US3777973A - Zero setting roller counting mechanism - Google Patents

Zero setting roller counting mechanism Download PDF

Info

Publication number
US3777973A
US3777973A US00335137A US3777973DA US3777973A US 3777973 A US3777973 A US 3777973A US 00335137 A US00335137 A US 00335137A US 3777973D A US3777973D A US 3777973DA US 3777973 A US3777973 A US 3777973A
Authority
US
United States
Prior art keywords
counting
zero setting
shaft
pinions
resetting
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
US00335137A
Other languages
English (en)
Inventor
H Kundisch
W Pfundstein
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.)
Irion and Vosseler Zaehlerfabrik GmbH and Co
Original Assignee
Irion and Vosseler Zaehlerfabrik GmbH and Co
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 Irion and Vosseler Zaehlerfabrik GmbH and Co filed Critical Irion and Vosseler Zaehlerfabrik GmbH and Co
Application granted granted Critical
Publication of US3777973A publication Critical patent/US3777973A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/28—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

  • ABSTRACT The mechanism includes a counter frame and a plurality of toothed counting wheels rotatably mounted on a common shaft and each having a respective heartshape resetting cam fixed thereto.
  • the cams are actuable by respective zero setting fingers of a zero setting rake operable, against spring bias, by a resetting slide shiftable in the counter frame transversely of the counting wheel shaft.
  • a plurality of counting wheel stepping pinions are mounted on a common shaft which is displaceable radially of the counting wheels. During zero setting of the counting wheels, the pinions are disengaged therefrom and are maintained in their respective angular orientations by fixed elastic tongues.
  • the resetting slide includes a plate having a width substantially equal to the axial length of the counting wheel set, and the zero setting fingers are arranged in fixed positions on this plate.
  • the plate has wall portions extending from its opposite longitudinal edges and mounting the common shaft of the pinions in parallel with the common shaft for the counting wheels.
  • the common pinion shaft is mounted in elongated slots so as to be shiftable relative to the slide against frictional resistance produced by spring pressure.
  • Releasable detent means are provided to latch the slide in a position in which the pinions are engaged with the respective counting wheels.
  • This invention relates to a zero setting roller counting mechanism including heart-shape resetting cams each connected to a respective counting wheel and which, for resetting, are actuated by zero setting fingers on a zero setting rake operable, against spring bias, by a resetting slide which can be shifted within a counter frame transversely to the common axis of the counting wheels.
  • the counting mechanism further includes stepping pinions mounted on a common shaft displaceable radially relative to the counting wheels and which pinions, during zero setting of the counting wheels, are disengaged therefrom and maintained in their respective angular orientations by means of fixed elastic tongues.
  • Zero setting roller counting mechanisms of this type are known.
  • German provisionally published application No. 2,136,712 discloses a zero setting roller counting mechanism in which the resetting slide consists of a plate which is mounted in the counter frame below the counting wheels so as to be shiftable, and which, in its rest position, projects from the front side of the counter frame and may be pushed manually into the counter frame through a certain distance.
  • the stepping pinions are freely rotatable on a shaft which is mounted so as to be displaceable in slots provided in the side walls of the counter frame, and these slots extend radially relative to the stepping pinons.
  • the displacement of the shaft in the slots of the side walls of the frame is effected by lateral sliding guides provided for the resetting plate, which has guiding surfaces which are oblique to its direction of displacement.
  • the elastic tongues serving to maintain the stepping pinions against rotation during the zero setting operation, are also arranged on the bow having the resetting fingers, so that the stepping pinions, owing to their radial displacement with respect to the counting wheels, come into contact with the elastic tongues as soon as they are disengaged from the teeth of the respective counting wheels.
  • the zero setting fingers, the elastic tongues, the bow, and the forked claws are made of synthetic material and in one piece, and so is the resetting plate with its slide guides and the operating cam.
  • the resetting part comprises a slider mounted in a side wall of the counter frame and actuating, on the one hand, by means of a cam, a resetting rake and, on the other hand, a bridge for shifting the pinion shaft in the respective seating slots therefor.
  • the elastic tongues, for maintaining the stepping pinions against rotation, are secured to a web of the counter frame.
  • roller counting mechanisms are manufactured, and also needed, in large quantities, the important requirement to be met, aside from the basic demand for relaibility in service, is to reduce the manufacturing costs as much as possible. It is for this reason that, for some time, many parts of roller counting mechanisms have been made of synthetic materials, by injection molding, and the number of component parts has been reduced to a minimum. However, and in spite of these steps, in known counting mechanisms, the desired cost reduction has not been capable of being obtained because of the still too high labor costs for assembly.
