Washington Iron Works pioneered many, many machines for the timber industry. They built multiple-drum logging engines (steam-powered machines) as early as 1890, and between 1910 and 1920 built gasoline-powered logging trucks for work around Seattle. They built blocks and rigging and even designed an built a geared locomotive (similar to a Shay or Willamette). They built giant steel tower-skidders in the 1930's (Similar to the Lidgerwoods) and big electric yarding engines for Long-Bell and Weyerhaeuser- rail mounted monsters they were.
In the 1960's Washington developed hydraulics and though primitive the Washington TL-5H was one of the very first purpose-built hydraulic log loaders ever put into regular production.
The 1980's were a time of great turmoil in the timber industry, but Washington Iron Works pushed forward with this big, tilting all-terrain buncher anyway. I was lucky to know a few men on the design team and this thing was way, way ahead of it's time indeed. Only 2 were built under the Washington brand, and the company was completely bankrupt by 1986.
After the bankruptcy the plans and rights for this buncher were purchase by Allied of Portland, Oregon and more machines were built under the Allied name. The last one built was donated to the Camp 18 museum recently and can be seen there today. All the other (and older) machines have been scrapped, so it is the last one in existence.
I have been lucky enough to spend some time around these (Allied) machines, and have run them on several different occasions. I have enough pics for a dedicated thread if you guys are interested enough?
Here's the second Washington machine on display at the OLC Eugene Log Show in the mid 1980's.