. The street railway review . owbecome standard with many of the largest railway companies in thecountry. When this device was first presented to Messrs. Matthewsthey were equally as doubtful of its merit before taking hold of itas nearly every one else, and, to satisfy themselves, had C. Carpenter, of Cornell University, make some 70 odd testsof the different size anchors to determine their holding tests arc very interesting and arc covered in a report ofconsiderable length, from which the following is an extract; During the past few months the writer had an opportunity of
. The street railway review . owbecome standard with many of the largest railway companies in thecountry. When this device was first presented to Messrs. Matthewsthey were equally as doubtful of its merit before taking hold of itas nearly every one else, and, to satisfy themselves, had C. Carpenter, of Cornell University, make some 70 odd testsof the different size anchors to determine their holding tests arc very interesting and arc covered in a report ofconsiderable length, from which the following is an extract; During the past few months the writer had an opportunity ofinvestigating the holding power of a simple anchor, the results ofwhich are believed to be of considerable general interest, as thisanchor can be placed in the ground without any digging and willhold an enormous strain. The anchors to which I refer are termed after the inventor,the Stombaugh Guy Anchor. They arc made of various sizes, and STDMBAUGHGtfY ANCHORS w W N MAT I HEWS V> HK^O 600Curk:u«i Birt^ st ,. W. N. MATTHEWS & BRO. consist in each case of one full helix or screw thread of cast iron,which is attached either to a long iron bar or to a guy wire asdesired. In general the anchors are quickly and readily inserted inthe ground. Before making the tests the writer considerably un-derrated the holding power of these anchors, and was much aston-ished to find the magnitude of the resistance which they offered. During the tests, a slight movement of the anchor was alwaysobtained before the resistance was reached. After amovement which varied from yi in. to 2 in. the resistance felloff very rapidly. The holding power in clay was essentially greaterthan that in sand when the averages of all cases are considered,the resistance being from 15 to 20 per cent greater, but the rangeof testing could not, on account of conditions, be extended so far. By comparison of the various results it was found that theresistance of the anchors in sandy ground can be ex
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