. The Street railway journal . ompany. It consists of three parts, two copper thimbles and the connecting copper rod. Oneach end of the copper rodis a truncated cone headwith a fillet at the inside of the thimbleis tapered to fit the headon the bond, while theoutside is slightly taperedin the opposite way. In applying the bondthe cone .shaped heads areplaced in the holes in therail from one side and thethimbles are slipped overthem from the other. A portable hand press is then applied, andthe wedge .shaped head of the bond is forced into the thimble sothat it is not possible to see th
. The Street railway journal . ompany. It consists of three parts, two copper thimbles and the connecting copper rod. Oneach end of the copper rodis a truncated cone headwith a fillet at the inside of the thimbleis tapered to fit the headon the bond, while theoutside is slightly taperedin the opposite way. In applying the bondthe cone .shaped heads areplaced in the holes in therail from one side and thethimbles are slipped overthem from the other. A portable hand press is then applied, andthe wedge .shaped head of the bond is forced into the thimble sothat it is not possible to see the line separating the thimble and thehead in a cross section of the two. The end of the head of the bondis expanded by a center punch, held in position in the press. The special features claimed for the bond are that it consists ofbut few parts, and that when installed, owing to the pressure be-tween the head and the thimble, and also to the fact that they areof the same kind of metal, the two become one, both electrically and. SECTION OF BOND. f»• ^ T • i fI
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
