A year before that, he had started the “ Phillips Screw Company” ( 🙂 ).
Phillips, who bought the design/patent in 1935 and refined it (the final version patent being US. But he was probably as good a salesman and capitalist as I am, so he couldn’t get anyone to produce screws and screwdrivers with this patent. In 1933 he also patent-protected a matching screwdriver. Thompson invented (and patented under US Pat. How did they come to be, and what is the main problem with them?Ī man named John P. You might have heard of these, they are also known as “cross-recess”, “cross-head”, or “cross-point”. 🙂 Standards, specifications and dimensions are discussed in the 3rd chapter. Just as little as necessary to understand the current chaos with cross-head screwdrivers. “ Not all the heroes wear capes” 🙂 – BikeGremlin shower thoughts Any additions or corrections are welcome. Yet, take this article as: “to the best of my knowledge”. Took me a lot of time to figure this out and get all the data. The rest of this post is a rather detailed explanation of the crossed-head screwdriver topic, but with no final answer for now, just a few practical examples. Will do my best to explain it in this article.īefore theory, here is my practical demonstration of the problem and how the screwdriver shown above solves it:
The Bad news: it’s not simple figuring those out, and trying one out is often the only really safe way to confirm eventually.The Good news: yes, there are more than one manufacturer (and model) of good quality cross-head screwdrivers (some more recommendations are in Chapter 4).Wera Kraftform Stainless 3350 PH 2 Wera Kraftform Stainless 3350 PH 2 – Amazon affiliate link Picture 1ĭo you have to buy this one, or are there other good ones? Well, I’ve got some good and some bad news – which one do you want to read first? 🙂 Still, for those who just want to know which screwdriver has worked very well for me, on both the American Phillips and on Japanese (bicycle and motorcycle) cross-headed screws, this is it (providing Amazon affiliate links for screwdriver pictures and price-comparison): Those who wish to know how I chose this screwdriver can read the following chapters. In other words: how can I tell, before trying (and buying), if a screwdriver will work properly with a bicycle, motorcycle and other cross-head screws? The goal of this article (and my research for it) was to help myself find a screwdriver that fits well and doesn’t cam-out. How can I find a good Phillips/JIS screwdriver?.Standards of popular cross-tipped screwdrivers 3.1.The difference between Phillips and JIS screwdrivers JIS (Japanese Industrial Standard) screwdrivers 2.3. In a separate article, I explained all the hex-bit size standards and types. Then comes some history and standards explanation (including JIS) to provide a universal way of recognizing the good, well-fitting screwdrivers – and clarify what it’s all about.
#POZIDRIV SCREWDRIVER HOW TO#
In this post, I’ll explain how to find a cross-head (Phillips) screwdriver that doesn’t slip out when unscrewing a tight screw. If you’ve ever fixed bicycles, motorcycles, or any appliance with cross-head screws, you know how frustrating it gets when your screwdriver keeps slipping out, especially when trying to loosen a stuck screw.
0 kommentar(er)
