Yes, zip screws are actually motors. It is the simplest type of motor. It is also a linear actuator, which is an actuator. An actuator is a type of motor for moving stuff. Hence, a screw is a motor. A linear actuator converts circular motion into forward motion in a straight line. A screw has a grooved head and a shaft with a helical external groove.
There are loads of types of simple linear actuators. Most have a single indentation in the head and can be driven into a wall or other material using a straight screwdriver. Others have a two grooves at right angles to each other. These can be driven by either a normal screwdriver, but more effectively by a special tool called a phillips head screwdriver, named after a man named Henry F Phillips.
It is surprising how we take the crosshead screw for granted and never give a thought to the man who patented it. Born in Portland, Oregon, Phillips bought the rights to the device from its original inventor, John P. Thompson. Phillips tweaked the design and got the patent for it.
One of Phillips' first customers, in 1936, was General Motors, who put it to work on its Cadillac assembly lines. He sold the patents to Ford Motor Company in 1945 for approximately $5 million. Phillips died in 1958.
Now, while a phillips head screw can be set with a straight, ordinary screwdriver, it doesn't work very well the other way around. A phillips head screwdriver is useless for screwing a single-grooved screw. This is because it can't get a grip on the single groove. Most people give up and use a small coin, like a dime or a British half penny if they have one lying around. A table knife also works in a pinch if you are desperate.
Another similar tool is a bolt. This has external grooves only part way up the shaft. It performs a similar job to the screw. A bolt is secured by a nut, which is threaded internally. A nut winds around the external threads of the bolt until the load is secured.
A screw, on the other hand, does not require a nut to hold it in place. Say you are going to hang a painting. First, a hole is drilled, for example, in a wall. Then a rawl plug, a screw-sized plastic is fitted into the resulting hole. The screw is then driven in, first by hand, then by screwdriver, but not all the way in. The painting is hung onto the part of the screw that is sticking out of the wall.
Zip screws are used mainly for sheet metal (the kind used for ducting) and guttering. These have an especially sharp point that is easy to pierce through thin, soft metal. It gets its name because it zips straight through. If, on the other hand, you want to work with a harder or thicker sheet of metal, then you would use a TEK screw.
There are loads of types of simple linear actuators. Most have a single indentation in the head and can be driven into a wall or other material using a straight screwdriver. Others have a two grooves at right angles to each other. These can be driven by either a normal screwdriver, but more effectively by a special tool called a phillips head screwdriver, named after a man named Henry F Phillips.
It is surprising how we take the crosshead screw for granted and never give a thought to the man who patented it. Born in Portland, Oregon, Phillips bought the rights to the device from its original inventor, John P. Thompson. Phillips tweaked the design and got the patent for it.
One of Phillips' first customers, in 1936, was General Motors, who put it to work on its Cadillac assembly lines. He sold the patents to Ford Motor Company in 1945 for approximately $5 million. Phillips died in 1958.
Now, while a phillips head screw can be set with a straight, ordinary screwdriver, it doesn't work very well the other way around. A phillips head screwdriver is useless for screwing a single-grooved screw. This is because it can't get a grip on the single groove. Most people give up and use a small coin, like a dime or a British half penny if they have one lying around. A table knife also works in a pinch if you are desperate.
Another similar tool is a bolt. This has external grooves only part way up the shaft. It performs a similar job to the screw. A bolt is secured by a nut, which is threaded internally. A nut winds around the external threads of the bolt until the load is secured.
A screw, on the other hand, does not require a nut to hold it in place. Say you are going to hang a painting. First, a hole is drilled, for example, in a wall. Then a rawl plug, a screw-sized plastic is fitted into the resulting hole. The screw is then driven in, first by hand, then by screwdriver, but not all the way in. The painting is hung onto the part of the screw that is sticking out of the wall.
Zip screws are used mainly for sheet metal (the kind used for ducting) and guttering. These have an especially sharp point that is easy to pierce through thin, soft metal. It gets its name because it zips straight through. If, on the other hand, you want to work with a harder or thicker sheet of metal, then you would use a TEK screw.
About the Author:
If you need a source for zip screws pay a visit to the home pages online at www.allpointsfasteners.com today. You can see descriptions at http://www.allpointsfasteners.com now.
0 التعليقات:
إرسال تعليق