. Cassier's magazine . Section onXY. — P/an X m Ci—i TTr 3 D- -_A- p7_B_B_ u n 1 1 Hi -■ Y FIG. O. APPARATUS USED AT THE NATIONAL PHYSICAL LABORATORY originally by Dr. Stanton, is shown.(See Fig. 6). The tup A is fixed on the end ofa long arm pivoted at B and is re-peatedly raised and allowed to fall bymeans of the lever M actuated by thecrank J. The specimen D, whichconsists of a round bar 4 inches longby y2 inch diameter, with a grooveturned in it .at the centre, is held ina chuck in such a way that it is sup-ported on knife edges 3 inches apart,and is subjected to an impact loadeach time th
. Cassier's magazine . Section onXY. — P/an X m Ci—i TTr 3 D- -_A- p7_B_B_ u n 1 1 Hi -■ Y FIG. O. APPARATUS USED AT THE NATIONAL PHYSICAL LABORATORY originally by Dr. Stanton, is shown.(See Fig. 6). The tup A is fixed on the end ofa long arm pivoted at B and is re-peatedly raised and allowed to fall bymeans of the lever M actuated by thecrank J. The specimen D, whichconsists of a round bar 4 inches longby y2 inch diameter, with a grooveturned in it .at the centre, is held ina chuck in such a way that it is sup-ported on knife edges 3 inches apart,and is subjected to an impact loadeach time the hammer falls. Betweensuccessive blows the specimen isturned through 180 degrees, so thatit is first bent in one direction andthen in the other. The arrangementfor rotating the test-piece is showndiagramatically, but as a matter offact, the specimen itself does not re-volve continuously. After receivinga blow it is suddenly turned over andthen remains at rest until after thenext blow has been delivered, whenthe process is rep
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
