. The street railway review . llowing descriptions. The joint consists ofwhat may be called two Z or special bars, Fig. i, which are rivetedon to the webs of the rail. These plates are not made to fit thefishing section of the rail; on the contrary, spaces are left under the 7Tn YKAn, No. 2— 27, | |i .\1I,Y STRKKT RK\IK\V. 647 head, tram ami aiuiunl the font uf llic rail. Tlicsc spaces arc filledwitli molten zinc, which enters into and fills out all the irregularitiesof the rolled surfaces, thus giving an absolutely continuous and per-fect hearing throughout the whole len
. The street railway review . llowing descriptions. The joint consists ofwhat may be called two Z or special bars, Fig. i, which are rivetedon to the webs of the rail. These plates are not made to fit thefishing section of the rail; on the contrary, spaces are left under the 7Tn YKAn, No. 2— 27, | |i .\1I,Y STRKKT RK\IK\V. 647 head, tram ami aiuiunl the font uf llic rail. Tlicsc spaces arc filledwitli molten zinc, which enters into and fills out all the irregularitiesof the rolled surfaces, thus giving an absolutely continuous and per-fect hearing throughout the whole length and width of the flanges ofIhe plates. It is ohvlous that such a continuous contact could not b; by inserting wedges between the plates and the trams, or the platesand the head of the rail. The wedges arc then driven in with alight hammer until the straight-edge has a continuous bearing. While the plates arc held in place by four temporary bolts (), the rivet holes arc reamed to I in. diameter (I-ig. 5) by a. REAMKK obtained by the most laborious machining or milling of those sur-faces. The adhesion of the molten zinc to the rails and plates, to-gether with the body-bound rivets, hold the joint permanently tight,and at the same time prevent expansion, thus making the rails method of constructing the joint is as follows: .^fter the portable pneumatic reamer (Kig. 6). The 12 i-in. steel rivetsare then driven by a portable pneumatic riveter (Fig. 7). Thisinsures the filling 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 plate
Size: 2144px × 1166px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
