Show MOTORIZED MAST FOR NAVY BUMPS BLIMPS IS NEW INVENTION t. t Will Revolutionize Handling of Big Airships and Do Away With Big Ground Crews New A mobile moorIng mast mounted on heavy caterpillar tractors which Is exp expected to revolutionize handling big airships and do awa away wIth large ground crews to get such croft craft In and out ot of their hangars Is under construction for the United tinned tates navy and ond will be delivered early arly this summer nt at the Lakehurst N. N J. J naval air base for teats ts with the dirIgible Los Angeles It Is a 8 three legged stub affair only GO feet In height beIng similar to 10 the stub mast successfully used In Panama on the Los Angeles Angeles' recent Caribbean cruise except that the vat lot vatter tel ter was stationary The movable mast will be uSed butte both for tor mooring out purposes on the field and ond for dockIng and undock V Ing the aIrship In the huge shed that houses her ber The pro procedure will b be to moor the dirigible to the tle must mast which will then haul tier tug like Into the hangar Included In the stub moat lIla t equipment Is n a large tired pneumatic wheel to which the stern of the airship Is at tacked It nets acts us as a 8 caster allowing the ships ship's tab to swing with the wind but keeping It from moving mo either up or down To protect the airship against sudden side gusts ot of wind that might crush her ber against the hanga lines s will be attached to her sides J n points of vantage and secured to I tors running on rails lending Into th th hangar Not only Is the stub mast tar cheaper than the towerIng structures heretofore utIlIzed at Lakehurst the theFord theFord Ford airport In Detroit and else else- elsewhere where but It Is sold hy by I 1 WIllIam A. A Moffett chief ot of the in I I bureau of aeronautics and other experts ex ex- pert to be more satisfactory because It will keep the dIrIgIble near the ground where air treacherous currents ore are less than at an altitude ot of feet teet or more It If the movable cess It will mast proves a 8 success soc suc- solve one of the problems which greatest than air has bas hauled lighter lighter- te Chip travel experts In establishing alt nI on a 0 ground handling commercIal basle basic heretofore been heen having baving nn an almost prohibitive private factor for operation |