  • This invention is directed to the problem of providing a zero setting roller counting mechanism of the type mentioned above and which, while meeting all requirements as to its reliability in operation, can be manufactured at a substantially less expensive than known roller counting mechanisms.
  • this problem is solved by providing a resetting slide in the form of a plate extending throughout the axial distance of the counting wheels set, and zero setting fingers are arranged in a fixed position on this plate. Both longitudinal edges of the plate have wall portions in which the shaft of the stepping pinions is mounted parallel to the shaft rotatably supporting the counting wheels.
  • the time necessary to assemble the counting mechanisms is substantially reduced because the stepping pinions may be mounted on their shaft, and the shaft may be placed in its seats, outside the counter frame. Additionally, the zero setting fingers, as they are an integral part of the resetting slide, need not be mounted separately and are introduced into the frame along with the resetting slide. Even if it were necessary to manufacture the zero setting fingers, in a known manner, in the form of a separate comb-shape part to be secured to the plate or resetting slide, for example, by means of screws or rivets, the assembly time would still be considerably more favorable than with known counting mechanisms.
  • the slide in one piece with the lateral wall portions and the zero setting fingers, and preferably of synthetic material, because, when this is done, the time for securing the fingers to the slide is saved and the whole assembly operation consists merely in loosely inserting the resetting slide into the counter frame and mounting the shaft for the counting wheels in the frame.
  • the pinion shaft is mounted in slots in the wall portions, so as to be shiftable, against the friction produced by a spring pressure, with the resulting advantage that, as compared to the distance covered by the resetting slide having the zero setting fingers, the stepping pinions are shifted through a distance which is shorter, by the length of the slots receiving the pinion shaft, and that, in each case, the stepping pinions are moved immediately when the resetting slide starts to move. Consequently, the stepping pinions are positively disengaged from the teeth of the counting wheels before the zero setting fingers engage the heart-shape resetting cams of the counting wheels. At the return of the resetting slide into its rest position, the stepping pinions are reengaged with the respective counting wheels before the zero setting fingers disengage from the heart-shape resetting cams.
  • An object of the invention is to provide an improved zero setting roller counting mechanism.
  • Another object of the invention is to provide such a zero setting roller counting mechanism in which the assembly expense is very substantially reduced.
  • a further object of the invention is to provide such a zero setting roller counting mechanism which operates reliably in practice.
  • Another object of the invention is to provide such a zero setting roller counting mechanism in which the resetting slide is integral with the zero setting fingers and supports a shaft mounting the stepping pinions whereby the resulting unitary assembly may be readily inserted into a counter frame.
  • FIG. 1 is an isometric view of a resetting slide of a roller counting mechanism in accordance with the invention
  • FIG. 2 is a partial front elevation view, partly in section, of the roller counting mechanism embodying the invention
  • FIG. 3 is a sectional view taken along the line IIIIII of FIG. 2;
  • FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3;
  • FIG. 5 is a sectional view taken along the line V ⁇ / of FIG. 3.
  • a roller counting mechanism embodying the invention comprises a counter frame structure 1 which is an integral piece of synethetic material and includes a bottom wall 2 as well as side walls 3 and 4 which are connected to each other, on the front side 5 of the counting mechanism, by an upper bar 6.
  • Counter frame 1 is open both at its front side 5 and at its top 7.
  • an electromagnet In the rear part of counter frame 1, which has not been shown in the drawings, an electromagnet is located and serves, in a known manner, to drive the counter by pulse sequences.
  • the armature of this electromagnet actuates a shifting fork, which has not been shown, which engages a star wheel of the first counting decade.
  • the roller counting mechanism includes counting wheels 9 each having affixed thereto a respective heartshape resetting cam 8, wheels 9, with their cams 8, being freely rotatably on a common counting wheel shaft 10 mounted in axially aligned bores 11 and 12 provided in the respective side walls 3 and 4.
  • the inner surfaces of side walls 3 and 4 are provided with respective recesses 13 and 14, each having a vertical front edge 15 and an oblique rear edge 16, both edges being tangential to the respective bore 11 and 12.
  • shaft 10 supports spacer sleeves l7 and 18.
  • a resetting slide 19 is supported on the bottom 2 of frame 1 between side walls 3 and 4, and is mounted so as to be shiftable along side walls 3 and 4 against the bias of a spring.
  • resetting slide 19 includes a plate 20 having, on its front side 21, a projection 22 and a row of vertically extending laterally spaced zero setting fingers 23 which are spaced laterally uniformly along front side 2l.
  • Plate 20 further includes lateral wall portions 24 and 25, each extending along a respective side edge of plate 20, and each being formed with respective horizontal slots 26 and 27 as well as with respective horizontal upper guide edges 28 and 29.
