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Патент USA US2119598

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June 7, 1938.
A. H. MORSE
2,119,598
PIANO KEY CONNECTION
Filed Aug. 24, 1936
AZTHUE h’. MORSE
5%
2,119,598
Patented June 7, 1938
UNITED STATES PATENT OFFIQE
2,119,598
PIANO KEY CONNECTION
Arthur H. Morse, Cincinnati, Ohio, assignor to
The Baldwin Company, Cincinnati, Ohio
Application August 24, 1936, Serial No. 97,519
6 Claims. (Cl. 84—240)
In small upright pianos of a height of forty partly below the level thereof, including a hon?
inches and under it is necessary to have part of zontally disposed wippen below the level of said
the piano action below the level of the keys, which key; and linkage connection between the ver~
necessitates an action and connection to the key
5 that is much different from the conventional
piano action.
The object of my invention is to provide a
connection between the piano key and the wippen
of the piano action in a small upright piano
that will have a minimum of friction and be
easy to regulate.
In the drawing, Fig. 1 is a view of the piano
action and key when they are at rest.
Fig. 2 shows the action and key when the key
1 a is depressed.
Fig. 3 is a detail of the wippen showing the slot
in which the link is pivoted.
20
Fig. 4 is a detail of the link.
Fig. 5 is a detail of the bell crank.
Fig. 6 is a modi?cation of the link.
tical arm of said bell crank and said wippen,
whereby a playing motion of said key operates
the said action.
2. In an upright piano, a horizontally disposed,
intermediately pivoted key extending in a for
ward-rearward direction of the piano; a rail lo
cated above and behind said key; a bell crank, 10
pivoted on said rail, disposed so that one of its
arms depends behind said key and the other arm
extends forward substantially horizontally over
said key so as to be moved from underneath by
said key in a playing motion thereof; an action
located behind said key at least partly below the
level thereof, including a horizontally disposed
wippen below the level of said key; and a link
connecting the depending arm of said bell crank
and a free part of said wippen, whereby a playing 20
sisting of a wippen 3, jack 4, let-off button 5,
motion of said key operates the said action.
3. In an upright piano, a horizontally disposed,
intermediately pivoted key extending in a for
ward~rearward direction of the piano and includ
25 back check 6, catch 1, ?ange rail 8, butt 9, ham
mer l0 and damper l l associated with a string I2.
ing a regulating screw attached to said key so as
to extend upwardly therefrom near the rear end
For clarity there are shown only certain parts
essential to this invention, such as a key I which
is pivoted on a balance rail 2 and an action con
As the action is placed partly below the level of
the key I, a link I3 and bell crank M are provided
to connect the key I with the wippen 3. The bell
30 crank I4 is pivoted on a rail l5 that can be con
nected to the ?ange rail 8 by brackets, not shown.
The link I3 is pivoted in the slot N5 of the wip
pen 3 at one end and straddles the bell crank [4
at the other end. The link shown in modi?ed
35 form in Fig. 6 can be hooked in suitable holes in
the wippen 3 and bell crank l4.
On the key I is a capstan screw I‘! set to en
gage the bell crank I4. When the key I is de
pressed at the front end the capstan l'l raises the
40 one end of the bell crank l4 causing link l3 to
raise the wippen 3 which in turn operates the
other action parts in the same manner as in a
standard action.
Modi?cations in shape may be made but what
45 I claim as my invention is:
1. In an upright piano, a horizontally disposed,
intermediately pivoted key extending in a for
thereof; a rail located above and behind said key;
a bell crank, pivoted on said rail, disposed so that
one of its arms depends behind said key and the
other arm extends forward substantially hori 30
zuntally over said key to bear solely by pressure
on said regulating screw; an action located behind
said. key at least partly below the level thereof,
including a horizontally disposed wippen below
the level of said key; and a link connecting the 35
depending arm of said bell crank and a free part
of said wippen, whereby a playing motion of said
key operates the said action.
4. In an upright piano, a horizontally disposed
key extending in a forward-rearward direction of 40
the piano, a bell crank, movable on a pivot near
said key, disposed so that one of its arms is sub
stantially horizontal so as to be moved by said
key in a playing motion thereof, and the other
arm of said bell crank depends from said pivot; 45
an action located at least partly below said key,
including a horizontally disposed wippen below
ward-rearward direction of the piano; a rail lo
cated above said key near the rear end thereof;
50 a bell crank, pivoted on said rail, disposed so
that one of its arms is substantially horizontal
over said key so as to be moved from underneath
the level of said key; and a link connecting the
depending arm of said bell crank and a free part
of said wippen, whereby a playing motion of said 50
key operates the said action.
5. In an upright piano, a horizontally disposed,
by said key in a playing motion thereof, and the
other arm of said bell crank is substantially ver
66 tical; an action located behind said key at least
ward-rearward direction of the piano; a bell
crank disposed so that the free end of one of 56
intermediately pivoted key extending in a for
2
2,119,598
its arms is located above the rear end of said
key so as to be moved from underneath by said
key in a playing motion thereof, the said arm ex
tending rearwardly from its free end to a station
ary pivot, and the other arm of said bell crank
extending from said pivot downwardly behind
said key; an action located behind said key at
least partly below the level thereof, including at
a lower level than said key a wippen pivoted rear
wardly on a stationary pivot so as to extend
forwardly therefrom; and a link connecting and
movably pivoted to a forward part of said wippen
and the lower end of said downwardly extending
bell crank arm, whereby a playing motion of said
15 key operates the said action.
6. In an upright piano, a horizontally disposed,
intermediately pivoted key extending in a for
ward-rearward direction of the piano; adjusting
means on said key near the rear end thereof
and including an upwardly exposed portion; a bell
crank disposed so that the free end of one of its
arms is located above the rear end of said key
so as to bear solely by pressure on the said up
wardly exposed portion of the said adjusting
means, the said arm extending rearwardly from
its free end to a stationary pivot, and the other
arm of said bell crank extending from said pivot
downwardly behind said key; an action located
behind said key at least partly below the level 10
thereof, including at a lower level than said key
a wippen pivoted rearwardly on a stationary pivot
so as to extend forwardly therefrom; and a link
connecting and movably pivoted to a forward
part of said wippen and the lower end of said 15
downwardly extending bell crank arm, whereby
a playing motion of said key operates the said
action.
ARTHUR H. MORSE.
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