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GB809848A - Safe torque drivers - Google Patents

Safe torque drivers

Info

Publication number
GB809848A
GB809848A GB25430/56A GB2543056A GB809848A GB 809848 A GB809848 A GB 809848A GB 25430/56 A GB25430/56 A GB 25430/56A GB 2543056 A GB2543056 A GB 2543056A GB 809848 A GB809848 A GB 809848A
Authority
GB
United Kingdom
Prior art keywords
rollers
torque
drive
wedging
shell
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
GB25430/56A
Inventor
Bernard Raymond Better
John William Lehde Jr
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.)
SCULLY JONES AND CO
Original Assignee
SCULLY JONES AND CO
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
Priority to US408410A priority Critical patent/US2791304A/en
Application filed by SCULLY JONES AND CO filed Critical SCULLY JONES AND CO
Priority to GB25430/56A priority patent/GB809848A/en
Publication of GB809848A publication Critical patent/GB809848A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/38—Chucks with overload clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings
    • 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
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
    • F16D43/202—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type
    • 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
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
    • F16D43/202—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type
    • F16D43/204—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with intermediate balls or rollers
    • F16D43/206—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with intermediate balls or rollers moving axially between engagement and disengagement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

809,848. Screwing; tapping. SCULLYJONES & CO. Aug. 20, 1956, No. 25430/56. Class 83 (3). [Also in Group XXIV] A safe-torque-clutch for taps and other rotary-tools comprises a cylindrical driving- shell 15 having a degree of resilience, a cylindrical driven-member 18 supported inside the shell 15 by bearings 21, 29 and rollers 33, 34, arranged between the two members. The rollers 33, 34 are retained by a cage 39 acted upon by a drag-ring 52, and co-operate with wedging-surfaces 35-38, Fig. 5, on the member 18. On a drive in one direction or the other the rollers 33, 34 are moved into wedging engagement with either the surfaces 35, 36 or 37, 38, and torque is transmitted to the member 18. On a predetermined safe-torque being exceeded, the rollers over-ride the high-points of the cam surface of member 18 to break the drive by deforming the shell 15. The rollers 33, 34 are held in drive-released positions intermediate the wedging surfaces 35-38 by balls 41, 42 carried in longitudinal-grooves 43, 44 in the cage 39 and co-operating with groove-tracks 45 on the member 18. On reversal of the drive, the rollers 33, 34 are moved into wedging engagement with the other set of surfaces 35, 36 or 37, 38 to transmit torque in the opposite direction. Over-riding on excessive torque takes place in a similar manner in this direction. On resuming the original direction of drive the rollers 33, 34 re-engage with the wedging surfaces 35, 36 or 37, 38 to again transmit torque. The value of the torque transmitted can be varied by the adjustment of a sleeve 46 on a conical outer surface of the shell 15 by means of a screw-thread engagement at one end.
GB25430/56A 1954-02-05 1956-08-20 Safe torque drivers Expired GB809848A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US408410A US2791304A (en) 1954-02-05 1954-02-05 Safe torque driver
GB25430/56A GB809848A (en) 1956-08-20 1956-08-20 Safe torque drivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25430/56A GB809848A (en) 1956-08-20 1956-08-20 Safe torque drivers

Publications (1)

Publication Number Publication Date
GB809848A true GB809848A (en) 1959-03-04

Family

ID=10227539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25430/56A Expired GB809848A (en) 1954-02-05 1956-08-20 Safe torque drivers

Country Status (1)

Country Link
GB (1) GB809848A (en)

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