Screw theory - Wrenches

In screw notation force wrenches transform with a 6x6 transformation matrix, :-->

Strap wrench - Oil-filter wrenches

Many oil-filter wrenches are actually strap wrenches. Others are of the socket type or the pliers type.

Torque wrench - Electronic torque wrenches

With electronic (indicating) torque wrenches, measurement is by means of a strain gauge attached to the torsion rod. The signal generated by the transducer is converted to the required unit of torque (e.g. N·m or lb f ·ft) and shown on the digital display. A number of different joints (measurement details or limit values) can be stored. These programmed limit values are then permanently displayed during the tightening process by means of LEDs or the display. At the same time, this generation of torque wrenches can store all the measurements made in an internal readings memory. This readings memory can then be easily transferred to a PC via the interface (RS232) or printed straight to a printer. A popular application of this kind of torque wrench is for in-process documentation or quality assurance purposes. Typical accuracy level would be +/- 0.5% to 4%.

Torque wrench - Hydraulic torque wrenches

Hydraulic torque wrenches are used for tightening large torques with high accuracy. They are used for aviation and heavy machinery assembly and are specialized tools. Their general construction varies depending on manufacturer and torque requirement. Generally, they consist of at least one hydraulic cylinder operating a drive head ratchet. The cylinder extends, pushing the drive head round via the pawls, and then retracts freely over the ratcheting teeth. The process is repeated until the desired torque is met. Smaller hydraulic torque wrenches have a reaction arm built into the tool, which rests against another fastener or part of the assembly to prevent rotation when torque is being applied. Larger models require other fixing arrangements in order to prevent rotation.

Cyclopes - Ovid

She describes Polyphemus: Galatea continues: Polyphemus plays a flute and sings a song to Galatea. She and Acis are together, and they hear Polyphemus, who discovers them, and becomes enraged with jealousy, as Polyphemus’ true nature comes to the surface. Galatea, terrified, dives into the ocean. The Cyclops wrenches off a piece of the mountain and crushes Acis with it.

Klein Tools - History

Klein Tools was founded in 1857 in Chicago, Illinois by German immigrant Mathias Klein. The first tool Klein made was a pair of side-cutting pliers for a telegraph lineman. The company grew as the telegraph and eventually telephone and electrical industries grew after the Civil War by adding 100 types of pliers in the 1910s. From the 1960s-1980s, the company expanded their product line to include leather and canvas products, occupational safety equipment, hex key wrenches, screwdrivers, nut drivers, as well as electrical terminals and connectors. Along the way, Klein acquired the R.H. Buhrke Company of Fort Smith, Arkansas in 1968 and the Vaco Products Company of Jonesville, Michigan in 1986. Also in the mid 1980s, the company started manufacturing adjustable wrenches in the US, which they had previously been purchasing from a Japanese supplier.

24 Hours of LeMons - Awards

The midway award was aptly named People's Curse. One car was voted People's Curse, for being driven by the biggest jerks of the day as judged by the attending crowd. The offending car was crushed or otherwise destroyed typically by heavy equipment, but when none could be found, an angry mob with wire cutters and wrenches had been used. If there were not enough votes to destroy a car, it may have instead received nasty but non-fatal damage, or it may have been sent to the Penalty Box with a black flag. For 2013 the Curse was removed from the series.

