[GreenKeys] Catalog of Bell M28 apparatus

[Larry]

On 2/28/2014 7:54 PM, Nick England wrote:
> For your reading pleasure, I have scanned and posted Western Electric 
> RS Specification Handbook Section 23.
> This is like a 150 page sales catalog showing the characteristics of 
> all the various Bell Model 28 gear (along with Teletype component 
> numbers). Looks like a handy reference if you're trying to figure out 
> just what you've got. I ran OCR on it so it should be searchable. 20MB 
> pdf
> http://www.navy-radio.com/manuals/tty/28-we-rs.pdf
>
> It has entries like the following
> ------------
> 28S SET OF GEARS
> This is a set of nylon gears (TP161811) for use with the 28C typing 
> reperforator base to provide operation of the typing reperforator at 
> 60 words per minute.
> Set number TP161811 consists of:
> Motor Pinion part number TP161790 (44T)
> Countershaft Gear part number TP161784 (18T)
> -------------
> 28A TYPING REPERFORATOR BASE (Teletype LRB3)
> This is a typing reperforator base designed to mount a 28A or 28B 
> typing reperforator unit and a 28A Motor Unit for use in the 82B System.
> It is a receiving only base structure equipped with a three speed gear 
> shift mechanism designed to provide for operation at 60, 75, or 100 
> words per minute. The base includes a tape supply reel, 2 terminal 
> strips, a 16 point connector, a power switch, a male three point twist 
> lock power connector, a 4 ampere fuse, a low tape contact which 
> operates an indicating lamp visible through a plastic button in the 
> cover and an associated contact to operate the electrical service unit 
> signal bell on low tape. A matching female power connector is also 
> provided . The typing reperforator unit is driven from the gearshift 
> mechanism by a flexible timing belt.
> Dimensions of this base are 13 l/2" X 13" X 9" .
> Wiring is in accordance with BSP P34.308.
> -------------
> cheers
> Nick England K4NYW
> www.navy-radio.com <http://www.navy-radio.com>
>
>
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My KSR is made up of a 28E typing unit and LK-12-ARM base.  Hard o tell 
where that came from.

Larry
W0OGH

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