Canadian wood products industries . Fig. 1 (b)—The test pieces used by Kahrs tests were made by the Service at the Forest ProductsLaboratory. The methods that have been proposed for makingthe strength test are briefly described below. Kahrs method.—Kahrs used blocks of well-sea-soned oak, glued end to end. the area of the jointeither 1 square inch or square inches (one hun-dredth part of one square foot). The length of theformer type of block was 41/? inches, and a shoulderwas left at the end away from the joint to impartgreater strength. The blocks were glued togetherafter a careful weig
Canadian wood products industries . Fig. 1 (b)—The test pieces used by Kahrs tests were made by the Service at the Forest ProductsLaboratory. The methods that have been proposed for makingthe strength test are briefly described below. Kahrs method.—Kahrs used blocks of well-sea-soned oak, glued end to end. the area of the jointeither 1 square inch or square inches (one hun-dredth part of one square foot). The length of theformer type of block was 41/? inches, and a shoulderwas left at the end away from the joint to impartgreater strength. The blocks were glued togetherafter a careful weighing and measuring and varnish-. Fig-. 1 (a)—The breaking machine used by Kahrs ency, viscosity, and melting point, and analyses forcertain chemical groups, as a gelatin, P gelatin, etc.,have been proposed as being true indications of thereal strength value. One or another of these propo- *Formerly Industrial Fellow of the Mellon Institute of Industrial Re-search and Research Chemist for Armour & Co., Chicago; now on thestaff of Lafayette article represents a part of the section of the due as an Ad-hesive in the writers treatise on The Chemistry and Technology ofGelatin and Glue, published by the McGraw Hill Company of New Vork
Size: 1224px × 2042px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectfurnitu, bookyear1922
