Although childbirth remains a difficult, often stressful experience for mothers, the advent of opioid medications for labor pain relief and the use of appropriate sanitation methods has made childbirth far safer for mothers than was possible during previous periods in history. Although childbirth remains a difficult, often stressful experience for mothers, the advent of opioid medications for labor pain relief-such as morphine, fentanyl, nalbuphine, and butorphanol-and the use of appropriate sanitation methods, has made childbirth far safer for mothers than was possible during previous periods in history. In the article, Dr. John L. Richmond describes how, after many hours of the expectant mother being in labor, he could see she was close to death, requiring that he make a decision quickly to save the woman’s life.2,3.
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.
The original chainsaw looked more like a modern-day kitchen knife than what we would call a chainsaw nowadays. In the 1780s, in a bid to make the removal of the pelvic bone easier and less time-consuming two doctors named John Aitken and James Jeffray invented the chainsaw. In 1883, a patent for a chainsaw for cutting boards was passed and then subsequently more and more chainsaws developed.
The original chainsaw was invented and used by two Scottish doctors in the 1780s. Interestingly, it’s also the first Stihl chainsaw because the first wood chainsaw was invented by Andreas Stihl – the founder of the Stihl chainsaw company. Stihl also claims to have invented the first chainsaw for use by one person in 1950 – check out all the Stihl chainsaw years made for more info.
chainsaw how to use Related Question:
How do you cut with a chain saw?
Start cutting from the top of the log, applying light pressure to the chainsaw. The chainsaw should do the work, and the teeth should pull the chain bar into the wood. Don’t let the guide bar nose or chain touch the ground or other objects. This could cause a kickback or dull the chain.
What should you not do with a chainsaw?
Don’t Cut With Improper Blade Tension A overly loose or tight chain also wears out the drive sprocket and causes rapid chain and bar wear. To determine if your chain is properly tensioned, pull up on the chain. The drive links should still be in the bar groove. If the links come out of the bar, the chain is too loose.
Are chainsaws easy to use?
If you need to do regular maintenance in your backyard, perhaps removing branches here and there or cutting down small trees, then a small gas-powered chainsaw with a 16-to-18-inch bar is an irreplaceable tool. Due to the small weight and size of the chainsaws in that class, they are really easy to use.
How do most chainsaw accidents happen?
The most common hazards associated with chainsaws are injuries caused by kickback, pushback, and pull-in. Kickback is the most common and poses the greatest hazard. Kickback occurs when the rotating chain is stopped suddenly by contact with a more solid area throwing the saw rapidly backward toward the operator.
Should you run a chainsaw at full throttle?
Engine Protection Generally, two-stroke chainsaw engines are built to conveniently run at full throttle without an engine breakdown. Therefore, running at any throttle speed below the full throttle is not advised.
Can you cut with both sides of a chainsaw?
A chainsaw is one of the most versatile tools you can own, but it cuts both wood and flesh equally well.
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.
What size chainsaw do I need to cut firewood?
Many homeowners find that a 14- to 16-inch chainsaw is a good length for them. That’s long enough to limb-up trees, cut down small trees, and cut most firewood, but it’s also short enough that it’s easy to control the saw.
Are electric chainsaws safer?
Safer to Use Electric chainsaws have several features that make them safer for casual users than their gas-powered counterparts: Lower chain speeds. Chains that run only when you’re actively cutting with your saw. Bars that measure no longer than 18 inches.
What should you not do when a tree falls off?
When cutting up a felled tree, avoid touching the ground with the chain because even a brief encounter will severely dull the cutting teeth on your chain saw. If possible, cut partially through the tree and then rotate it to cut the rest of the way through.
What is the most common chainsaw injury?
More than 36 percent were injuries to the legs and knees. Approximately 40 percent of all chainsaw accidents occur to the legs and well over 35 percent occur to the left hand and wrist.
How common are chainsaw accidents?
They can also quickly cause severe injury or death. According to the Centers for Disease Control and Prevention (CDC), approximately 36,000 people are injured by chainsaws annually. Medical costs for chainsaw injuries based on these facts amount to about 350 million dollars per year.
Do you need to break in a chainsaw?
Typically we recommend a break in period of 6-10 tanks of fuel. During this period the engine should not be allowed to run at high RPMs for extended periods of time.
How long should you run a chainsaw?
Depending on the type and usage, you can expect a gas Chainsaw to run between 15 and 40 min before you have to fill it up again. Most battery-powered chainsaws have a run time of up to 2 hours, but there are high-capacity power packs that will last much longer.
What causes chainsaw kickback?
There are two circumstances that can cause kickback when using a chain saw. The first occurs when the moving chain at the tip or the nose of the guide bar strikes an object. The second situation is when the wood closes in, pinching the saw chain in the middle of the cut.