[GreenKeys] nifty early Teletype applications booklet

[Duncan Brown]

On 08-Mar-14 16:54, Jim Haynes wrote:
> That's not the picture I was thinking of, but it does look like what
> is shown in the booklet.  I won't comment on the 20A but there are
> large differences with respect to the 21A, such as tape versus page
> printing.  The flat arrangement of the pullbars does look very 
> Kleinschmidt however.
>
> jhhaynes at earthlink dot net
>
I thought that the Morkrum 21A was a tape printer. Here is what Ransom 
Slayton says in his 1983 description of the machines in the Teletype 
Corp. Museum:

    /69. The Models 3-A, 3-B and 5 evolved into the Model 21-A, a
    multi-magnet tape printer that was used in goodly numbers on the
    Multiplex systems of the post-World War I era./
    /70. It was entirely electrical in operation, having selecting and
    transfer magnets and a solenoid powered printing and spacing drive./
    /71. Its relation to the previous printers is easily seen by placing
    it alongside the No. 5 while lying on its back. The typebaskets are
    identical, and many other parts are common. This was standard
    practice all down through the history of printing telegraph
    apparatus. use what worked already if you could, and invent whatever
    was not yet available!/

This implies that the tall printers in the Gould brochure are Teletype 
Model 5s??

Here is the Kleinschmidt Electric Co. Model 20A:



All solenoid driven, no motor; designed for multiplex operation. Label 
on cover says "The Western Union Telegraph Co.  manufactured by 
Kleinschmidt Electric Co. " (This unit came from the Teletype Corp. 
Museum; it is now on display at the AWA Museum.)

Duncan Brown, K2OEQ
USASA  31J

Antique Wireless Association Museum Asst. Curator, Commercial Equipment
(also Chief TTY operator & repairman)
http://www.antiquewireless.org/







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