US1887684A - Bidding apparatus - Google Patents

Bidding apparatus Download PDF

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Publication number
US1887684A
US1887684A US87713A US8771326A US1887684A US 1887684 A US1887684 A US 1887684A US 87713 A US87713 A US 87713A US 8771326 A US8771326 A US 8771326A US 1887684 A US1887684 A US 1887684A
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US
United States
Prior art keywords
voltage
tubes
current
series
resistance
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 - Lifetime
Application number
US87713A
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English (en)
Inventor
Huizinga Marten Johann
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1887684A publication Critical patent/US1887684A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1809—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for auctioneering devices

Definitions

  • This invention relates to a si alling-or called glow discharge tubes, which are tubes indicating device so constructed that it enfilled with inert gases and which are withables any desired number of persons to give out filament, which hitherto were often used a signal, as for instance at auctions where, for advertising purposes, that is as the sowhile the auctioneer increases or reduces the called letter lamps. It is a characteristic prices, a purchaser will at a "ven moment of these kinds of lamps that'they start lightindicate that he wishes to pure ase. mg at a voltage of for instance 220 volts and Various arrangements, of this kind are continue lighting even if the voltage is de- Jmown, all of which are operated by means of creased to e. g. 140- volts, but that they do 10 electromagnetic rela s. v not start lightlng at such low voltage.
  • the order or the right order can not always be tubes are arranged in parallel with an ortraced.
  • There will almost sistance which may be of the order of invariably beaspace oftime between the momagnitude of the internal resistance of a ments the apparatus is operated by the relagldwlng tube.
  • the tube included 3 may sometimes be very small, and therefore therein will be lighted by the full voltage will only manifest itself when the velocity of 220 volts, which is higher than the diswith which the apparatus functions is not charge voltage.
  • the potential drops to a value which due to the construction or the arrangement will be dependent in inverse ratio on the 35 of the apparatus. value of the series resistance.
  • the signalling the series resistance is 8000 ohms and the apparatus in question is constructed so that lighted tube has a resistance of 16000 ohms when asignal is given the signal itself prethen the voltage will be decreased from 220 vents another person from iving such sigvolts to approximately 140 volts.
  • This voltnal, at the same time thereiy securing the age is not suflicient to light the other lamps, desired accuracy above referred to. so that in this way the whole signalling de-
  • useis made vice is put out of operation for the other of a signalling apparatus which starts oppurchasers until the first purchaser has reerating at a predetermined voltage but which leased his contact.
  • Discharge voltage and minimum light voltage will depart from each other more according to the tubes being designed for starting at a higher voltage.
  • the current circuit of the signalling lamp may be adapted to lock itself, which locking is only removed when the current circuit is interrupted by the auction master. As this may be 'efiected with well. known means a further description in detail of such arrangements will not be necessary.
  • An electric signalling system having a current limiting means, comprising a main circuit including a source of current, and a plurality of branch circuits connected in parallel across said main circuit, each branch circuit including in series, a glow discharge tube with which the current limiting means is connected in series, and a switch, the glow discharge tube being activated by the switch first operated, producing, independently of any mechanically moving part, a potential dro in the main circuit across the current limiting means to a value insuificient to activate any other of the glow discharge tubes.
  • An electric signalling system comprising a main circuit including a source of current, a current limiting means, and a plurality of branch circuits connected in parallel across said main circuit, each branch circuit including in series, a glow discharge tube, with which the current limiting means is connected in series, and a switch, the glow discharge tube activated by the switch first operated producing, independently of any mechanically moving part, a potential drop in the main circuit, across said current limiting means, to a value insufiicient to activate any of the other glow discharge tubes.
  • a device as claimed in claim 2 in combination with an automatic price indicator including means for stopping the indicator when a tube is energized.
  • the current limiting means having such value that the lighting of one tube by the closing of its switch reduces the potential in said circuits which thereafter is available to be vimpressed upon the other tubes, to a voltage below the lighting potential of said other tubes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US87713A 1925-02-18 1926-02-11 Bidding apparatus Expired - Lifetime US1887684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL247953X 1925-02-18

Publications (1)

Publication Number Publication Date
US1887684A true US1887684A (en) 1932-11-15

Family

ID=19780934

Family Applications (1)

Application Number Title Priority Date Filing Date
US87713A Expired - Lifetime US1887684A (en) 1925-02-18 1926-02-11 Bidding apparatus

Country Status (5)

Country Link
US (1) US1887684A (enrdf_load_stackoverflow)
BE (1) BE332340A (enrdf_load_stackoverflow)
FR (1) FR611317A (enrdf_load_stackoverflow)
GB (1) GB247953A (enrdf_load_stackoverflow)
NL (1) NL20087C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902685A (en) * 1954-02-09 1959-09-01 Edward A Davis Position indicating circuit
US2960687A (en) * 1948-10-27 1960-11-15 Gerson H Robison Coincidence occurrence indicator
US3200392A (en) * 1960-12-02 1965-08-10 Ite Circuit Breaker Ltd Counting circuit for counting cell railures in a rectifier system
US3281821A (en) * 1962-12-12 1966-10-25 Helen Hiatt Joy Electric visual bidder system having interlock circuitry connecting the bidding stations

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960687A (en) * 1948-10-27 1960-11-15 Gerson H Robison Coincidence occurrence indicator
US2902685A (en) * 1954-02-09 1959-09-01 Edward A Davis Position indicating circuit
US3200392A (en) * 1960-12-02 1965-08-10 Ite Circuit Breaker Ltd Counting circuit for counting cell railures in a rectifier system
US3281821A (en) * 1962-12-12 1966-10-25 Helen Hiatt Joy Electric visual bidder system having interlock circuitry connecting the bidding stations

Also Published As

Publication number Publication date
FR611317A (fr) 1926-09-25
NL20087C (enrdf_load_stackoverflow)
GB247953A (en) 1927-03-10
BE332340A (enrdf_load_stackoverflow)

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