Saturday, February 16, 2008

Progress...

I am attempting to drive to getting the clock to actually ticking so I continued work on the escapement assembly.  Today I made two simple pieces.  The first was an "L" shape at the bottom of the verge and foliot.  This piece has two purposes.  The first is to hold the verge and foliot in place as it comes in contact with the crown wheel.  It is also a bit of a safety feature.  If the wire holding the verge and foliot breaks, this piece helps to keep it from falling through the clock.  It was a pretty simple piece and these pictures show it being made.

EscapementBottom1

EscapementBottom2

This final picture shows it riveted to the frame.  I have the verge and foliot resting in it.

EscapementBottom3

  The next piece is mildly more complicated.  It is a "U" shaped piece of metal.  It is designed to hold one end of the crown wheel arbor.  Because of the placement of the verge and foliot, the end of the crown wheel arbor cannot hook into the frame.  This piece is designed to wrap around the verge and foliot and provide the arbor with someplace to rest.

  I started by rounding the end of a piece of metal.

CrownArborSupport1

The center part is then thinned out.

CrownArborSupport2

After some more thinning, a hole is punched and drifted to form the hole where the arbor will connect.

CrownArborSupport3

The other end is spread out and I punch two holes for rivets.

CrownArborSupport4

I give it the "U" shape.

CrownArborSupport5

The piece is riveted to the frame.  I used the old arbor from the great wheel to show how it works.  Notice that the end of the arbor goes into the piece rather than the frame.  This allows the verge and foliot to be in its proper positiong.

CrownArborSupport6

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