The Technical World Magazine, Volume 7 |
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Page 40
Several years before Marconi's successful work — in fact, as far back as 1890 —
Dr. Branly discovered the remarkable properties (#) of a tube containing metal
filings, which, when inserted in an electric circuit, will enable the presence of ...
Several years before Marconi's successful work — in fact, as far back as 1890 —
Dr. Branly discovered the remarkable properties (#) of a tube containing metal
filings, which, when inserted in an electric circuit, will enable the presence of ...
Page 41
It would also make possible production of the many mechanical effects at a
distance: drilling of metal pieces, lifting of loads, etc. Devices allowing these
effects to be produced are actually employed in some Fig. 3. Distributing Axle,
Operated ...
It would also make possible production of the many mechanical effects at a
distance: drilling of metal pieces, lifting of loads, etc. Devices allowing these
effects to be produced are actually employed in some Fig. 3. Distributing Axle,
Operated ...
Page 43
The rotating axle, — which, on account of its functions, is termed "distributing axle
" — carries metal discs insulated from each other and each controlling the closing
and opening of a given circuit corresponding to a given effect. In order to be ...
The rotating axle, — which, on account of its functions, is termed "distributing axle
" — carries metal discs insulated from each other and each controlling the closing
and opening of a given circuit corresponding to a given effect. In order to be ...
Page 58
The photograph of the Hotel Blenheim at Atlantic City illustrates another type of
building which is also structurally of reinforced concrete. It is said that a florist first
conceived the idea of combining metal and cement, in making flower pots.
The photograph of the Hotel Blenheim at Atlantic City illustrates another type of
building which is also structurally of reinforced concrete. It is said that a florist first
conceived the idea of combining metal and cement, in making flower pots.
Page 59
In practice, instead of using an actual pipe of metal, a series of rings made of light
bars and spaced a few inches apart are bent around a few longitudinal bars
whose chief function is to form a framework on which to fasten the horizontal
rings ...
In practice, instead of using an actual pipe of metal, a series of rings made of light
bars and spaced a few inches apart are bent around a few longitudinal bars
whose chief function is to form a framework on which to fasten the horizontal
rings ...
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