. Bulletin - United States National Museum . 20-ton machine of the ordinary was the chief advantage claimed for the scheme. The sameresults could be achieved by rack or cable, but Sellers was quick topoint out the complexity and expense of such systems. A moredetailed accounting of the principles and claims of this invention Figure 27.—Details of the Center Rail (fig. 2), adhesionmachinery (figs. 3 and 4), and safety clamp brake for the centerrail (figs. 10 and 11) as shown in the 1847 British patent. Infig. 4 of this plate, P is the steam cylinder used to increasepressure should
. Bulletin - United States National Museum . 20-ton machine of the ordinary was the chief advantage claimed for the scheme. The sameresults could be achieved by rack or cable, but Sellers was quick topoint out the complexity and expense of such systems. A moredetailed accounting of the principles and claims of this invention Figure 27.—Details of the Center Rail (fig. 2), adhesionmachinery (figs. 3 and 4), and safety clamp brake for the centerrail (figs. 10 and 11) as shown in the 1847 British patent. Infig. 4 of this plate, P is the steam cylinder used to increasepressure should the draw-bar weight prove insufficient; KKKis a coil spring to keep the lever engaged; HH are the massivelevers connected to the frame by pins J-J which support theadhesion wheels; I-I are the toggles. A is the center rail,B the adhesion wheels, L the draw-bar which connects thetrain and toggles, M a pin by which the draw-bar could beheld stationary. The distortion of B in figure 4 is due to thedrawing lying across the fold of a page. 55. -<-^w—^it--—J^k. ^fy^ ^-^s—JfC ^J5|s j|t^ :! ^ ^ ^ I I I
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
