. Canadian machinery and metalworking (January-June 1919). is-able, in practice, to use a diamond-shaped bar, and put the latter into thesquare groove in a vertical position. Thisplaces the sharp corners of the diamondbar in the square groove, opposite thejoints of the rolls. In Fig. 4 the posi-tion that the diamond bar occupies inthe square pass is represented in dottedoutline. It will be observed that theniamond bar does not quite extend tothe corners of the square pass, and thatit also is actuaUv longer than the dis-tance between the centre corners of thesquare in the top and bottom rolls.
. Canadian machinery and metalworking (January-June 1919). is-able, in practice, to use a diamond-shaped bar, and put the latter into thesquare groove in a vertical position. Thisplaces the sharp corners of the diamondbar in the square groove, opposite thejoints of the rolls. In Fig. 4 the posi-tion that the diamond bar occupies inthe square pass is represented in dottedoutline. It will be observed that theniamond bar does not quite extend tothe corners of the square pass, and thatit also is actuaUv longer than the dis-tance between the centre corners of thesquare in the top and bottom rolls. The reason for this is the necessity forhaving a sufficient amount of draft onthe diamond bar to just fill out the sec-tional area of the square pass so as tomake a good bar. As the corners onthe diamond bar that faces the jointsof the square rolls are already made, thechange of angle from a diamond to asquare keeps its corners sharp, the re-sult being a perfect square is made ifthe roller has used judgment in handlingContinued on page 65 62 Volume XX [,. WHAT OUR READERSTHINK AND DO
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
