. Railway mechanical engineer . ice is simple and will readilybe understood by reference to the illustrations. It will beseen that the side and center frames are recessed at the frontends, the length of the recess being sufficient to take in thecast steel lifting frames of rectangular cross-section with trunnion bearings for the three standard finger bars. Squareholes are cored tlirough the ends of the lifting frames, whichare reinforced with hubs to provide ample strength, and theframes are mounted on a 2-in. square wrought iron staff, with the lifting frames and a cast steel lifti
. Railway mechanical engineer . ice is simple and will readilybe understood by reference to the illustrations. It will beseen that the side and center frames are recessed at the frontends, the length of the recess being sufficient to take in thecast steel lifting frames of rectangular cross-section with trunnion bearings for the three standard finger bars. Squareholes are cored tlirough the ends of the lifting frames, whichare reinforced with hubs to provide ample strength, and theframes are mounted on a 2-in. square wrought iron staff, with the lifting frames and a cast steel liftingarm mounted on it, is placed in the stationary grate frames,one end being slipped into a circular hole cored in the sideframe and the other dropped into a slot in the center assembled the slot in the center frame is closed by thefront tie bar. To permit the three finger bars in the lifting frame tobe shaken with the remainder of the bars in the front sec-tion of the grate, the shaker arms of the bars in the lifting. Front End of the Grate Showing the Operating Shaft and Lifting Frames frame and those in the remainder of the section are con-nected independently, the two systems being united through asecond connecting rod with one connection to each order that the movement of the lifting frame may notinterfere with the operation of the shaker rigging, the rodconnecting the three finger bars in the liftingframe is ex-tended forward so that when the finger bars are in theirnormal position its end is directly under the lifting operating connection is made at this point so that whenthe lifting grate is open, the finger bars retain positionsparallel to each other and to the grates in the remainder oftiie section but change their angular position relative to thelifting frame itself. Either with the lifting frame open orclosed, there is no interference with the shaking of the gratesin the entire section. The lifting grate is designed to swing through an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
