Side rods or links have been used, but only in connection with a crank or eccentric, as in the Fowler and Wagner quarry crusher and others. The links or rods are used in these crushers for the purpose of causing the jaws to advance and recede from each other, thus producing a positive crushing motion, while the links in my invention are to prevent them from ap proaching and to keep the jaws at afixed distance apart. Links have also been used to strengthen the machine and have been applied as braces or tension-rods.
It is well known that the tensile strength of minerals is only about one-tenth of its resistance to compression.s
By the action of the jaws of this quarry crusher the mineral is subjected to a torsional and shearing strain, thus aflilying the power in such a manner that the mineral offers the least possible resistance to fracture. By the use of this motion one machine is capable of doing every class of work-such as crushing stone for macadamized roads, &c., or for pulverizing ores.
Having thus described my invention, I lower supporting-pivots of said jaws, when the claim as new and desire to secure by Letters faces of said jaws are equidistant from a ver- Patent-- tical line projected upward from the central In a quarry crusher, as a means for holding point between said supporting-pivots, as set 5 the crushing-jaws always at nearly the same forth.