GB778440A - Improvements relating to apparatus for measuring variation of forces in linkages, cables, chains or the like - Google Patents

Improvements relating to apparatus for measuring variation of forces in linkages, cables, chains or the like

Info

Publication number
GB778440A
GB778440A GB21813/55A GB2181355A GB778440A GB 778440 A GB778440 A GB 778440A GB 21813/55 A GB21813/55 A GB 21813/55A GB 2181355 A GB2181355 A GB 2181355A GB 778440 A GB778440 A GB 778440A
Authority
GB
United Kingdom
Prior art keywords
core
cable
attached
coils
linkage
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
GB21813/55A
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Publication of GB778440A publication Critical patent/GB778440A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

778,440. Electric measuring systems. DAIMLER-BENZ AKT.-GES. July 28, 1955 [July 28, 1954], No. 21813/55. Class 40(1). Apparatus for measuring variations in tensile or compressive stress in, e.g. a cable comprises an elastic linkage having a coil attached to one end and a core attached to the other end of the cable, whereby relative movements of the two ends produced by variations in stress produce a change in inductance which may be measured. The coil and core may alternatively be two electrodes of a condenser whose capacity is measured. As shown (Fig. 2), two similar coils 12a, 12b are attached to one side of the linkage, and a core comprising two soft iron parts 14a, 14b separated by a brass part 14 is attached to the other side of the linkage, the coils 12a, 12b being connected in a H.F. bridge circuit. The core is initially adjusted by screw 13 to balance the inductances of coils 12a, 12b and subsequent relative movement is indicated by the bridge unbalance current. The measuring unit is mounted in a box 1 (Fig. 1), with an attached threaded stem 15 and coupling 16 for connection to a cable. The core and screw 13 are carried by a stem 7, also provided with a cable coupling 19, which has two flexible plates 5, 6 clamped inside the box 1 by spacers 4 to allow movement between the two ends of the cable.
GB21813/55A 1954-07-28 1955-07-28 Improvements relating to apparatus for measuring variation of forces in linkages, cables, chains or the like Expired GB778440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE778440X 1954-07-28

Publications (1)

Publication Number Publication Date
GB778440A true GB778440A (en) 1957-07-10

Family

ID=6686969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21813/55A Expired GB778440A (en) 1954-07-28 1955-07-28 Improvements relating to apparatus for measuring variation of forces in linkages, cables, chains or the like

Country Status (1)

Country Link
GB (1) GB778440A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092995A (en) * 1960-10-28 1963-06-11 W C Dillon And Company Force measuring device
US4606231A (en) * 1985-03-06 1986-08-19 Sigma Instruments, Inc. Strain gauge measuring system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092995A (en) * 1960-10-28 1963-06-11 W C Dillon And Company Force measuring device
US4606231A (en) * 1985-03-06 1986-08-19 Sigma Instruments, Inc. Strain gauge measuring system

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