Posting from rec.crafts.metalworking as always.
2407) Looks like a Stirling heat engine. Not sure what it is
intended to power but the groove on the flywheel looks like a
match for the belt on the old foot treadle powered sewing
machines, which would be a reasonable load for this kind of
engine.
2408) Perhaps for digging up potatos.
2409) Looks like something to feed and (perhaps split) some ribbon
form of workpiece. It feeds through the pair of gears with
grooves. Whether it feeds out the U-shaped guide shown on the
near side or feeds in through that is not yet clear. If the
width of the guide matches the width of the workpiece, then the
gears will punch two rows of holes near the edges of the
workpiece -- leaving it looking something like movie film.
2410) Perhaps a grate shaker for an old wood stove, or a coal fueled
furnace.
2411) No clue -- other than nasty to have sliding against your skin.
Perhaps part of a wool carding setup?
2412) Gasoline or kerosene fired heater -- looks like a modification
of the old plumber's blowtorch.
Now to post this and then go see what others have suggested.
(It does not help that the punkin' chunkin' TV special is on while I'm
typing. :-)
Enjoy,
DoN.
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