Jacks

Examples

• I determined to ask Joe why he had ever taught me to call those picture-cards Jacks, which ought to be called knaves. Charles Dickens. Great Expectations.
• These jacks were controlled by a series of valves, which were so designed that any one jack or any set of jacks desired could be operated. Various. The Wonder Book of Knowledge.
• In pushing a shield forward with the battery of powerful hydraulic jacks, each advance is of two feet, and must be followed immediately by installation of the permanent lining in the rear. Various. The Wonder Book of Knowledge.
• This was necessary as the direction of the shield was, as it were, guided by the pressure of the jacks. Various. The Wonder Book of Knowledge.
• To move the shield forward, each shield was equipped with sixteen hydraulic jacks, arranged around the shield circumferentially. Various. The Wonder Book of Knowledge.
• He calls the knaves Jacks, this boy! Charles Dickens. Great Expectations.
• Behind this diaphragm are placed a number of hydraulic jacks, so arranged that by thrusting against the last erected iron ring the entire shield is pushed forward. Various. The Wonder Book of Knowledge.
• It comprises a great array of annunciator drops, spring jacks with plug seats, and connecting cords with metal plugs at their opposite ends. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• When sufficient excavation has been taken out, the jacks are again extended, thus pushing the shield ahead, and another ring of iron is erected as before. Various. The Wonder Book of Knowledge.
• As the digging proceeds the shield is advanced, and a section of tunnel is built behind it which, in turn, furnishes a bearing for the jacks in the further advance of the shield. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
• We have boot-jacks and a bath-tub, now, and yet all the mysteries the pack-mules carry are not revealed. Mark Twain. The Innocents Abroad.

Typist: Tito