Handcuffs have unusual and contradictory design requirements: They must serve one human, and at the same time thwart another.
For those who wield handcuffs, they must be light and efficient to put on and remove from a perpetrator. For the unfortunate wearer, the devices must restrain resistant wrists whether they happen to be thick or thin. And cuffs can't succumb to cleverness or brute force escape attempts.
Modern handcuffs are great for accomplishing all of the above. But it took more than 100 years to perfect the design.
Before the mid-19th century, a number of somewhat brutal methods failed on various points.By Alex Lippa Close-up of plastic card in Massachusetts. In England,When the stone sits in the oil painting reproduction, one painful device involved a metal apparatus in the shape of a figure eight. Only the most violent criminals were subjected to the shackles because they allowed minimal movement and injured the wrists of the wearer—something officers at the time saw as a bonus. A padlock design became obsolete when Harry Houdini showed that if you banged against something hard enough, the internal pin would release. In the United States, the handcuff precursor was a single metal loop welded to a larger oval. The first loop was for both prisoner's hands and the second was for the officer to keep hold of: not comfy for anyone.
But the most tortuous restraining device of the time was certainly the twister, which was a chain-link loop with a metal T attached. The chain slipped over both hands and the T was twisted until the law-breaking arms were painfully bound.
Although they've gotten lighter and thinner over time,These girls have never had a oil painting supplies in their lives! the standard cuffs still mostly look like this. Today there's just more variation baked in: special special cuffs for people with larger and smaller wrists, and colored versions denoting inmates of different cellblocks or with health conditions. There are also high security varieties that don't accept the standard key. Hinge cuffs are a riff on the original, but their rigid folding design suspends motion more aggressively.
There are also disposables, and you've probably seen them on the news. They were first introduced in the 1960s and look like cable ties. They're great for riots or other situations where officers need to secure lots of people quickly. Short-term handcuffs are one step up from disposables.Demand for allergy kidney stone could rise earlier than normal this year. They're mostly made with Nylon 6 and serve a similar purpose, but can be reused and unlocked with a standard handcuff key.
As for the future, says Gill, "Who knows who's going to come up with a better mousetrap." We'll find out soon. By the end of this year, the National Institute of Justice is updating requirements for cuffs with increased strength and performance targets, which hasn't happened since the 1970s. The new standards will also include ankle and disposable restraints for the first time. Hopefully we'll soon see even more efficient cuffs that cause as little pain as possible. Unless of course that's what you're into.Polycore porcelain tiles are manufactured as a single sheet,
For those who wield handcuffs, they must be light and efficient to put on and remove from a perpetrator. For the unfortunate wearer, the devices must restrain resistant wrists whether they happen to be thick or thin. And cuffs can't succumb to cleverness or brute force escape attempts.
Modern handcuffs are great for accomplishing all of the above. But it took more than 100 years to perfect the design.
Before the mid-19th century, a number of somewhat brutal methods failed on various points.By Alex Lippa Close-up of plastic card in Massachusetts. In England,When the stone sits in the oil painting reproduction, one painful device involved a metal apparatus in the shape of a figure eight. Only the most violent criminals were subjected to the shackles because they allowed minimal movement and injured the wrists of the wearer—something officers at the time saw as a bonus. A padlock design became obsolete when Harry Houdini showed that if you banged against something hard enough, the internal pin would release. In the United States, the handcuff precursor was a single metal loop welded to a larger oval. The first loop was for both prisoner's hands and the second was for the officer to keep hold of: not comfy for anyone.
But the most tortuous restraining device of the time was certainly the twister, which was a chain-link loop with a metal T attached. The chain slipped over both hands and the T was twisted until the law-breaking arms were painfully bound.
Although they've gotten lighter and thinner over time,These girls have never had a oil painting supplies in their lives! the standard cuffs still mostly look like this. Today there's just more variation baked in: special special cuffs for people with larger and smaller wrists, and colored versions denoting inmates of different cellblocks or with health conditions. There are also high security varieties that don't accept the standard key. Hinge cuffs are a riff on the original, but their rigid folding design suspends motion more aggressively.
There are also disposables, and you've probably seen them on the news. They were first introduced in the 1960s and look like cable ties. They're great for riots or other situations where officers need to secure lots of people quickly. Short-term handcuffs are one step up from disposables.Demand for allergy kidney stone could rise earlier than normal this year. They're mostly made with Nylon 6 and serve a similar purpose, but can be reused and unlocked with a standard handcuff key.
As for the future, says Gill, "Who knows who's going to come up with a better mousetrap." We'll find out soon. By the end of this year, the National Institute of Justice is updating requirements for cuffs with increased strength and performance targets, which hasn't happened since the 1970s. The new standards will also include ankle and disposable restraints for the first time. Hopefully we'll soon see even more efficient cuffs that cause as little pain as possible. Unless of course that's what you're into.Polycore porcelain tiles are manufactured as a single sheet,
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