Improvements in Upright Pianoforte Actions.
Year: 1892

page_text: Date of Application, 6th Sept., 1892
Complete Specification Left, 6th June, 1893-Accepted, 8th July, 1893
PROVISIONAL
SPECIFICATION.
Improvements in Upright Pianoforte Actions.
I THOMAS LEGG of 1 Anglers Lane, Kentish Town, in the County of Middlesex,
Pianoforte Action Maker, do hereby declare the nature of this invention to be as
follows:-
The objects of the invention, are amongst others, to attain proficiency of
repetition and "damping," also in some cases to secure greater efficiency and
facility for effecting regulation of the "action" parts from the "top" of the key,
whilst employing parts capable of production at an economical rate.
Upon the hammer rail is mounted a flinge in which is centred the lever carrying
the under damper head, at its upper part, and at its lower part an incline or
abutinent against which sets the adjustable button carried by a screw regulation
pin mounted in a block mounted on a lever hinged to a flinge also carried by the
hammer rail, and this block carries beneath it a regulation button which is seated
on the top of the key lever-or the usual or other convenient regulation means
may here be used. The hammer, jack, check and set off parts may be of ordinary
or convenient form.
Or, instead of a block mounted on the lever hinged below to the hammer rail,
that lever may be hinged to the "jack" and a pin projecting from the lever acting
on a clothed end of the damper lever, or vice versa, may be employed.
If desired to employ a "prolonge" this may be by usual means and the regulation
key button screwed instead to the foot of the "prolonge."
According to another modification to the hammer, or butt flinge (or its equivalent)
referred to, is attached, or formed, a dependent part constructed as an incline,
against which a regulating button, mounted on a pin seated in the jack or sticker
takes its scat and serves to regulate the "set off," this dependent part also carries
a hinged piece in which is screwed so as to be capable of regulation a pin carrying
a button which takes a bearing against or sets off on the tail of the damper lever,
the tail of the last named pin passes through and guides the "jack or sticker.
The "loud" pedal in this and other of the actions may be operated so as by a
bar suitably clothed passing across the instrument behind and so as to press on the
damper levers and lift the dampers off the strings.
The said bar would be supported by hinged "dummies." This bar will be
actuated by a suitable crank or eccentric operated by the pedal stick.
Or the damper lever may be carried in a flinge above and the hammer butt in a
flinge below, on the hammer rail, a centred lever (suitable clothing being intervened)
in the butt flinge acting on the tail of the damper lever above and being acted on
below by the jack or sticker for the set off by a button.mounted on a pin screwed
into said centred lever and passing at its other end through the jack or sticker and
this pin and button thus serve to effect and regulate the "set off" and guidance of
the sticker or jack and the operation of the damper.
I have described the foregoing arrangements more particularly as having, the.
check applied,"inside" but they may be arranged with "outside" check and the
arrangements be modified accordingly.
Duted the 6th.dex of Cantember 1909

page_text: COMPLETE SPECIFICATION.
Improvements in Upright Pianoforte Actions.
I, THOMAS LEGG of 1 Anglers Lane, Kentish Town, in the County of Middlesex,
Pianoforte Action 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:
"The objects of the invention, are amongst others, to attain proficiency of
repetition and "damping," also in some cases to secure greater efficiency and
facility for effecting regulation of the "action" parts from the "top" of the key,
whilst employing parts capable of production at an economical rate.
DESCRIPTION OF THE DRAWINGS.
The various figures 1 to 11 shew respectively each in side view various modifica-
tions of arrangement of the action adapted to carry out the invention.
Referring to Figure 1 upon the hammer rail a is mounted a flinge in which is
centred the lever e carrying the under damper head cat its upper part, and at its
lower part an incline or abutment c² against which sets the adjustable button d¹
carried by a screw regulation pin d mounted in a block mounted on a lever ³
hinged to a flinge d also carried by the hammer rail. a, and this block carries
beneath it a regulation button d which is seated on the top of the key lever e, or
the usual or other convenient regulation means may here be used. The hammer,
jack, check and set off parts may be of ordinary or convenient form.
Or, referring to Figs. 2 and 3 (which shew the parts respectively "in rest" and
"in check") instead of a block mounted on the lever d³ hinged below to the
hammer rail a, that lever d³ may be hinged to the "jack" and a pin g projecting
from the lever d³ acting on a clothed end c³ of the damper lever c, or vice versa,
may be employed..
Referring to Figures 4 and 5 if desired to employ a "prolonge" this may be by
usual means such as shown by Fig. 4, or as in Fig. 5, the regulation key button d³
may be screwed instead to the foot of the "prolonge" f. Fig. 4 shows how a
combined arrangement of over and under damper head may be applied to the
lever c
b
Referring to Figs. 6 and 7, according to another modification; to the hammer,
or butt flinge (or its equivalent) referred to, is attached, or formed an enlarge-
mentor dependent or partly dependent part constructed as an incline, against
which a regulating button de mounted on a pin d seated in the jack or sticker f
takes its seat and serves to regulate the "set off" this part h also carries a hinged
piece in which is screwed so as to be capable of regulation a pin h² carrying a
button which takes a bearing'against the hammer rail a, or if desired' the damper
lever C; such as shown in Fig 4, may be introduced, the parts hand a' and this
button would then set off on the tail of the said damper lever, the tail of the
last named pin passés through and guides the "jack "'or sticker' as' shewn.".
"
In Fig. 8 the set off incline is hinged to a T flinge 6 which serves also for the
hammer butt o, and the button d of the pin d' in pressing on the incline presses
out the top part of the centred piece h. The button on the pin d serves to
regulate the lower end of the lever c and to afford lateral support to the stickerf.
The "loud" pedal in this and other of the actions may be operated as indicated
in Fig. 4 so as by a bar i suitably clothed passing across the instrument behind and
so as to press on the damper levers c and lift the dampers off the strings. The
said bar'i would be supported by hinged "dummies," or slung on arms i formed by
bending up the ends of the bar and passing screws therethrough into the
standards, the bar i may be operated by usual connections to the pedal stick
connected to the pin, with the aid of a suitable crank or eccentric. F

page_text: Referring to Figs. 9 and 10 which show respectively the parts "in rest" and
"in check," here the damper lever c is carried in a separate flinge kabove and
the hammer butt o in a flinge b below, on the hammer rail a, a centred lever m
(suitable clothing being intervened) in the butt flinge b acting on the tail c¹ of
the damper lever c above the lever m, being acted on below by the jack or sticker f
for the set off by the intervention of a button n mounted on a pin n screwed into
said centred lever m and passing at its other end through the jack or sticker and
this pin n' and button n thus serve to effect and regulate the "set off" and guidance
of the sticker or jack and the operation of the damper c'.
I have described the foregoing arrangements more particularly as having the
check applied "inside" but they may be arranged with "outside" check and the
arrangements be modified accordingly, this I have indicated by means of Fig. 11.
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 :-
In an upright pianoforte action :
1. The arrangement and use of an adjustable regulating pin d for regulating the
dampers applied as and for the purpose set forth with reference to Figs. 1, 4, 5, 8
and 11.
2. The arrangement and use of an adjustable pin g for regulating the dampers
applied as and for the purpose set forth with reference to Figs. 2 and 3.
3. The construction arrangement and use of the parts h, d³ and d' as and for the
purpose set forth with reference to Figs. 6 and 7.
4. The various arrangements or combinations of parts applied as and for the
purposes set forth and shewn by the respective drawings.
Dated the 6th day of June 1893.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.