GB969879A - Release rotation mechanism for rock drills - Google Patents

Release rotation mechanism for rock drills

Info

Publication number
GB969879A
GB969879A GB12305/63A GB1230563A GB969879A GB 969879 A GB969879 A GB 969879A GB 12305/63 A GB12305/63 A GB 12305/63A GB 1230563 A GB1230563 A GB 1230563A GB 969879 A GB969879 A GB 969879A
Authority
GB
United Kingdom
Prior art keywords
ratchet
pawls
engagement
chuck
piston
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
GB12305/63A
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.)
Chicago Pneumatic Tool Co LLC
Original Assignee
Chicago Pneumatic Tool Co LLC
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 Chicago Pneumatic Tool Co LLC filed Critical Chicago Pneumatic Tool Co LLC
Publication of GB969879A publication Critical patent/GB969879A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
    • 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
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • 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
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0042—Ball-shaped locking members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1527—Screw and nut devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

969,879. Screw-and-nut gearing. CHICAGO PNEUMATIC TOOL CO. March 28, 1963 [May 15, 1962], No. 12305/63. Heading F2Q. [Also in Division B4] A release rotation mechanism for a percussive rock drill (see Division B4) comprises a ratchet ring 15 engaged by spiral splines 21, 22 with a hammer piston 11 connected by straight splines 18, 19 with a chuck driver 16, a pair of pawls 35 being loaded by springs 39 into engagement with the ratchet and carried out of engagement by means of a rotary sleeve 41. The pawls are pivotally mounted in the housing 13 of the tool and urged by the springs 39 into contact with the teeth 31 of the ratchet as shown in Fig. 4. Upon rotation of the sleeve 41 by means of a slidable plunger 43, cam surfaces 46 on the sleeve lift the pawl out of engagement with the teeth; spring indent means are provided to lock the plunger in its two positions. In operation of the tool, with the pawl in engagement with the ratchet as shown in Fig. 4, downward movement of the piston 11 causes the ratchet to rotate freely in an anticlockwise direction away from the pawls due to the action of the spiral splines 21, 22, the piston thereby not being rotated so as to cause rotation of the chuck driver 16 and chuck 17. Upon upward movement of the piston, the ratchet is prevented from rotation clockwise by engagement of the teeth with the pawls and thus the piston is caused to rotate and thereby, via the straight splines 18, 19, rotate the chuck driver and chuck. In order to prevent rotation of the chuck on the upward stroke, the sleeve 41 is rotated by the plunger 43 to disengage the pawls from the teeth.
GB12305/63A 1962-05-15 1963-03-28 Release rotation mechanism for rock drills Expired GB969879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US194933A US3171501A (en) 1962-05-15 1962-05-15 Release rotation mechanism for rock drills

Publications (1)

Publication Number Publication Date
GB969879A true GB969879A (en) 1964-09-16

Family

ID=22719439

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12305/63A Expired GB969879A (en) 1962-05-15 1963-03-28 Release rotation mechanism for rock drills

Country Status (2)

Country Link
US (1) US3171501A (en)
GB (1) GB969879A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2349413A1 (en) * 1976-04-28 1977-11-25 Bosch Gmbh Robert TOOL HOLDER, ESPECIALLY FOR A HAND MACHINE

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323601A (en) * 1965-01-18 1967-06-06 Wacker Hermann Boring and breaking hammer with combustion engine or electromotor drive
US3404739A (en) * 1966-03-11 1968-10-08 Ingersoll Rand Co Drilling apparatus having drill steel rotation control
US3430708A (en) * 1967-10-02 1969-03-04 Black & Decker Mfg Co Transmission for rotary hammer
US5769172A (en) * 1992-03-25 1998-06-23 Sher; Arieh Power tool
USRE36848E (en) * 1992-07-17 2000-09-05 Smith International, Inc. Air percussion drilling assembly
USRE36166E (en) * 1992-07-17 1999-03-30 Smith International, Inc. Air percussion drilling assembly for directional drilling applications
US5584342A (en) * 1995-06-06 1996-12-17 Ponder Industries, Inc. Subterranean rotation-inducing device and method
US11007631B2 (en) * 2014-01-15 2021-05-18 Milwaukee Electric Tool Corporation Bit retention assembly for rotary hammer
DE102020213165A1 (en) * 2020-10-19 2022-04-21 Robert Bosch Gesellschaft mit beschränkter Haftung Hand tool machine with a locking device
CN116044317B (en) * 2023-03-22 2023-06-13 天水风动机械股份有限公司 Gas-liquid linkage guide rail rock drilling equipment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867929A (en) * 1930-09-15 1932-07-19 Ingersoll Rand Co Feeding device
US2068660A (en) * 1935-11-06 1937-01-26 Cleveland Rock Drill Co Air feed control for rock drills
US2249716A (en) * 1940-06-14 1941-07-15 Gardner Denver Co Rock drill feed mechanism
US2249639A (en) * 1940-09-26 1941-07-15 Gardner Denver Co Feeding mechanism for rock drills
US2336953A (en) * 1941-10-07 1943-12-14 Sullivan Machinery Co Rock drill
US2649813A (en) * 1949-07-19 1953-08-25 Dana Corp Power and manually operated gear shift
GB879530A (en) * 1957-02-15 1961-10-11 Warsop Power Tools Ltd Improvements in rock drills and breakers
US3055441A (en) * 1958-11-06 1962-09-25 Ingersoll Rand Co Percussive rock drill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2349413A1 (en) * 1976-04-28 1977-11-25 Bosch Gmbh Robert TOOL HOLDER, ESPECIALLY FOR A HAND MACHINE

Also Published As

Publication number Publication date
US3171501A (en) 1965-03-02

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