London Journal of Arts and Sceinces: And Repertory of Patent Inventions, Tom 4William Newton, Charles Frederick Partington W. Newton, 1856 |
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Strona 148
... centres c , c . The holders are placed opposite to each other , as represented . d , is the pivot or centre of the levers . When these instruments are used for holding ropes , wires , or bars , a hole may be formed at the ends of the ...
... centres c , c . The holders are placed opposite to each other , as represented . d , is the pivot or centre of the levers . When these instruments are used for holding ropes , wires , or bars , a hole may be formed at the ends of the ...
Strona 201
... centre of gravity of the full waggon shall be so much before the centre of the centre of gravity of the tip , that it shall cause the fore part of the waggon to fall , and thereby tip the coal out of the waggon ; and that when the coal ...
... centre of gravity of the full waggon shall be so much before the centre of the centre of gravity of the tip , that it shall cause the fore part of the waggon to fall , and thereby tip the coal out of the waggon ; and that when the coal ...
Strona 351
... centre line of the blocks , and are provided with counterbalance weights , by which they are detached from the rings ... centre on which the hook turns , placed slightly aside from the centre line of the block , to increase the leverage ...
... centre line of the blocks , and are provided with counterbalance weights , by which they are detached from the rings ... centre on which the hook turns , placed slightly aside from the centre line of the block , to increase the leverage ...
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