[GreenKeys] Dash Pots

Mon, 5 Aug 2002 16:19:56 -0700

Most likely the answer was simple; all of these parts look like small 
pots when they are off the machine.  The carriage "dashes" to the 
left when it is returned.  In the machines like the 12 and the 26 the 
platen dashes while the carriage stays put.

I doubt anyone really knows where the term really came from.

Don

>Good question!  While going through the adjustment manual, I often wondered
>who sat around and thought up the names for those parts.  They were
>certainly a lot more original than the "alphabet soup" method of naming
>things today.
>
>PCRRD - Pneumatic Carriage Return Retardation Device?
>
>PDW
>
>
>
>----- Original Message -----
>From: "John Brancich" <[email protected]>
>To: <[email protected]>
>Sent: Monday, August 05, 2002 6:37 PM
>Subject: Re: [GreenKeys] Model 19 character spacing
>
>
>>  Thank you Paul.  That was it, the left margin adjust screw.  There's no
>>  bounce on the return, either.  I've always wondered what exactly the dash
>>  pot does, and now I'm starting to understand it.  Where did they get a
>>  name like "dash pot" though?
>>  John, NJ0N
>>
>>
>>  > On the left of the carriage is an adjustable "stud" that operates the
>>  > carriage return lock lever.  When the lever operates, it re-engages the
>>  > clutch that drives the carriage spacing.  (I'm doing this from memory
>>  > as the teletype is home)  When the carriage is released, it should rest
>>  > against the fully operated lever.  The problem is that if the stud is
>>  > extended too far it may lock the clutch before the carriage gets to
>>  > it's most left position.  Considering the first two columns: extending
>>  > the stud will eventually allow the carriage to rest cleanly at the
>>  > second column. Shortening the stud will cause it to rest cleanly at the
>>  > first column.
>>  >
>>  > Make sure the dashpot is doing its thing.  Holding the carriage release
>>  > in and letting the carriage go from its far right position  note that
>>  > it comes to a clean quick stop without bouncing.
>>  >
>>  > PDW
>>  >
>>
>>
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-- 
--------------------------------------------------------
Don Robert House
North American Data Communications Museum
URL: http://www.nadcomm.org
Computer Museum of America
URL: http://www.computer-museum.org