GB115778A - Improvements in Multi-gear Headstocks for Lathes and other Machine Tools. - Google Patents

Improvements in Multi-gear Headstocks for Lathes and other Machine Tools.

Info

Publication number
GB115778A
GB115778A GB1890417A GB1890417A GB115778A GB 115778 A GB115778 A GB 115778A GB 1890417 A GB1890417 A GB 1890417A GB 1890417 A GB1890417 A GB 1890417A GB 115778 A GB115778 A GB 115778A
Authority
GB
United Kingdom
Prior art keywords
gear
clutch
sliding
clutches
lathes
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
GB1890417A
Inventor
Joseph Macnab
George Harry Smith
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 GB1890417A priority Critical patent/GB115778A/en
Publication of GB115778A publication Critical patent/GB115778A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12—Mechanical drives with means for varying the speed ratio
    • B23Q5/14—Mechanical drives with means for varying the speed ratio step-by-step
    • B23Q5/142—Mechanical drives with means for varying the speed ratio step-by-step mechanically-operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/02—Driving working spindles
    • B23Q2705/06—Mechanical drives with means for varying the speed ratio
    • B23Q2705/062—Mechanical drives with means for varying the speed ratio for lathes
    • B23Q2705/064—Mechanical drives with means for varying the speed ratio for lathes mechanically controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

115,778. Macnab, J., and Smith, G. H. Dec. 20, 1917. Turning.-In a multiple-gear headstock for lathes or other machine tools, shown diagrammatically in Fig. 3, and in which the primary gear M - - T is of the friction-clutch operated type, having clutches C - - F, and the secondary gear W - - Z has clutches of the sliding-gear type, the means for operating the sliding gear is so constructed that the clutch-operating bar 13 of the main clutch in the driving-pulley 14 is disengaged before either of the sliding-gear clutches are put into action. Also, the direct-drive pinion H and clutch A, and the reverse-drive pinion J and its clutch B are both mounted on the driving- pulley 14<a>, and operate through all the speed changes. The handle for sliding the clutch gear G operates through a pin and segmental slot, allowing considerable lost motion, during which motion in either direction the main clutch is disengaged, and re-engages after the sliding portions have engaged.
GB1890417A 1917-12-20 1917-12-20 Improvements in Multi-gear Headstocks for Lathes and other Machine Tools. Expired GB115778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1890417A GB115778A (en) 1917-12-20 1917-12-20 Improvements in Multi-gear Headstocks for Lathes and other Machine Tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1890417A GB115778A (en) 1917-12-20 1917-12-20 Improvements in Multi-gear Headstocks for Lathes and other Machine Tools.

Publications (1)

Publication Number Publication Date
GB115778A true GB115778A (en) 1918-05-23

Family

ID=32484227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1890417A Expired GB115778A (en) 1917-12-20 1917-12-20 Improvements in Multi-gear Headstocks for Lathes and other Machine Tools.

Country Status (1)

Country Link
GB (1) GB115778A (en)

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