| John Blenkinsop invented a steam engine which had cogs on one of its wheels. |
| Otherwise they hold on to whatever touches them, and the chain will have enough lube on it to moisten up the cogs where it contacts each one. |
| There's always sand in the cogs somewhere, even if these days its the ionosphere, or the troposphere, where things get gritty. |
| They're not the real story or the heart of the money lubricating the cogs of this machine. |
| People bury themselves in a totalitarian cause that treats people as mere cogs, or else nasty grit, in a mighty and holy machine. |
| If the chain is too long, the derailleur will rotate inward too far and bounce the upper jockey wheel through the chain on the largest cogs. |
