Picture inside the Lawrence yard's left (southeast) side looking towards the mainlines and the x-over with new switch motor and mechanism. Lawrence yard @ <b>Andover St.</b> at the North end of MBTAs Lawrence, MA yard .near <b>Broadway.</b> 
<p>The two centered tracks in the foreground show the catching rails, the frogs (cross-over) are clearly visible, and at foreground right, the third rail (above the second fishplate) is a hinge-butt-end of the movable rail of that junction mechanism. 
</p>
<dl><dd><i>See better detail in next picture: <a href="//commons.wikimedia.org/wiki/File:2014-0428-IMG_5169-Lawrence,MA_Yd,_switch_frog_and_guides.JPG" title="File:2014-0428-IMG 5169-Lawrence,MA Yd, switch frog and guides.JPG">File:2014-0428-IMG 5169-Lawrence,MA Yd, switch frog and guides.JPG</a></i></dd></dl><ul><li>The hinge takes the form of two metal strong-backs through bolted into the rails forming a sandwich about the rubber hinge —  the two plates squeezing a 1.5-2 inch big rubber pad over a foot long.</li></ul><dl><dd><i>See closeup of hinges: <a href="//commons.wikimedia.org/wiki/File:2014-0428-IMG_5170-Lawrence,MA_Yd,_switch_hinges.JPG" title="File:2014-0428-IMG 5170-Lawrence,MA Yd, switch hinges.JPG">File:2014-0428-IMG 5170-Lawrence,MA Yd, switch hinges.JPG</a></i></dd></dl>
<a href="//commons.wikimedia.org/wiki/User:Fabartus" title="User:Fabartus">Fabartus</a>
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