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...
Tag : Carco
The International-Harvester TD20 & TD20B tractors
By the end of the 1950s, International’s “jack of all trades” TD-18 was getting beyond further economical development. The TD-20 was the result. By Richard...
The Allis-Chalmers HD-11 tractor
Designed as a replacement for an earlier tractor, the Allis-Chalmers HD-11 was a very worthy successor and was in production for over 25 years. By...
The Allis-Chalmers HD-21 tractor
Developed directly from its model HD-20 (introduced 1951), the HD-21 featured among other things, one of the diesel engines from the recently acquired Buda Engine...
The Allis-Chalmer’s HD-14 tractor
The Allis-Chalmers HD-14 was introduced in 1939 and was broadly based on that company’s earlier and very successful Model L and LO gasoline powered crawlers....
Caterpillar’s Diesel Sixty: A landmark machine
The Diesel Sixty marked a significant milestone in the development history of the track type tractor in that it was the first such diesel engined...
The International-Harvester TD-18 tractor
International introduced the model TD-18 track type tractor in 1938, primarily aimed at the growing construction market. Initially known as the TD-65, the machine’s designation...