GB594381A - Improvements in or relating to gear boxes for universal screwcutting machines and the like - Google Patents

Improvements in or relating to gear boxes for universal screwcutting machines and the like

Info

Publication number
GB594381A
GB594381A GB1659245A GB1659245A GB594381A GB 594381 A GB594381 A GB 594381A GB 1659245 A GB1659245 A GB 1659245A GB 1659245 A GB1659245 A GB 1659245A GB 594381 A GB594381 A GB 594381A
Authority
GB
United Kingdom
Prior art keywords
shaft
gear wheels
bracket
variable
gear
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
GB1659245A
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.)
Dean Smith & Grace Ltd
Original Assignee
Dean Smith & Grace Ltd
Filing date
Publication date
Application filed by Dean Smith & Grace Ltd filed Critical Dean Smith & Grace Ltd
Publication of GB594381A publication Critical patent/GB594381A/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)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

594,381. Variable-speed gearing. DEAN, SMITH, & GRACE, Ltd., PRIDGEON, H., and BINNS, A. June 29, 1945, No. 16592. [Class 80(ii)] Variable-speed gearing for screw-cutting and like machines comprises a driving shaft 2 carrying an axially slidable pinion 6 meshing with any one of eccentrically mounted gear wheels 8 freely rotatable on a fixed shaft 3, and in turn meshing with gear wheels 9 fixed on a driven shaft 4. The gear wheels 8 are mounted so that their pitch lines are in alignment at points in a line adjacent to and parallel with shaft 2, to allow the selector pinion 6 carried by bracket 14 to be slid axially through sprocket and chain mechanism 17 by means of a control knob 18, to engage different trains to drive the shaft 4 at different speeds, one of the sprockets 17 being secured to the knob 18 and the other eccentrically mounted for belt tensioning purposes. An indicating cursor 19 on bracket 14, and a scale 20 are completely enclosed by a transparent window 21. Other speeds for a shaft 5 may be obtained by a sliding clutch and gears 10, 11, 12, or through sliding gears 22, 23 and a gear 13.
GB1659245A 1945-06-29 Improvements in or relating to gear boxes for universal screwcutting machines and the like Expired GB594381A (en)

Publications (1)

Publication Number Publication Date
GB594381A true GB594381A (en) 1947-11-10

Family

ID=1732423

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1659245A Expired GB594381A (en) 1945-06-29 Improvements in or relating to gear boxes for universal screwcutting machines and the like

Country Status (1)

Country Link
GB (1) GB594381A (en)

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