An Emergency Window Breaker With Turk’s Head Hand Grip


Turk's Head hand grips on an emergency window breaker.

Turk's Head hand grips on an emergency window breaker.

In the pre-airbag cars we used to drive, self-rescue was questionable, at best. If you were involved in a front end collision at speed, you were pretty broken up. If you ran off into deep water at highway speeds, the only difference was that after the big front end impact — the car sank. If the passenger compartment was fairly intact, the water pressure held the doors closed. If you waited to equalize the pressure you were on the bottom — with the car almost completely filled with water. Today people have crushing head-on collisions that total both cars — and climb out to stand around waiting for the E.M.S. and police. The problem comes when the doors jam shut. It is orders of magnitude worse if you are in a car that is on fire or under water. Car windows are engineered to be break resistant. How do you get out in those critical moments? You must break a window. Today’s project is a window breaker, a self-powered center punch which machinists use for layout work. It has a weight and springs inside. All you have to do is place the point and push. When the mechanism trips it hits with enough force to dent hardened steel — or break almost any glass. On non-tempered glass like a bottle, it may just poke a hole through the side. Tempered glass is made to shatter into small pieces when broken. If it doesn’t break the first time (rare), let off and push down again. I make these with hand grips made of knots that I think will appeal to the user. A loop to make holding more secure — and to act as a hanger. Because it is made to hang from the support on the sun visor, or the turn signal, it will be at hand in a wreck. This is much better than having it in the center console or glove box and having to dig it out — while the car burns. The decorative look is critical for many people – they don’t want their friends giving them funny looks after all.

On this one the loop is made from a single strand of paracord. The ends are temporarily seized to the shaft with constrictor knots. The overlaying Turk’s Heads provide the real security.

The major portion of the shaft is covered by a 15 Lead X 2 Bight Turk’s Head knot, doubled.

The end of the shaft is graced with a 5 Lead X 3 Bight Turk’s Head. It serves multiple purposes. It provides a larger, more comfortable, and more secure place to push. It dresses the end of the 2 Bight Turk’s Head and the join of the hand loop. Centering the two strands of the loop makes it hang better.

I give these to people I like enough to want to increase their survival chances in a wreck — and who I think will actually hang them up. They come with instructions and a piece of 150 Lb. test Dacron twine. No one has had to use them yet, but it makes me feel better to look out in the parking lot and see them hanging in the cars.

This idea is free to use and pass on. The increased survival rate is the prime aim. The peace of mind — knowing those you care about have an improved chance of survival is almost as good.

Let me know what you think. Thank you for stopping by, and come back again:
William

P.S.: I get my brass center punches when they are on sale at “Harbor Freight” — usually for less than three dollars. I have no affiliation with them and derive no income from this referral. Just trying to make it easier — the more this spreads, the more people live.

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Published in: on September 3, 2009 at 10:04 PM  Leave a Comment  
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