  • Slots 26 and 27 receive shaft 30 of the stepping pinions, and shaft 30 extends, on both sides, outwardly of the outer surfaces of the wall portions 24 and 25. At least one end of shaft 30 is flattened, and preferably both ends, to prevent rotation of shaft 30.
  • bar springs 32 are secured at one end to pins 31, with their opposite ends being bent in the shape of a hairpin whose upper arm 34 engages against the respective end of shaft 30 thereby to press the flattened end of shaft 30 against the upper edges 35 and 36, respectively, of slots 26 and 27.
  • the lower arm of the hairpin rests against a projection 37.
  • shaft 30 extend into guide recesses 38 and 39 formed on the inner surfaces of the respective side walls 3 and 4.
  • the bottom surfaces 40 and 41 of the respective recesses 38 and 39 serve to limit the axial movement of shafts 30, while the respective vertical front edges 42 and 43 thereof serve as a stop for shaft 30, thus preventing the loose stepping pinions 44, mounted on shaft 30, from being drawn, owing to the spring bias to which resetting slide 19 is subjected, too far into engagement with the counting wheels 9.
  • tongues 45 are provided at a certain distance from shaft 10 for the counting wheels, and are arranged in a row parallel to the axis of shaft 10 or to the axis of bores 11 and 12 of the respective side walls 3 and 4. Tongues 45 serve to maintain the stepping pinions 44 against rotation when the same are disengaged from counting wheels 9.
  • These tongues 45 are made of synthetic material and are integral with counter frame 1, so that no subsequent mounting or securing of the tongues is necessary.
  • the cross-sections of tongues 45 are of such dimensions that the tongues are sufficiently rigid and sufficiently elastic to be able to engage stepping pinions to prevent rotation of the pinions during the zero setting operation.
  • a stop notch 52 is formed in the bottom surface thereof, and a latch 53 of a stop spring is engaged in this notch when resetting slide 19 is in its rest position illustrated in FIG. 5.
  • the stop spring 54 and latch 53 are formed integrally with the bottom 2 of counter frame 1, and are surrounded by a U-shape opening 55 as shown in dotted lines in FIG. 3.
  • an auxiliary shaft is used for this purpose and the counting wheels, in the necessary number and succession, are mounted on this shaft.
  • the length of the auxiliary shaft is such as to just fit in the space provided by the two recesses 13 and 14 formed in the respective side walls 3 and 4 of counter frame 1. Together with counting wheels 9 and, perhaps, a blank roller, the two spacer sleeves 1'7 and 18 are also mounted on the auxiliary shaft before the final mounting of the whole set.
  • the auxiliary shaft is introduced into the recesses 13 and 14 from above so that, by virtue of the guide edges 15 and 16 of the recesses 13 and 14, which are tangential to the respective bearing bores 11 and 12, the auxiliary shaft is automatically axially aligned with bores 11 and 12. Thereafter, the auxiliary shaft is replaced by the true counting wheel shaft 10, whose length corresponds to the distance between the outer surfaces of side walls 3 and 4. This is effected by pushing shaft 10, from the outside, through one of the bores 11 and 12, which displaces the auxiliary shaft out through the other bore.
  • slide 19 is guided, in the vertical direction, on the one hand by bottom 2 of frame 1 and, on the other hand, by the horizontal guide edges 28 and 29 which slide on spacer sleeves 17 and 18 of shaft 10, as shown in FIG. 2.
  • a zero setting roller counting mechanism of the type including a counter frame, a plurality of toothed counting wheels rotatably mounted on a common counting wheel shaft and each having a respective heart-shape resetting cam fixed thereto, the cams, for resetting of the counting mechanism to zero, being actuable by respective zero setting fingers of a zero setting rake operable, against spring bias, by a resetting slide shiftable in the counter frame transversely of the common shaft of the counting wheels, and a plurality of counting wheel stepping pinions mounted on a common pinion shaft which is displaceable radially of the counting wheels, the stepping pinions, during zero setting of the counting wheels, being disengaged from the counting wheels and held against rotation by arresting elements: the improvement comprising, in combination, said resetting slide including a plate extending laterally through the axial length of the counting wheel set; said zero setting fingers being arranged in fixed positions on said plate; and wall portions extending from the opposite longitudinal edges of said plate and mounting said common pinion shaft
  • said counter frame comprises a bottom and side walls extending upwardly from the opposite lateral edges of said bottom; each of said side walls being formed with an upwardly opening recess in its inner surface; said common pinion shaft being guided in said recesses.
  • said counter frame includes a bottom and side walls extending upwardly from the lateral sides of said bottom; said side walls being formed with axially aligned bearing bores receiving said counting wheel shaft; the inner surfaces of said side walls being formed with upwardly opening guiding recesses extending from the upper edges of the side walls to said bearing bores.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Sewing Machines And Sewing (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US00335137A 1972-03-17 1973-02-23 Zero setting roller counting mechanism Expired - Lifetime US3777973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2212882A DE2212882C3 (de) 1972-03-17 1972-03-17 Nullstellbares Rollenzählwerk

