According to the owner it's a flat spring relay, which I think is similar to a
wire spring relay, I really don't know the difference between the two.
The answers for this set have been posted, still not sure about the last one:
I agree that it is a flat spring relay. From the end shown, the
wire-spring relay would have what appears to be squared-off twisted
wires as pins (squared-off to serve as wire-wrap pins). This one shows
flat springs narrowed to make the pins for the wire-wrap connections.
Flat spring contacts (easier to see from the other end) have one
or two silver contact buttons spot welded onto the springs. The two
contact ones are better at controlling bounce pulses, and will have a
slot cut between the two contact points so each applies force
The wire spring relays have two spring wires for each contact,
each making contact on its own with a rectangular stationary block
(secured on the end of a stiffer single wire), and usually two more
making contact from the other side depending on which direction the
magnetic arm is in at the moment. The contacts are all moved by a
single phenolic frame with notches for each of the wires.
The function of the first one explains why it has two triggers
-- one for forward, the other for backward thrust. That is a neat
device to show.
Posting from my desk top PC in the living
room, as always.
3109, pneumatic vaccination gun?
3110, no clue. Maybe electrical measuring
3111, Superman's hiking stick
3112, maybe a pallet puller?
3113, maybe some kind of switching relay,
possibly phone system?
3114, it's a long black thing with no
discernable detail. Perhaps better photos?
Better photos would certainly help, it's plastic, hollow, and has four slots on
the end, two of which can be seen in the last photo. I was thinking it could be
some kind of knot tying device but couldn't find one like it.
3110. Is a magnetic particle inspection yoke.
Used to detect cracks
in steel items. Turn it on with the button and
sprinkle very fine
steel powder and if there is a crack the powder
will stand up on
either side of it. Can't be fooled. The coils
swivel to accomodate
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