GB647626A - - Google Patents

Info

Publication number
GB647626A
GB647626A GB647626DA GB647626A GB 647626 A GB647626 A GB 647626A GB 647626D A GB647626D A GB 647626DA GB 647626 A GB647626 A GB 647626A
Authority
GB
United Kingdom
Prior art keywords
thread
nose
tool
bit
spring
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.)
Active
Application number
Publication of GB647626A publication Critical patent/GB647626A/en
Active legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

647,626. Percussive drills. HYMATIC ENGINEERING CO.. Ltd. Nov. 15, 1948, No. 29583. [Class 124] A bit retainer for a percussive drill comprises a helical spring having one end of reduced diameter .to engage screw thread on the collar of a bit and the other end enlarged to engage a thread on the nose of the tool. As shown, the collar f of a bit e has a thread, which may be of rounded section, which engages with a reduced portion d of a helical spring the other and larger end of which engages a thread on the nose of the tool a. The spring has a loop on the larger end to assist in unscrewing the spring from the nose of the tool.
GB647626D Active GB647626A (en)

Publications (1)

Publication Number Publication Date
GB647626A true GB647626A (en)

Family

ID=1749952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB647626D Active GB647626A (en)

Country Status (1)

Country Link
GB (1) GB647626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002704A1 (en) * 1979-06-07 1980-12-11 Joad Eng Ltd Scabblers
US4299293A (en) * 1977-12-09 1981-11-10 Nikolaev Igor V Percussive tool angular position device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299293A (en) * 1977-12-09 1981-11-10 Nikolaev Igor V Percussive tool angular position device
WO1980002704A1 (en) * 1979-06-07 1980-12-11 Joad Eng Ltd Scabblers

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