[CW] An arm looking for a key.

[Richard Knoppow]

    I suspect the threaded nub for the knob is actually the threaded 
part of a knob which came out of the knob. I can't tell from the pix if 
it could be unscrewed from the lever.
    There were many keys of the basic "steel Lever" or Triumph pattern 
including the ubiquitous J-38 but the exact dimensions can vary. For 
instance, long ago I bought a key which came in a Western Union New York 
Repair Shop box. It was actually made from a collection of parts that 
didn't fit very well. the lever, which you show, is just a little long 
to fit either a Bunnell or Western Electric key, i.e. the contact does 
not quite line up but works. I have no idea what kind of key it came 
from. I think there must have been at least twenty companies who made 
keys, all very much alike, but probably differing in exact details and 
dimensions. Sorry I can't be of more help but I would suggest measuring 
the distance of  the adjustment screws and the contact from the pivot 
for comparison with other keys.

On 3/18/2024 12:37 PM, Donald Kemp wrote:
> This is an arm that I can't find a key for. I've looked at online key
> collections but I don't see a match.
> The arm is about 3-1/8" long and 3/16" square stock.
> The male screw for the knob is #8 and the threaded hole
> for the contact space adjustment screw is #6.
> The contact it staked; once on one side and 3 times on the other.
> There is a hole between the contact and the arbor, it is not threaded.
> It could be for a different contact placement for a bucket for a spring.
> The arbor is 1-1/4" long
> 
> Any idea what key this belongs to?
> 
> -- 
> 73,
> Don, NN8B
> "Meanwhile, with ever increasing power, the telegraph has become not 
> only the master of commerce, but the tongue of mankind." - James D. 
> Reid, 1886
> 
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> =30=

-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998