US3268714A - Bidirectional polarized electromagnetic counter - Google Patents

Bidirectional polarized electromagnetic counter Download PDF

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Publication number
US3268714A
US3268714A US480977A US48097765A US3268714A US 3268714 A US3268714 A US 3268714A US 480977 A US480977 A US 480977A US 48097765 A US48097765 A US 48097765A US 3268714 A US3268714 A US 3268714A
Authority
US
United States
Prior art keywords
pawl
electromagnet
counter
wheel
armature
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
US480977A
Other languages
English (en)
Inventor
Jr Nathaniel B Wales
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.)
METRODYNAMICS CORP
Original Assignee
METRODYNAMICS CORP
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 METRODYNAMICS CORP filed Critical METRODYNAMICS CORP
Priority to US480977A priority Critical patent/US3268714A/en
Priority to BE683973D priority patent/BE683973A/xx
Priority to GB36066/66A priority patent/GB1097700A/en
Priority to SE11190/66A priority patent/SE309867B/xx
Priority to DE19661524579 priority patent/DE1524579A1/de
Application granted granted Critical
Publication of US3268714A publication Critical patent/US3268714A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M3/00—Counters with additional facilities
    • G06M3/14—Counters with additional facilities for registering difference of positive and negative actuations
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/08—Design features of general application for actuating the drive
    • G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
    • G06M1/102—Design features of general application for actuating the drive by electric or magnetic means by magnetic or electromagnetic means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/08—Design features of general application for actuating the drive
    • G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
    • G06M1/102—Design features of general application for actuating the drive by electric or magnetic means by magnetic or electromagnetic means
    • G06M1/104—Design features of general application for actuating the drive by electric or magnetic means by magnetic or electromagnetic means electromagnets, clicks

Definitions

  • add-subtract counters have in general required the use of two separate drive magnets to achieve reversibility.
  • the present invention greatly simplifies such reversible counters by teaching a novel principle in which use is made of the magnetic leakage field of a single drive electromagnet to select by means of a small permanent magnet responsive to this leakage field, which of two oppositely directed ratchet pawls will be enabled to drive the counter.
  • This polarization principle thus makes possible an economic and compact design for reversible magnetic counters.
  • the principal object of this invention is to provide a means for utilizing the magnetic leakage field of a counter-driving electromagnet to select the direction of counting.
  • Another object of this invention is to provide a design for magnetic counters which will add for one polarity of applied electric impulse, and which will subtract for the opposite said polarity.
  • Still another object of the subject invention is to provide a reversible counter design in which the selection of counting direction and the storage of counter drive energy in a spring is accomplished during the energization of an electromagnet, while the driving of the counter is accomplished after the de-energization of said magnet by the energy stored in said spring, thereby simplifying the circuitry necessary [for propagating carry signals between different orders of interconnected counters.
  • numeral 1 designates a magnet coil contained in a bobbin 2 which surrounds a soft iron pole piece 3, which in turn, is secured to a soft iron return magnetic circuit member 4.
  • a soft iron armature 5 is provided, pivotally secured at one end to member 4, and engaging at its opposite end the fingers 6 of a drive lever 7.
  • Lever 7 is pivoted by a pin 8, secured to a counter frame 9, to which member 4 is also secured.
  • a spring 10 extends between a tab 11 secured to lever 7 and an anchor pin 12 also secured to frame 9.
  • Lever 7 is provided with two pivot pins 13 and 14 on which are freely journalled the subtracting pawl 15, and the adding pawl 16, respectively.
  • Pawls 15 and 16 are linked together by a pawl link 17 in a parallelogram configuration so that they are constrained to angulate synchrononsly with one another.
  • Pawl 16 is provided with a cylindrical permanent magnet secured thereto adjacent to and approximately parallel to the average position of armature 5.
  • the subject counter is provided with a utilization Wheel 19 which may be a display number wheel, or a print out wheel, or a switching rotor for readout and carry transfer, on a combination of any or all of these.
  • a utilization Wheel 19 which may be a display number wheel, or a print out wheel, or a switching rotor for readout and carry transfer, on a combination of any or all of these.
  • Wheel 19 is journalled on a pin 20 secured to frame 9, and is provided with a bidirectional detent cam 21 against which a spring detent arm 22 secured to frame 9 bears, so as to urge wheel 19 to index to a predetermined plurality of angular registrations.
  • Wheel 19 which is preferably molded of a plastic material, is also integrally provided with two oppositely direction sets of ratchet teeth 23 and 24 lying in different planes, so as to co-operate with pawls 15 and 16, respectively, which may be seen to be on opposite sides of wheel 19.
  • a stop tooth 26 integral with lever 7 engages one of the teeth of ratchet 23.
  • the magnetic field linking members 3, 4 and 5 will then cause armature 5 to rotate counterclockwise about its heel on member 4 so as to close the gap between 3 and 5. Since armature 5 is coupled to lever 7 by fingers 6, the above motion of armature 5 will rotate lever 7 clockwise about pivot 8, while extending spring 10 and storing potential energy therein.
  • lever 7 will carry pawl 16 to engage the next tooth of ratchet 24 and remain engaged therewith as long as coil 1 is continued to be energized.
  • Tooth 26 is designed to destroy the momentum of any spring driven displacement of wheel 19 at the end of a counting stroke.
  • a bidirectional counter comprising: an electromagnet; a permanent magnet located'in the leakage field of said electromagnet when energized; a register member; means to drive said register member in incremental displacement by energy supplied by said electromagnet; and means responsive to the interaction of said permanent magnetic and said leakage field to select the direction of said register displacement.
  • a bidirectional counter comprising: a direct current electromagnet having a coil and an armature; a register wheel having two oppositely directed sets of ratchet teeth; means. to detent said register wheel in a plurality of predetermined positions; a forward drive pawl; a reverse drive pawl; mutually exclusive means to engage either said forward pawl or said reverse pawl in operative driving engagement with said corresponding set of ratchet teeth; means responsive to energy supplied by said electromagnet through the motion of said armature to drive said forward pawl or said reverse pawl into causing an incremental displacement of said register wheel; a permanent magnet; and means responsive to the interaction of said permanent magnet with the magnetic field of said electromagnet for selecting which of said pawls will displace said register wheel.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Knitting Machines (AREA)
US480977A 1965-08-19 1965-08-19 Bidirectional polarized electromagnetic counter Expired - Lifetime US3268714A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US480977A US3268714A (en) 1965-08-19 1965-08-19 Bidirectional polarized electromagnetic counter
BE683973D BE683973A (forum.php) 1965-08-19 1966-07-12
GB36066/66A GB1097700A (en) 1965-08-19 1966-08-11 Two-way electro magnetic counters
SE11190/66A SE309867B (forum.php) 1965-08-19 1966-08-18
DE19661524579 DE1524579A1 (de) 1965-08-19 1966-08-19 Elektromagnetische Zaehlvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480977A US3268714A (en) 1965-08-19 1965-08-19 Bidirectional polarized electromagnetic counter

Publications (1)

Publication Number Publication Date
US3268714A true US3268714A (en) 1966-08-23

Family

ID=23910081

Family Applications (1)

Application Number Title Priority Date Filing Date
US480977A Expired - Lifetime US3268714A (en) 1965-08-19 1965-08-19 Bidirectional polarized electromagnetic counter

Country Status (5)

Country Link
US (1) US3268714A (forum.php)
BE (1) BE683973A (forum.php)
DE (1) DE1524579A1 (forum.php)
GB (1) GB1097700A (forum.php)
SE (1) SE309867B (forum.php)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725648A (en) * 1971-06-24 1973-04-03 Badger Meter Inc Electromagnetic register apparatus
US3741472A (en) * 1972-01-24 1973-06-26 Lectra Data Inc Electrical counter
US3748445A (en) * 1972-02-22 1973-07-24 J Burton Bidirectional counter
US3778600A (en) * 1972-03-15 1973-12-11 J Burton Modular counter carry circuit
US3914583A (en) * 1972-07-17 1975-10-21 Itt Decade or the like and components thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725648A (en) * 1971-06-24 1973-04-03 Badger Meter Inc Electromagnetic register apparatus
US3741472A (en) * 1972-01-24 1973-06-26 Lectra Data Inc Electrical counter
US3748445A (en) * 1972-02-22 1973-07-24 J Burton Bidirectional counter
US3778600A (en) * 1972-03-15 1973-12-11 J Burton Modular counter carry circuit
US3914583A (en) * 1972-07-17 1975-10-21 Itt Decade or the like and components thereof

Also Published As

Publication number Publication date
SE309867B (forum.php) 1969-04-08
DE1524579A1 (de) 1970-08-20
GB1097700A (en) 1968-01-03
BE683973A (forum.php) 1966-12-16

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