tie bolts, bearing bars, grate bars, sup- ordinary form is represented in Fig. 6, the bolts passing ports, damper, connection, and chimney doors. through castings, B, which act as large washers. The damper is generally a slide, as shown at E, Fig. 3, which is placed at the junction of the back… … The bearing bars are for the supports of the grate bars. and the back bearer is laid op the bridge wall. In the case of long grates, an intermediate bearer is required, which is an chored in the side walls, and supported on the middle on bricks, if the grate is also very wide. It is better,…
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