64 MARKET DAIRYING 



placed at intervals of about one foot. Double thickness 

 of building paper is placed on both sides of the strips 

 and tacked to the boxes. A one-inch strip, two inches 

 wide, covers the upper space between the one-inch strips, 

 thus making a dead-air space between the two boxes. 

 The construction of the cover is the same as that of the 

 bottom, with the exception that there is a flange at the 

 front and sides of the cover. 



The sides, bottom and cover of the refrigerator are built 

 of three-quarter-inch tongued and grooved lumber, five 

 and a half inches wide. The ends are constructed of 

 one and one-eighth inch tongued and grooved flooring 

 three and a half inches wide. The inside of the ice box 

 is lined with galvanized iron. To insure tightness, a 

 layer of felt is tacked around the box and cover where 

 the two meet. The four vertical edges of the box 

 are tightened and strengthened by tacking over each 

 a double layer of paper, which is covered with two 6-inch 

 boards. 



A heavy weight attached to a one-half inch rope, run- 

 ning over a pulley fastened to the ceiling, raises the 

 cover and holds it open whefl desired. A short piece 

 of rope with a hook attached is used to counterbalance 

 the weight by hooking to the front of the box, thus allow- 

 ing the full weight of the cover to rest on the box. 



A short piece of one-half inch gas pipe is inserted 

 through the bottom of the box to provide drainage, the 

 outlet of this pipe being connected with a trap to prevent 

 entrance of air into the box. 



The entire construction of the ice box is so simple that 

 any one with a little knowledge of carpentry can readily 

 build it. 



