 | 1875 - 762 страница
...or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft, suitably adapted to the free passage of sound, through...of the shaft or slope ; also, the ordinary means of signalling to and from the top and bottom of the shaft or slope, and an approved safety-catch, and... | |
 | Pennsylvania. Laws, statutes, etc - 1877 - 650 страница
...tubes to vide and maintain a metal tube from the top to the bottom of ueprovuiea. the slope or shaft, suitably adapted to the free passage of sound, through...ordinary means of signaling to and from the top and Als0j means0( Sig. bottom of the shaft or slopo, and an approved safety catch n»u«>8and sufficient... | |
 | Tennessee - 1881 - 386 страница
...calculated and adapted to the free passage of sound therein, through which conversation may be held by and between persons at the bottom and at the top of the shaft or slope, and also some modern practical means for signaling from tub and to the top of the shaft from the bottom... | |
 | 1882 - 424 страница
...human voice cannot be distinctly heard, the owner or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft, or telephone...slope ; and in the top of every shaft an approved safety-gate and an approved safety catch and sufficient cover overhead on every carriage used for lowering... | |
 | Iowa. General Assembly - 1882 - 700 страница
...owner or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft suitably adapted to the free passage of sound through...or slope; also the ordinary means of signaling to ana from the top and bottom of the shaft or slope, and an approved safety-catc.h, and sufficient cover... | |
 | Henry Martyn Chance - 1883 - 716 страница
...or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft, suitably adapted to the free passage of sound, through...from the top and bottom of the shaft or slope, and an approved safety catch and sufficient cover overhead on every carriage used for lowering and hoisting... | |
 | 1883 - 340 страница
...operator, lessee or agent shall provide and maintain a metal tube from the top to the bottom of the shaft suitably adapted to the free passage of sound through...persons at the bottom and at the top of the shaft; also, the ordinary means of signaling to and from the top and bottom of the shaft and an approved safety... | |
 | Kansas - 1883 - 306 страница
...be vide and maintain a metal tube from the top to the bottom talk f through. Of (.jje shaft or slOpe suitably adapted to the free passage of sound, through...conversation may be held between persons at the bottom and top of such shaft or slope, and there shall also be maintained the ordinary means of signaling to and... | |
 | Iowa. General Assembly - 1884 - 1028 страница
...or agent shall provide and maintain a metal tube from the top to the bottom of the slope or shaft, suitably adapted to the free passage of sound, through...signaling to and from the top and bottom of the shaft of slope, and an approved safety catch, and sufficient cover overhead on every carriage used for lowering... | |
 | Pennsylvania. Laws, statutes, etc - 1885 - 580 страница
...operator, lessee or agent shall provide and maintain a metal tube from the top to tho bottom of the shaft, suitably adapted to the free passage of sound, through...held between persons at the bottom and at the top of tho shaft, also the ordinary means of signaling to and from the top and bottom of the shaft, and an... | |
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... suitably adapted to the free passage of sound, through which conversation may be held between persons at the bottom and... 
