GB1207400A - Improvements in or relating to earth-digging or rock-cutting assemblies and earth or rock drilling or boring heads incorporating such assemblies - Google Patents

Improvements in or relating to earth-digging or rock-cutting assemblies and earth or rock drilling or boring heads incorporating such assemblies

Info

Publication number
GB1207400A
GB1207400A GB4629367A GB4629367A GB1207400A GB 1207400 A GB1207400 A GB 1207400A GB 4629367 A GB4629367 A GB 4629367A GB 4629367 A GB4629367 A GB 4629367A GB 1207400 A GB1207400 A GB 1207400A
Authority
GB
United Kingdom
Prior art keywords
earth
cutters
assemblies
rock
digging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4629367A
Inventor
Gerald Alger Petersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB4629367A priority Critical patent/GB1207400A/en
Publication of GB1207400A publication Critical patent/GB1207400A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
    • E21C27/12—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
    • E21C27/124—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with rotatable cutters provided with breaking-down members
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Abstract

1,207,400. Earth-boring equipment. G. A. PETERSEN. 10 Oct., 1967, No. 46293/67. Heading E1F. The proximal ends of cutters 11 are releasably secured in sockets spaced around and radially extending inwards of the periphery of a rotatable disc 12 so that the distal or blade ends of the cutters extend outwards of said disc to form with the disc a cutter of concaveconvex shape. Various forms of discs, cutters and means for securing the cutters in the sockets to form cutters having a shape as defined above are described as are various positional patterns of such cutters when mounted on a rotary head of a tunnelling or earth boring machine.
GB4629367A 1967-10-10 1967-10-10 Improvements in or relating to earth-digging or rock-cutting assemblies and earth or rock drilling or boring heads incorporating such assemblies Expired GB1207400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4629367A GB1207400A (en) 1967-10-10 1967-10-10 Improvements in or relating to earth-digging or rock-cutting assemblies and earth or rock drilling or boring heads incorporating such assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4629367A GB1207400A (en) 1967-10-10 1967-10-10 Improvements in or relating to earth-digging or rock-cutting assemblies and earth or rock drilling or boring heads incorporating such assemblies

Publications (1)

Publication Number Publication Date
GB1207400A true GB1207400A (en) 1970-09-30

Family

ID=10440652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4629367A Expired GB1207400A (en) 1967-10-10 1967-10-10 Improvements in or relating to earth-digging or rock-cutting assemblies and earth or rock drilling or boring heads incorporating such assemblies

Country Status (1)

Country Link
GB (1) GB1207400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033158A2 (en) * 1999-11-02 2001-05-10 J R French Limited Blades for digging assemblies, related apparatuses and methods for use thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001033158A2 (en) * 1999-11-02 2001-05-10 J R French Limited Blades for digging assemblies, related apparatuses and methods for use thereof
WO2001033158A3 (en) * 1999-11-02 2001-09-20 J R French Ltd Blades for digging assemblies, related apparatuses and methods for use thereof

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees