GB564948A - Portable drilling machines - Google Patents

Portable drilling machines

Info

Publication number
GB564948A
GB564948A GB939943A GB939943A GB564948A GB 564948 A GB564948 A GB 564948A GB 939943 A GB939943 A GB 939943A GB 939943 A GB939943 A GB 939943A GB 564948 A GB564948 A GB 564948A
Authority
GB
United Kingdom
Prior art keywords
drilling machines
portable drilling
fitzpatrick
drills
spindles
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
GB939943A
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 GB939943A priority Critical patent/GB564948A/en
Publication of GB564948A publication Critical patent/GB564948A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/58—Machines slitting by drilling hole on hole

Abstract

564,948. Supporting - columns for drills. FITZPATRICK, J. June 11, 1943, No. 9399. [Class 124] [Also in Group XXII] A jack-type support J for a rotary rock or coal drill is notched to receive pawls L on a power unit H that drives and carries the spindles.
GB939943A 1943-06-11 1943-06-11 Portable drilling machines Expired GB564948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB939943A GB564948A (en) 1943-06-11 1943-06-11 Portable drilling machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939943A GB564948A (en) 1943-06-11 1943-06-11 Portable drilling machines

Publications (1)

Publication Number Publication Date
GB564948A true GB564948A (en) 1944-10-19

Family

ID=9871220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB939943A Expired GB564948A (en) 1943-06-11 1943-06-11 Portable drilling machines

Country Status (1)

Country Link
GB (1) GB564948A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971512C (en) * 1952-01-12 1959-02-05 Karl Burgsmueller Deep hole drilling tool
CN109538206A (en) * 2018-12-19 2019-03-29 中国矿业大学 A kind of more drill bit combination type drilling machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971512C (en) * 1952-01-12 1959-02-05 Karl Burgsmueller Deep hole drilling tool
CN109538206A (en) * 2018-12-19 2019-03-29 中国矿业大学 A kind of more drill bit combination type drilling machines
CN109538206B (en) * 2018-12-19 2024-04-09 中国矿业大学 Multi-bit combined drilling machine

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