[Bell Historians] Bell profiles

[David Bryant]

I believe Taylor's only usually lengthen the waists of the trebles of
heavier rings, hence they probably didn't at Towcester.

David

Bill and Margaret Hibbert wrote:
> 
> Is there anyone out there attempting to measure the shapes of bells.
> The
> only written reference to this I am aware of is Elphick's trapeziums
> (see
> Craft of the Bellfounder). I have recently taken measurements of two
> peals -
> Towcester and Imperial College - and I have uploaded plots of the
> trapeziums
> to the photos page. Unlike Elphick, as well as mouth radius, shoulder
> radius
> and shoulder height I have also tried to estimate crown height, though
> I am
> not yet happy with the way I do this. All the plots are normalised to
> unit
> radius at the lip.
> 
> The plot of Towcester shows that all twelve bells are remarkably
> similar in
> shape, despite the front four being almost a century newer. On the
> other
> hand, the two trebles at Imperial are much taller than the back eight,
> which
> is obvious as soon as you look at them in the tower.
> 
> I'm doing this, of course, as a precursor to investigating how profile
> affects sound and in particular partial intensity. Before doing this
> it
> would be interesting to know if anyone else is taking similar
> measurements.
> 
> By the way, if anyone doubts what enormous differences can be found in
> bell
> profiles and sizes, I suggest they look at the picture of the
> 'Gilletts'
> peal at Bow on Dickon Love's London bells website - especially the
> back five
> (three Gilletts, two Lester and Pack).
> 
> Bill H
> 
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