Crankpin

In a reciprocating engine, the crankpins, also known as crank journals are the journals of the big end bearings, at the ends of the connecting rods opposite to the pistons.

If the engine has a crankshaft, then the crank pins are the journals of the off-centre bearings of the crankshaft. In a beam engine, the single crank pin is mounted on the flywheel; In a steam locomotive, the crank pins are often mounted directly on the driving wheels.

Big end bearings

Big end bearings are commonly bushings or plain bearings, but less commonly may be roller bearings, see crankshaft.

In a multi-cylinder engine, a crankpin can serve one or many cylinders, for example:

Big end design

There are three common configurations of big end bearing:

Crank

Crank may refer to:

Mechanism

Places

Popular culture

Crank of a partition

In number theory, the crank of a partition of an integer is a certain integer associated with the partition. The term was first introduced without a definition by Freeman Dyson in a 1944 paper published in Eureka, a journal published by the Mathematics Society of Cambridge University. Dyson then gave a list of properties this yet to be defined quantity should have. George E. Andrews and F.G. Garvan in 1988 discovered a definition for crank satisfying the properties hypothesized for it by Dyson.

Dyson's crank

Let n be a non-negative integer and let p(n) denote the number of partitions of n (p(0) is defined to be 1). Srinivasa Ramanujan in a paper published in 1918 stated and proved the following congruences for the partition function p(n), since known as Ramanujan congruences.

These congruences imply that partitions of numbers of the form 5n + 4 (respectively, of the forms 7n + 5 and 11n + 6 ) can be divided into 5 (respectively, 7 and 11) subclasses of equal size. The then known proofs of these congruences were based on the ideas of generating functions and they did not specify a method for the division of the partitions into subclasses of equal size.

Crank, Merseyside

Coordinates: 53°29′35″N 2°45′00″W / 53.493°N 2.750°W / 53.493; -2.750

Crank is a village near Rainford, Merseyside, England in the Metropolitan Borough of St Helens. Historically part of Lancashire, it is known locally for its ghost stories 'The White Rabbit of Crank' and 'Crank Caverns'.

The village had one public house - The Red Cat, which closed in August 2015.

See also

Pin (computer program)

Pin is a platform for creating analysis tools. A pin tool comprises instrumentation, analysis and callback routines. Instrumentation routines are called when code that has not yet been recompiled is about to be run, and enable the insertion of analysis routines. Analysis routines are called when the code associated with them is run. Callback routines are only called when specific conditions are met, or when a certain event has occurred. Pin provides an extensive application programming interface (API) for instrumentation at different abstraction levels, from one instruction to an entire binary module. It also supports callbacks for many events such as library loads, system calls, signals/exceptions and thread creation events.

Pin performs instrumentation by taking control of the program just after it loads into the memory. Then just-in-time recompiles (JIT) small sections of the binary code using pin just before it is ran. New instructions to perform analysis are added to the recompiled code. These new instructions come from the Pintool. A large array of optimization techniques are used to obtain the lowest possible running time and memory use overhead. As of June 2010, Pin's average base overhead is 30 percent (without running a pintool).

Pin (bridge)

In bridge and similar trick-taking games, the term pin refers to the lead of a higher card from one hand to capture a singleton of lower rank in an opponent's hand.

Example

South wants five tricks from this suit. If the opponents' cards split 3-2 and they defend rationally, South must lose at least one trick – dropping a singleton king won't help South. However, if East holds the singleton jack then South can begin by lead the queen and pinning the jack. Provided declarer can re-enter his hand at least once, he can then take up to two finesses to capture the king.

The tactic is also available to the defense, but it is more difficult to find when declarer holds the singleton.

References

Pin (song)

"Pin" is a single by the Yeah Yeah Yeahs from their debut album, Fever to Tell (2003). It was released on July 22, 2003, and received critical acclaim but did not receive much mainstream attention, especially when compared with the band's next single "Maps". This single includes the B-side "Mr. You're On Fire Mr." (a Liars cover), which is not found on any of the Yeah Yeah Yeahs' full-length releases. The single peaked at #29 on the UK official charts.

The animated video for the song was created by Tunde Adebimpe.

Charts

Track listing