FR496222A - Improvements to drilling tools - Google Patents

Improvements to drilling tools

Info

Publication number
FR496222A
FR496222A FR496222A FR496222DA FR496222A FR 496222 A FR496222 A FR 496222A FR 496222 A FR496222 A FR 496222A FR 496222D A FR496222D A FR 496222DA FR 496222 A FR496222 A FR 496222A
Authority
FR
France
Prior art keywords
drilling tools
drilling
tools
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
FR496222A
Other languages
French (fr)
Inventor
Emil Gairing
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.)
Gairing & Needham Tool C
Original Assignee
Gairing & Needham Tool C
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 Gairing & Needham Tool C filed Critical Gairing & Needham Tool C
Application granted granted Critical
Publication of FR496222A publication Critical patent/FR496222A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
    • B23B31/1071—Retention by balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • B23B51/107—Bits for countersinking having a pilot

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Gripping On Spindles (AREA)
FR496222A 1917-11-10 1919-02-25 Improvements to drilling tools Expired FR496222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US383220XA 1917-11-10 1917-11-10

Publications (1)

Publication Number Publication Date
FR496222A true FR496222A (en) 1919-10-30

Family

ID=21899281

Family Applications (1)

Application Number Title Priority Date Filing Date
FR496222A Expired FR496222A (en) 1917-11-10 1919-02-25 Improvements to drilling tools

Country Status (3)

Country Link
DE (1) DE383220C (en)
FR (1) FR496222A (en)
GB (1) GB132130A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7572796B2 (en) 2002-04-16 2009-08-11 Merck Patent Gmbh Substituted indoles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7572796B2 (en) 2002-04-16 2009-08-11 Merck Patent Gmbh Substituted indoles

Also Published As

Publication number Publication date
DE383220C (en) 1923-10-11
GB132130A (en)

Similar Documents

Publication Publication Date Title
FR497186A (en) Improvements to drills and other drilling tools
FR490690A (en) Improvements to drilling tools
FR521150A (en) Improvements to automatic machine tools
FR496222A (en) Improvements to drilling tools
FR498604A (en) Improvements to portable drills
FR20865E (en) Improvements to tools with added grain
FR494118A (en) Drill improvement
FR515009A (en) Improvements to automatic machine tools
FR490202A (en) Improvements to drilling tools
FR487904A (en) Improvements made to tool holders
FR515284A (en) Improvements to percussion tools
FR487823A (en) Improvements to tools with added grain
FR20733E (en) Improvements to tools with added grain
FR484641A (en) Improvements to machine tools
CH78928A (en) Combined glazier tool
FR502010A (en) Improvements to pipe wrenches
CH76713A (en) Quick drill
FR487262A (en) Improvements to adding machines
FR486148A (en) Improvements to milling machines
FR471081A (en) Combined tool improvements
FR494849A (en) Vise improvements
CH77138A (en) Drill head
FR490053A (en) Improvements to pneumatic rock drilling machines
CH75476A (en) Drill chuck
CH77575A (en) Combined tool