Recent Blogs
Watch-winding Stop (form 3) Mechanism: How It Works, Parts, Diagram, and Turn-Count Formula
Watch-winding stop form 3 explained — how this ratchet-and-pawl limit prevents mainspring overwinding in horology, with formulas, tolerances, and a worked example.
Watch Train Mechanism Explained: Going Train Gear Ratios, Parts, Formula & Calculator
Watch train explained: the gear chain that steps mainspring torque down to the balance wheel in mechanical watches, with ratios, examples, and design tradeoffs.
Stem-winding Movement Explained: Keyless Works Mechanism, Parts, and Crown-Turn Formula
Stem-winding movement explained — how the crown, clutch, and winding pinion drive a watch mainspring, with formulas, tolerances, and worked examples for watchmakers.
Harrison Winding Device Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained
Harrison's maintaining power winding device keeps a precision clock running while you wind it. Used in marine chronometers and longcase regulators since 1722.
Going Train Mechanism Explained: How Clock and Watch Gear Trains Work, Parts, Ratios & Diagram
Going Train explained: how the clock train transmits power from mainspring to escapement, gear ratios, real horology examples, and design tradeoffs.
Mainspring Mechanism Explained: How It Works, Parts, Torque Formula & Barrel Diagram
How a mainspring stores and releases energy in watches, clocks, and timing mechanisms — torque curves, barrel sizing, and real-world tolerance rules.
Spring Motor for Sewing-machine: How It Works, Parts, Diagram and Calculator
Spring motor sewing machine drive — how the coiled spring stores energy, powers the head for 30-60 seconds, and where treadle and electric makers used...