GB183308A - Improvements in nut tapping machines - Google Patents

Improvements in nut tapping machines

Info

Publication number
GB183308A
GB183308A GB1480321A GB1480321A GB183308A GB 183308 A GB183308 A GB 183308A GB 1480321 A GB1480321 A GB 1480321A GB 1480321 A GB1480321 A GB 1480321A GB 183308 A GB183308 A GB 183308A
Authority
GB
United Kingdom
Prior art keywords
valve
exhaust
spindle
bar
wheel
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
GB1480321A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1480321A priority Critical patent/GB183308A/en
Publication of GB183308A publication Critical patent/GB183308A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
    • B23G1/18—Machines with one working spindle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

183,308. Clay, S. B. May, 27, 1021. Tapping.-A multiple-spindle nut-tapping machine, designed to stop working after tapping a predetermined number of blanks, has the tapspindles lifted by fluid pressure and fed by gravity. The tap-spindle B of each unit is driven by ordinary toothed gearing and moves axially with the rod H<1> of a piston operating in the cylinder G. A slide-valve for admission and exhaust of working-fluid is mounted in a chest I and is controlled either manually by actuation of the lever 20, or automatically by a bar 26, Fig. 2, mounted on the piston-rod. A mutilated toothed wheel J carried by the bar 26, has as many teeth as there are blanks to be tapped in each period of working, and is adapted to lift the valve for exhaust b one of its teeth engaging a pin 36 on the valve spindle. The wheel is rotated one tooth at the end of each downward stroke of the tap, by a fixed spring-pressed pawl 34, and is retained from retrograde movement by a second pawl 38. The valve is moved to cut off exhaust and open to admission by the bar 26 engaging a nut 25 on a valve-operating spindle 24. Operation proceeds in this sequence till failure of the valve to open to exhaust occurs owing to the pressure of a space on the wheel J. The blank-feeding mechanism forming the subject-matter of Specification 183,785 is shown on the drawings.
GB1480321A 1921-05-27 1921-05-27 Improvements in nut tapping machines Expired GB183308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1480321A GB183308A (en) 1921-05-27 1921-05-27 Improvements in nut tapping machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1480321A GB183308A (en) 1921-05-27 1921-05-27 Improvements in nut tapping machines

Publications (1)

Publication Number Publication Date
GB183308A true GB183308A (en) 1922-07-27

Family

ID=10047734

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1480321A Expired GB183308A (en) 1921-05-27 1921-05-27 Improvements in nut tapping machines

Country Status (1)

Country Link
GB (1) GB183308A (en)

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