Dewar Trophy - 1908 Trophy-winning performance

On Saturday, 29 February 1908, three Model Ks from the 1907 Cadillac production were released from the stock of the Anglo-American Motor-car Company, the UK agent for Cadillac automobiles, at the Heddon Street showroom in London (these were engines Nos. 23391, 24111 and 24118). The three cars, all registered in London under the numbers A2EO, A3EO and A4EO, were driven 25 miles to the Brooklands race track at Weybridge. There, the cars completed ten laps of the track, or approximately 30 miles, before being locked away until Monday, 2 March 1908, when they were released and disassembled completely, using only wrenches, screwdrivers, hammers, and pliers. Each car was reduced to a pile of 721 component parts, which were then scrambled into one heap by the RAC. Eighty-nine parts requiring extreme accuracy were withdrawn from the heap, locked away at the Brooklands club house and replaced with new parts from Anglo-American's showroom stock. The parts were then sorted into three piles, each with all the parts needed to assemble a car. A mechanic - Mr. E. O. Young - reassembled the cars with the help of his assistant - Mr. M. M. Gardner. Sometimes they had to work ankle-deep in water, using only wrenches and screwdrivers. The third car was re-assembled by Thursday morning, 12 March. With the painted parts on the original cars not being identical in color or style, the reassembled cars were mismatched in appearance, gaining the nickname "harlequin cars". By 2 p.m. on Friday 13 March the three cars had completed the mandatory 500-mile run with singular regularity. Only one point was lost owing to a broken cotter pin in the ignition lever (promptly replaced from stock). During the event, it was reported that one of the sheds where the parts were stored became partly flooded during a heavy storm and some parts became rusted. Only oily rags could be used to remove all traces of the immersion. On completion of the test, one of the cars was locked away until the start of the 2000-miles reliability trials in June 1908. It came out the winner of the R.A.C. Trophy for its class. Parts interchangeability had been publicly demonstrated and field tested.

Norbar Torque - 1940s

In 1942, at the height of World War II, Bill Brodey was engaged in selling various tools and machines including Joseph Sunnen honing machines used for honing cylinder bores of engines. Torque wrenches were being imported and sold alongside of the honing machines because it was known that uneven torque tightening of engine cylinder head bolts would distort the cylinder bore. Bill and his friend Ernest Thornitt applied to the UK Ministry of Supply requesting permission to manufacture torque wrenches in the UK. Torque wrenches were much in demand for the manufacture of Rolls-Royce Merlin aero engines and the UK Government was keen to manufacture in the UK wherever possible to reduce pressure on the Atlantic supply convoys. Consequently, permission was granted to 'The North Bar Tool Company' to start manufacturing torque wrenches in 'North Bar Place', Banbury in the United Kingdom. The address 'North Bar' gave the company its name and this was later contracted to 'Norbar'.

Channellock - History

In 1904, the company moved to a 12000 sqft facility in Meadville, Pennsylvania, and added nippers, pinchers and open-end wrenches to its product line. George B. DeArment’s two sons, Almon W. and J. Howard DeArment, became partners in the company in 1911 and expanded the product line again to include hammers. In 1923, the company moved again to a 33000 sqft facility at its current location in Meadville. Four years later, the name of the company was changed to the Champion–DeArment Tool Company.

Johan Petter Johansson

He eventually decided to start his own business and, in 1886, moved to Enköping where he started Enköpings Mekaniska Verkstad (the Mechanical Workshop of Enköping) which quickly became a successful venture. It was during the years in his workshop that he invented the adjustable spanner and the plumber wrench. In 1890, B.A. Hjorth & Company agreed to distribute his tools worldwide under the "Bahco" trademark. The Bahco tools became greatly successful, and the company is still in operation and has manufactured over 100 million wrenches to date.

Hydraulic torque wrench

Hydraulic torque wrenches typically offer accuracy of ±3% and have a high degree of repeatability making them well suited to applications where large bolts are involved and a high degree of accuracy is required.

Bicycle - Tools

There are specialized bicycle tools for use both in the shop and on the road. Many cyclists carry tool kits. These may include a tire patch kit (which, in turn, may contain any combination of a hand pump or CO 2 Pump, tire levers, spare tubes, self-adhesive patches, or tube-patching material, an adhesive, a piece of sandpaper or a metal grater (for roughing the tube surface to be patched), Special, thin wrenches are often required for maintaining various screw fastened parts, specifically, the frequently lubricated ball-bearing "cones". and sometimes even a block of French chalk.), wrenches, hex keys, screwdrivers, and a chain tool. There are also cycling specific multi-tools that combine many of these implements into a single compact device. More specialized bicycle components may require more complex tools, including proprietary tools specific for a given manufacturer.

