GB1029355A - Improvements in driving devices for screw thread cutting taps - Google Patents

Improvements in driving devices for screw thread cutting taps

Info

Publication number
GB1029355A
GB1029355A GB4367564A GB4367564A GB1029355A GB 1029355 A GB1029355 A GB 1029355A GB 4367564 A GB4367564 A GB 4367564A GB 4367564 A GB4367564 A GB 4367564A GB 1029355 A GB1029355 A GB 1029355A
Authority
GB
United Kingdom
Prior art keywords
washer
nut
members
tap
washers
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
GB4367564A
Inventor
Edward JOHNSON
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.)
ED JOHNSON AND PARTNERS Ltd
Original Assignee
ED JOHNSON AND PARTNERS 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 ED JOHNSON AND PARTNERS Ltd filed Critical ED JOHNSON AND PARTNERS Ltd
Priority to GB4367564A priority Critical patent/GB1029355A/en
Publication of GB1029355A publication Critical patent/GB1029355A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
    • F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
    • F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
    • B23G1/46—Equipment or accessories specially designed for machines or devices for thread cutting for holding the threading tools

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

1,029,355. Tapping. E. D. JOHNSON & PARTNERS Ltd. Oct. 27, 1964, No. 43675/64. Heading B3N. A tapping device comprises a driving member 100, a driven member 101, connected to an intermediate member 102 by balls 106, and a nut 103 having a left-hand thread 130. Friction rings 108, 112 are bonded to members 100 and 102, respectively, a washer 114 is bonded to member 102, and a second washer 116 is disposed between washer 114 and ring 108. Washer 114 has three rollers 120 which co-operate with wedge-like surfaces 122 on washer 116, and relative angular displacement of the washers is limited by a pin and elongated slot engagement 124, 126. When the tap reaches the bottom of the hole, member 101 is restrained, and members 100, 102 rotate relatively to each other to release clutch means 120, 122. When rotation of member 100 is reversed to withdraw the tap, members 100 and 101 rotate relatively in the opposite direction, to thus engage the clutch means. In a modification, rollers 120 are carried by member 102, and washer 114 is eliminated. In a further modification, washers 114, 116 are inverted, and their positions reversed. Two pawls 142 are pivotally mounted on nut 103, and engage recesses 146 in member 102, to enable the nut to drive member 101 when withdrawing the tap.
GB4367564A 1964-10-27 1964-10-27 Improvements in driving devices for screw thread cutting taps Expired GB1029355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4367564A GB1029355A (en) 1964-10-27 1964-10-27 Improvements in driving devices for screw thread cutting taps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4367564A GB1029355A (en) 1964-10-27 1964-10-27 Improvements in driving devices for screw thread cutting taps

Publications (1)

Publication Number Publication Date
GB1029355A true GB1029355A (en) 1966-05-11

Family

ID=10429806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4367564A Expired GB1029355A (en) 1964-10-27 1964-10-27 Improvements in driving devices for screw thread cutting taps

Country Status (1)

Country Link
GB (1) GB1029355A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471512A1 (en) * 1979-12-12 1981-06-19 Hilti Ag FRICTION COUPLING FOR TRANSMITTING A LIMIT TORQUE
FR2519106A1 (en) * 1981-12-24 1983-07-01 Walterscheid Gmbh Jean ADJUSTABLE FRICTION COUPLING

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471512A1 (en) * 1979-12-12 1981-06-19 Hilti Ag FRICTION COUPLING FOR TRANSMITTING A LIMIT TORQUE
FR2519106A1 (en) * 1981-12-24 1983-07-01 Walterscheid Gmbh Jean ADJUSTABLE FRICTION COUPLING

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