The Technical World Magazine, Volume 7Technical World Company, 1907 |
From inside the book
Results 1-5 of 93
Page 43
... , for instance , the firing of a revolver , operation and stopping of a ventilating fan , lighting and extinction of 000 incandescent lamps , energizing of an electro - magnet. WIRELESS CONTR 43 33333 CONTROL OF MECHANISMS.
... , for instance , the firing of a revolver , operation and stopping of a ventilating fan , lighting and extinction of 000 incandescent lamps , energizing of an electro - magnet. WIRELESS CONTR 43 33333 CONTROL OF MECHANISMS.
Page 46
... operation , the opening up of an enormous ditch , thirty - four feet wide at the bottom , and about sixteen feet deep , was also ac- complished . Five smaller ditches run straight across the farm , joining both ends with the main ditch ...
... operation , the opening up of an enormous ditch , thirty - four feet wide at the bottom , and about sixteen feet deep , was also ac- complished . Five smaller ditches run straight across the farm , joining both ends with the main ditch ...
Page 49
... operation so far as it is possible , and the eye and judgment are appealed to by concrete illustrations . The roar of machinery greets the ear of the visitor everywhere . The eye is cap- tivated by queer screens , life - like wax ...
... operation so far as it is possible , and the eye and judgment are appealed to by concrete illustrations . The roar of machinery greets the ear of the visitor everywhere . The eye is cap- tivated by queer screens , life - like wax ...
Page 50
... operation in a score of different industries . Belts and pul- leys also are protected by screens so that no workman could get caught in them ; miners wear patent lamps and helmets as they delve underneath the earth ; and operators in ...
... operation in a score of different industries . Belts and pul- leys also are protected by screens so that no workman could get caught in them ; miners wear patent lamps and helmets as they delve underneath the earth ; and operators in ...
Page 65
... operation everywhere - al- most - that bees are kept . These consist of a trap or box made of zinc with meshes large enough to prevent the queen from passing out when the trap is placed at the entrance to the hive , but allowing the ...
... operation everywhere - al- most - that bees are kept . These consist of a trap or box made of zinc with meshes large enough to prevent the queen from passing out when the trap is placed at the entrance to the hive , but allowing the ...
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