[GreenKeys] LPW 300 paper winder

Sat Mar 31 20:50:08 EDT 2018

Ralph,

Teletype Corp. Bulletin 1129B is the parts manual for the POW & LPW tape 
winders (search for it at Navy-radio.com.)  It shows two versions of the 
"Display Rack" - a straight one; and a bent one labeled for M28, 34, and 35.

I have the straight Display Rack. I can give you the dimensions if you 
want them.

Duncan
K2OEQ

On 31-Mar-18 20:09, Ralph Irish wrote:
> *Well, I get to correct myself two times!*
> *
> *
> *The blue color of my paper winder is a great paint job.  It also 
> covered up a metal tag that had*
> *some of the info about the device.  It is a LPW 300-B winder.  I 
> removed the cover and also saw*
> *a power resistor whose value was not easily seen.  I didn't bother 
> with a meter, but I will take*
> *someone's word for it being a 600 ohm device.  Looks like a 25W item 
> to me.*
> *
> *
> *(The motor does look like one from a 50s simple phonograph turntable.) *
> *
> *
> *The device may have been mounted to a Model 15, since I see several 
> extra holes made for mounting.*
> *If it was mounted on a Model 28 the existing holes would have fit 
> along with others on the back of*
> *the cabinet for a smooth installation.  One of these days I'll have 
> to mount it on my Model 28KSR.*
> *
> *
> *Anyone else remember the 'chat' a few years back about the Copy 
> Display Rack for the paper winders?*
> *I **think one could be made from a 60" piece of round 1/4" stock. 
>  About 18" 'rise' on each side, 11"*
> *wide and about 6 1/4" inside the frame on each side.  18 + 18 + 11 + 
> 12 1/2 = 59 1/2".  Each end*
> *needs a small 'tip' to insert into a hole on the bottom of the 
> bracket on each side, **maybe 1/8" dia.*
> *
> *
> *The ones from TELETYPE have something like a 'spring' on the 11" 
> horizontal part, free moving, to*
> *allow paper to slide/roll as it goes over the top.  There are a few 
> offset bends involved as well.*
> *Does anyone have a Model 28 manual showing various accessories?  I'm 
> coming up with this info with*
> *my ruler and memory of what I saw several times in the past.*
> *
> *
> *https://archive.org/details/TNM_Teletype_paper_winder_LPW_300_-_Teletype_Corp_20171103_0012*
>
> This shows only the winder and no Display Rack.  The Rack has the part 
> number 193950.
> *
> *
> *Ralph - W8ROI*
> **
> *- - - - - - - -*
>
> *On Mar 31, 2018, at 3:16 PM, Duncan Brown wrote:*
> *
> *
>> *Bruce,
>>
>> When I said it was a "sync" motor, I was speaking generically. It 
>> looks like the standard phonograph motor. There is no starting capacitor.
>>
>> It does not have a slip clutch.
>> There is a mercury switch on a bail that is operated by the paper 
>> being wound up, such that just before the paper gets tight, the 
>> switch opens, shutting off the motor. When there is slack in the 
>> paper, the bail falls and the motor turns back on. Perhaps the 
>> resistor was a safety feature to prevent motor burn-out, but some one 
>> disabled it.
>>
>> Thanks,
>>
>> Duncan
>> K2OEQ
>>
>> On 31-Mar-18 14:33, Bruce Gentry wrote:
>> *
>>> *Does the winder have a slip clutch to allow the motor to turn while 
>>> the takeup spindle turns slowly or stops? If it does not, the 
>>> resistor almost   certainly goes in series with the motor. It is 
>>> very unlikely the motor is synchronous if there is no slip clutch, 
>>> they don't have much starting torque it's probably shaded pole or 
>>> capacitor start. Those two types can produce a reasonable starting 
>>> torque at reduced voltage and be stalled or nearly stalled for long 
>>> times if they have a resistor or other means to limit current.
>>> *
>>> *
>>> *
>>> *      Btruce Gentry, KA2ivy
>>> *
>>> *
>>> *
>>> *
>>> *
>>> *
>>> *
>>> *On 3/30/18 8:47 PM, Duncan Brown wrote:
>>> *
>>>> *I just acquired a LPW 300 paper winder. In checking it out, I 
>>>> found that there is a large power resistor (cant read it, but parts 
>>>> list says 600 Ohms) mounted next to the motor, but it has been 
>>>> taken out of the circuit.
>>>> *
>>>> *
>>>> *
>>>> *Did this resistor go in series with the motor?? (but it is a synch 
>>>> AC motor).
>>>> *
>>>> *
>>>> *
>>>> *Anyone know its purpose?
>>>> *
>>>> *
>>>> *
>>>> *Thanks,
>>>> *
>>>> *
>>>> *
>>>> *Duncan
>>>> *
>>>> *K2OEQ
>>>> *
>>>> *
>>>> *
>>>> *---
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