Tag : Dryden Construction
The LeTourneau Tournacranes
While a great many of LeTourneau’s inventions were designed for earthmoving purposes, some of his creations had very practical applications elsewhere. By RICHARD CAMPBELL There...
The Allis-Chalmers HD-19 tractor
Allis-Chalmers was the first heavy machinery builder to enter the big track-type tractor development race immediately following World War II. Richard Campbell looks at its...
The Allis-Chalmers HD-20 tractor
In production for just three years, the HD-20 was the stepping stone between the powerful HD-19 and the very successful HD-21. RICHARD CAMPBELL delves into...
The IH TD-25 tractor
Following on from its very successful model TD-24, International Harvester introduced its successor, the TD-25 in 1959. Rather than being a scaled up version of...