2745 is a portable spark coil or high-voltage generator -- for what
purpose (lab? megging phone lines?) I don't know.
The first one I ever made had the annealed iron wire core, as does that
one. Tuning the contactor part for minimum current at a given voltage
yielded the highest voltage output (basically just tuning the contactor
frequency to match the resonant frequency of the coil). I don't see the
capacitor required for best performance, but it could have been placed in
the base, as the capacitors were often flat-plate designs that early.
I did not mean "generator" in the sense of "dynamo". "Generator" as in
"the maker of".
But then... if it doesn't work at high voltage, I don't know what it is.
Except for the built-in ammeter, it's physically almost identical to my
hand-made spark coil.
"Lloyd E. Sponenburgh" <lloydspinsidemindspring.com> wrote in message
I guess that I didn't read your first post closely enough, but it also isn't
a spark coil. The metal tag on the side that you can see in the second
photo has a two word name for this device, the first word is Magnetic.
If the iron wires were enameled, they would be a magnetic core designed
for low eddy current losses. Four leads going to windings around a
magnetic core suggest a transformer. The contacts remind me of a
battery-powered doorbell, the kind that rang like a telephone or a fire
I think this device produced AC from DC. The purpose may have been to
They needn't be enameled to serve that purpose, and they are a core.
Consider that E-I laminations on more modern transformers are not
enameled, although they are often varnished AFTER assembly.
The surface oxides on the wire - after the requisite annealing - and the
lams after bluing is quite enough insulation to prevent any serious
conduction between wires or lams.
2743, probably to fold the seam, of sheet metal edge
2744, Model A Ford?
2745, I was thinking a crank to power generator. But, with the bundle of
copper showing, maybe it's for reading amperage of a high power line?
2746, either for displaying pitted cherries in a refrigerated grocery case,
or for climbing mountains, as a grappling hook. Or, for illegal fishing.
2747, used for rolling cigarettes.
2748, belt for a man with a bad back, needing lumbar support.
Most of these guesses will turn out to be wrong.
Christopher A. Young
Learn more about Jesus
I need some help with the second item this week:
It does look like a card shuffling machine but this particular device is
indeed a tie press, I had shopped off the name a tie company that was
beneath the crown. No luck yet on the hood but the rest of the answers for
this week have been posted:
Posting from Rec.crafts.metalworking as always.
2743) These look like they are for punching holes at a set distance
from the edge of a steel strap.
Or perhaps, it could be for flattening said steel strap.
It would help to have them in my hands to be sure about this.
2744) No real idea -- but something in the 1930s or earlier I
2745) O.K. A magnetic core made of a bundle of mild steel wires,
which suggests that it is not a permanent magnet, but rather
intended for AC of some sort. (Early telephones had coils of
similar construction inside them, though not nearly as big a
bundle of mild steel wire as a core. :-)
Adjustable contacts on either side of a swining arm.
Multiple wires coming out the base. Enough for two windings,
say a lower voltage higher current one for the input, and a
higher voltage from the output.
An ammeter to measure the current on the input side.
I would suggest that this is intended to produce a fairly high
voltage AC from a low voltage DC (such as a lead-acid storage
Or -- if the contacts are right, and there are both a low
resistance winding and a higher resistance one with a center tap,
the contacts could also rectify the output (like a synchronous
vibrator in some early tube based car radios).
The ammeter is probably to help tuning the contact position for
the best power throughput. Looks like full scale is 20 Amps.
No clue that there is any marking about too high a current.
Given the meter, I suspect that it was a piece of lab equipment,
not something for daily use. The handle on the top also
2746) Perhaps for making beef jerky?
Or for dragging a river or pond for recovering a body?
2747) If it were smaller, I would suggest that it might be for rolling
cigarettes. More views might help.
2748) Part of a load binder strap, perhaps?
Is the end of the rope frayed, or does it have some special
Now to post, and then see what others suggest.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.