US3178111A - Counting mechanisms - Google Patents

Counting mechanisms Download PDF

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Publication number
US3178111A
US3178111A US300028A US30002863A US3178111A US 3178111 A US3178111 A US 3178111A US 300028 A US300028 A US 300028A US 30002863 A US30002863 A US 30002863A US 3178111 A US3178111 A US 3178111A
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United States
Prior art keywords
shaft
resetting
pinions
rolls
cams
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Expired - Lifetime
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US300028A
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English (en)
Inventor
Auer Ulrich Wolfgang
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Societe des Compteurs de Geneve SODECO
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Societe des Compteurs de Geneve SODECO
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/28—Design features of general application for zeroising or setting to a particular value
    • G06M1/30—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers
    • G06M1/303—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers with drums

Definitions

  • This invention relates to a re-setting device for the counters of a counting mechanism Comprising 1a re-setting heart, a lever arrangement actuating the re-setting heart as well as connecting pinions capable of being disengaged and freely rotatable on a shaft.
  • Such re-setting devices are already known. They operate in the following manner: during the resetting movement first the pinions meshing in the gear wheels of the individual counters are brought out of engagement with the said gear wheels and then resetting members are pressed against the re-setting hearts, whereby the counters are turned back to the Zero position.
  • Known re-setting devices of this type operate with a connecting pinion bridge, which carries a shaft for the pinions and is capable of swinging about a pivot, so that the pinions come out of engagement with the gear wheels of the counters. Coupled with the movement of this pinion bridge are the re-setting members adapted to swing about separate pivots and co-operating with the re-setting heart. These re-setting members usually consist of spring-driven re-setting grippers or even of re-setting hammers. All these known devices have in common the fact that they consist of several structural parts movable relatively to one another and kinematically coupled in a rather complicated manner. Besides the shaft for the pinions at least two more rotatable shafts are necessary, namely firstly the swinging axle for the pinion bridge and secondly the pivots for the re-setting members.
  • the object of the invention has been to provide a simple re-setting device which can be manufactured and assembled without high precision requirements and at the same time needs only a small space and is therefore especially suitable for miniature counters and in which, moreover, care is taken to ensure that the counters or cipher rolls are not freely rotatable at any stage during the resetting operation.
  • the invention is characterized by the feature that the shaft for the connecting pinions forms the pivot for the lever arrangement connected therewith and is mounted at 3,178,1ll Patented Apr. 13, 1965 each end in an oblong hole in the casing wall of the casing wall of the counting mechanism in such a manner that it is pressed by spring means in the direction of the cipher rolls, the connecting pinions meshing in the gear wheels of the counters, whilst on actuation of the lever arrangement for re-setting, the connecting pinions are brought out of engagement with the gear wheels through displacement of the shaft in the oblong holes against the action of the spring means.
  • FIGURE 1 is a view of one narrow side of one embodiment of the re-setting device in the engaged position of the connecting pinions.
  • FIGURE 1a shows diagrammatically the forces acting on the lever arrangement.
  • FIGURE 2 is a view according to FIGURE 1 in the position occupied by the re-setting device after the first part of the actuating movement.
  • FIGURE 3 shows the position occupied by the resetting device after continuation of the actuating move ment during the re-setting of the counters.
  • FIGURE 4 is a view of the broad side of the embodiment according to FIGURES 1 to 3.
  • the re-setting device as shown in FIGURES 1 to 4 belongs to a counting mechanism of known design not shown in detail, which has, as shown in FIGURE 4, four, for example, counters or cipher rolls 23, 24, 25 and 26 arranged on the shaft 27, the said rolls indicating four decimal positions.
  • the re-setting device comprises the lever arrangement I with the four lever arms 2, 3, 4, and 5 as well as the two power arms 6 and 7. All the lever arms are connected as shown in FIGURE 4- by a web 36.
  • the lever arrangement 1 is mounted on the shaft 8, on which the connecting pinions 9, ill and 11, 12 are rot table in a freely movable manner.
  • the ends of the shaft 8 are mounted in the two oblong holes 15 and is in the lateral casing wall parts 13 and 14.
  • the shaft 8 In the position shown in PEGURE 1, the shaft 8 is pressed by the springs 17 and 18 (FIGURE 4) acting on the points 1a of the power arms against the upper edge of the oblong holes, the springs being secured to the casing at the points 30.
  • the connecting pinions 9, It) In this position of the shaft the connecting pinions 9, It), 11 and 12 are in engagement with the corresponding gear wheels 19, 2t 21 and 22 of the counters or cipher rolls 23, 24, 25 and 26, so that counting mechanism can be moved on in steps in a known manner by a driving mechanism not shown.
  • the cipher rolls are provided with known re-setting hearts 31, 32, 33 and 34.
  • FIGURE 1a serves to illustrate the forces acting on the lever arrangement.
  • the springs 17 and 18 are, for a reason to be explained later, arranged obliquely so as to exert a force on the power arm 6 and 7 in the direction of the arrow P
  • the ratio l /l of the lever lengths must be made as high as possible.
  • reaction force F (FIGURE la) set up during the resetting described at the bearing points of the lever arm ends on the re-setting hearts would cause an undesirably high bearing friction of the shaft 8, if this force P were not extensively compensated by the spring force F exerted in the approximately opposite direction. For this reason the oblique position of the springs has been selected.