Ponca Fort

Nanza comprises numerous earth lodge sites encircled by a protective wall perhaps six feet high. Today the fortification is still visible. Archeological excavations have determined there was originally a ditch three feet deep and ten feet wide surrounding the berm. An earth embankment supporting a post palisade was discovered inside the ditch. Guns, hatchets, knives, beads, kettles, cloth and other European goods have been recovered from Ponca Fort, and serve as a testimony to the village's important position in the local fur trade. There is also evidence of extensive trade with other tribes. Pottery, stone mauls, meeling slabs and maulers, bone knives, hoes, tubes, shaft wrenches and picks, and strip bark in rolls from as far away as the Southeastern United States.

Power wrench

A power wrench is type of wrench that is powered by other means than human force. A typical power source is compressed air. There are two main types of power wrenches: impact wrenches and air ratchet wrenches or pneumatic ratchet wrenches.

Socket wrench - History

Wrenches in the form of sockets—that is, a female driver to envelop the male head of a fastener—have existed for centuries. Early examples include the keys used to wind clocks since the Middle Ages. The heads and sockets were typically square; hex heads eventually became more common starting in the 20th century. The ratcheting socket wrench, with interchangeable (indexable) sockets, was invented by an American, J.J. Richardson, of Woodstock, Vermont. The tool was patented (Pat. No. 38,914) through the Scientific American Patent Agency on June 16, 1863. The first illustration of the tool appears on p. 248 of the April 16, 1864 issue of Scientific American. In current English usage, the term "socket wrench" describes the wrench, not the socket.

List of Persona 4 characters - Yosuke Hanamura

Yosuke's Shadow becomes the Persona, a red-scarved humanoid whose head vaguely resembles that of a cartoon frog decked with shuriken for eyes and on his hands, as well as bell-bottoms. As the first Shadow, Soejima designed it to make it similar to Jiraiya to convey the fact that Shadows and Personas are the same thing. Yosuke dual wields blades ranging from blunt wrenches to knives to kunai in battle. Throughout the player's interaction with Yosuke, he overcomes Saki's death and confronts his feelings about Inaba accepting it as an enjoyable town despite his initial feelings. After this, Jiraiya evolves into, a humanoid wearing a blue jumpsuit surrounded by a large sawblade with a flame rising from his head. Apparently, unused audio suggests that Yosuke could have been a romance option for the protagonist, but was removed at the last minute for unknown reasons. In the re-release Persona 4 Golden, Yosuke's Persona can evolve once more into, gaining a fireman's outfit, a large afro-like fireball spouting from his head, and sawblades beneath his feet.

Lug wrench

Lug wrenches may be L-shaped, or X-shaped. The form commonly found in car trunks is an L-shaped metal rod with a socket wrench on the bent end and a prying tip on the other end. The prying tip is mainly intended to remove hub caps or wheel covers that may be covering a wheel's lug nuts.

Piper Halliwell - Reception

CNN's Joshua Levs called Piper "the show's solid foundation" and commended the writers for making Piper and Leo's relationship "interesting throughout the entire run by throwing in major wrenches left and right. I can't think of another series that's pulled that off." In reviewing the fourth season, Leigh H. Edwards of PopMatters felt that Piper and Leo provided "engaging, often funny material" when they were "navigating the equally momentous shoals of domesticity." Gillian Flynn of Entertainment Weekly commented that when it came to the comedy moments in the sixth season, Combs' acting was the best one out of the show's three lead actresses. Flynn described Piper as a "pert little mother" and "purse-lipped precision underplayer." In his mixed review of the eighth and final season, DVD Verdict's Ryan Keefer praised Piper's "incredibly emotional goodbye to Leo" in the episode "Vaya Con Leos" and felt that she was "the saving grace for this season."

Pipe wrench - Pipe wrench in different countries

In the United Kingdom, these wrenches are often described by their size, i.e. 18-inch wrenches are known as "18s", or by the general name of "Stillies/stills".