Publications (1)

Publication Number Publication Date
US3777973A true US3777973A (en) 1973-12-11

Family

ID=5839177

Family Applications (1)

Application Number Title Priority Date Filing Date
US00335137A Expired - Lifetime US3777973A (en) 1972-03-17 1973-02-23 Zero setting roller counting mechanism

Country Status (4)

Country Link
US (1) US3777973A (enrdf_load_stackoverflow)
JP (1) JPS578507B2 (enrdf_load_stackoverflow)
DE (1) DE2212882C3 (enrdf_load_stackoverflow)
FR (1) FR2176691B1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864553A (en) * 1972-01-24 1975-02-04 Elmeg Resetting device for counter drums
US4096377A (en) * 1976-07-22 1978-06-20 California Injection Molding Co., Inc. Counter mechanism
US4197452A (en) * 1978-03-28 1980-04-08 Tamura Electric Works, Ltd. Counters reset to zero by push buttons

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136276A (en) * 1975-05-21 1976-11-25 Tadashi Yoshikawa Counter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US974006A (en) * 1909-04-01 1910-10-25 Alois Salcher Controlling apparatus.
US3529769A (en) * 1967-08-16 1970-09-22 English Numbering Machines Counting devices

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4418902Y1 (enrdf_load_stackoverflow) * 1966-07-11 1969-08-14
FR1532961A (fr) * 1967-07-28 1968-07-12 Veeder Industries Inc Compteur
US3580498A (en) * 1969-04-04 1971-05-25 Veeder Industries Inc Electromagnetic counting mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US974006A (en) * 1909-04-01 1910-10-25 Alois Salcher Controlling apparatus.
US3529769A (en) * 1967-08-16 1970-09-22 English Numbering Machines Counting devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864553A (en) * 1972-01-24 1975-02-04 Elmeg Resetting device for counter drums
US4096377A (en) * 1976-07-22 1978-06-20 California Injection Molding Co., Inc. Counter mechanism
US4197452A (en) * 1978-03-28 1980-04-08 Tamura Electric Works, Ltd. Counters reset to zero by push buttons

Also Published As

Publication number Publication date
FR2176691B1 (enrdf_load_stackoverflow) 1977-02-04
DE2212882C3 (de) 1975-11-20
DE2212882A1 (de) 1973-09-27
DE2212882B2 (de) 1975-04-10
FR2176691A1 (enrdf_load_stackoverflow) 1973-11-02
JPS4925858A (enrdf_load_stackoverflow) 1974-03-07
JPS578507B2 (enrdf_load_stackoverflow) 1982-02-17

Similar Documents

Publication Publication Date Title
US3777973A (en) Zero setting roller counting mechanism
US2641050A (en) Method of making rotary switch wipers
US4257283A (en) Stepping mechanism for a multi-position switch
US3648028A (en) Electromagnetic counter
US3529769A (en) Counting devices
US4096377A (en) Counter mechanism
US2705553A (en) Typewriter construction
US3677468A (en) Counter mechanism
US3329336A (en) Setting device to be operated by means of keys destined for an adding or cal- culating machine, a cash-register or such-like device
US3248051A (en) Heart cam resetting devices
US3006546A (en) Counter mechanism
US3302877A (en) Spring mounting for keys
US3985220A (en) Tabulator apparatus for a typewriter carriage moving in steps of different length
US4383453A (en) Stepping mechanism
US2824688A (en) Ten key actuator stop mechanism for calculating machines
US2312676A (en) Typewriting and like machine
US2765116A (en) Data storing apparatus for business machines, particularly accounting machines or the like
US2904248A (en) Differential mechanism for ten-key machines
US1046513A (en) Adding-machine.
US2698573A (en) Type magazine for business machines
KR920001440B1 (ko) 프린터
SU718002A3 (ru) Устройство дл выбора направлени вращени шрифтоносител пишущей машины
US3621777A (en) Type sector setting means in data printers
US1911515A (en) Now by judicial change op
US4405842A (en) Stepping mechanism for an encoding rotary switch