  • the advantage of this release of stress on the bearing during the actual re-setting movement over weighs the disadvatnage caused by the unnecessary bearing force component F during the initial rotation of the shaft.
  • This course of movement is, exactly like the force of movement during the actuation movement, is important, because it ensures that the cipher rolls are not freely rotatable at any time and cannot carry out uncontrolled movements.
  • the pinions are either always in engagement with the gear Wheels or the lever arm ends press against the resetting hearts.
  • the springs 17 and 18 are arranged not perpendicularly to the shaft 3 but are inclined so that the lever arrangement is pressed against one bearing side and is thus held in a definite axial position. This prevents the lever altering the position of the pinions 9 to 112 through play. It is also sufficient to make only one spring inclined.
  • the whole lever arrangement I may consist of a single structural part which merely has to be secured on the shaft 8.
  • the shaft 8 for the pinions, the operating pin 35 and the springs 17 and I8 no other structural parts, mounts and rotating shafts are necessary, the whole re-setting device can be manufactured and mounted cheaply and takes up practically no extra room and is in any case required for the cipher rolls and the pinions.
  • arms of the lever arrangement and the operating pin do not have to be designed as shown dia- An intermediate position during this re- A grammatically in FIGURES 1 to 3, but many variations allowing a re-setting according to the invention to be obtained are conceivable.
  • a re-setting electromagnet can also be used for the actuation.
  • a resetting mechanism for a counter including a first shaft and a plurality of toothed counter rolls coaxially rotatable on said shaft, said resetting mechanism comprising a heart-shaped resetting cam rigid with each said counter roll, a second shaft parallel to said first shaft, a plurality of pinions on said second shaft positioned to mesh respectively with said toothed counter rolls, means movably supporting said second shaft for guided movement toward and away from said first shaft between an operative position in which said pinions mesh respectively with said toothed counter rolls and a resetting position in which said pinions are disengaged from said toothed counter rolls, means biasing said second shaft toward said operative position, a plurality of levers fulcrumed on said second shaft and having lever arms positioned to engage said heart-shaped resetting cams and actuating means for simultaneously rocking said levers about the axis of said second shaft to bring said lever arms into engagement with said heart-shaped resetting cams and thereafter by continued movement of said levers to move said second shaft to
  • a resetting mechanism for a counter including a first shaft and a plurality of toothed counter rolls coaxially rotatable on said shaft, said resetting mechanism comprising a heart-shaped resetting cam rigid with each said counter roll, a second shaft parallel to said first shaft, a plurality of pinions on said second shaft position to mesh respectively with said toothed counter rolls, means movably supporting said second shaft for guided movement toward and away from said first shaft between an operative position in which said pinions mesh respectively with said toothed counter rolls and a resetting position in which said pinions are disengaged from said toothed counter rolls, spring means biasing said second shaft to operative position, a plurality of levers fulcrumed on said second shaft and having first lever arms positioned to engage said resetting cams and a second lever arm extending to the opposite side of said second shaft, and an actuating pin extending in a direction approximately parallel to the direction of movement of said second shaft and adapted to depress said second lever arm to rock said levers about
  • a resetting mechanism for a counter including a first shaft and a plurality of toothed counter rolls coaxially rotatable on said shaft, said resetting mechanism comprising a heart-shaped resetting cam rigid with each said counter roll, a second shaft parallel to said first shaft, a plurality of pinions on said second shaft positioned to mesh respectively with said toothed counter rolls, slotted bearings movably supporting said second shaft for guided movement toward and away from said first shaft between an operative position in which said pinions mesh with said toothed counter rolls and a resetting position in which said pinions are disengaged from said toothed counter rolls, lever means fulcrumedon said second shaft and comprising a plurality of incurved lever arms having end portions engageable with said resetting cams respectively and at least one actuating arm, an actuating pin engageable with said actuating arm at a point spaced from said second shaft to swing said lever means about the axis of said second shaft in a direction to move said incurved arms toward said
  • a resetting mechanism for a counter including a first shaft and a plurality of toothed counter rolls c0- axially rotatable on said shaft, said resetting mechanism comprising a heart-shaped resetting cam rigid with each said counter roll, a second shaft parallel to said first shaft, a plurality of pinions on said second shaft positioned to mesh respectively with said toothed counter rolls, means movably supporting said second shaft for guided movement toward and away from said first shaft between an operative position in Which said pinions mesh respectively with said toothed counter rolls and a resetting position in which said pinions are disengaged from said toothed counter rolls, means biasing said shaft toward said operative position, lever means fulcrumed on said second shaft and comprising a Web extending parallel to said second shaft and a plurality of lever arms rigid with said web and extending in planes perpendicular to said second shaft, said lever arms being positioned to engage respectively said resetting cams and actuating means acting on said lever means to rock said lever arms about the

