US2100521A - Ice can with integral air tube - Google Patents

Description

Nov. 30, 1937. w. R. ROBINSON ICE CAN WITH INTEGRAL AIR TUBE Filed Jan. 31, 1936 fIIIIIIIIIII/IIIIIIIII INVENTOR MAL/AM Fa /M50 flcK/cva M 01,? ATTORNEYE Patented Nov. 30, 1937 UNITED STATES FATENT OFFICE 2' Claims.

raw water system of ice making.

In the manufacture of ice by the raw water system, each freezing can is usually provided with c of ice is formed in the can, and any impurities present in the water are not frozen into the ice but are collected in the which remains unfrozen freezing period.

protected from internal injury. It is an object construct the freezing can that a conduit for the of the can, and in a manner to successfully guard against damage to the conduit. Other objects and features of novelty will ap of the present application, the accompanying drawing, in which Fig. 1 is a perspective View of an ice can embodying the invention, a portion of the can being broken away to more fully illustrate the invention.

Fig. 2 is a fragmental perspective view on a larger scale showing that corner of the can in whichthe air conduit is located, and

Fig. 3 is a fragmental horizontal sectional View taken substantially on the line 33 of Fig. 2.

In the drawing I have illustrated an ice can comprising as its principal parts a bottom At the joint illustrated in Fig. 2 the wall element l2 has a flange it which is connected with the main part of the element bend around a short radius. The side Wall element H has a portion l1 which engages the inner surface of flange [6. This portion H, which thus overlaps the flange I6, is riveted or otherwise secured to the flange I 6, forming the seam l4 which extends throughout the height of the can.

The element II beyond joint I4 is so bent as to form an integral tubular member which fits snugly within the radius of the can corner, and constitutes an air conduit I8.

being understood, of course, that thls is done before the elements ll riveted together. The free dling of the cans otherwise. I

A small section of the tube l8 may be removed from its lower end, as illustrated in Fig. 1, so as I2 by a right angle to provide an exit for air. The tube may also be drilled, as at 20, to provide air exits if desired. Any suitable means for connecting the upper extremity of the tube to an air preessure system may be utilized.

After the seams l3 and M are formed and before the base It is attached to the side wall elements, the seam corners of the latter are dipped one at a time into molten solder or the like, and the excess solder is drained off by tilting the assembled side elements toward one end. This not only seals the seams, but also results in a line of sealing material 2| being formed in the angle between the tube l8 and the wall element l2. A similar line 22 of sealing material is formed within the tube [8 at the joint between the sharp bend l9 and the edge of the sheet from which the tube is formed. The seal 2| would probably be sufiicient to render the tube fluidtight, and the seal 22 provides a second barrier against the leakage of air out of the tube during its travel down to the lower. extremity of the latter.

Variations from the described structure may be employed. Accordingly, I desire it to be understood that the scope of the invention is to be regarded as defined exclusively by the appended claims, rather than by the foregoing description or the accompanying illustration.

Having thus described my invention I claim:

1. A freezing can for use in the manufacture of ice, having a vertical seam formed of two overlapping elements only joined together adjacent a corner of the can, the inner overlapping element being bent sharply inward between the seam and the corner of the can and then curved backwardly and outwardly into a tubular member filling the corner bend of the can and constituting an air conduit extending from the top to the bottom of the can, the free edge of the inner element being concealed and protected and lying adjacent the said sharp bend a seal between the outer wall of the tubular member and the adjacent wall of the can, and a reinforcing band secured to the can at the upper edge thereof extending over said vertical seam.

2. In a freezing can for use in the manufacture of ice, two wall elements meeting at one of the corners of the can, the outer element having a right angle flange extending beyond the corner, the inner element engaging said flange, a seam between said inner element and flange spaced from the corner of the can, a tubular member formed in said inner element on theside of the seam toward the can corner, the metal of which the tubular'member is formed being curved first inwardly and then outwardly behind itself, terminating behind the first curve whereby the edge of the metal is held in place without fastenings, and whereby there aretwo thicknesses of metal only in the vertical seam, and a reinforcing band secured to the can at the upper edge thereof extending over said vertical seam.

WILLIAM R. ROBINSON.

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