英语词汇“butterfly apparatus”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

†4. Coal Mining. A set of catches above a mine cage designed to open out so as to prevent the falling of the cage should the hoist fail. Frequently attributive, as butterfly apparatus, butterfly catch, etc. Obsolete.

ΘΚΠ

society > occupation and work > equipment > mining equipment > [noun] > cage > equipment used with

keep1849

butterfly1882

overwindera1884

shoe1883

slipper1883

kep1893

1882 Western Morning News 25 Nov. 5/6 The ascending cage was hurled into the headgear, smashing the butterflies and breaking the engine rope, and had it not been for the remaining butterflies the cage must have fallen to the bottom.

1887 Daily News 11 Jan. 2/7 The butterfly apparatus..had acted, but..the bolts..were torn away.

1909 Daily Chron. 8 Jan. 5/3 When the winding rope was detached the safety ‘butterfly’ catches failed to act.

单词	butterfly apparatus
释义	> as lemmas butterfly apparatus †4. Coal Mining. A set of catches above a mine cage designed to open out so as to prevent the falling of the cage should the hoist fail. Frequently attributive, as butterfly apparatus, butterfly catch, etc. Obsolete. ΘΚΠ society > occupation and work > equipment > mining equipment > [noun] > cage > equipment used with keep1849 butterfly1882 overwindera1884 shoe1883 slipper1883 kep1893 1882 Western Morning News 25 Nov. 5/6 The ascending cage was hurled into the headgear, smashing the butterflies and breaking the engine rope, and had it not been for the remaining butterflies the cage must have fallen to the bottom. 1887 Daily News 11 Jan. 2/7 The butterfly apparatus..had acted, but..the bolts..were torn away. 1909 Daily Chron. 8 Jan. 5/3 When the winding rope was detached the safety ‘butterfly’ catches failed to act. extracted from butterflyn. < as lemmas
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> as lemmas