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US300028A 1962-08-24 1963-08-05 Counting mechanisms Expired - Lifetime US3178111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1009662A CH399022A (de) 1962-08-24 1962-08-24 Rückstellvorrichtung für die Ziffernrollen eines Zählwerkes

Publications (1)

Publication Number Publication Date
US3178111A true US3178111A (en) 1965-04-13

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US300028A Expired - Lifetime US3178111A (en) 1962-08-24 1963-08-05 Counting mechanisms

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US (1) US3178111A (da)
AT (1) AT242411B (da)
CH (1) CH399022A (da)
DK (1) DK108272C (da)
GB (1) GB992090A (da)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321134A (en) * 1965-06-04 1967-05-23 Bowmar Instrument Corp Gear train resetting mechanism
US3447744A (en) * 1966-07-30 1969-06-03 J K G Hengstler Zahlerfabrik Setting device for key-operated presettable counters
US3451620A (en) * 1967-01-21 1969-06-24 Hengstler Kg Setting device for presettable counters having actuating keys
US3531047A (en) * 1968-02-08 1970-09-29 Hengstler Kg Reset device for counters
US3556398A (en) * 1969-03-27 1971-01-19 Edward C Walsh Hand held adding machine
US3711684A (en) * 1970-05-15 1973-01-16 Elmeg Resetting device for the digital rolls of counters
US3864553A (en) * 1972-01-24 1975-02-04 Elmeg Resetting device for counter drums
US3912911A (en) * 1973-01-22 1975-10-14 Elmeg Reset device for digit drums and counters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356607A (en) * 1916-09-13 1920-10-26 Western Electric Co Counting apparatus
US2034825A (en) * 1932-05-17 1936-03-24 American Telephone & Telegraph Metering assembly
US2992775A (en) * 1956-08-08 1961-07-18 Sodeco Compteurs De Geneve Instrument for totalizing telephone fees through pulses at a rhythm of 16 kilocycles
GB881200A (en) * 1960-04-01 1961-11-01 English Numbering Machines Improvements in or relating to counting mechanisms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1356607A (en) * 1916-09-13 1920-10-26 Western Electric Co Counting apparatus
US2034825A (en) * 1932-05-17 1936-03-24 American Telephone & Telegraph Metering assembly
US2992775A (en) * 1956-08-08 1961-07-18 Sodeco Compteurs De Geneve Instrument for totalizing telephone fees through pulses at a rhythm of 16 kilocycles
GB881200A (en) * 1960-04-01 1961-11-01 English Numbering Machines Improvements in or relating to counting mechanisms

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321134A (en) * 1965-06-04 1967-05-23 Bowmar Instrument Corp Gear train resetting mechanism
US3447744A (en) * 1966-07-30 1969-06-03 J K G Hengstler Zahlerfabrik Setting device for key-operated presettable counters
US3451620A (en) * 1967-01-21 1969-06-24 Hengstler Kg Setting device for presettable counters having actuating keys
US3531047A (en) * 1968-02-08 1970-09-29 Hengstler Kg Reset device for counters
US3556398A (en) * 1969-03-27 1971-01-19 Edward C Walsh Hand held adding machine
US3711684A (en) * 1970-05-15 1973-01-16 Elmeg Resetting device for the digital rolls of counters
US3864553A (en) * 1972-01-24 1975-02-04 Elmeg Resetting device for counter drums
US3912911A (en) * 1973-01-22 1975-10-14 Elmeg Reset device for digit drums and counters

Also Published As

Publication number Publication date
CH399022A (de) 1966-03-31
GB992090A (en) 1965-05-12
AT242411B (de) 1965-09-10
DK108272C (da) 1967-10-30

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