Phillips Head Screw and Other Improvements
How did Phillips head get its name?
Henry Frank Phillips (June 4, 1889 – April 13, 1958) was an American businessman from Portland, Oregon. The Phillips-head ("crosshead") screw and screwdriver are named after him.
Why is it called a flat head screwdriver?
It's known as standard because it was the original form of driver head. A flathead would refer to the geometry of a screw head itself, and a flatheaded screw could actually have any type of driving head on it (slotted, Phillips, square, etc.).
What's the real name for a Phillips screwdriver?
Also known as cross-head screwdrivers, Phillips screwdrivers are one of the most common types. But what is a Phillips head screwdriver? These tools are designed to fit screws with Phillips heads, which have a cross-shaped recess - hence the alternative name of cross screwdriver.
Who invented the Phillips head?
The Phillips screw and driver, originally invented by Portlander John P. Thompson, dramatically increased the speed of manufacturing and made the Phillips screwdriver a necessity in every toolbox.
41 related questions foundWhy are Phillips screws still used?
They are less prone to damage and stripping, as the Phillips screws cam out when excess torque is applied. They don't allow the screwdriver to slip out sideways and injure the operator.
When did cross head screws come out?
To counteract these disadvantages, J. P. Thompson patented a screw with a cross recess in 1933. He sold the patent to the Phillips Screw Company. It improved the profile and introduced the screw to the market in 1936/37.
Who invented the screw?
Although the Pythagorean philosopher Archytas of Tarentum (5th century bc) is the alleged inventor of the screw, the exact date of its first appearance as a useful mechanical device is obscure.
What is a Turnscrew?
Definition of turnscrew
: a device for turning screws : screwdriver, wrench.
What is the function of Phillips head screwdriver?
A Phillips screwdriver has a head with pointed edges in the shape of a cross, which fits neatly into the cross slots of a Phillips screw. Phillips screwdrivers are available in five different sizes, from zero to four. If you don't use the right size, you can easily strip a Phillips screw, making it difficult to remove.
Why is Phillips head flat?
Since a standard flat-head didn't fit cleanly into the head of a screw, Phillips designed a different screwdriver to fit his new invention. This new screwdriver came to be known as the Phillips screwdriver and completed what is now known as the Phillips system.
What is star screw driver?
A star screwdriver is a handheld tool with a six sided, star shaped bit. It is designed to interact specifically with star screw heads that are sized to match corresponding bits exactly.
What does SL mean on screwdriver?
Usually, the electronic device manufacturers nowadays use the screws of special star-shaped forms, patented as Torx and Pentalobe. We will have a closer look at the most widely used screw types and screwdrivers fitting them. Screw types.
What is slotted screw?
Slotted screws are the simplest type of screw, consisting of a single slot at the head of the screw. Generally not in heavy use in the US, but they are still around.
What is a Robertson screw head?
A Robertson screw, also known as a square screw or Scrulox, is a type of screw with a square-shaped socket in the screw head and a corresponding square protrusion on the tool. Both the tool and socket have a slight taper.
What are the star shaped screws called?
Called Torx, 6 point, and star, Torx are a 6 pointed star shaped screwdriver. Originally designed in the 60's to outperform hex screws, Torx is a trademarked name for a screwdriver that fits Torx screws, commonly seen in sizes Torx 6 to Torx 40 (or T6 to T40).
What is the standard screwdriver called?
The tool used to drive a slotted screw head is called a standard, common blade, flat-blade, slot-head, straight, flat, flat-tip, or "flat-head" screwdriver. This last usage can be confusing, because the term flat-head also describes a screw with a flat top, designed to install in a countersunk hole.
What do you call a screw with a flat end?
Heads are angled -- flat, round or oval. Oval-head screws, also called “pan heads”, can be seen on the surface, but are not as highly visible as round-head screws, used in decorative applications, such as furniture design.
Who invented threading?
The screw thread is believed to have been invented around 400 BCE, by Archytas of Tarentum, a Greek philosopher sometimes called “the father of mechanics.” The general principle of the screw was applied early on, in cities like Pompeii, to extract olive oil and grape juice.
What are the 3 types of screws?
3 Common Screw Types at a Glance – Machine, Sheet Metal, and Cap Screws.
How old are Phillips head screws?
In the early 1930s, the Phillips head screw was invented by Oregon businessman Henry Phillips (1889–1958). Automobile manufacturers now used car assembly lines. They needed screws that could take greater torque and could provide tighter fastenings.
What is a Phillips screw?
1. Phillips screw - a screw with a special head having crossed slots. screw - a fastener with a tapered threaded shank and a slotted head. trademark - a formally registered symbol identifying the manufacturer or distributor of a product.
Why are there no Robertson screws in America?
Most historians attribute its lack of popularity in the United States to Henry Ford. Having been nearly bankrupted by shady European licensees, Robertson refused to license his invention to Ford. Without a guaranteed supply, Ford turned to the Phillips-head screw, cementing its reign in American industry.
Why are there Phillips and flat head screws?
Shamelessly ripped off from here, looks like the primary reason why we still have "bad" screws (flat head and Phillips) is that the "better" types of screws are simply more difficult/expensive to manufacture: The reason for the different styles is cost and torque.
Do screwdrivers wear out?
LPT: Screwdrivers can wear down, especially cheap ones, which might strip screws you use them on. Inspect and replace on a regular basis. Learned this the hard way, but I had my go-to screwdriver I used for everything.
