The moulds are opened and closed by cams actuated by compressed air.
While forming and promoting his scheme, he was actuated by principles of political wisdom and by the purest patriotism.
There are three Li ting - typical methods: (I) A direct pull may be applied to the hook, either by screws, or by a cylinder fitted with is piston and rod and actuated by direct hydraulic or other pressure, as shown diagrammatically in fig.
The relay tongue, being perfectly free to move, can be actuated by a comparatively weak current.
In the same way the arrangements finally elaborated by Lodge and Muirhead consisted of a direct coupled antenna and nearly closed condenser circuit, and a similar receiving circuit containing as a detector the steel wheel revolving on oily mercury which actuated a siphon recorder writing signals on paper tape.