Andre Hartford friction disk shock absorber under Stafford No4. Signal Box British Rail Standard 4" centres lever frame as used to dampen mechanical shock and protect the electric lever locks. Photo taken 8th August 2015 shortly before the closure of the box.
<a href="//commons.wikimedia.org/w/index.php?title=User:Staffordshocker&amp;action=edit&amp;redlink=1" class="new" title="User:Staffordshocker (page does not exist)">Staffordshocker</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>