The shackle means in FIG 7 correspond to those of FIG 4; the warning device is actuated if {TAIL ~ a predetermined relative displacement} of {HEAD ~ the lever} 53 and the piston 55 and the shackle ring 56 is reached 
The shackle means in FIG 7 correspond to those of FIG 4 ; the warning device is actuated if { TAIL ~ a predetermined relative displacement } of { HEAD ~ the lever } 53 and the piston 55 and the shackle ring 56 is reached
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH