Brinsmead Piano (was Soundboard grain angle)

John Delacour JD@Pianomaker.co.uk
Wed, 5 Dec 2001 11:31:03 +0000


At 8:48 AM +0000 12/5/01, Phillip L Ford wrote:

>John,
>You've mentioned this Brinsmead piano a few times now.  I've never 
>seen one.  Could you give us a bit more description of this beast. 
>Particularly some details about the rib placement. By the way, is 
>this a straight (flat) strung piano?

It would take me a long time to sing all Brinsmead's praises.  To me 
he is practically the only English grand maker worthy of mention. 
Kirkman's left the scene too early.  The golden years from Brinsmead 
were during the lifetimes of John, Tom and Edgar and ran from about 
1870 to 1905, so the first really nice pianos were straight strung 
and they continued making s/s uprights as well as overstrungs till 
the turn od the century.  I have an 1880 straight strung upright at 
home which is priceless as a piece of furniture (faultless burr 
walnut veneer on a solid walnut substrate with Adam satinwood inlay 
-- even the veneer on the back of the panels is good) and very 
interesting as regards piano design, with an adjustable crown 
soundboard and very elaborately worked out string scaling, bridges 
and terminations.

But it is the grands that I rave about.  I mentioned the 'sostenente' 
soundboard some while ago and said I planned to look into this at the 
Patent Office.  Well I was there the other day for several hours 
looking for various patents but this was one of several that I could 
not locate, much to my annoyance.  One or two books from crucial 
years were misplaced and it was time to get the coach home before I 
was told they had duplicates.  So I'm no wiser yet as to the specs 
for this design and the only piano I can get at for a thorough 
examination is over the water in Cherbourg.

I made some rough sketches recently from a nearer example but could 
not impose on the lady long enough to make detailed measurements, let 
alone drive my invisible needles through the board or take in my 
three fathom calipers!  Brinsmead's ribs are of soundboard wood and 
in three lengths glued together with the two outer lengths deeper 
than the central length and possibly with the grain differently 
disposed.  My notebook is at the shop but I think the section is 
about 25mm neglecting the 'trough'.  The ribs radiate from a point 
some distance in front of the keyboard -- again not enough time to 
calculate where.  As to the quality of the "tonewood" -- which we all 
know is a nonsense :-) -- A1 Swiss well quartered and finished very 
bright.  That's only part of the story, of course, because to 
discover the reason for its remarkable behavior I need to look at all 
the other factors, and as you know, you set out with an apparently 
simple investigation in view but it can take ages to make these 
investigations thoroughly and get accurate data.

The outer rim of the overstrung Brinsmead grands is continuous and 
made of 1/4" laminae of solid Spanish mahogany unveneered.  The top 
is of Spanish mahogany but also veneered.  His scales were carefully 
calculated and "sensible", though the bass singles/bichords break is 
in an old-fashioned position (forgive the technical jargon).  From at 
the latest 1880 onwards, Brinsmead had a special steel wire made of 
extremely high quality and very tough.  Whether he had Poehlmann make 
it I don't know but it's as good as Poehlmann's and is coppered and 
nickeled so that it really will not rust - nothing at all like modern 
Röslau plated ploughsteel.  It is the best wire I've ever known and 
I've never seen it on anything but Brinsmeads.  I just hate having to 
replace it, as one must of course.

The reason there are relatively few Brinsmead grands about is 
probably, I think, because the patent action wears and gets heavier 
and heavier putting more strain of the centres at the same time and 
leading eventually to total unplayability.  The girl  from Cherbourg 
is at the Royal Academy in London and hammers hell out of this 
machine, which she adores -- her father is in our line so it's up to 
him.  Technicians don't know how to deal with the action and condemn 
it, and with it the piano.  I was talking to him the other day and am 
insisting he bring the action over for a revision.  This girl is to 
be a pupil of Marta Argerich's, so that joanna's going to need some 
bones.

JD






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