Pattern 6111 C CW Send Receive ???

[VE7EPP]

I know this is an AM forum but I thought I'd put this out there.  Does anyone know anymore information about this item?

The tag reads as follows:

Pattern 6111 C
Key Send - Receive A/S 57
Serial No. CAN 965
Small Electric Motors (Can.) Ltd.
Leaside, ONT.  1942

I've had it sitting on the shelf for quite a while and figure its about time to try to find out more about it.

David VE7LE

[VE7EPP]

I might add that it has what looks like a fuse initially but more like a mercury spark tube or something.

Here are a few more pictures.

[w1vtp]

Bigger pictures might provoke more response.  My first guess was some form of rotary spark generator - perhaps it might be some form of modulated CW thingie

[VE7EPP]

thanks..

let's see if these pictures show better.

[KA2DZT]

During WWII there was more than just teletype machines.  They had equipment that could sent and receive images.  I had a piece of equipment that, I believe, did just that.  It had similar strange looking motors.  Your motor might be from some similar piece of equipment.

Fred

[Opcom]

polar keying? that is, the contact is closed in either position, with center being neutral?

What about the green tag? If it is army, the CECOM History folks might know. I ask them stuff a lot. Love the obscure stuff!

[w1vtp]

How 'bout a pic of the green tag? That detail on the left hand side looks like a sync make break switch that runs of a cam on the motor shaft.  Now, any more detail on the rotary disk?

I love a mystery!

[VE7EPP]

There is a cam that swings either left or right closing the contacts on either side.  Here is a picture of the tag.

[Opcom]

Nothing to do but see if the motor will turn and try it?

[VE7EPP]

...If I only knew what voltages this thing ran at.  Here is another picture of the top.

[Opcom]

It looks like it might be a rotary solenoid.
Can you freely rotate the shaft/contact back and forth, perhaps against some spring pressure?
What is the DCR on those terminals (remove the 2K resistor)?
Are there other terminals that seem to go into the motor body?

In this top view, see the lower left screw? What is that silvery cylinder-looking thing there?

The resistor, if across a coil, might be for damping as was done with deflection yokes as they are subject to quick reversals of current.

[VE7EPP]

Yes, I can rotate the shaft back and forth.  The spring pressure is NO/NC switch at the left side.

The DCR is 196 Ohms.

I don't see any other terminals

I've found on the tube "PATT 8431".  In the center of the tube are two flat caps that have tube innards to the outsides of each side.  I can't see much more because of the mercury on the glass.

[Opcom]

Mercury? How interesting!

I am guessing 27VDC for the motor based on this:

2K resistor, 2-3W.

1W dissipation would be 22mA, which would be 22VDC. Closest militayr/aircraft voltage is 27V.

DCR of the motor would let 138mA flow. It's within possibility.. That would be 3.7W dissipation in the motor.

So, worth a try there, see if it works. It should not be harmed in a short test.

The action should probably be quick like a TX/RX control rather than slow.

The mercury item, could be a switch or a dashpot?