US3786240A - Presettable subtracting counter - Google Patents

Presettable subtracting counter Download PDF

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Publication number
US3786240A
US3786240A US00316287A US3786240DA US3786240A US 3786240 A US3786240 A US 3786240A US 00316287 A US00316287 A US 00316287A US 3786240D A US3786240D A US 3786240DA US 3786240 A US3786240 A US 3786240A
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US
United States
Prior art keywords
pinion
lever
signaling
counter
set forth
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
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US00316287A
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English (en)
Inventor
H Pfeiffer
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.)
J Hengstler KG
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J Hengstler KG
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Filing date
Publication date
Priority claimed from DE19722236098 external-priority patent/DE2236098C3/de
Application filed by J Hengstler KG filed Critical J Hengstler KG
Application granted granted Critical
Publication of US3786240A publication Critical patent/US3786240A/en
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Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M3/00—Counters with additional facilities
    • G06M3/02—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine
    • G06M3/021—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine with drums type indicating means
    • G06M3/022—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine with drums type indicating means by subtracting

Definitions

  • ABSTRACT A digit wheel is adapted to be preset to a preset position corresponding to a count higher than zero and to perform a rotational subtracting movementfrom said preset position to and beyond a position corresponding to a zero count.
  • a cutoff pinion is operatively connected to said digit wheel and arranged to rotate to a signaling position in response to a subtracting movement of said digit wheel beyond said position corresponding to a zero count.
  • a signaling lever is movable between a signaling position and a non-signaling position. Biasing means resiliently urge said signaling lever to said non-signaling position.
  • a signal generator is under control of said lever and arranged to generate a signal when, and only when, said lever is in said signaling position.
  • Cam means are connected to said pinion for rotation therewith and in direct engagement with said lever and arranged to permit said lever to assume its non-signaling position when said pinion is in a position other than its signaling position and to move said lever to its signaling position in response to a rotation of said pinion to its signaling position.
  • the cut-off pinion tates the cut-off pinion during the subtracting movement of the high order position wheel. from zero to nine. In this operation, only small torques can be overcome so that this rotational movement can be used only to release pawls.
  • Two different arrangements and modes of operation of these pawls are known.
  • the pawl is spring-biased by the cutoff lever and bears on the pinion at its addendum circle I whereas the pawl is released as the pinion rotates.
  • the cut-off pinion has four teeth so that a rotation through 90 will result in a release and reengagement of the pawl. To provide this four-tooth design, four of the eight existing teeth are milled off in the range of the pawl.
  • the cut-off pinion is similarly designed and the pawl protrudes into the gaps between the teeth of the cut-off pinion so that a cut-off rotation of the cut-off pinion will lift off the pawl to release the cut-off lever.
  • the spring-loaded cut-off lever is set and then locked by the pawl when the counter is reset to zero.
  • the presettable counting mechanism for subtracting counters which mechanism comprises a cut-off pinion which is associated with the high order position wheel and adapted to generate a signal in response to a subtracting movement from the zero position
  • the cut-off pinion comprises one or more cams for directly operating a signaling lever, which is spring-biased and generates a signal, which is maintained until the counter is reset, and the number of cams on the cut-off pinion equals one-fourth of the number of teeth of each switching pinion.
  • the cut-off cam or cams operatively connected to the high order position wheel has or have together two stable positions relative to the signaling lever. These are the non-signaling position and the signaling position.
  • Each cut-off cam has a nose, which in the signaling position of the cam is adapted to enter a groove in the signaling lever and to engage a stop in the lever when the pinion is moved bodily away from. the high order position wheel.
  • the signaling lever is rotatably mounted on the digit wheel shaft and when pivotally moved out of its normal position initiates the generation of a signal by means of a switch finger, which for this purpose acts on a spring-biased push-button for controlling a switch.
  • the cut-off pinion shaft carrying the cut-off pinion is bodily movedv away from the high order position wheel. This causes the cam of the cut-off pinion to return to its initial position because the cam engages the groove in the signaling lever.
  • FIG. 1 shows the signaling mechanism in its initial position.
  • FIG. 2 shows the signaling mechanism in a position assumed in response to a rotation of the high order position wheel 1 from position 0 to position 9.
  • FIG. 3 illustrates how the resetting operation results in the elimination of the signal which has been continued after it has been initiated.
  • FIG. 4 shows the position assumed when the counter has been reset.
  • FIG. 5 is a top plan view showing the mechanism.
  • a high order position wheel 1 is rotatably mounted on a shaft 2 and provided with two switching teeth 3 and a rim 4.
  • the wheel I is shown in FIG. 1 in a positioncorresponding to the digit0.
  • the high order position wheel 1 is in mesh with a cutoff pinion 5, which is provided with a'diametral double cam 6 and by means of a shaft 7 is rotatably mounted in a bridge 8.
  • a signaling lever 9 is pivotally mounted on the shaft 2 and by-a spring loaded pushbutton ll of a switch 12 is resiliently urged against the double cam 6 and tends to move the latter to a horizontal position.
  • a nose 6a is associated with the double cam 6 of the cut-off pinion 5 and cooperates with the stopg'roove 9a of the signaling lever so as to impart a rotation to the cut-off pinion 5 during the outward pivotal movement of the cut-off pinion shaft 7.
  • FIG. 4 shows the position which will be assumed when the high order position wheel has been reset, for instance, to position 2 and the double cam 6 on the cut-off pinion 5 has returned to its initial position.
  • FIG. 5 shows the wheel 1, the shaft 2 on which the wheels 1 are mounted, and the signaling lever 9, as well as the cut-off pinion shaft 7, which is parallel to the shaft 2 and carries the cut-off pinion 5, cam 6 and nose 6a.
  • the shaft 7 also carries a nonnal carry pinion 13, which in known manner serves for the decimal carry from the next lower order position wheel 14 to the high order position wheel 1.
  • a presettable subtracting counter which comprises a digit wheel, which is adapted to be preset to a preset position corresponding to a count higher than zero and to perform a rotational subtracting movement from said preset position to and beyond a position corresponding to a zero count,
  • a cut-off pinion which is operatively connected to said digit wheel and arranged to rotate to a signaling position in response to a subtracting movement of said digit wheel beyond said position corresponding to a zero count
  • biasing means resiliently urging said signaling lever to saidsignaling position
  • a signal generator which is under control of said lever and arranged to generate a signal when, and only when, said lever is in said signaling position
  • cam means connected to said pinion for rotation therewith and in direct engagement with said lever and arranged to permit said lever to assume its nonsignaling position when said pinion is in a position other than its signaling position and to move said lever to its signaling position in response to a rota tion of said pinion to its signaling position.
  • a counter as set forth in claim 1' in which said digit wheel is a high order position digit wheel.
  • cam means comprise cams in a number which is equal to one-fourth of said numberof teeth.
  • cam means comprise a plurality of cams, each of which is engageable with said lever.
  • 0 asing means comprise a spring-loaded push-button operatively interposed between said lever and said signal generator.
  • said lever is provided with stop means facing said cam means
  • said cam means are arranged to engage said stop means when said pinion is in said signaling position and is moved to an inoperative position.
  • said cam means are arranged to rotate said pinion to the other of its stable'positions in response to a bodily movement of said'pinion to said inoperative position when said pinion is initially in said signaling position.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission Devices (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Mechanical Control Devices (AREA)
US00316287A 1972-07-22 1972-12-18 Presettable subtracting counter Expired - Lifetime US3786240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722236098 DE2236098C3 (de) 1972-07-22 Vorwahlzähler mit Zahlenrollen und Signalgabe bei erreichter Endstellung

