File:Broadwood grand square action.svg

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DescriptionBroadwood grand square action.svg	Double action with check from Broadwood & Sons square piano
Date	6 June 2007
Source	Own work
Author	Mireut

key (1)
grasshopper or base (2)
fly or jack (3)
regulating screw and button (4)
underhammer (5)
hammer rail (with leather hammer hinges) (6)
hammer shank (7)
hammer head (8)
backcheck and "stay" (patented for squares by J. S. Broadwood, October 6, 1825) (9, 9b)
damper lever (10)
damper lift rail (11)
damper (12)
Source of parts names, Faust, Oliver C. The Piano Tuner's Pocket Companion, for Use of Pupils of the Faust School. Compiled From the Lectures of Oliver C. Faust. New York: C. N. Potter, 1899. (reprint) p.77

日本語: 1) 鍵, 2) グラスホッパー（ベース）, 3) フライ（ジャック）, 4) 調整ねじおよびボタン, 5) アンダー・ハンマー, 6) ハンマー・レール（革製のハンマー・ヒンジ付き）, 7) ハンマー・シャンク, 8) ハンマー・ヘッド, 9) バックチェック, 9b) 「ステイ」（ブロードウッドの1825年特許）, 10) ダンパー・レバー, 11) ダンパー・リフト・レール, 12) ダンパー

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Piano

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