| http://www.w3.org/ns/prov#value | - In the accompanying drawings, forming part of this specification, Fig. 1 is a diagrammatic elevation showing a preferred embodiment of our invention applied to an oil well; Fig. 2 is a vertical central section of the reciprocating power ram which is shown in Fig. l, used above the surface of the well for reciprocating the valve means in the well; it being understood that any type of valve actuati
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