Tag : Allis-Chalmers

Classic Machines Tractors

The Allis-Chalmers HD-20, last of A-C’s GM-powered Crawlers

Contractor Magazine
A big tractor in its day, The Allis-Chalmers HD-20 was another part of the power struggle that took place between Allis-Chalmers and International-Harvester during the
Forgotten companies

Forgotten companies: Carco

Charles Fairbairn
Many of the readership will identify the name Carco as being associated with logging winches and forestry equipment. However, Carco’s roots go much further back
Classic Machines Tractors

Classic Machines: The Allis-Chalmers HD-19 revisited

Charles Fairbairn
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
Contractor Scrapers

Evolution of the Single Axle Scraper

Charles Fairbairn
Grand-daddy of all the scrapers (apart from the horse-drawn, wheel-less Fresno type), the single axle scraper has a niche in the history of earthmoving and
Classic Machines Scrapers

A more modern look at the Allis-Chalmers TS-200 motorscraper

Gill Prentice
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,
Classic Machines Forgotten companies

Forgotten companies: Tractomotive

Charles Fairbairn
An exceptionally versatile tool, the wheel loader has found a use in all phases of construction as well as quarry and aggregate production, material recycling,
Classic Machines

Classic Machines: Birth of the Articulated Dump Truck

Charles Fairbairn
Developed to a greater potential during the late 1960s with the advent of all-wheel drive, the articulated dump track has actually been around for a
Classic Machines Tractors

Classic Machines: The Vickers VR180 tractor

Charles Fairbairn
As a result of their experience manufacturing tanks during WWII, Vickers-Armstrong of Newcastle, England decided to build a track-type tractor to take on the Americans.  
Classic Machines Loaders

Classic Machines: The Caterpillar 922 wheel loader

Charles Fairbairn
Introduced in 1960, the No.922 Traxcavator was the second Caterpillar wheel loader to be released for sale (the first was the No. 944) and proved