. Official proceedings . point wasdetermined by repeating the above tests until all points wherereadings were desired, had been covered. Description of Frame Used in This Paper. The two frames which will lie discussed in this paper werefrom two general types of design, designated according to thecross section of the dififerent members in the frames, namely,the L section and the F section. The L section tvpe isas shown in Fig. 8 and will for this paper be referred to here-after as frame A. This design of frame has been discardedby the manufacturers. The F section type, as shown in Fig. 9, is a


. Official proceedings . point wasdetermined by repeating the above tests until all points wherereadings were desired, had been covered. Description of Frame Used in This Paper. The two frames which will lie discussed in this paper werefrom two general types of design, designated according to thecross section of the dififerent members in the frames, namely,the L section and the F section. The L section tvpe isas shown in Fig. 8 and will for this paper be referred to here-after as frame A. This design of frame has been discardedby the manufacturers. The F section type, as shown in Fig. 9, is a later typeof design and will hereafter be referred to as frame B. Several changes in the B type of frame were made as thetests progressed. For instance it was soon found that a Btype of frame with the ordinary bead aroimd the inside of thetriangular opening was apparently weak at points 11 and that frames of this type having dififerent width beads fron? 13^ .J° ° o oV,., ^ o r T^ --1I ^r. \. o ■( ^ OID ~M 1 ii-. ^-W$. X nc^piMca ON »/\cK. r^O o o oVn o o o o


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Keywords: ., bookauthorrailwayc, bookcentury1900, bookdecade1900, bookyear1901