Mechanical Memories Magazine

Issue: 2012-May - Issue 66

So in theory it's all quite simple, so why the difficulty? Note the connecting horizontal
lever that joins both coin mechanisms. So when in play you can see that turning either
smooth metal knob acts on a lot oflevers, switches and ratchets.
There are two design issues that add friction. One is the item marked sliding
edge. The act of turning the knob swings that edge down to engage with a horizontal
pin positioned on the vertical, spring loaded lever which holds the coin in place and is
also attached to the connecting horizontal lever that joins both coin mechanisms. That
in turn acts on a 'pull' which travels behind the lamp bracket and acts on the ratchet
that turns the drum. The leading edge is steep and if the ratchet isn't loose then those
two issues alone make it most difficult to complete the cycle.
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I stripped out every moving part and degreased, as old grease is sticky. I oiled all
moving parts, re-tensioned the ' pull' to the ratchet so it coincided with the switch
closing and the coin passing through each gate. Most importantly, I filed the sliding
edge so it was less severe. Making it more rounded did the trick.
Now both sides are smooth enough even for a child to operate. One thing I haven't
done yet but will do next is to glue strips of fine sandpaper between the vertical metal
wires on the wooden drum. That way the contacts will be self cleaning as the machine
is played.
I took a couple of months thinking this one out as I wanted to keep it all original
and didn't want to re-engineer anything. Especially being Oliver Whales I was sure
that enough original design had been put into it and it was only a case of tweaking
things.
It's now had three hundred pennies through it and if anything it's getting even
better. So if you fancy Kiss O Meter, don' t be put off by their reputation. If anyone
has one of these machines and wants to chat further, just mail me through
Pennymachines.co.uk or via this magazine.
Jeremy Clapham
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