD RAY MARTW, University of Illinois, Urbana,Illinois
THE researches with gases being carried out a t INWestern Reserve University it is necessary that a considerable quantity of Dry Ice be available a t all times. A survey of the literature reveals several storage containers for commercial use but none of simple design suitable for laboratory u ~ e . ' J . ~ ~ Several ~ ~ ' of the containers described in this paper have been made to afford efficientstorage of Dry Ice in the lahoratory. The storage box is made of white pine lumber as shown in the two sectional drawings in Figure 1. The container is 26 inches square and 30 inches high. Centered in the box is a chamber 12 inches square and 16 inches deep to accommodate a 50-pound block of Dry Ice. The void between this chamber and the outside of the box is insulated withground cork, vermiculite, or mineral wool, as shown by the cross hatching in the side-sectional view. This cross hatching is omitted in the topsectional view for sake of clarity. The top is hinged with two strap hinges Y and is opened by means of a brass handle Q. To afford better insulation the Dry Ice compartment is sealed by a strip of sponge rubber attached to pieces L of the lid. For convenience in movement about the laboratory the box is placed upon four casters Z. The wooden parts are cut as shown in Figure 1 and are fitted together with wood screws of the appropriate size. The rounded comers are produced by the use of a quarter round wooden inset. The list of parts exclusive of wood screws follows:
W
X Y 1 JONES, C. L., AND J. D. SMALL, U. S. Pat. 1,786,161,to Dryice Equipment Corp., (Dec. 23,1930). 2 S O ~ B RH S.,A,, U. S. Pat. 1,936,214, to Mathieson Alkali Works. Inc., (Nov. 21, 1933). KURTH.R.. Brit. Pat. 394.592 (June 29,1934). * Luc~s.J. W., U. S. Pat. 2,062,589(Dec. 1,1936). 6 BIRDSALL, W. T., U. S. Pat. 2,229,438, to Mergenthaler Linotype Co., (Jan. 21, 1941).
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% X 12% X 15V18 inches-Plynwd 1 piece '/r X 13 X 13 inehes-Plywood 2 &rap hinges (6 inch) 4 emtan
a pi-
ACF2?OWLEDGEMENT
We wish to acknowledge our indebtedness to Mr. F. E. Hutchins for suggested improvements in our original design.
