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GB991533A - Improvements in percussion drills - Google Patents

Improvements in percussion drills

Info

Publication number
GB991533A
GB991533A GB1833263A GB1833263A GB991533A GB 991533 A GB991533 A GB 991533A GB 1833263 A GB1833263 A GB 1833263A GB 1833263 A GB1833263 A GB 1833263A GB 991533 A GB991533 A GB 991533A
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
apertures
percussion
air
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
GB1833263A
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.)
JAKOB HEMMLER
Original Assignee
JAKOB HEMMLER
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 JAKOB HEMMLER filed Critical JAKOB HEMMLER
Priority to GB1833263A priority Critical patent/GB991533A/en
Publication of GB991533A publication Critical patent/GB991533A/en
Expired 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0015—Anvils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

991,533. Percussive drills. J. HEMMLER, [trading as RIKO - WERKZEUGE ING. JAKOB HEMMLER]. May 9, 1963, No. 18332/63. Heading B4C. An electromotively drivable pneumatic percussive drill comprises a cylinder 11 having therein a percussion body 13 movable by means of a piston 12 into engagement with a tool shaft 14, the cylinder being provided with air compensating apertures 17, 18 and the percussion body with a bore 19. The cylinder is surrounded by a casing 15 thereby forming an annular chamber 16 communicating with the cylinder 11 via the apertures 17, 18. In operation, when the piston is reciprocated, the air is moved between the front of the percussion body 13 and the rear of the piston 12 via the apertures 17, 18. The bore 19 in the body 13 serves to replenish the air cushion formed between the piston and body.
GB1833263A 1963-05-09 1963-05-09 Improvements in percussion drills Expired GB991533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1833263A GB991533A (en) 1963-05-09 1963-05-09 Improvements in percussion drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1833263A GB991533A (en) 1963-05-09 1963-05-09 Improvements in percussion drills

Publications (1)

Publication Number Publication Date
GB991533A true GB991533A (en) 1965-05-12

Family

ID=10110657

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1833263A Expired GB991533A (en) 1963-05-09 1963-05-09 Improvements in percussion drills

Country Status (1)

Country Link
GB (1) GB991533A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388383A1 (en) * 1989-03-16 1990-09-19 Atlas Copco Berema Aktiebolag Hammer machine
EP1584420A1 (en) * 2004-04-07 2005-10-12 HILTI Aktiengesellschaft Device for variable setting of the impact energy of an electro-pneumatic percussion mechanism in a drilling and/or chipping hammer in which it is comprised.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388383A1 (en) * 1989-03-16 1990-09-19 Atlas Copco Berema Aktiebolag Hammer machine
EP1584420A1 (en) * 2004-04-07 2005-10-12 HILTI Aktiengesellschaft Device for variable setting of the impact energy of an electro-pneumatic percussion mechanism in a drilling and/or chipping hammer in which it is comprised.

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