The Encyclopaedia Britannica: A Dictionary of Arts, Sciences and General Literature, المجلد 20Little, Brown, 1886 |
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الصفحة 237
... sleepers . The switch - rails are movable , and when worked inde- pendently are moved by rods to which heavy weights are attached , the function of the weights being to retain the points in one their normal position after they have been ...
... sleepers . The switch - rails are movable , and when worked inde- pendently are moved by rods to which heavy weights are attached , the function of the weights being to retain the points in one their normal position after they have been ...
الصفحة 240
... sleepers and then of steel flange rails ; but these have been gradually re- amount to about 63 per cent . of the gross earnings . On the New York Elevated Railroad the railway is supported on square wrought- iron lattice - work columns ...
... sleepers and then of steel flange rails ; but these have been gradually re- amount to about 63 per cent . of the gross earnings . On the New York Elevated Railroad the railway is supported on square wrought- iron lattice - work columns ...
الصفحة 241
... sleepers , a plan which has been materially improved by fishing the joints . " On the continent of Europe and in America , however , engineers have almost universally laid the flat - foot or flange rail ; and in France double - headed ...
... sleepers , a plan which has been materially improved by fishing the joints . " On the continent of Europe and in America , however , engineers have almost universally laid the flat - foot or flange rail ; and in France double - headed ...
الصفحة 242
... Sleepers . whence they are called clip fish - plates . The chairs are laid on transverse timber sleepers , ordinarily cut from Baltic redwood to a scantling of 10 inches wide and 5 deep , and 9 feet in length , - speaking precisely ...
... Sleepers . whence they are called clip fish - plates . The chairs are laid on transverse timber sleepers , ordinarily cut from Baltic redwood to a scantling of 10 inches wide and 5 deep , and 9 feet in length , - speaking precisely ...
الصفحة 243
... Sleepers . Fish- Length plates plain plain 311 plain 40 plain plain 26 , 29 , 32 plain plain plain plain 35 TABLE XXIX . - Specimen Standard Flange Rails ; in Cross Section . Inches . Inches . Inches . Dimensions of Rail . Width Width ...
... Sleepers . Fish- Length plates plain plain 311 plain 40 plain plain 26 , 29 , 32 plain plain plain plain 35 TABLE XXIX . - Specimen Standard Flange Rails ; in Cross Section . Inches . Inches . Inches . Dimensions of Rail . Width Width ...
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