4 Dec
2024
4 Dec
'24
10:49 a.m.
On Wed, Dec 4, 2024 at 6:41 PM David Wade via cctalk
<cctalk(a)classiccmp.org> wrote:
Folks,
I have been trying to restore a manual card punch. The type with 12
"Buttons" or "Plungers" that operate a lever which pushes a punch
"pin"
through a die to create a hole in a card.
Its almost identical to this one:-
https://www.computinghistory.org.uk/det/38019/ICL-Hand-Key-Punch-Card-Machi…
I know it. Mine has an ICT (International Computers and Tabulators)
badge on the front
so despite lots of cleaning some of the pins stick down. Does any one
have any suggestions how to clean the small square slots?
From memory there's the stem of the key in circular holes. There's a
flat on the stem to engage the punch lever which is pivoted at the
left hand side. And the punch pin in the die block.
Do you know what is sticking?
There's a unit with 12 slots with ball bearings between some of them
to the left of the buttons.. It prevents you pressing more than 1
digit key down at once. That cam cause the levers to stick.
-tony