Publications (1)

Publication Number Publication Date
US3786240A true US3786240A (en) 1974-01-15

Family

ID=5851419

Family Applications (1)

Application Number Title Priority Date Filing Date
US00316287A Expired - Lifetime US3786240A (en) 1972-07-22 1972-12-18 Presettable subtracting counter

Country Status (5)

Country Link
US (1) US3786240A (de)
JP (1) JPS5522833B2 (de)
CH (1) CH563041A5 (de)
GB (1) GB1398813A (de)
IT (1) IT973165B (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479482A (en) * 1944-03-15 1949-08-16 Soag Machinery Company Counting mechanism
US2900133A (en) * 1956-11-19 1959-08-18 William H Durand Selectively positioned electrical control for computing registers
US3231190A (en) * 1963-02-15 1966-01-25 Itt Preset or predetermined type counter
US3343789A (en) * 1966-11-16 1967-09-26 Jr Nathaniel B Wales Predetermining counter switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479482A (en) * 1944-03-15 1949-08-16 Soag Machinery Company Counting mechanism
US2900133A (en) * 1956-11-19 1959-08-18 William H Durand Selectively positioned electrical control for computing registers
US3231190A (en) * 1963-02-15 1966-01-25 Itt Preset or predetermined type counter
US3343789A (en) * 1966-11-16 1967-09-26 Jr Nathaniel B Wales Predetermining counter switch

Also Published As

Publication number Publication date
GB1398813A (en) 1975-06-25
JPS5522833B2 (de) 1980-06-19
JPS4953367A (de) 1974-05-23
DE2236098A1 (de) 1974-02-07
IT973165B (it) 1974-06-10
CH563041A5 (de) 1975-06-13
DE2236098B2 (de) 1975-11-20

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