One of the earliest patents for an “Endless chain saw” comprising a chain of links carrying saw teeth was granted to Frederick L. Magaw of Flatlands, New York in 1883, apparently for the purpose of producing boards by stretching the chain between grooved drums. “Usually, each segment in a chain features small, sharp, cutting teeth. Each tooth takes the form of a folded tab of chromium-plated steel with a sharp angular or curved corner and two beveled cutting edges, one on the top plate and one on the side plate. Left-handed and right-handed teeth are alternated in the chain. Chains are made in varying pitch and gauge; the pitch of a chain is defined as half of the length spanned by any three consecutive rivets, while the gauge is the thickness of the drive link where it fits into the guide bar. The conventional”full complement” chain has one tooth for every two drive links. Lack of chain oil, or using an oil of incorrect viscosity, is a common source of damage to chainsaws, and tends to lead to rapid wear of the bar, or the chain seizing or coming off the bar.
The modern-day chainsaws we’re used to seeing are mainly utilised for tree cutting. Shockingly, the chainsaw was originally invented to assist in childbirth – yes, you read that correctly. The doctors’ chainsaw was used during symphysiotomies.
Three years later, in 1929, Stihl developed a gas-powered chainsaw version; however, Emil Lerp, founder of Dolmar chainsaw company, had already begun manufacturing gas-powered chainsaws in 1927. Although Stihl and Dolmar both created chainsaws around the same time, Andreas Stihl is credited as the person who invented the mobile and motorized chainsaw. If you want to see a list of the top chainsaws you can buy today, check out my best chainsaw reviews page.
when was chainsaw invented Related Question:
When did they start using chainsaws for wood?
In the 1920s, several companies began manufacturing chainsaws to be used in professional forestry work. Today, we have the modern chainsaw that any homeowner can purchase and use to perform woodcutting tasks.
Why was the original chainsaw invented?
Two doctors invented the chainsaw in 1780 to make the removal of pelvic bone easier and less time-consuming during childbirth. It was powered by a hand crank and looked like a modern-day kitchen knife with little teeth on a chain that wound in an oval.
What was the original invention for a chainsaw?
In the late 18th century, 2 Scottish doctors, John Aitken and James Jeffray, developed a prototype of the chainsaw—familiar today in the timber industry—for symphysiotomy and the excision of diseased bone. The design of the chainsaw was based on a watch chain with teeth that moved through the use of a hand-crank.
Was the chainsaw invented for childbirth?
Yes, the first chainsaw really was invented to be used in childbirth – though thankfully it was a far cry from the electric-powered monsters people cut down trees with today. The prototype was developed by two Scottish doctors – John Aitken and James Jeffray – in the late 18th century, for the process of symphysiotomy.
Were chainsaws used to deliver babies?
The doctors’ chainsaw was used during symphysiotomies. This was a procedure carried out on pregnant women during birth, in place of a caesarian section which is now the modern practice.
How does a chainsaw work?
Instead of a rotating chain, they have a powered, reciprocating blade (one that moves back and forth) mounted on top of a stationary blade. 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.
What is a Symphysiotomy operation?
Symphysiotomy is an operation that is done to increase the size of the pelvic outlet to permit vaginal delivery of a baby. The procedure involves surgically dividing, under local anaesthesia, the cartilage of the symphysis pubis. The skin incision is 1.5–3 cm long.
What’s the best angle to sharpen a chainsaw chain?
Always file at right angles to the guide rail. The right sharpening angle depends on the saw chain and the wood that you want to cut. The sharpening angle will generally be between 25° and 35° – the harder the wood, the greater the angle.
What is the biggest chainsaw made?
For the largest, toughest and most demanding jobs, professionals can find the performance they need in the MS 881 chainsaw. With its updated engine design and up to 41” guide bar length, the MS 881 is the largest, most powerful saw in the STIHL lineup.
Can a chainsaw cut through bone?
Bones may be slightly tougher, but they are rigid and a chainsaw will likely be able to cut through them without much problem – though it will probably dull the blade more than wood.
What fuel does a chainsaw use?
Unleaded gasoline with a minimum octane rating of 89 is recommended. A lower octane can cause some issues, such as increased engine temperature, increased piston seizures, and engine damage. Stihl offers 2-cycle oils made especially for Stihl chainsaws. Premium quality 2-cycle fuels provide protection for your engine.
Can a chainsaw cut through screws?
Commercial or Professional-use Chainsaws: In addition to having a powerful engine, these heavy-duty chainsaws have durable and reinforced teeth that allow you to cut through nails and other metal particles stuck inside the wood.
How much does chainsaw cost?
You can find mid-range saws as well from $200 to $400 for activities like cutting lots of firewood. The majority of shoppers should be able to find a high quality chainsaw to satisfy their needs in the $100 to $200 range.
Can you cut wet wood with a chainsaw?
Can you cut wet wood with a chainsaw? Yes, you can cut the wet wood with a chainsaw. Besides, there is a misconception that wet wood can impact the chainsaw bar and chain. But actually, the damp wood will not dull the chainsaw any faster than using it on other types of wood.
Can your hips be too narrow for childbirth?
Baby’s size The baby might be slightly wider than the hips, and if so, this could potentially slow down delivery. Just the same, a woman with a narrow-shaped pelvis — which typically makes it more difficult to deliver — may have a smoother birth due to delivering a smaller baby.