Identification and Purpose of Double-Ended New Haven

tinkerer1359

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New Haven Front.png New Haven Back.png New Haven Stamp.png

Hi All-

I have a tandem-wind New Haven balance wheel movement, but do not understand why it is designed as it is. The "front" looks fairly typical, except there are no winding arbors. The minute arbor extends out the "back", but has no method to connect anything to the long shaft (short of a set screw collar). There is an "hour" cannon on the back. The "back" also has the winding arbors.

How was this clock used? What connects to these features on the "back"? In what kind of case would this movement be found?

Many thanks for any help with this!

-Randy
 

shutterbug

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My initial thought is that it's a double wind time only movement. It does not appear to anything but a clock (time keeping movement).
 

tinkerer1359

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View attachment 544814
View attachment 544815

Agreed, it seems to be a time-only, tandem-wind movement. But the "minute" arbor coming off the back would rotate counter-clockwise, as would its "hour" cannon. Since the length of the rear arbor is quite long, and does not have any screw threads or hole for securing a hand (and it would be going backwards anyway), what is its original purpose?

That the winding arbors are on the side that does not easily support hand mountings confuses me greatly.
 

mauleg

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I'd wager that the long shaft on the back was for setting the time when it was installed on a case where the hands were not accessible.
 
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shutterbug

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In the early days, barbers liked backward running clocks in their shops so customers looking in the mirror could also read the time. There are quite a few backward movements out there yet, and you can even get backward running quartz if you want one.
 
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