Mobile Gantry Crane

Made from  aluminum  extension ladders . used  to  "trap" the  airship by  using  lines  from  the winch hook   going  around  the airship and hooking into  a  trailer  or other heavy object  under  the  airship .  The  winch is tightened up   to  just  hold the airship  in  a "bird cage" of lines .
 All 100 % mobile,  brakes  down   just like  and  extension ladder would  and  transports  by ladder rack  or  trailer   The  ladder  receiver  and  winch  mounts  to  the  truck  bed.     

The  main ladder is a 40 foot  extension ladder  the the horizontal  arm  is a 16 foot  extension ladder  section.
  Using  U channel  aluminum  to  reinforce  the area of ladder overlap  when  fully  extended  By  running  all thread  rod  through  the ladder rungs (  2 in  each section)  and  bolting  the U channels on .  The U channel  spans  both  sections of ladder and still lets  the  ladder slide togather   by  removing  the  upper sections   2  thread rods .  The  rung catch  works  as normal so its no problem  installing  the rods , or  telescoping the ladder .
  The u channel  also  provides  a sturdy  area for  the  guy  wire attachment points.  
 The  horizontal  ladder is  made to pivot  by  using  2 triangle  plates  attached to each side of  the  40 footer again using  the  all thread rod through the rung  method  to  bolt  the plates  on  , with  the point of the triangle  used for the  pivot point  for the  horizontal  section  again by  all thread rod  through  the first  rung .   
The  horizontal  section  is guy wired  to the upper most  section of ladder  where  the  main guys  attach  and  again  in  the middle   and  down  so  the  section  cant  bow  upward under load . 
    With  the ladder  all collapsed in its  stowed condition,  it is  stood up  in  its  truck bed receiver  and pinned to  hold itself vertical .  The  lower guys  are  deployed  and  brought to  tension by  turnbuckles on  the out riggers .  The ladder  is extended  by  the normal  rope  and pulley  system  .  Fully extended   the upper  guys  are  deployed  and  brought into  tension.  Then  the  horizontal arm  can be raised using  the winch. The ladder is  climbed and  the 2 mid section  all thread rods  and  installed  and tightened,  then  the  upper support guys to the horizontal arm are hooked up . Setup complete.   I think  this Jib Boom Gantry crane  will be able to  lift  200  pounds  ( me) with  no problem . However it is not  designed to  lift  heavy loads  but  rather  just put  lines in  tension  around  the  ship.  However  it would be  a plus  to  be  able  to lift me  in a harness   to get  to  areas on  the inflated ship .