KNUCKLE (apparently the diminutive of a word for "bone," found in Ger.
In mechanical use the word is applied to the round projecting part of a hinge through which the pin is run, and in ship-building to an acute angle on some of the timbers.
A "knuckle-duster," said to have originally come from the criminal slang of the United States, is a brass or metal instrument fitting on to the hand across the knuckles, with projecting studs and used for inflicting a brutal blow.
The tank's "knuckle" is the weakest part of the tank and difficult to assess.
The first tanks, built as early as the 1940s, were single-walled, but their contents have since been emptied into sturdier, double-walled tanks.
Government regulations mandate that these double-walled tanks be inspected, but no technology was previously available to “see” the crack-prone “knuckle” region near the bottom of the tanks where the wall meets the floor.
The bolts that attach the steering knuckle bearing cap to the knuckle are a particular length.
Proper length of these bolts varies with the vehicle but generally if full thread engagement in the steering knuckle is obtained and the bolt does not protrude through the knuckle, the bolts will be suitable.
Knuckle bearing adjustment on these later models is also done at the top bearing cap only.
In the hand, the MCP joint — where the metacarpal bones of your hand meet the phalangeal bones of your fingers to create your knuckle — is most commonly affected by rheumatoid arthritis, although the other joints in the finger also might be damaged by rheumatoid arthritis.
Your knuckles rely on a complex system of tendons and ligaments to stabilize the bones of your hand and fingers and allow free movement of your fingers.
Osteoarthritis rarely affects the first knuckle, but instead it most commonly affects the joints at the base of your thumb and those at the middle and tip of your fingers.
The scant literature that is available on this topic indicates that habitual knuckle cracking may have a direct effect on the soft tissue of the hands and there is a case study that indicates it may also cause damage that leads to radiologic change (17).
Because the average duration of the knuckle cracking habit was 35 +/- 18 years, the habit seems to have little effect on joint cartilage.
Although the cause of habitual knuckle cracking was not considered in this study, patients admitting to it were more likely to bite their nails, smoke, and drink alcohol, as were members of their families (table 2).
Two knuckle hinges are not normally functional if built using tubing because the end surfaces (the contact places) of the tube ends in the middle of the hinge are not broad enough to provide sufficient structural strength to hold up in use (this is the voice of experience).
A two knuckle system that works is the traditional forged link one where square stock is forged so that each end goes from broad to narrow thus changing the axis of the hinge pin and allowing the linkage to move well in two directions alternating every two links.
There is the option of leaving some of the knuckles out and exposing the hinge pin as a design element-of interest with a larger hinge pin or one of a different color than the knuckles.
Knuckle Up is basically a series of boss fights in the classic, video game sense.
While this system does not allow for a great degree of punch variety, it is infinitely preferable to the more complex control of competing games, such as Sorrent's Fox Sports Boxing, which requires the use of number keys in conjunction with the directional pad.
Knuckle Up's limited repertoire of punches is not a big weakness.
My knuckles don't ache any worse than the rest of me, and I can still play guitar, operate a microscope, cut balsa, etc. with no pain.
Cracking your knuckles, or cracking a joke are probably OK. However, if you graduate to cracking your head, or cracking an egg, your in trouble.
He told me about a study done in the 1990s where elderly people were separated into three groups--people who've never cracked their knuckles, people who crack their knuckles a couple of times a day, and people who crack their knuckles more than twice a day.