Breaker apparatus
AssigneeWilliam Machinery Limited
InventorJohn Holmes
Life of this patent
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Abstract
Apparatus including a downwardly-extending breaker bar connected for vertical movement by linkage to a base adapted to be mounted on a suitable traction unit. A hydraulic cylinder unit extends between the base and the breaker bar, and operating means is associated with the cylinder unit for selectively supplying fluid to said unit alternatively to raise and lower the breaker bar to cause it to strike a surface to be broken, such as the crust that forms on aluminum smelt in pots during the electrolytic production of aluminum.
Claims10
Breaker apparatus for breaking surface crusts and the like, comprising a base adapted to be mounted on a traction unit, an elongate passive, non-pneumatic breaker bar unit comprising an elongated, fixedly mounted breaker bar having a breaker point at a lower end thereof, linkage swingably mounting the breaker bar unit on the base for substantially vertical movement, said linkage maintaining the breaker bar unit in a generally downwardly-extending attitude and comprising vertically spaced upper and lower links pivotally connected at opposite ends to the base and the breaker bar unit, a single hydraulic cylinder unit having a lower end connected to the base and an upper end connected to the upper link, and operating means for selectively supplying pressure fluid to said cylinder unit alternatively to swing the upper link up and down and consequently to raise the lower said breaker bar unit to cause said point thereof to strike surface crusts and the like therebeneath and, together with said single hydraulic cylinder unit, constituting the sole means for the said raising and lowering of said breaker bar unit.
Breaker apparatus for breaking surface crusts and the like, comprising a vertical shaft mountable for rotation on a traction unit, a vertical mounting base secured to the shaft to rotate therewith, power means connected to the shaft operable to rotate said shaft, and elongated breaker unit having at a lower end a breaker point, substantially parallel upper and lower links having vertically spaced inner ends pivotally connected to the base and vertically spaced outer ends pivotally connected to the breaker bar unit, said upper and lower links swingably mounting the breaker bar unit on the base for substantially vertical movement and maintaining said bar unit in a generally downwardly-extending attitude, a single hydraulic cylinder unit having a lower end connected to the base and an upper end connected to the upper link, and operating means for selectively supplying pressure fluid to said cylinder unit alternatively to swing the upper link up and down and consequently to raise and lower said breaker bar unit to cause said point thereof to strike surface crusts and the like therebeneath and, together with said single hydraulic cylinder, constituting the sole means for the said raising the lowering of said breaker bar unit.
Dependencies are inferred from the claim text.