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Cork insulation; a complete illustrated textbook on cork insulation ...

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408 CORK INSULATION<br />

<strong>on</strong>ing milli<strong>on</strong>s of tiny dead air cells forming a veritable deadline against<br />

the entrance of heat into the soda fountain.<br />

Ice Cream Compartment Linings.—AW materials that enter into the<br />

c<strong>on</strong>structi<strong>on</strong> of the Guaranty are selected with a view to securing the<br />

best for the use intended. Tests and experiments have fully and clearly<br />

dem<strong>on</strong>strated that copper is the most practical and durable for soda foun-<br />

tain linings. The Guaranty fountain is lined with 20-ounce hot rolled<br />

copper, fr<strong>on</strong>t, bottom and back in <strong>on</strong>e piece. Ends are double seamed,<br />

interlocked and soldered. The bottom is reinforced with 20-gauge Key-<br />

st<strong>on</strong>e copper-bearing steel to insure greater strength and resistance.<br />

Tank and Sub-Covers.—Water-tight tanks and sub-covers are required<br />

to hold the ice cream cans. Tank bodies are made of 32-ounce hot rolled<br />

tinned copper and have <strong>on</strong>e vertical double seam soldered <strong>on</strong> the outside.<br />

Tank bottom is also 32-ounce hot rolled tinned copper and is double<br />

seamed and soldered to the bodies. A galvanized copper-bearing steel<br />

sleeve extending 6 inches down into the tank is soldered to it. This sleeve<br />

protects the copper and prevents dents, or perhaps punctures from care-<br />

lessness in removing or inserting the ice cream cans. The <str<strong>on</strong>g>complete</str<strong>on</strong>g> tanks<br />

are sweated to a sub-cover made of 32-ounce hot rolled copper.<br />

The sub-cover has the proper number of oval openings carefully<br />

machine stamped and also has an opening through which the coil can be<br />

removed should it ever become necessary.<br />

In the bottom of each tank there is placed a 20-gauge galvanized<br />

copper-bearing steel plate as additi<strong>on</strong>al reinforcement to prevent the tank<br />

bottom from being dented when the ice cream cans are dropped into place.<br />

After the tank and sub-cover unit have been assembled as described,<br />

it is placed into the creamer box and the sub-cover is sweated to the<br />

lining. The Frigidaire boiler is then installed and the entire unit is filled<br />

with water and tested for leaks.<br />

Cooler and Dry Storage Refrigerator. — An integral part of the<br />

creamer, separated from the ice cream compartment by 2^-inch <strong>cork</strong><br />

partiti<strong>on</strong>; lined with 16-ounce cold rolled copper tinned <strong>on</strong>e side, fr<strong>on</strong>t,<br />

bottom and back in <strong>on</strong>e piece, ends double seamed, interlocked and soldered.<br />

This compartment is divided by a semi-insulated partiti<strong>on</strong>. One side c<strong>on</strong>tains<br />

a water bath and refrigerating coil for cooling soda and city water<br />

and the other side is a dry storage compartment which secures its refrig-<br />

erati<strong>on</strong> through the semi-insulated partiti<strong>on</strong>. An outlet with an overflow<br />

pipe topped with a funnel is provided to drain the syrup unit and cooler<br />

compartment when necessary.<br />

Brick Compartment.—This compartment is separated from the bulk<br />

cream compartment by a metal baffle partiti<strong>on</strong>. This compartment c<strong>on</strong>-<br />

tains the boiler which is regulated to maintain a temperature of approxi-<br />

mately zero. All Guaranty standard plans are shown with <strong>on</strong>e rectangu-<br />

lar brick compartment with a capacity of 50 <strong>on</strong>e-quart bricks.<br />

Bulk Compartment.—The correctly proporti<strong>on</strong>ed metal baffle which

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