GB457517A - Improvements relating to screw tapping machines - Google Patents

Improvements relating to screw tapping machines

Info

Publication number
GB457517A
GB457517A GB23453/35A GB2345335A GB457517A GB 457517 A GB457517 A GB 457517A GB 23453/35 A GB23453/35 A GB 23453/35A GB 2345335 A GB2345335 A GB 2345335A GB 457517 A GB457517 A GB 457517A
Authority
GB
United Kingdom
Prior art keywords
spindle
shank
balls
tap
grooves
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
GB23453/35A
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.)
BENJAMIN LAURENCE PIERCE
James Archdale and Co Ltd
Original Assignee
BENJAMIN LAURENCE PIERCE
James Archdale and 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 BENJAMIN LAURENCE PIERCE, James Archdale and Co Ltd filed Critical BENJAMIN LAURENCE PIERCE
Priority to GB23453/35A priority Critical patent/GB457517A/en
Publication of GB457517A publication Critical patent/GB457517A/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
    • F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
    • F16D7/06—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers
    • F16D7/10—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers moving radially between engagement and disengagement
    • 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
    • B23B31/08—Chucks holding tools yieldably
    • B23B31/083—Chucks holding tools yieldably axially
    • B23B31/086—Chucks holding tools yieldably axially having an overload clutch

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

457,517. Yielding - drive for taps; slipping clutches. ARCHDALE & CO., Ltd., J., JEWSBURY, J., and PIERCE, B. L., Ledsam Street, Birmingham. Aug. 21, 1935, No. 23453. [Class 83 (iii)] [See also Group XXIV] In a yielding-drive device for a tapping- machine, the machine spindle a is formed hollow so as to receive the shank b of the tap chuck c, longitudinal grooves being formed in the shank to engage rows of balls e located in radial recesses in the spindle a. A split sleeve f normally maintains the balls in engagement with the grooves to drive the tap but allows the balls to yield and stop the drive when the tap encounters excessive resistance. The sleeve is fixed axially by collars g on the spindle and is prevented from rotating by pegs h engaging the split h<1> therein. A spring i in the spindle engages a thrust washer on the shank b so that feed of the spindle may continue without damage after rotation of the tap has stopped. Axial movement of the shank within the spindle is limited by the balls engaging the ends of the grooves, or a shoulder on the shank. In a modification the radial recesses in the spindle are replaced by axial slots which receive cylindrical rollers engaging the grooves of the shank, a ball being placed at each end of each roller.
GB23453/35A 1935-08-21 1935-08-21 Improvements relating to screw tapping machines Expired GB457517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23453/35A GB457517A (en) 1935-08-21 1935-08-21 Improvements relating to screw tapping machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23453/35A GB457517A (en) 1935-08-21 1935-08-21 Improvements relating to screw tapping machines

Publications (1)

Publication Number Publication Date
GB457517A true GB457517A (en) 1936-11-30

Family

ID=10195873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23453/35A Expired GB457517A (en) 1935-08-21 1935-08-21 Improvements relating to screw tapping machines

Country Status (1)

Country Link
GB (1) GB457517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH708612A1 (en) * 2013-09-27 2015-03-31 Amtru Business Ag A bevelling tool and method of operating such.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH708612A1 (en) * 2013-09-27 2015-03-31 Amtru Business Ag A bevelling tool and method of operating such.

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