The Allis-Chalmers HD-19 revisited
Allis-Chalmers led the charge for a bigger, higher horsepower track type tractor following World War Two. The resulting model HD-19 was a breakthrough in many...
Tag : LeTourneau
Caterpillar’s D7 tractor -‘the early years’
The iconic Caterpillar D7 has been in continuous production in various versions since 1935. It has fought in three major conflicts – WWII, Korea &...
Forgotten companies: Bucyrus-Erie
The Bucyrus-Erie Company was world famous for its range of face shovels, draglines, cranes and other mining and quarry equipment. However, it also made a...
A more modern look at the Allis-Chalmers TS-200 motorscraper
Although it was not an original Allis-Chalmers design, the model TS-200 motorscraper paved the way for a far more successful machine in Allis’ product line,...
Forgotten companies: Isaacson
Back in time when the track type tractor was still considered a new tool for earthmoving, there were dozens of companies offering attachments to outfit...
The Allis-Chalmers TS460 motor scraper
Allis-Chalmers was always an innovator when it came to construction equipment although not all of its products were instant successes, its TS460 motor scraper being...
Caterpillar’s DW21 scraper revisited
Born of necessity, the Caterpillar DW21, the great granddaddy of all Caterpillar 2-axle scrapers, went on to become a very successful scraper for Cat and...
The Wabco 229 Series – End of a long lineage
In a successful attempt to keep up with the competition, Wabco finally incorporated full hydraulic controls into the Model C Tournapull. By Richard Campbell. Starting...
RG Le Tourneau’s L-series Pacemaker
Le Tourneau was a visionary machine designer. His innovative electric wheel, developed for the L-series Pacemaker motorscraper, is now used in most mining trucks. Only...
LeTourneau’s Model D Tournapull
The Le Tourneau-Westinghouse D Tournapull was one innovative machine, says Richard Campbell. Descended from the original Le Tourneau ‘D’ Pull which dated back to 1946 and...