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
GB27485/23A
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Individual
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Individual
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Publication date
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Publication of GB221464ApublicationCriticalpatent/GB221464A/en
221,464. Brown, T. P. Sept. 5, 1923, [Convention date]. Exhausting air; treadledevices.-The reservoir of a foot-operated suctiondevice of a player-piano is incapable of complete collapse and is such that no suddenly increased resistance is offered to the foot-operation. The movable leaf 16 of the reservoir is made yieldable, being composed of laminations, and as the reservoir collapses the leaf encounters a stop 25. The treadles 9 are pivoted on a U-shaped piece 11 which is itself pivoted at its ends 12. Supports 13 are carried on the cross-bar of the piece 11 and are angularly adjustable thereon being secured by screws 14.
GB27485/23A1923-09-051923-11-01Improvements in pneumatic player mechanism for musical instruments
ExpiredGB221464A
(en)