of material required, to save shipping- 

 weight and warehouse space, and at the 

 same time to make it stronger and safer. 

 The principal American wood species 

 have been classified for box making, 

 box designs have been standardized and 

 ^specifications prepared for the proper 

 "lumber, size, and spacing of nails. 

 Through the cooperation of railway 

 companies, box makers, and shippers, 

 the Laboratory's findings and recom- 

 mendations are widely used. 



Container investigations are carried 

 on with the aid of special equipment, 

 including dummy loading materials and 

 testing machinery which subjects pack- 

 ages to repeated shocks and vibrations 

 such as they would receive in transit. 

 In addition to studies of the design and 

 fabrication of wooden, veneered, and 

 composite containers and the improve- 

 ment of commercial specifications, the 

 work has been extended to the broad 

 field of fiberboard containers, in which 

 increasing quantities of wood are being 

 used in the form of pulp. The investi- 

 gation includes strength tests of the 

 component papers, the formation of 

 commercial and experimental types of 



M-22077-F 



Revolving drum for testing boxes and crates. 



boards, and the production and test- 

 ing of finished boxes, with the purpose 

 of bringing to this important class of 

 containers the engineering principles and 

 methods that are so largely improving 

 the service of wooden containers. 



Equipment for corrugating and gluing fiber container board. 





