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GR900300103T1 - Return mechanism for an upright piano and means for its application - Google Patents

Return mechanism for an upright piano and means for its application

Info

Publication number
GR900300103T1
GR900300103T1 GR90300103T GR900300103T GR900300103T1 GR 900300103 T1 GR900300103 T1 GR 900300103T1 GR 90300103 T GR90300103 T GR 90300103T GR 900300103 T GR900300103 T GR 900300103T GR 900300103 T1 GR900300103 T1 GR 900300103T1
Authority
GR
Greece
Prior art keywords
jack
hammer
butt
key
rises
Prior art date
Application number
GR90300103T
Other languages
Greek (el)
Inventor
Fernand Kummer
Original Assignee
Fernand Kummer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fernand Kummer filed Critical Fernand Kummer
Publication of GR900300103T1 publication Critical patent/GR900300103T1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G10C3/161—Actions specially adapted for upright pianos
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G10C3/18—Hammers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C9/00—Methods, tools or materials specially adapted for the manufacture or maintenance of musical instruments covered by this subclass

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Stringed Musical Instruments (AREA)
  • Insulators (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Projection Apparatus (AREA)
  • Massaging Devices (AREA)

Abstract

This device for an upright piano has a second escapement jack (14). This jack is fixed to the check (9). It can swing about a pivot (16). At one end (15) it extends towards the hammer shank (3) and in the other direction has an end (21). A trigger stop (22), in the form of a button, is fixed to a bar (23) above the second jack. After the first jack (2) has thrown the hammer towards the string (4), it leaves its point of support beneath the butt, through the action of the set-off button (8) on the escapement lever (7). If after striking the string the hammer falls back faster than the key (1) rises, the first jack does not move back under the butt (11). The shank of the hammer then falls onto the end (15) of the second jack. It is then possible, even if the key is allowed to rise only very slightly, to throw the hammer back again by means of the second jack, even if the first jack has not moved back under the butt. At its end of travel, the end (21) of the second jack, which rises with the check, meets the stop (22), and the end (15) rises sharply and lets the hammer reach the end of its travel under its own momentum. A spring (24) restores the second jack to position as soon as pressure on the key is relaxed. <IMAGE>
GR90300103T 1986-01-17 1991-09-27 Return mechanism for an upright piano and means for its application GR900300103T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH17586 1986-01-17

Publications (1)

Publication Number Publication Date
GR900300103T1 true GR900300103T1 (en) 1991-09-27

Family

ID=4180973

Family Applications (1)

Application Number Title Priority Date Filing Date
GR90300103T GR900300103T1 (en) 1986-01-17 1991-09-27 Return mechanism for an upright piano and means for its application

Country Status (5)

Country Link
EP (1) EP0229746B1 (en)
AT (1) ATE89093T1 (en)
DE (2) DE3785680T2 (en)
ES (1) ES2014214A4 (en)
GR (1) GR900300103T1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003477A1 (en) * 1991-08-01 1993-02-18 Vladislav Vladimirovich Volkov Piano key mechanism
JPH0683326A (en) * 1992-08-31 1994-03-25 Yamaha Corp Action of upright piano
DE4414109A1 (en) * 1994-04-22 1995-10-26 Helmut Karl Repeat piano mechanism with key actuated lever
CN111531352A (en) * 2020-04-14 2020-08-14 陈忠 Rotary layering device for urheen barrel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE51541C (en) * H. L. HONE in Lexington, Kentucky Repetition mechanism for pianofortes
DE123696C (en) *
US1599743A (en) * 1923-10-01 1926-09-14 Carnes John Wilson Piano action

Also Published As

Publication number Publication date
ATE89093T1 (en) 1993-05-15
DE3785680D1 (en) 1993-06-09
DE3785680T2 (en) 1993-11-11
EP0229746A2 (en) 1987-07-22
EP0229746B1 (en) 1993-05-05
ES2014214A4 (en) 1990-07-01
DE229746T1 (en) 1990-09-06
EP0229746A3 (en) 1989-03-08

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