Posting from my desktop PC, as always.
2719, too dark to get much an idea what we're seeing.
2720, broken porcelean from a spark plug.
2721, too dark to see.
2722, no clue. From the picture of the old vehicle in the background,
something vehicle related? Acetylene gas generator?
2723, no clue.
2724, pictures too dark to see well. Maybe a bottle corker.
Christopher A. Young
Learn more about Jesus
2722 -- Martian Big Four crystal radio from about 1923. I can't conceive why
they made it like that, but they did. Frequently appears on e-bay. The Martian
Special shown on the page below seems far less common.
I lightened up the first, third and last photos, I guess my monitor settings
are different from most, they looked ok on my screen. Thanks for the
feedback.
Rob
2720: ceramic insulator of a now-damaged sparkplug
2721: no idea
2722: an early radio (sparkgap transmitter? crystal receiver?)
2723: some kind of hole cutter; start with a pilot hole, this
scores a large-radius circle with two hardened cutterwheels
2724: there's a piston missing, I'm thinking this is a rivet
press, like for staking the rivets in Levi's jeans. Or, rhinestones,
or snaps.
Posting from Rec.crafts.metalworking as always.
2719) Perhaps a coin box for some kind of transportation setup,
like a horse-drawn trolley perhaps?
2720) A screw-on insulator of some sort -- perhaps old post and stud
house wiring, or perhaps telephone wiring from the telephone
pole.
2721) It looks like the top of a fence post -- with holes to allow two
rail fences to meet at right angles. And perhaps specifically
for horses with riders to jump over, before they started making
them with rails which were easy to knock off.
Perhaps sawn off to use as a guide in making a replacement
corner fence post.
2722) It sort of looks like a holder for a galena crystal and a
catwhisker (in the ball-socketed arm above) for a crystal radio.
Is there a coil wound around the barrel? Too late at night for
me to take time to save an image and brighten it up.
Or perhaps there is a coil inside it, given the springs to make
it easy to take apart.
2723) A tool for making round holes in thin sheet metal. You drill a
hole to pass the screw, select the right size backing plate to
go on the other side, tighten the nut, and then turn the upper
part with a wrench and tighten the nut as the rollers force a
groove into the metal.
2724) Perhaps a tool for loading wads and shot into a shotshell and
crimping it closed.
Also -- with additional parts -- for pushing out the spent
primer.
Time to go to bed. I'll read the other suggestions tomorrow
sometime. A busy day today.
Enjoy,
DoN.
2721: I don't know how they wired temporarily in the knob-and-tube days.
To provide power for a construction crew, this could have kept two
circuits from touching where they crossed. Ceramic insulators may or
may not have been put through the four holes. On each side of the
block, you might put a spacer to keep the two conductors in a circuit
farther apart. You'd thread the conductors through the block and
spacers, hoist it up where workers wouldn't hit it accidentally, and
pull the conductors tight.
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"Rob H." wrote:
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The Greenlee "Radio chassis punch" marked a significant advance
when it came to punching large holes in sheet metal.
Lew
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