Cutter mounting extension apparatus
AssigneeIngersoll-Rand Company
InventorCharles R. Dively
Life of this patent
Estimating the term…
Abstract
The apparatus comprises means for coupling to a standard raise boring head for extending the radius of the head. The apparatus comprises a support which is bolted or welded to a terminal end of the raise boring stem and to the underlying surface of the principal cutter bracket mounting platform of the head, and the support has means for selectively coupling thereto cutter mounting extension elements each of which comprise ancillary cutter bracket mounting platforms.
Claims25
Cutter mounting extension apparatus, for use in extending the radius of a raise boring head having a drive stem, comprising:
- extension support means having means adapted for a coupling thereof to a raise boring head;
- and
- a cutter mounting extension element coupled to said support means;
- wherein
- said extension support means comprises a planar base having a pair of opposed sides;
- said extension element comprises a flat plate;
- said extension element is coupled to said base at one of said sides thereof;
- said base and said plate being in abutting relationship and occupying a common plane;
- and
- fastening means replaceably securing said base and said plate together and prohibiting relative displacement, between said base and said plate, from said common plane.
In combination, a raise boring head having a stem and a first cutter bracket mounting platform;
- and a structure fastened to an underlying surface of said platform for reinforcement of said platform;
- wherein said structure comprises means adapted for replaceably coupling thereto a second cutter bracket mounting platform;
- wherein
- said structure has a planar surface which is terminated by a pair of opposed, lateral sides of said structure;
- said coupling means comprises means for selectively coupling a second cutter bracket mounting platform thereto at one of said sides of said structure, in an abutting relationship with said structure, and in a plane common to said planar surface;
- and
- said coupling means further comprises means for selectively fastening such a second cutter bracket mounting platform to said one side of said structure secure against displacement of such a fastened second mounting platform from said common plane.
A cutter mounting extension element, for extending the radius of a raise boring head, comprising:
- first means defining a flat, planar, cutter bracket mounting plate having a pair of opposed, lateral sides;
- second means defining at least one, cutter bracket mounting pad on said plate;
- said at least one pad having a cutter axis;
- one coupling means, disposed along one of said sides of said pair, for receiving fasteners for selectively and replaceably coupling said plate to a raise boring head;
- and
- another coupling means, extending from said one side of said pair for receiving fasteners for selectively and replaceably coupling said plate to a raise boring head.
In combination, a raise boring head having a stem and a first cutter bracket mounting platform;
- and a structure fastened to an underlying surface of said platform for reinforcement of said platform;
- wherein said structure comprises means adapted for replaceably coupling thereto a second cutter bracket mounting platform;
- wherein
- said structure includes a base member and a plurality of upstanding walls;
- each of said walls is secured at one end thereof to said base member and at the other end thereof to said principal mounting platform;
- and
- each of said walls is further secured to at least one other of said walls at an angle relative to said one other wall.
Dependencies are inferred from the claim text.