Apparatus for removing linings and or/slag from furnaces and the like

Claim 2

A delining apparatus, such as for delinging furnaces, comprising: a platform; a turntable rotatably mounted on said platform; a boom mounted on said turntable for pivotal movement with respect thereto in a vertical plane, said boom being provided on its swingable end with a downwardly projecting pivot support and at a position set back from said swingable end an upwardly projecting pivot support; power-operated means for pivotally asjusting said boom with respect to said turntable; a telescopic jib comprising a socket part and a resiprocable part arranged for telescopic extension from and retraction into said socket part, said socket part having pivot supports on its uNderside near its front end and rear end respectively, said jib being mounted on said boom by a pivot connecting said rear pivot support on the underside of siad socket part to the upwardly projecting pivot support on said boom, hydraulic jack means connected between the front pivot support on the underside of said socket part and said downwardly projecting pivot support on said boom for pivotally adjusting said jib with respect to said boom; and power-tool-supporting means mounted on said reciprocable part for pivotal movement in said vertical plane and power-operated means for pivotally adjusting said power-tool-supporting means with respect to said jib.

Claim 3

A delining apparatus, such as for delining furnaces, comprising: a platform; a turntable rotatably mounted on said platform; a boom mounted on said turntable for pivotal movement with respect thereto in a vertical plane; a telescopic jib pivotally suspended on said boom at a position near the swingable end of said boom to extend substantially vertically downwardly therefrom: said telescopic jib comprising a socket part and a reciprocable part arranged for telescopic extension downwardly from and retraction upwardly into said socket part, said socket part having, on the side thereof facing said boom, a pivot support located near its upper end and a further pivot support located intermediate its upper and lower ends but nearer its upper end than its lower end; said boom having its swingable end a first pivot support and at a position set back from said swingable end an upwardly projecting second pivot support; a pivot connecting said intermediate pivot support on said socket part to said first pivot support on said boom; hydraulic jack means connected between said pivot support near the upper end of said socket part and said second pivot support on said boom for pivotally adjusting said jib with respect to said boom; power-tool-supporting means mounted on said reciprocable part of said jib for pivotal movement in said vertical plane; and power-operated means for pivotally adjusting said boom with resepct to said turntable and said power-tool-supporting means with respect to said jib.

Claim 4

A delining apparatus, such as for delining furnaces, comprising: a platform; a turntable rotatably mounted on said platform; a boom mounted on said turntable for pivotal movement with respect thereto in a vertical plane; a telescopic jib pivotally suspended on said boom at a position near the swingable end of said boom to extend substantially vertically downwardly therefrom: said telescopic jib comprising a socket part and a reciprocable part arranged for telescopic extension downwardly from and retraction upwardly into said socket part, said socket part having, on the side thereof facing said boom, a pivot support located near its upper end and a further pivot support located intermediate its upper and lower ends but nearer its upper end than its lower end; said boom having its swingable end a first pivot support and at a position set back from said swingable end an upwardly projecting second pivot support; a pivot connecting said intermediate pivot support on said socket part to said first pivot support on said boom; hydraulic jack means connected between said pivot support near the upper end of said socket part and said second pivot support on said boom for pivotally adjusting said jib with respect to said boom; power-tool-supporting means mounted on said reciprocable part of said jib for pivotal movement in said vertical plane; and power-operated means for pivotally adjusting said boom with resepct to said turntable and said power-tool-supporting means with respect to said jib.

Claim 5

A telescopic jib adapted for use in a furnace delining apparatus, comprising: a socket part of rectangular cross-section; a reciprocable jib part of rectangular cross-section mounted for telescoping movement within said socket part; and guide means including upper parallel longitudinal guide rails fixed to the top surface of said reciprocable part, lower parallel longitudinal guide rails fixed to the bottom surface of said reciprocable part, upper and lower sets of pairs of flanged rollers arranged at intervals along the top and bottom respectively of said socket part in rolling engagement with said upper and lower guide rails, the flanges of the rollers abutting inside surfaces of the upper and lower guide rails, said sets of rollers being rotatably supported in bearings secured to the top and bottom resepctively of said socket part by adjustable means whereby their positions can be adjusted individually to take up wear on said guide rails and rollers.

Claim 6

A telescopic jib adapted for use in a furnace delining apparatus, comprising: a socket part of rectangular cross-section; a reciprocable jib part of rectangular cross-section mounted for telescoping movement within said socket part; and guide means including upper parallel longitudinal guide rails fixed to the top surface of said reciprocable part, lower parallel longitudinal guide rails fixed to the bottom surface of said reciprocable part, upper and lower sets of pairs of flanged rollers arranged at intervals along the top and bottom respectively of said socket part in rolling engagement with said upper and lower guide rails, the flanges of the rollers abutting inside surfaces of the upper and lower guide rails, said sets of rollers being rotatably supported in bearings secured to the top and bottom resepctively of said socket part by adjustable means whereby their positions can be adjusted individually to take up wear on said guide rails and rollers.

Claim 7

A jib according to claim 3, wherein those two rollers of said lower set which are nearest to the end of the socket part remote from its pivoted end are arranged closer together than the other pairs of rollers of said lower set and those pairs of rollers of said upper set which are second and third from the said end are arranged closer together than the other pairs of rollers of said upper set.

Claim 8

A jib according to claim 3, wherein said adjustable means includes platelike shim means clampingly held between said bearing and the respective top or bottom wall of said socket part.

Claim 9

A jib according to claim 5, wherein said shim means includes a plurality of stacked platelike shim members.