GB1145029A - Improvements in or relating to keyboard operating apparatus - Google Patents

Improvements in or relating to keyboard operating apparatus

Info

Publication number
GB1145029A
GB1145029A GB24234/66A GB2423466A GB1145029A GB 1145029 A GB1145029 A GB 1145029A GB 24234/66 A GB24234/66 A GB 24234/66A GB 2423466 A GB2423466 A GB 2423466A GB 1145029 A GB1145029 A GB 1145029A
Authority
GB
United Kingdom
Prior art keywords
solenoids
solenoid
keys
key
tape
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB24234/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dale Electronics Inc
Original Assignee
Dale Electronics Inc
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 Dale Electronics Inc filed Critical Dale Electronics Inc
Publication of GB1145029A publication Critical patent/GB1145029A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10F—AUTOMATIC MUSICAL INSTRUMENTS
    • G10F3/00—Independent players for keyboard instruments

Abstract

1,145,029. Typewriters etc.; selective printing. DALE ELECTRONICS. 31 May, 1966 [23 Oct., 1963], No. 24234/66. Heading B6F. [Also in Divisions G4 and G5] A programmer for a piano, typewriter or other keyed instrument consists of a vacuum chamber 12 exhausted by a pump 36, access to the atmosphere being provided by apertures 21, one for each of the keys to be operated, which are opened selectively by an apertured tape 68 driven between rollers 64, 66. When air enters through one of the holes 21, unblocked by a hole in the tape 68, a leaf spring 23 is forced into contact with a contact bar 28 to complete a circuit for a solenoid which acts directly on the instrument key. The solenoid assembly (Figs. 2 and 3, not shown) may be mounted over the front of the keys or under the back and consists of two rows of solenoids, with one solenoid for each key. One row is mounted behind and slightly higher than the other. Both rows consist of two U- shaped channels which provide the magnetic circuits for all the solenoids in them and in which individual solenoids may be adjusted longitudinally and then clamped in position.
GB24234/66A 1965-10-23 1966-05-31 Improvements in or relating to keyboard operating apparatus Expired GB1145029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50304365A 1965-10-23 1965-10-23

Publications (1)

Publication Number Publication Date
GB1145029A true GB1145029A (en) 1969-03-12

Family

ID=24000536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24234/66A Expired GB1145029A (en) 1965-10-23 1966-05-31 Improvements in or relating to keyboard operating apparatus

Country Status (1)

Country Link
GB (1) GB1145029A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237357A2 (en) * 1986-03-14 1987-09-16 Yamaha Corporation Actuator for automatic performance piano

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237357A2 (en) * 1986-03-14 1987-09-16 Yamaha Corporation Actuator for automatic performance piano
EP0237357A3 (en) * 1986-03-14 1989-03-29 Yamaha Corporation Actuator for automatic performance piano

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