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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. Thompson who, in 1932, patented (#1,908,080) a recessed cruciform screw and in 1933, a screwdriver for it.
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.
What is the meaning of Philip screwdriver?
Definition of Phillips screwdriver : a screwdriver that is designed to be used with a type of screw (called a Phillips-head screw) that has a slot in its top that looks like a cross.
Who invented the Phillips screwdriver and why?
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.
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.
What is the opposite of a Phillips screwdriver?
The Frearson screw drive, also known as the Reed and Prince screw drive, and specified as ANSI Type II Cross Recess, is similar to a Phillips but the Frearson has a sharp tip and larger angle in the V shape. One advantage over the Phillips drive is that one driver or bit fits all screw sizes.
What came first the Phillips head or the flat head?
The flat-head, or slotted flat blade, screwdriver, has a much longer history than the Phillips. Dating back to the 16th century, the flat-head is used to tighten screws, bolts, and fasteners of all sizes.
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 slotted screwdriver?
The first industrial process for making screws was developed in England in the 1760s but it was Cullen Whipple of Providence, RI, who invented the automated method of cutting screws in 1842. From the beginning the slotted head, driven by the flat-bladed driver, was the standard.
What is the used of the phillips head screw?
Phillips screw heads allow a tighter fit than a flat head screw, which is why most factories and handymen use them. The screws tend to be lightweight and relatively small. The trick is to match your screwdriver to the type and size of screws you’re using.
What happened to screw if you over tighten them with a screwdriver?
Everyone who has ever worked with fasteners has accidentally messed one up at some point. One of the most damaging ways to do that is by over-tightening, or over torquing the fastener. This can result in stripping screws, snapping screw heads and damaging pre-tapped threading.
What is the meaning of flat screwdriver?
a screwdriver with a flat wedge-shaped tip that fits into a slot in the head of a screw. type of: screwdriver. a hand tool for driving screws; has a tip that fits into the head of a screw.
When did Phillips head screws come out?
July 7, 1936: Get a Grip Phillips Screws Up the Toolbox. Henry F. Phillips receives patents for a new kind of screw and the new screwdriver needed to make it work. It changes the worlds of mass production and machine repair, not to mention your home toolbox.
Who invented the screw?
How did the Phillips screwdriver take over America?
Standardized screw heads and screwdrivers emerged later. Early screws used either a slotted head or some sort of square or octagonal drive. As screw production increased, slotted drives became standard.
Why do flathead screws exist?
Why? Because some manufacturers have not yet experienced the perfection that is the Robertson head screw Flat head screws are good for wood as they prevent overtightening and thus help prevent stripping.
What is Panhead screw?
A pan head self-drilling screw has a rounded base and a flat head that sits on top of the material it fastens. With its large diameter and high edges, the drive slot is deep, which allows for increased torque while minimizing the risk of damage to the screw.
Who invented pozidriv screws?
It’s the 1930s in the US. Henry Phillips buys the idea of a recessed screw head from an inventor named JP Thompson, develops it into a workable form and founds the Phillips Screw Company in Oregon.
What is the slot in a screw called?
Drive: This is the slot where your screwdriver tip goes. It’s also referred to as a screw head. There are many such options; accordingly there are many screwdriver tips you should have in your toolbox.
What size is PZ2?
Teng Tools Pozi Head Screwdriver Chart Item ID Size Overall Length MD961N PZ1 183mm / 7.2 inches MD961N1 PZ1 358mm / 14.1 inches MD961N2 PZ1 96mm / 3.8 inches MD962N PZ2 216mm / 8.5 inches.
What is a Robertson bit?
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. The Robertson screw is specified as ANSI Type III Square Center.
Why are there Phillips and flat head screws?
Flat drive screws allow more torque and are an older type but, the screw driver has a tendency to slip out the sides. Philips drive screws are self centering but are designed to skip if a high torque is applied. Torx drive can take high torque and stay in the screw but are more expensive and not very common.
What is the difference of Philips screw and star screw?
Phillips and posidrive screws are two types of crosshead screws, different from each other in that the Phillips screw head has four cross points and the posidrive screw head has a star with eight points.
What’s a Phillips screwdriver look like?
A Phillips screwdriver has a head with pointed edges in the shape of a cross, which fit neatly into the cross slots of a Phillips screw. Phillips screwdrivers are available in five different sizes, ranging from zero(smallest) to four (largest).
