. The Street railway journal . g up of the holes by the rivets. The next stepis to put in place the iron clamps for holding the asbestos clothpads and clay on the bottom and at the ends of plate and abovethe base of rail. The spaces between the head and tram and plateare temporarily caulked with asbestos cloth. The plates are then September 30, 1905.] STREET RAILWAY JOURNAL. 577 warmed by fuel-oil burners, operated by a portable compressor, toa temperature of about 300 degs. to 400 degs., after which themolten zinc is immediately introduced through a I-in. hole locatedin the center of the lowe
. The Street railway journal . g up of the holes by the rivets. The next stepis to put in place the iron clamps for holding the asbestos clothpads and clay on the bottom and at the ends of plate and abovethe base of rail. The spaces between the head and tram and plateare temporarily caulked with asbestos cloth. The plates are then September 30, 1905.] STREET RAILWAY JOURNAL. 577 warmed by fuel-oil burners, operated by a portable compressor, toa temperature of about 300 degs. to 400 degs., after which themolten zinc is immediately introduced through a I-in. hole locatedin the center of the lower portion of plate, the remaining spaceunderneath head and tram of rail being filled by the aid of dams. for investigation after having been in the ground for over twoyears), and, therefore, gives a thorough and continuous electricalconnection. We know of very interesting data about the electricalbonding quality of this joint, but as these data are the property ofthe Franklin Institute, we are not at liberty to divulge them at. FIG. 6.—PORTABLE PNEUMATIC REAMER These dams consist of aluminum castings padded with asbestoscloth. From the above description it will be seen that this joint com-bines the characteristics and advantages of both classes of jointsmentioned above, obviating their defects. While it is a permanentjoint, in that it holds the ends of the rails permanently together, it present. We will only say that, after a thorough test by an electricalexpert of this city of joints that had been in the ground over twoyears, and under the heaviest traffic, the resistance was found tobe less than the rails themselves. Another, and we think a very im-portant, feature of this joint is the fact that its initial cost is prac-tically a permanent investment. From the nature of its construc-
Size: 2150px × 1162px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
