GB727171A - Instrument for recording weights and modifications in weight - Google Patents

Instrument for recording weights and modifications in weight

Info

Publication number
GB727171A
GB727171A GB27105/52A GB2710552A GB727171A GB 727171 A GB727171 A GB 727171A GB 27105/52 A GB27105/52 A GB 27105/52A GB 2710552 A GB2710552 A GB 2710552A GB 727171 A GB727171 A GB 727171A
Authority
GB
United Kingdom
Prior art keywords
coil
current
weight
core
weighing
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
GB27105/52A
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
Publication of GB727171A publication Critical patent/GB727171A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G7/00Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
    • G01G7/02Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electromagnetic action
    • G01G7/04Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electromagnetic action with means for regulating the current to solenoids

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)

Abstract

727,171. Electric weighing machines. EYRAUD, I., and EYRAUD, C. Oct. 28, 1952 [Nov. 5, 1951; Dec. 14, 1951], No. 27105/52. Class 40 (1). [Also in Group XL (b)] In a weighing-machine wherein the weight of a body 12 (Fig. 1) is balanced by the electromagnetic force exerted by a solenoid 7 energized by a current determined by a photo-cell 5 whose light input is controlled by a screen 2 attached to the weighing beam, the moving system is such that its centre of gravity is located on the fulcrum 19 by adjusting the position of a weight 20, so that equilibrium is fully determined by the current in coil 7 and is independent of the angular disposition of the beam. The current in'coil 7 is proportional to the weight of the body 12 and is measured across a series resistor 8. It may be augmented by a current proportional to its rate of change derived from the amplifying circuit (not shown) to provide damping. The coil 7 is preferably shaped so that the force on a core 18 is independent of the position of the core in the coil. The core 18 may alternatively be a coil fed with a constant current or with the same current as the main coil 7.
GB27105/52A 1951-11-05 1952-10-28 Instrument for recording weights and modifications in weight Expired GB727171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR727171X 1951-11-05

Publications (1)

Publication Number Publication Date
GB727171A true GB727171A (en) 1955-03-30

Family

ID=9111132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27105/52A Expired GB727171A (en) 1951-11-05 1952-10-28 Instrument for recording weights and modifications in weight

Country Status (1)

Country Link
GB (1) GB727171A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075330B (en) * 1960-02-11 Scribbans-Kemp Limited, London Electric scales
CN110307886A (en) * 2019-07-16 2019-10-08 深圳市杰曼科技股份有限公司 A kind of big tare weight Weight detecting device and its detection method based on electromagnetic force
CN112748034A (en) * 2019-10-31 2021-05-04 中国石油化工股份有限公司 Device and method for quantitatively determining surface acidity of material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075330B (en) * 1960-02-11 Scribbans-Kemp Limited, London Electric scales
CN110307886A (en) * 2019-07-16 2019-10-08 深圳市杰曼科技股份有限公司 A kind of big tare weight Weight detecting device and its detection method based on electromagnetic force
CN112748034A (en) * 2019-10-31 2021-05-04 中国石油化工股份有限公司 Device and method for quantitatively determining surface acidity of material

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