[GreenKeys] M28 and 35, Print Hammers

[Don Robert House]

The metal print hammers usually don't wear out unless the 
posistioning is out of adjustment.  The hammer needs to hit squarely 
on the pallets.  The other reason they become worn is if the hammer 
tension spring is set to 3 for multi-copy paper and is used for 
single ply paper.  Too many folks do this when they should be 
replacing the ribbon.  Eventually the springs in the typebox will 
also break and the type faces will become curved from hitting the 
platen too hard.

Don






>At 09:08 PM 2/28/02 -0800, you wrote:
>>I contacted Telemechanics.  They no longer have any print hammer heads.
>>
>>I too have a packet full of M28 print hammers.  Another good item 
>>is the print hammers for the typing reperforators.
>
>
>Don,
>
>I have four M-28 machines here (two stand-ups, one mite and a 
>compact.) and one M-28 typing reperforator.. I don't know the 
>condition of any of the print hammers..
>
>Do they wear out? Should I get some spares maybe?  I plan to run 
>these machines for some decades ahead. (occasionally, not 24/7!)
>
>Roy
>
>- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
>7130 Panorama Drive, Derwood MD 20855
>Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
>roy.morgan@nist.gov --
>
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-- 
--------------------------------------------------------
Don Robert House, N.S.E.
Curator, NADCOMM
North American Data Communications Museum
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