Finny 5" with Safer Tips

5-inch scissor with safety tips I could reiterate how well the Finny cuts - and goes on cutting - yarns and fibres of many types. However, if you got this far you will know all about that, so let me tell you about the safety tips on this scissor.

Some years ago a friend at ICI Fibres called me in to help in the design of a safer scissor. The problem was that the operators in the plant were attempting a cutting operation on their high speed nylon line, while the yarn was running at full speed (about 60 mph) through the machine. Each line of fibre is threaded up through the machine using a vacuum gun to catch the running yarn and lead it to waste, while the operator leads the running yarn over pulleys, through guides, around tensioners etc. When he wants the running yarn to jump though a new device the operator puts the gun behind the device, cuts in front of it, and the travelling yarn (if the cut is a clean one) goes through the hole and back into the gun. Just like magic!
Sometimes it was necessary that the hand holding the vacuum gun, was really really close to the scissors held in the other hand which had to make the cut at precisely the right moment and then rapidly be moved out of the way.

What the accident book showed was many surgery visits by operators who had held their "vacuum" hand just a bit too close to the scissors when making the vital cut, and had snipped a bit of finger or hand with the supposedly blunt tips of the scissors, as well as cutting the yarn as intended. rounded and blunted blade tips
Since noone made a scissor that didn't nip at the tip, we experimented with various scissors and various methods of making the tips safer, and came to the conclusion that if we ground off the sharp edges to leave a blunted and radiussed area at the tips of a Finny 5", then it really was much harder to cut yourself with the scissor than before.

For many years ICI Fibres and Courtaulds have preferred that their machine workers use Finny scissors modified in this way. "Finny" because the durability of the ice-tempered and fully ground stainless steel blades, combined with a real screw for adjustable friction, meant that the scissors were not wearing out or being discarded for bad cuts, while the "safety tips" meant the operators stayed on the job and out of the first aid room!

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