The Chainsaw was Invented to Help in Childbirth. Seriously.

Motor turns a disc at the bottom. Bens, Chain Saw Corporation. The reservoir is normally large enough to provide sufficient chain oil between refuelling. Chainsaws were originally invented for cutting a woman's pelvis if she was having difficulty giving birth.

Step by step, it works like this:. The History of Hardware Tools. Then the Portland factory that Wolf had contracted with to make his saws was called upon to produce more critical war materials.

Garden tools. The go-to source for comic book and superhero movie fans. Find Other Articles: The clutch solves this problem. It weighed 80 pounds, broke down with depressing regularity, and probably could only be used in an upright position; so nothing came of this.

The chain saw--a Scottish invention.

Everyone has their own rationale for why they prefer one brand over the other, but at the end of the day, both brands have several high-quality, professional-grade models that perform well in the woods. McCulloch in North America started to produce chainsaws in The early models were heavy, two-person devices with long bars.

Otherwise the chain might derail. Today's chainsaws use a number of safety features to protect the operator. Engines were made of cast iron and they weighed hundreds of pounds. In , Stihl patented the first gasoline-powered chainsaw called the tree-felling machine. Before renting, be sure to ask how many hours each saw has clocked and how old each one is. The small nose reduces the kickback effect. We're sure you're envisioning those loud things that can hack up trees in seconds, but thankfully this one is a little bit less scary and looks more like a medical tool.

That shows much more detail of the air-cooling mechanism and the gearbox, but as with all cutaways it's a little harder to follow Centrifugal clutch Let's talk a bit more about the clutch.

A clear sign of a blunt chain are vibrations of the saw.

This entry was posted in Uncategorized and tagged children , medicine , qi , science , weirdness. Jonsered is a Swedish brand and produces products like chainsaws, trimmers, lawn mowers, garden tractors and accessories.

The chain saw--a Scottish invention.

In some areas the skidder chainsaw crews have been replaced by the feller buncher and harvester. If you keep up with the recommended maintenance and necessary repairs, either brand will last you for many years.

As the electric motor whirrs into action, a crank pulls the moving blade past the stationary one and the cutter chops its way through your hedge. Stationary blade helps to cut branches as the moving blade shifts past it. In this communication he translated Moreau's paper of It would be hard to spend an entire day chopping your way through a forest with a handsaw, but you could certainly do that with a chainsaw.

National Institute for Occupational Safety and Health. Latest Articles.

We apologize for the inconvenience. The risks associated with chainsaw use mean that protective clothing such as chainsaw boots , chainsaw trousers and hearing protectors are normally worn while operating them, and many jurisdictions require that operators be certified or licensed to work with chainsaws.

History Glossary Wood lumber. Joe Wolf invented it for loggers, but they wanted nothing to do with his electric saw.