Ratchet-wheel
51Grasshopper escapement — The grasshopper escapement is an unusual, low friction escapement for pendulum clocks invented by British clockmaker John Harrison around 1722. An escapement, a part of every mechanical clock, is the mechanism that releases the clock s gears to… …
52Escapement — redirects here. For the fisheries term for the stock surviving fishing pressures over a spawning cycle, see Spawn (biology). For other uses, see Escapement (disambiguation). A deadbeat escapement, used in many pendulum clocks. Click above to see… …
53Mechanical watch — The movement of a Russian watch A mechanical watch is a watch that uses a mechanical mechanism to measure the passage of time, as opposed to modern quartz watches which function electronically. It is driven by a spring (called a mainspring) which …
54rachet — noun mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction • Syn: ↑ratchet, ↑ratch • Derivationally related forms: ↑ratchet (for: ↑ratchet) • Hypernyms: ↑ …
55Hoist (device) — This article is about Hoist (device). For other uses, see Hoist (disambiguation). A hoist is a device used for lifting or lowering a load by means of a drum or lift wheel around which rope or chain wraps. It may be manually operated, electrically …
56pallet — pallet1 [pal′it] n. [Fr palette: see PALETTE] 1. a wooden tool consisting of a flat blade with a handle; esp., such a tool used by potters for smoothing and rounding 2. PALETTE (sense 1) 3. a low, portable platform, usually double faced, on which …
57Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …
58watch — /woch/, v.i. 1. to be alertly on the lookout, look attentively, or observe, as to see what comes, is done, or happens: to watch while an experiment is performed. 2. to look or wait attentively and expectantly (usually fol. by for): to watch for a …
59Click — Click, n. [Cf. 4th {Click}, and OF. clique latch.] 1. A detent, pawl, or ratchet, as that which catches the cogs of a ratchet wheel to prevent backward motion. See Illust. of {Ratched wheel}. [1913 Webster] 2. The latch of a door. [Prov. Eng.]… …
60pall — Pawl Pawl, n. [W. pawl a pole, a stake. Cf. {Pole} a stake.] (Mach.) A pivoted tongue, or sliding bolt, on one part of a machine, adapted to fall into notches, or interdental spaces, on another part, as a ratchet wheel, in such a manner as to… …
