Power actuated lazy-tongs arrangement

A power actuated lazy-tongs arrangement comprising:

• lazy-tongs means, including a pair of base leg means connected to each other for scissors-like movements;
• relatively fixed base means;
• bracket means on said base means for connecting the mounting ends of said base leg means thereto, and arranged to provide for said scissors-like movements;
• a rigid bridge element;
• fixed pivot pin means on one of said base leg means between the mounting end thereof and the scissors pivot connection between said base leg means, for pivotally connecting one end of said rigid bridge element thereto;
• slidable pivot pin means on the other of said base leg means between the mounting end thereof and the scissors pivot connection between said base leg means, for slidably and pivotally connecting the other end of said rigid bridge element thereto;
• and power piston means connected with the central portion of said rigid bridge element for exerting force thereon, said rigid bridge element being effective to transmit said force substantially simultaneously and equally to said pair of base leg means for operating said lazy-tongs means.

A power actuated lazy-tongs arrangement, comprising:

• lazy-tongs means, including a pair of base leg means connected to each other for scissors-like movements;
• relatively fixed base means;
• bracket on said base means for connecting the mounting ends of said base leg means thereto, and arranged to provide for said scissors-like movements;
• and articulated bridge element;
• fixed pivot pin means on each of said base leg means between the mounting ends thereof and the scissors pivot connection between said base leg means, for pivotally connecting the opposite ends of said articulated bridge element to said base leg means to extend therebetween;
• and power piston means connected with said bridge element at the articulation therein for exerting force thereon, said power piston means being pivotally mounted at one end thereof to said fixed base means, and pivotally mounted at the other end thereof to said articulated bridge element, said articulate bridge element being effective to transmit said force substantially simultaneously and equally to said pair of base leg means for operating said lazy-tongs means.