Compression coupling means for a raise boring head

Details Compression coupling means for a raise boring head Compression coupling means for a raise boring head

1975-10-06

1977-10-11

Kundrat, Andrew V.

Joints and connections

With adjunctive protector, broken parts retainer, repair,...

Position or guide means

403 16, 403369, 403370, F16B 214, F16D 108

Patent

active

040532445

ABSTRACT:
In the embodiment shown, the coupling means comprises an annular wedge which is insertable between the stem and the cutterhead of a raise borer, the wedge being bolted to the cutterhead to effect contact pressure in order that rotary torque will be transmitted from the stem to the cutterhead. A thrust plate is secured to the lower end of the stem in engagement with a lowermost surface of the cutterhead. In addition, a friction locking assembly is used on an underlying or protected portion of the cutterhead to center and locate the stem relative thereto.

REFERENCES:
patent: 1378091 (1921-05-01), Carlsen
patent: 1472565 (1923-10-01), Manning
patent: 2407032 (1946-09-01), Myers
patent: 2634144 (1953-04-01), Friedman
patent: 2810587 (1957-10-01), Boughner
patent: 3257070 (1966-06-01), Kuklinski
patent: 3400905 (1968-09-01), VanDusen

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