. Electric railway journal . his replacement work canbe done by one man in a day or less, whereas thereplacement of a wooden tie in concrete foundationwill require the work of several men for probably alonger time. Owing to the careful selection of thesound white oak blocks used in connection with the me-chanical ties, these replacement features from wear ordecay are claimed to be remote possibilities. New Insulating Tape Made by SpecialProcess To meet the scarcity of woven tapes for insulatingpurposes a new kind of cambric tape has been devel-oped which has a fast edge even though it is not w
. Electric railway journal . his replacement work canbe done by one man in a day or less, whereas thereplacement of a wooden tie in concrete foundationwill require the work of several men for probably alonger time. Owing to the careful selection of thesound white oak blocks used in connection with the me-chanical ties, these replacement features from wear ordecay are claimed to be remote possibilities. New Insulating Tape Made by SpecialProcess To meet the scarcity of woven tapes for insulatingpurposes a new kind of cambric tape has been devel-oped which has a fast edge even though it is not tape, which is known as Fastej is made byFreydberg Brothers, Inc., New York City, and a specialprocess is used which prevents the edges from unravel-ing. The tape is said to have the same mechanical andelectrical properties as the woven type, and it is some-what cheaper to manufacture. It can be made in anydesired width, and while it can be secur-ed in severalthicknesses, 6 mils is the thickness most WELDING OUTFIT IN OPERATION A BASE WELD IS BEING MADE Experiment in Welding MechanicalTrack Joints An Attempt to Combine the Virtues of Electrically-Welded and Mechanical Joints BY MARTIN SCHREIBER Chief Engineer Public Service Railway, Newark, N. J. At a recent convention of the American Electric Rail-way Engineering Association the writer was impressed,while examining the exhibits of track joints, with thefact that development in this field has been along twogeneral lines, namely, mechanical joints and weldedjoints. Each of these has been developed to a considerablestate of perfection, but each has its limitations. In themechanical joints it is difficult to utilize the full strengthof the material in the plates, due to irregularities inthe surfaces which are supposed to be in contact. Inthe welded joints, dependence is placed largely uponwelded areas, and again the full mechanical strength ofthe plate cannot be utilized. As the merits of each type of joi
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