GB298657A - Improvements in handles for percussion drills, jumpers or the like - Google Patents

Improvements in handles for percussion drills, jumpers or the like

Info

Publication number
GB298657A
GB298657A GB1578327A GB1578327A GB298657A GB 298657 A GB298657 A GB 298657A GB 1578327 A GB1578327 A GB 1578327A GB 1578327 A GB1578327 A GB 1578327A GB 298657 A GB298657 A GB 298657A
Authority
GB
United Kingdom
Prior art keywords
drill
cotter
handles
jumpers
roughened
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
GB1578327A
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.)
Rawlplug Co Ltd
Original Assignee
Rawlplug Co Ltd
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 Rawlplug Co Ltd filed Critical Rawlplug Co Ltd
Priority to GB1578327A priority Critical patent/GB298657A/en
Publication of GB298657A publication Critical patent/GB298657A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

298,657. Rawlings, J. J., and Rawlplug Co., Ltd. June 14, 1927. Loose tools and bits, retaining. - Drills &c. are secured in handles by cotters d the surface either of the cotter or of the hole being roughened as by file cutting or by a a fine screw thread e. Both surfaces may be roughened. The cotter may have a file cut flat engaging a flat or recess on the drill, may pass through the drill centrally instead of engaging tangentially and may be of square, triangular, or other section. Instead of being heated transversely to the drill as shown, the cotter may be arranged at an inclination the small end being directed away from the drill.
GB1578327A 1927-06-14 1927-06-14 Improvements in handles for percussion drills, jumpers or the like Expired GB298657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1578327A GB298657A (en) 1927-06-14 1927-06-14 Improvements in handles for percussion drills, jumpers or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1578327A GB298657A (en) 1927-06-14 1927-06-14 Improvements in handles for percussion drills, jumpers or the like

Publications (1)

Publication Number Publication Date
GB298657A true GB298657A (en) 1928-10-15

Family

ID=10065373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1578327A Expired GB298657A (en) 1927-06-14 1927-06-14 Improvements in handles for percussion drills, jumpers or the like

Country Status (1)

Country Link
GB (1) GB298657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700549A (en) * 1951-06-11 1955-01-25 Walter V Cornett Tool for demolition machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700549A (en) * 1951-06-11 1955-01-25 Walter V Cornett Tool for demolition machines

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