BOXES AND BOX SHOOKS 



255 



sizes of cans which each box is designed to contain, the thickness and 

 sizes of the individual shooks used in boxes and the number of nails. 

 These specifications were based on years of experience followed by tests 

 made at the U. S. Forest Products Laboratory and were adopted in 191 7 

 by the National Association of Box Manufacturers, the National Can- 

 ners' Association and the National Wholesale Grocers' Association. 



STANDARD SPECIFICATIONS FOR CANNED FOOD BOXES 



Domestic 



Style A: Nailed Wooden Boxes. 

 Style B : Lock Comer Wooden Boxes. 



Boxes must be well manufactured from lumber which is sound (free from decay or 

 dote), and well seasoned. Boxes when stored after nailing should not be placed in a 

 heated room. Lumber must be free from knot holes, loose or rotten knots greater 

 than I in. in diameter. No knots will be permitted which will interfere with the 

 proper nailing of the box. 



The grouping of woods with the specifications following will govern: 



White pine 



Aspen 



Spruce 



Western yellow pine 



Cottonwood 



Yellow poplar 



Balsam fir 



■Chestnut 



Sugar pine 



Group i 



Basswood 



Cypress 



Southern yellow pine 



Hemlock 



Virginia and Carolina pine 



Willow 



Noble fir 



Magnolia 



Buckeye 



Boxes to Carry: 



White fir 

 Cedar 

 Redwood 

 Butternut 

 Cucumber 

 Alpine fir 

 Lodgepole pine 

 Douglas fir 

 Larch 



24 No. 25 cans; 

 24 No. 3 cans; 

 6 No. 8 cans; 

 6 No. 10 cans; 

 And other cans of approximately the same content. 



NAILED CONSTRUCTION 



Ends. 



Not less than f in. thick one or two pieces. ' Two-piece ends, cleated or fastened 

 with three corrugated fasteners. When one-piece sides are used the third corrugated 

 fastener may be omitted. 



1 The thicknesses specified herein are to allow for an occasional unavoidable variation in manufac- 

 -ure, but that variation shall not exceed one sixty-fourth of an inch below the thicknesses specified. 



