1055 is a vibration frequency indicator
1057 is a watchmans clock. Marks a roll to show when he checked points
in his round
1058 is a set of lifting dogs, probably for timber as they seem to
have been hammered in to start them gripping
1055: Magical device that screws into light bulb socket and summons
demonic gennies via electro-gravimetric powers?
1056: 3 pound scuba diver's weight for weight belt
1057: I am gonna say a train conductor's watch.
1058: Log hauling chains. Hammer in the spiked part, hook up to horse
team, pull to collection point.
1059: Planetarium star projector?
1060: Knuckle breaking torture device from Chenney's CIA guys?
What do I win?
1055--Totally baffling. Clearly, the base is made to screw into a light
socket, but not for the purpose of making electrical contact. I suspect
that it simply uses the mogol base as a convenient way to hold it. It
measures a number of angles fairly accurately, and yet, there is no obvious
way to input anything. Also puzzling is the brass "weight" near the tip of
the pointer. It looks like you could adjust that up or down like the weight
on a metronome, but WHY?
Andrew Mawson thought that it might be a vibration frequency
indicator, and I think you are both on the right track. I'd suggest
that it might be for measuring the frequency of AC current. Adjust
the length of the arm until the amplitude of vibration is the greatest
(that's what the semi-circular scale is there to measure), and read
the frequency off the linear scale.
"John Martin" (clip) I'd suggest that it might be for measuring the
frequency of AC current. Adjust the length of the arm until the amplitude
of vibration is the greatest (that's what the semi-circular scale is there
to measure), and read the frequency off the linear scale.
"The black part at the bottom appears to be made of bakelite." From the OP.
There does not appear to be any electrical contact at the tip of the black
part, nor is any mentioned. So I doubt that it is electrical. Also, I have
trouble thinking of any way that all those angular adjustments and scales
could be related to frequency. It looks like the straight scale is in the
range aroud 60, which does support your suggestion.
You're correct in that it's not electrical, there is no contact on the
bottom, nor are there any coils inside. I've shown it to a couple of
electrical engineers and we all agreed that it's some type of vibration
indicator, as was mentioned by Andrew, but we could only guess at it's exact
There is no company name or patent date on it, just some numbers on the back
that yielded nothing in a search. It does fit into a light socket, and note
that the back plate is shaped like a light bulb, a couple possible answers
that I've heard:
-Used by a bulb manufacturer to test the strength of filaments
-Used to test the amount of vibration that a bulb would have to endure in a
particular machine, such as a large projector
These are just guesses but I think they're on the right track.
I once heard of a curious situation on the shake-down cruise of a heavy
cruiser. When the 10" guns fired, every light bulb in a certain section of
the ship shattered!
Maybe this gizmo is a Naval Bulb Vibration Test Instrument, Model 44-A2/2.
I removed a curry stain from my tablecloth with oxyclean. I was most
Please see my other post for my opinion on steam cleaners. Not at all like
the adverts, they don't tell us the tiles will fall off!
Initially I wondered if there was a coil internally which was
electrically connnected to the Edisison Screw base and set the
variable reed into vibration at mains frequency - but I discounted
that as if there is the entire device would seem to be live to one
side of the mains and thus lethal! Though I suppose it might be a 12
or 24 volt device. The calibration seems to be centred on 60, so that
would point to American volts not good old standard English ones at 50
cps <G> .
(Posting from rec.woodworking)
A pretty baffling set this time...
1055 - This appears to be designed to detect and measure the strength of
vibrations; the excursion of the pointer at the top would indicate their
magnitude, and different frequencies (within some range) can be selected
by varying the tension screw. The angle and elevation could serve to
detect the orientation of the vibrations.
The mounting screw end looks suspiciously similar to a light bulb
mounting. It's not clear if there's an electrical contact at the
bottom, but if there is, it's pretty well hidden and not mentioned, so
I'm assuming not. I'd guess it may be some tester for evaluating light
bulb sockets for vibration, perhaps for developing vibration-resistant
If there is a contact on the base, it may be some sort of an AC
frequency meter, with an electromagnet somewhere inside to excite the
pointer. The scale for the tension would be reasonable for modern 50/60
Hz AC circuits. The pointer doesn't look to me like it would have that
high of a resonant frequency, however.
1056 - A number 3 webbing holder/weight; maybe (wild guess) for
adjusting the center of buoyancy of divers?
1057 - Obviously a clock of some sort, made in the USA by a Chicago
company. I assume a correct answer is a bit more involved!
1058 - Some fetter or other restraint for livestock?
1059 - Simple planetarium machine, with only a few key stars. I'd guess
for illustrating the seasonal and hourly variations in where
constellations are in an educational setting (marine navigation?)
1060 - Looks to be a punch or former of some sort. I'm clueless as to
the specific application.
"He is no fool who gives what he cannot keep to gain that which he cannot
O.K. Posting late from rec.crafts.metalworking, because I was
reconfiguring my network last night.
1055) Obviously a device for monitoring power line frequency. Power
line in part because of the lamp type screw base, and in part by
the frequncy range covered -- about 45Hz to 85 Hz, so it would
work with both common power line frequencies -- 50 Hz and 60 Hz.
It is a vibrating reed, and you adust the free length by turning
the knob at the other end of the the cylinder which mounts the
reed, moving the pointer (and a clamp to effectively shorten the
reed, thus changing the resonant frequency.
You screw it in, adjust the two angle clamps to make it easy to
read and to access the knob, turn on the outlet, and adjust the
knob for the maximum swing (on the arc-shaped scale under the
1056) This looks like a skin-diving belt weight.
1057) A night watchman's recording time clock. There is a key at
each station which he puts into a keyhole on the back or side
and turns it to imprint a unique number for each station to
prove that he was there at the proper time.
1058) For lifting something with a crane. From the size and the
hooks, I would guess that it might be a hay bale, but it could
be a number of other things just as well.
1059) A desktop planetarium
1060) A guess is that it screws into the underside of a shelf, and is
used to hang papers by a single hole punched in the paper.
Now to see what others have said.
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