(1) An instrument for docking horses. Where ? - at the back end. Circa 1880 - 1900.(2) A reciprocating hot air engine. Output - slightly less hot air.(3)Well made (and engraved) clockwork turnspit. Probably circa 1860 - 1900.
1. No ~ but I like the cut of your jib2. Yes ~ and while you are not wrong about its output it is customarily stated in horse-power.3. No ~ this has much higher gearing and is associated with the effects of food rather than the preparation of it.
1. is a wood-working cramp, unlike the frame-cramp which is compressed by a screw, this is expanded by a ratchet whose handle is flip-flopped from side to side and can have a long handle inserted to enable large forces to be applied when laying floor or deck boards.2. this small hot-air motor provides approximately 1/40th of a horse-power.3. a beautifully ornate clockwork dental drill, I'm surprised the modern 'steam-punk' fashion movement hasn't seized upon it's design and produced a clockwork tooth-brush