cottaite

[Ger.cotta it.] Cowper: Truth. Min.: A grayish-white sub-variety of orthoclase, found in twin crystals in granite in Carlsbad, in Bohemia. cot-ter (1), 8. [Etym. doubtful.] Machinery: 1. A key; a wedge-shaped piece driven between the gibs in attaching a strap-head to a connecting rod and tightening the bra es of a bearing. [KEY.] 2. A key inserted into a link which has been pa ed through another link of a chain. A broken chain is thus temporarily mended. This mode is adopted in fastening a log on the sled, and generally in securing an object by a chain when the whole length of the latter is not required. The hook at the end of the chain usually forms the cotter , and it is much better than making a running noose of the chain in the link, as the latter is difficult to unfasten, while the cotter can be slipped or driven out, leaving all free. A toggle. 3. A wedge which is driven alongside the end of the tongue in the mortise of the sled-roller, tightening the latter against the gib. [GIB.]