[GreenKeys] Can you identify the equipment in this picture?

[Duncan M. Brown]

The "Iron Horse" tape punch is generally known as the "GPE" (for "green
perforator", but all the ones I have seen have been black). The unit we
have at the AWA Museum has a label that says "200BA" on it.

There is a better picture at the Office Museum site: 
http://www.officemuseum.com/IMagesWWW/1939_Sending_a_telegram_on_multiplex_m
achine_Can_NatTelegraph_Can_Sci__Tech_Museum_CN000701.jpg

Note that the tape reader looks like the standard M14 type, but there is no
distributor (therefore it is not a "T-D").  The Multiplex System used
parallel, not serial data transmission, so the tape reader read all five
bits at once.  When serial data transmission became the standard, Teletype
Corp. added the big motor and "distributor" to do the parallel to serial
conversion.  Just as "teletype" became the generic term for any
teletypewriter, the term "transmitter-distributor" became the general
description for any tape reader, even ones without a distributor.  Even the
technical manuals for the military Kleinschmidt Labs machines (TT-76, etc)
refer to the tape reader as a "T-D".

Have fun,

Duncan
K2OEQ


> [Original Message]
> From: Don Robert House <k9tty at dls.net>
> To: John Nagle <nagle at animats.com>
> Cc: <greenkeys at mailman.qth.net>
> Date: 22-Feb-10 01:07:44
> Subject: Re: [GreenKeys] Can you identify the equipment in this picture?
>
> I can identify the equipment to some degree.
>
> The young woman with the checked dress with her back to the camera is  
> an operator of the "Iron Horse" a magnet operated tape punch.
> I have one here in nice operating condition.  Jim Haynes knows the  
> designation.  The young woman looking at the camera is also a punch  
> operator.
> The lady at the left with her back to the camera is sitting in front  
> of a model 10 page printer.  Looks like a cover over the keyboard.
>
> The lady next to the man standing is sitting in front of another early  
> page printer, similar to the one I have here that no one has been able  
> to identify.
> I believe the tape transmitter is blocked from view.  You can see some  
> reels next to the mystery printer.
>
> Don
> K9TTY
>
>
> On 21 Feb 2010, at 11:54 PM, John Nagle wrote:
>
>     This picture is from the online Office Museum, and shows a Western  
> Union
> office in Omaha, NE.
>
>
http://www.officemuseum.com/IMagesWWW/Office_with_Unidentified_Keyboard_Mach
ines.jpg
>
> It's a very high resolution picture of what appears to be very early  
> printing
> telegraph equipment.  This gear looks earlier than the Model 12, yet
> it doesn't seem to be early Morkrum equipment.  There's are two keyboard
> units and two page printing units, each with its own operator.  No sign
> of paper tape.
>
> There's an equipment table with huge electromagnetic tuning forks,
> and what looks like eight polar relays.  This is probably a
> multiplexing system.
>
> 					John Nagle
>