IMPROVEMENTS IN STEEL FRAMES AND PIN PLATES AS IN PIANOFORTES AND OTHER MUSICAL INSTRUMENTS WHEREBY THE INSTRUMENT IS RENDERED CAPABLE OF PRODUCING A MORE POWERFUL LONGER SUSTAINED TONE." USED دو
Year: 1882

page_text: LETTERS PATENT to Ellis Parr of 16 Long Lane Aldersgate Street London
Pianoforte Merchant and Joseph Rayner Gibson of 63 St Pauls Road
Camden Town in the County of Middlesex Electrician for an Invention of
PROVISIONAL SPECIFICATION left by the said Ellis Parr and Joseph
Rayner Gibson at the Office of the Commissioners of Patents on the
7th September 1882.
ELLIS PARR of 16 Long Lane in the City of London Piano forte Merchant and
JOSEPH RAYNER GIBSON of 63 St.Pauls Road Camden Town in the County of
Middlesex Electrician " IMPROVEMENTS IN STEEL FRAMES AND PIN PLATES AS
IN PIANOFORTES AND OTHER MUSICAL INSTRUMENTS WHEREBY THE
INSTRUMENT IS RENDERED CAPABLE OF PRODUCING A MORE POWERFUL
LONGER SUSTAINED TONE."
USED
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AND
In carrying out our invention we cause the steel "frames," and pin plates to
become powerfully and permanently magnetic, by passing them over, under, or,
otherwise touching, or near, the poles of a magnet, or magnets, which may be
either permanent, or induced by causing a current of electricity to pass through
coils surrounding iron cores, as with ordinary electro-magnets, or a series of
permanent, or electro-magnets may be fitted together in such a manner that they
would form a sort of brush, which, by being passed over the frame or pin plate with
a "stroking" movement, would render the steel frame, or pin plate very powerfully
and permanently magnetised
The plates and frames, could be magnetised by a prolonged contact with the
earth; by causing them to remain undisturbed in a particular position, or by any
other known method for inducing polarization in Steel
Frames, and Pin Plates magnetised as herein described may be used either
together or separately, as required, and are calculated to enhance the tone by the
displacement or agitation of the "magnetic field" by this means introduced into
the piano-forte or other musical instrument, at every vibration of the wires, reeds,
or other vibrators.
The process of magnetization renders the polarized parts less liable to deteriorate
through atmospheric influences, consequently protecting the instruments to an
extent and in a manner not hitherto attempted.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Ellis Parr and Joseph Rayner Gibson in the Great Seal Patent
Office on the 7th March 1883.
ELLIS PARR of 16 Long Lane in the City of London Merchant and JOSEPH
RAYNER GIBSON of 63 Saint Pauls Road Camden Town in the County of
Middlesex Electrician "IMPROVEMENTS IN STEEL FRAMES AND PIN PLATES AS
USED IN PIANO FORTES AND OTHER MUSICAL INSTRUMENTS."
In carrying out our invention we cause the Steel frames and pin plates to
become powerfully and permanently magnetized by passing them over, under, or
otherwise touching or near the poles of magnet or magnets, which may be either
permanent or induced by causing a current of electricity to pass through coil;
surrounding iron cores, as with ordinary electro-inagnets. Or a series of permanent
or electro-magnets may be fitted together in such a manner that they would form
a sort of "brush," which, by being passed over the frames or pin plates with a
stroking" movement, would render them powerfully magnetic.
The frames and pin plates may be magnetized by any other known means for
inducing polarization in steel, Frames and pin plates magnetized as herein described,
may be used either together or separately as required, and are calculated to
enhance the tone by the displacement or agitation of the magnetic field, by. this
means introduced into the piano-forte or other musical instrument, at every vibration
of the wires, reeds, or other vibrators.
The process of magnetization renders the polarized parts less liable to deteriorate
through atmospheric influences; consequently protecting the parts most likely to be
affected by these causes.
Having now particularly ascertained and described the nature and object of our
Invention, and the manner in which the same is to be performed or put into
practice We hereby declare that we Claim in regard to the said Invention.
The magnetization of Steel Frames and Pin Plates as used in Piano-fortes and
other musical Instruments, substantially as herein set forth and described.
In witness whereof We the said Ellis Parr, and Joseph Rayner Gibson, have
hereunto set our hands and seals this Seventh day of March in the year of
our Lord One thousand eight hundred and eighty three.
ELLIS FARI
(1.8.)
JOSEPH RAYNER GIBSON (L.S.)