[GreenKeys] Clutch design for Model 28 family?

[Jerry Murphy]

That is - as the description says - a codebar clutch for a Model 28
typing unit.  The codebar clutch is tripped by a lobe on the selector
clutch as the selector cam reaches the end of its revolution.  The cam
on the codebar clutch trips both the function clutch and the typebox
clutch.  Teletype's "all metal clutch" was a very clever but robust
design.  Proper material selection was crucial to its success.

I'd love to have it if they were offering it at 1/10th the asking price.

Jerry Murphy




-----Original Message-----
>From: John Nagle <nagle at animats.com>
>Sent: Jun 23, 2015 11:57 PM
>To: greenkeys at mailman.qth.net
>Subject: [GreenKeys] Clutch design for Model 28 family?
>
>This little demo model of a "code bar clutch" is on Ebay:
>
>http://www.ebay.com/itm/CODE-BAR-CLUTCH-Salesman-Sample-Display-mechanism-teletype-/221807200310
>
>Is that a Model 28 family part?
>
>One of the claimed advantages of the Model 28 line was that the
>oiled felt slip clutches of the older machines had been replaced with
>a metal-to-metal clutch.  Is this it?
>
>			John Nagle