US3619577A - Clapper counterweight - Google Patents

Clapper counterweight Download PDF

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Publication number
US3619577A
US3619577A US826395A US3619577DA US3619577A US 3619577 A US3619577 A US 3619577A US 826395 A US826395 A US 826395A US 3619577D A US3619577D A US 3619577DA US 3619577 A US3619577 A US 3619577A
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US
United States
Prior art keywords
clapper
counter
inertial member
electromagnetic
pivotal
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
US826395A
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English (en)
Inventor
Ernest G Hoffman
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.)
Veeder Industries Inc
Original Assignee
Veeder Industries Inc
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 Veeder Industries Inc filed Critical Veeder Industries Inc
Application granted granted Critical
Publication of US3619577A publication Critical patent/US3619577A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

  • the present invention relates to electromagnetic counting mechanisms of the type comprising a counter and an electromagnetic operator having an electromagnet and a pivotal clapper operable for indexing the counter in stepwise fashion by momentary energization of the electromagnet.
  • an electromagnetic counting mechanism 8 shown in FIG. 1 is generally of the type described in detail in the copending US. Pat. application Ser. No. 813,490 of L. J. LaPointe et al. filed Apr. 4, 1969, assigned to the assignee of the present application and entitled Electromagnetic Counting Mechanism.”
  • the electromagnetic counting mechanism 8 comprises a plastic frame 10 and an electromagnetic operator 12 and rotary counter 14 mounted on the frame.
  • the electromagnetic operator has a one-piece U-shaped magnetic core plate 16 with generally parallel legs 18, 20, a coil 22 encircling the leg 18, a one-piece pivotal magnetic armature 24 (having a clapper 25 and an integral yoke or verge 26) and an armature return spring 27 extending between the armature and frame.
  • the armature 24 is pivotally mounted on a rib 30 of the frame 10 and with the pivot end 31 of the armature 24 in engagement with the end of the core leg to minimize the air gap loss between the armature and the core leg 20.
  • the armature is mounted aside and extends in overlapping relationship with the ends of the core legs 20, 18 and is biased away from the leg 18 to its normal position shown in FIG. 1 by the return spring 27.
  • a shading ring 36 is mounted on the core leg 18 for which purpose the outer end of the core leg 18 is slotted to receive the shading ring.
  • a rotatable inertial member 41 is rotatably mounted on the counter wheel shaft 42 for inertially controlling the pivotal motion of the armature 24.
  • the shown inertial member 41 comprises a very light molded plastic lever 44 having an opening receiving the shaft 42 and a first long" radial arm 46 with a bifurcated end 48 loosely receiving an end 50 of the clapper 25.
  • the lever 44 has a second short" arm 52 extending generally diametrically opposite (approximately the "long arm 46 and formed with an outer transverse support 54 having opposed pockets 56 for receiving an elongated steel counterweight 58 (of square cross section) which in the shown embodiment weighs approximately 1 gram.
  • the counterweight 58 has an elongated face thereof in engagement with a flat outer face 60 of the transverse support 54 and has recessed ends 62 receiving upstanding side tangs 64 of the pockets 56. Also the pockets are formed with end tangs 66 which may be flexed outwardly for inserting the counterweight 58 on the support 54 and which have inner lips 68 for securely retaining the counterweight in place on the support 54 and within the pockets 56.
  • the inertial member 41 is adapted to control the motion of the armature in several important ways for improving the reliability and service life of the counting mechanism.
  • the counterweight 58 relative to the ar mature 24 (i.e., such that the center of gravity 70 of the rotatable inertial member 41 as well as the center of gravity 72 of the counterweight 58 are located on the opposite side of their axis of rotation from the pivotal axis of the armature 24 and such that the center of gravity 74 of the pivotal armature remains close to the plane of such axes) any vibration or other shock forces on the mechanism will not cause sufiicient pivotal actuation of the armature 24 to index the counter and in effect any shock caused torque on the armature 24 alone would be substantially offset by the shock caused torque on the inertial member 41.
  • the inertial member 41 also provides for assuring relatively even motion (including relatively even acceleration and deceleration) of the annature even with a fluctuating electromagnetic field due for example to AC operation of the electromagnet. Accordingly, the armature will not move erratically during AC operation to miscount or to generate an overcount.
  • the inertial member 41 provides for controlling the motion of the armature to prevent overcounting or miscounting from vibration or other shock or from a fluctuating magnetic field due for example to AC operation, and for additionally substantially increasing the service life of the counter and the maximum counter speed.
  • an electromagnetic counting device having a counter and an electromagnetic operator adapted for indexing the counter comprising an electromagnet, a clapper adapted to be pivoted from a withdrawn for pivotally retracting the clapper to its withdrawn position upon deenergization of the elec' troma'gnet, and indexing means operable by the clapper for indexing the counter in stepwise fashion upon pivotal movement of the clapper
  • the electromagnetic operator comprises a rotatable inertial member connected to be rotated in opposite angular directions by the clapper in conjunction with the clapper movement in opposite pivotal directions for inertiaily controlling the pivotal motion of the clapper for improving the operation of the counter, the inertial member and clapper having an interfitting connection to provide for rotating the inertial member in opposite angular directions in conjunction with the clapper movement in opposite pivotal directions.
  • the inertial member comprises a rotatable lever connected to the clapper and a counterweight mounted on the lever on the opposite side of the axis of rotation of the inertial member from the pivotal axis of the clapper.
  • the counter comprises at least one rotatable counter wheel and wherein the indexing means of the electromagnetic operator comprises a star wheel on the counter wheel and a verge integral with the clapper for pivotal movement therewith, and wherein the center of gravity of the combined verge and clapper is approximately in the plane of the axes of the clapper and inertial member.
  • an electromagnetic counting device having a counter and an electromagnetic operator adapted for indexing the counter comprising an electromagnet, a clapper adapted to be pivoted from a withdrawn position to an extended position by energization of the electromagnet, spring means position to an extended position by energization of the electromagnet, spring means for pivotally retracting the clapper to its withdrawn position upon deenergization of the electromagnet, and indexing means operable by the clapper for indexing the counter in stepwise fashion upon pivotal movement of the clapper, the improvement wherein the electromagnetic operator comprises a rotatable inertial member connected to be rotated in opposite angular directions by the clapper in conjunction with the clapper movement in opposite pivotal directions for inertially controlling the pivotal motion of the clapper for improving the operation of the counter, the centers of gravity of the inertial member and clapper being related to their respective axes to inertially bias the clapper in opposite pivotal directions as a result of shock on the counting device
  • the inertial member has an arm with a bifurcated end receiving an edge of the clapper.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnets (AREA)
  • Toys (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Dry Shavers And Clippers (AREA)
US826395A 1969-05-21 1969-05-21 Clapper counterweight Expired - Lifetime US3619577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82639569A 1969-05-21 1969-05-21

