Combination bit for coking oven
First Claim
1. Apparatus for cutting coke from a generally cylindrical coking oven having a given diameter, said apparatus comprising a cutting bit having a generally cylindrical body portion, a first set of cutting elements extending from said body portion and arranged for drilling a pilot hole which has a first relatively small diameter through said coke in said coking oven, wherein said first set of cutting elements comprises a first plurality of hydraulic jet nozzles extending in a direction 11°
- from parallel to a longitudinal axis of said body portion of said cutting bit in a first plane;
said cutting bit also having a second set of cutting elements extending from said body portion and arranged for cutting a larger hole which has a second relatively larger diameter through said coke in said coking oven;
manually operable control means mounted on said cutting bit for switching operability of said cutting bit from said first set of cutting elements to said second set of cutting elements, said control means being manually operably by a single workman upon removal of said cutting bit from said coking oven.
1 Assignment
0 Petitions
Accused Products
Abstract
A combination bit for both drilling a pilot hole and cutting coke from a coking drum. A manually operable flow divider/diverter valve permits a single workman to quickly and easily change from pilot hold drilling mode to cutting mode without having to change bits.
50 Citations
17 Claims
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1. Apparatus for cutting coke from a generally cylindrical coking oven having a given diameter, said apparatus comprising a cutting bit having a generally cylindrical body portion, a first set of cutting elements extending from said body portion and arranged for drilling a pilot hole which has a first relatively small diameter through said coke in said coking oven, wherein said first set of cutting elements comprises a first plurality of hydraulic jet nozzles extending in a direction 11°
- from parallel to a longitudinal axis of said body portion of said cutting bit in a first plane;
said cutting bit also having a second set of cutting elements extending from said body portion and arranged for cutting a larger hole which has a second relatively larger diameter through said coke in said coking oven; manually operable control means mounted on said cutting bit for switching operability of said cutting bit from said first set of cutting elements to said second set of cutting elements, said control means being manually operably by a single workman upon removal of said cutting bit from said coking oven. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- from parallel to a longitudinal axis of said body portion of said cutting bit in a first plane;
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11. A hydraulically operated combination cutting bit comprising a body portion, a first plurality of jet cutting nozzles extending from said body portion positioned to drill a first relatively small diameter pilot hole through a solid materials;
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a second plurality of get cutting nozzles extending from said body portion positioned to cut a second larger diameter hole through said solid material; a manually operable diverter valve means for directing hydraulic cutting fluid to either said first or said second plurality of nozzles, wherein said diverter valve means comprises a rotatable inner sleeve member with a first set of flow ports aligning with said first plurality of jet cutting nozzles when in a first position and a second set of flow ports aligning with said second plurality of jet cutting nozzles when in a second position. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification