GB455362A - Method of and means for testing coins - Google Patents

Method of and means for testing coins

Info

Publication number
GB455362A
GB455362A GB84835A GB84835A GB455362A GB 455362 A GB455362 A GB 455362A GB 84835 A GB84835 A GB 84835A GB 84835 A GB84835 A GB 84835A GB 455362 A GB455362 A GB 455362A
Authority
GB
United Kingdom
Prior art keywords
windings
core
coin
wahman
levertinsgatan
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
GB84835A
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.)
GUNNAR WAHMAN
NILS BRATTSTROEM
Original Assignee
GUNNAR WAHMAN
NILS BRATTSTROEM
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 GUNNAR WAHMAN, NILS BRATTSTROEM filed Critical GUNNAR WAHMAN
Priority to GB84835A priority Critical patent/GB455362A/en
Publication of GB455362A publication Critical patent/GB455362A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00—Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

455,362. Transformers. WAHMAN, G., 77, Kungsgatan, and BRATTSTROM, N., 3, Levertinsgatan, both in Stockholm. Jan. 10, 1935, No. 848. Void [Abridged as open to inspection under Sect. 91 of the Acts, July 11, 1935]. [Class 38 (ii)] [See also Groups XVIII, II, XXXVI, and XL] A transformer, forming part of a coin-testing apparatus, comprises a core J2 with primary and secondary windings S15 and S16, the coin under test being introduced into a gap M1 in the core, and influencing the coupling between the windings to an extent determined by the intensity of the eddy currents induced in it. The windings are enclosed by a shield H1, and are separated by a partition H3 to reduce leakage flux between them.
GB84835A 1935-01-10 1935-01-10 Method of and means for testing coins Expired GB455362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB84835A GB455362A (en) 1935-01-10 1935-01-10 Method of and means for testing coins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB84835A GB455362A (en) 1935-01-10 1935-01-10 Method of and means for testing coins

Publications (1)

Publication Number Publication Date
GB455362A true GB455362A (en) 1935-07-11

Family

ID=9711508

Family Applications (1)

Application Number Title Priority Date Filing Date
GB84835A Expired GB455362A (en) 1935-01-10 1935-01-10 Method of and means for testing coins

Country Status (1)

Country Link
GB (1) GB455362A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589214A (en) * 1947-09-29 1952-03-18 Vendo Co Electrical coin selector
US3059749A (en) * 1959-12-16 1962-10-23 Paradynamics Inc Coin testing apparatus
US3401780A (en) * 1965-12-31 1968-09-17 Crouzet Sa Electrical coin tester
US3576244A (en) * 1969-01-08 1971-04-27 Vendo Co Coin acceptor having resistivity and permeability detector
US3599771A (en) * 1968-08-28 1971-08-17 Adolf Hinterstocker Coin testing device for comparing coin to be tested with a standard coin
DE2225228A1 (en) * 1971-05-24 1972-12-14 Mars Inc Method for testing electrically conductive coins and apparatus for carrying out the method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589214A (en) * 1947-09-29 1952-03-18 Vendo Co Electrical coin selector
US3059749A (en) * 1959-12-16 1962-10-23 Paradynamics Inc Coin testing apparatus
US3401780A (en) * 1965-12-31 1968-09-17 Crouzet Sa Electrical coin tester
US3599771A (en) * 1968-08-28 1971-08-17 Adolf Hinterstocker Coin testing device for comparing coin to be tested with a standard coin
US3576244A (en) * 1969-01-08 1971-04-27 Vendo Co Coin acceptor having resistivity and permeability detector
DE2225228A1 (en) * 1971-05-24 1972-12-14 Mars Inc Method for testing electrically conductive coins and apparatus for carrying out the method

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