Publications (1)

Publication Number Publication Date
US3619577A true US3619577A (en) 1971-11-09

Family

ID=25246424

Family Applications (1)

Application Number Title Priority Date Filing Date
US826395A Expired - Lifetime US3619577A (en) 1969-05-21 1969-05-21 Clapper counterweight

Country Status (6)

Country Link
US (1) US3619577A (enExample)
JP (1) JPS515551B1 (enExample)
CH (1) CH506847A (enExample)
DE (1) DE2023211C3 (enExample)
FR (1) FR2043570B1 (enExample)
GB (1) GB1273511A (enExample)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761015A (en) * 1971-06-02 1973-09-25 English Numbering Machines Electrical impulse counter with shockproofing mechanism
US3962566A (en) * 1974-07-30 1976-06-08 Veeder Industries, Inc. Electromagnetic counter
US4031361A (en) * 1976-01-14 1977-06-21 Rockwell International Corporation Electromechanical counter
US4250404A (en) * 1978-04-12 1981-02-10 Tamura Electric Works, Ltd. Electromagnetic counters
WO1981001212A1 (en) * 1979-10-26 1981-04-30 Mecom Standard Ltd Number wheel counters
US4532415A (en) * 1981-06-23 1985-07-30 Mecom Standard Limited Number wheel counters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108552U (enExample) * 1977-02-03 1978-08-31
JPS54160449U (enExample) * 1978-04-28 1979-11-09

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US718104A (en) * 1902-03-05 1903-01-13 Reece Folding Machine Co Registering mechanism.
US1209382A (en) * 1914-08-14 1916-12-19 Arthur J Halle Cyclometer.
US2673685A (en) * 1951-01-29 1954-03-30 Durant Mfg Co Intermittent counter drive
US3461277A (en) * 1966-03-08 1969-08-12 Veeder Industries Inc Magnetic counter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US718104A (en) * 1902-03-05 1903-01-13 Reece Folding Machine Co Registering mechanism.
US1209382A (en) * 1914-08-14 1916-12-19 Arthur J Halle Cyclometer.
US2673685A (en) * 1951-01-29 1954-03-30 Durant Mfg Co Intermittent counter drive
US3461277A (en) * 1966-03-08 1969-08-12 Veeder Industries Inc Magnetic counter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761015A (en) * 1971-06-02 1973-09-25 English Numbering Machines Electrical impulse counter with shockproofing mechanism
US3962566A (en) * 1974-07-30 1976-06-08 Veeder Industries, Inc. Electromagnetic counter
US4031361A (en) * 1976-01-14 1977-06-21 Rockwell International Corporation Electromechanical counter
US4250404A (en) * 1978-04-12 1981-02-10 Tamura Electric Works, Ltd. Electromagnetic counters
WO1981001212A1 (en) * 1979-10-26 1981-04-30 Mecom Standard Ltd Number wheel counters
US4532415A (en) * 1981-06-23 1985-07-30 Mecom Standard Limited Number wheel counters

Also Published As

Publication number Publication date
DE2023211A1 (de) 1970-11-26
GB1273511A (en) 1972-05-10
FR2043570B1 (enExample) 1976-03-19
FR2043570A1 (enExample) 1971-02-19
DE2023211C3 (de) 1978-08-31
CH506847A (de) 1971-04-30
JPS515551B1 (enExample) 1976-02-20
DE2023211B2 (de) 1977-12-22

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