Improvements in Metal Frames for Pianofortes.
Year: 1895

page_text: Date of Application, 23rd Nov., 1895
Complete Specification Left, 21st Aug., 1896-Accepted, 7th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Metal Frames for Pianofortes.
JOHN JONES Nevendon Wickford Essex Pianoforte Moulding Maker do hereby
declare the nature of this invention to be as follows:-
My invention relates to improvements in metal frames for pianofortes as
follows
1
It consists of a metal frame cast a suitable shape and size. The upper part of
the said frame is formed of two plates of metal having a board of wood bolted or
otherwise fixed between the two said plates.
Holes are then drilled both through the metal and wood which are then tapped
for the wrest pins to screw in.
My invention provides a metal frame having a wrest plank constructed
substantially as above, the object being that a better hold is given of the wrest
pins so that the strings of the pianoforte are kept at their proper tension, thus
keeping the pianoforte in tune.
Dated this 23rd day of November 1895.
JOHN JONES.
COMPLETE SPECIFICATION.
Improvements in Metal Frames for Pianofortes.
JOHN JONES, of Mill House, East Horndon, Essex, and late of Nevendon,
Wickford, Essex Pianoforte Moulding Maker do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention relates to improvements in metal frames for pianofortes, and bas
for its object the construction of a metal pianoforte frame, the wrest pin portion of
which will have a better hold of the wrest pins, so keeping the strings at proper
tension, better than has hitherto been obtained and at a less cost.
My said invention is particularly described as follows:-I cast or otherwise
construct a metal frame of a suitable shape, shown in drawing Figure 1, marked A,
with the addition of the part shown (to a larger scale) in sectional drawing
Figure 2, marked B, being a metal plate in which I fix a board of wood of a
suitable shape and size C Figure 2. A & B are in one, thus B forms an integral
part of A.
I then fix a metal plate, shown marked D (by means of bolts or otherwise)
having a flange at top edge, marked D. D.
This said metal plate D. with flange D. D. fits over the parts B. and C so that
when the tension is on the strings of the pianoforte the metal plate and wood
board above referred to, will bind together so keeping the whole firm and rigid.
I then drill and tap the holes for the wrest pins to screw in through the metal
plate and wood board.
I also drill holes for bolts for the purpose of fixing the frame to the wood pianoforte
Case.

page_text: By constructing the metal frame as above set forth, a better rigidness is
obtained, also a better hold of the wrest pins. The strings are thus kept at a
proper tension necessitating only the minimum of tuning.
The bolts for the purpose of fixing frame to the wood pianoforte case are shown
in drawing marked Ė.
The holes for the wrest pins some of which are shown in drawing, are marked F.
in drawing, Figure 1.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A metal frame for pianofortes made substantially as herein above described,
consisting of metal frame A, with the addition of the part B in which is fixed a
board of wood C.
The same combined with metal plate D, having a flange D. D. which flange fits
over the parts B & C as set forth in drawings and for the purpose described.
Dated this the 20th day of August 1896.
JOHN JONES.