GB818927A - Improvements relating to jacks - Google Patents

Improvements relating to jacks

Info

Publication number
GB818927A
GB818927A GB56356A GB56356A GB818927A GB 818927 A GB818927 A GB 818927A GB 56356 A GB56356 A GB 56356A GB 56356 A GB56356 A GB 56356A GB 818927 A GB818927 A GB 818927A
Authority
GB
United Kingdom
Prior art keywords
nut
screw
speed
box
shaft
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
GB56356A
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.)
KENNETH CHARLES ESTALL COLE
Original Assignee
KENNETH CHARLES ESTALL COLE
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 KENNETH CHARLES ESTALL COLE filed Critical KENNETH CHARLES ESTALL COLE
Priority to GB56356A priority Critical patent/GB818927A/en
Publication of GB818927A publication Critical patent/GB818927A/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
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • B23Q5/402—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw in which screw or nut can both be driven

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Transmission Devices (AREA)

Abstract

818,927. Testing physical qualities of materials. CARTER, A. C., and COLE, K. C. ESTALL-. April 4, 1957 [Jan. 6, 1956], No. 563/56. Class 106 (2). [Also in Group XXX] The load-applying member of a jack used for testing the physical qualities of materials is moved by a nut turning on a lead screw, the screw or the nut being driven and the other either driven or allowed to turn. As shown in Fig. 1, a load-applying member 19 is moved axially by a nut 12 on a lead screw 2, both the nut and the screw being rotated through worm gearing by an electric motor 30. The screw is driven at a constant speed from a shaft 33 and the nut at a variable speed, which may be faster or slower than that of the screw, through an infinitely-variable gear-box 38 controlled by a hand wheel 58. In a modification (Fig. 2, not shown) a 3-speed gear-box is substituted for the gear-box 38 and a 2-speed gear-box is inserted between the shaft 33 and the sprocket 35, giving six possible speed ratios between the shafts 6, 16. In another embodiment, Fig. 3, the drive to the shaft 16 is dispensed with and the nut is allowed to rotate at a speed controlled by a hand control 94, which presses a brake pad 90 against a disc 89 rotating with the shaft 16. Reverse movement of the member 19 is obtained in the last two embodiments by reversing the direction of the drive motor.
GB56356A 1956-01-06 1956-01-06 Improvements relating to jacks Expired GB818927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB56356A GB818927A (en) 1956-01-06 1956-01-06 Improvements relating to jacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56356A GB818927A (en) 1956-01-06 1956-01-06 Improvements relating to jacks

Publications (1)

Publication Number Publication Date
GB818927A true GB818927A (en) 1959-08-26

Family

ID=9706568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56356A Expired GB818927A (en) 1956-01-06 1956-01-06 Improvements relating to jacks

Country Status (1)

Country Link
GB (1) GB818927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199977A2 (en) * 1985-04-04 1986-11-05 Deere & Company Adjustable-length lift rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199977A2 (en) * 1985-04-04 1986-11-05 Deere & Company Adjustable-length lift rod
EP0199977A3 (en) * 1985-04-04 1987-06-16 Deere & Company Adjustable-length lift rod

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