US3491611A - Arrangement with respect to the decimal register transfer in counter devices - Google Patents

Arrangement with respect to the decimal register transfer in counter devices Download PDF

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Publication number
US3491611A
US3491611A US755096A US3491611DA US3491611A US 3491611 A US3491611 A US 3491611A US 755096 A US755096 A US 755096A US 3491611D A US3491611D A US 3491611DA US 3491611 A US3491611 A US 3491611A
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United States
Prior art keywords
digit
wheel
gear ring
gear
transfer
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Expired - Lifetime
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US755096A
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English (en)
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Ake Eugen Murvall
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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
    • G06M1/14—Design features of general application for transferring a condition from one stage to a higher stage
    • G06M1/16—Design features of general application for transferring a condition from one stage to a higher stage self-operating, e.g. by Geneva mechanism
    • G06M1/163—Design features of general application for transferring a condition from one stage to a higher stage self-operating, e.g. by Geneva mechanism with drums
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/14—Design features of general application for transferring a condition from one stage to a higher stage
    • G06M1/16—Design features of general application for transferring a condition from one stage to a higher stage self-operating, e.g. by Geneva mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19623—Backlash take-up
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19874—Mutilated

Definitions

  • the present invention relates to an arrangement with respect to the decimal register transfer in counter devices of the type provided. with marker wheels, as coaxially journalled digit rolls or interspaced digit discs journalled in lateral array, whereby a transfer wheel on a separate shaft is placed between each pair of adjacent marker wheels and provided with two gear rings having the same number of teeth, one gear of which being of the Maltese cross type and meshing with a marker wheel of immediately lower order and the other gear meshing with a marker wheel of immediately higher order.
  • the rotating movement thus will be less and less the more wheels used and this results in the digits of the different wheels not arriving in exact alignment relative to each other when the transfer movement occurs, the error in the alignment becoming greater and greater the more digit wheels that are used.
  • Said error has a troublesome effect on the wheels, which are to be moved, or already have been moved, by the transfer wheel, in other words, when a preceding digit wheel stands on a 9 or 0 digit.
  • This inconvenience is eliminated by the present invention, which is characterized by the driving gear ring of the transfer wheel having a larger pitch diameter than the driven gear ring so that a gearing up effect is obtained between the respective pairs of marker wheels in order to make possible a compensation of the play between intermeshing gear rings.
  • FIG. 1 shows the design used in the prior art for the transfer operation between two digit discs
  • FIG. 2 shows the manner in which the transfer operation is carried out between two digit discs according to the present invention
  • FIG. 3 shows in axial cross section along line III--III of FIG. 4 the transfer operation with external gearing of coaxially journalled digit rolls
  • FIG. 4 shows the same arrangement as is illustrated in cross section in FIG. 3 along a plane through the centre axis
  • FIG. 5 shows in cross sectional view along line V--V in FIG. 6 the transfer arrangement with internal gearing of coaxially journalled digit rolls
  • FIG. 6 shows the same arrangement as in FIG. 5 in a cross sectional along a plane through the centre of the longitudinal axis of the roll.
  • digit disc 1 is a rotating single digit series disc carrying digits 0-9 and in its periphery being provided with a gear space 2.
  • transfer wheel 3 In adjacent arrangement to digit disc 1 transfer wheel 3 is journalled, said wheel being provided with two coaxial gear rings 4 and 5 respectively of the same diametrical pitch and in this particular case each one being provided with 4 teeth.
  • Gear ring 4 is intended to mesh with gear space 2 of digit wheel 1 and therefore has been given the Maltese cross design, i.e. every second tooth is sliced off so that it will have about half the width or thickness of a full tooth.
  • the other gear ring 5 meshes with a gear ring 6 of the juxtapositioned ten series digit disc 7, representing the digit series of the first digit of a two digit number, said digit disc 1 occupying the position in which it shows digit '0 having been rotated from the position wherein it showed digit 9.
  • digit disc 1 During the movement from 9 to 0 position digit disc 1 by means of its gear space 2 has rotated transfer wheel 3 and the latter one in its turn by means of its gear ring 5 has rotated the ten series digit wheel 7 a distance corresponding one digit.
  • Digit disc 7 should have rotated 36 but because of the inevitable play between the gears, the movement will be less. The loss in the movement will be greater and greater the more digit discs having been used.
  • the object of the present invention is, irrespective of their position, to obtain the same good alignment of the digit discs as when in the prior art all digit discs were in positions showing digits 18.
  • This object according to the invention has been obtained in a very simple and efficient manner as can be seen in FIG. 2.
  • Transfer wheel 3 has the same number of teeth on the driven gear ring 4, as well as on the driving gear ring 5, but the pitch diameter of the driving gear ring 5 is greater than that of the driven gear ring 4.
  • the driven gear ring 4 is illustrated as having a 30% smaller pitch diameter than that of driving gear ring in which case, if the pitch diameter of digit disc 1 is 22.4 mm., the pitch diameter of gear ring 4 is 5.6 mm., the pitch diameter of gear ring 5 is 8 mm. and finally, the pitch diameter of digit wheel 7 is 20 mm., the total gear ratio will be 1.6:1.
  • FIGS. 3 and 4 the same principle is illustrated as'in FIG. 2, but with one exception, viz, coaxially journalled digit drums with peripherally arranged digits being used.
  • the same reference numbers are given to identical parts appearing in both figures.
  • the size of the driven gear ring 4 in the embodiment according to FIGS. 3 and 4 is 30% smaller than that of driving gear ring 5.
  • the gear ratio also in this case will be 1.621 between digit drum 1 and digit drum 7, and, as is evident from FIG. 3, the same good alignment is obtained for digit drum 7 as in the preceding embodiment.
  • FIGS. 5 and 6 the same design principle is illustrated as in FIGS. 3 and 4 but with one exception, viz, the digit drums 1 and 7 being provided with internal 9 gears, the transfer wheel 3 being placed inside the drums.
  • the driven gear ring 4 has a 30% smaller pitch diameter than the driving gear ring 5.
  • the gear ratio Will not be as high as in the preceding embodiments. The difference is due to the circumstance that a reduction of the size of gear ring 4 requires a reduction of the pitch diameter of digit drum 1.
  • the reduction of thepitch diameter of digit drum 1 will be percentagewise smaller than that of gear ring 4.
  • a gearing up effect is still obtained between digit drum 1 and digit drum 7.
  • digit drum 1 has a pitch diameter of 18.2 mm.
  • the driven gear ring 4 a pitch diameter of 4.2 mm. and the pitch diameters of driving gear ring 5 and digit drum 7 being 6 mm. and 20 mm. respectively, a gear ratio of 1.3:1 is obtained.
  • a better alignment is obtained for digit drum 7 than in designs of the prior art having a gear ratio of 1:1.
  • the invention is not limited to the embodiments described above and illustrated in the drawing, but can be varied as to embodiment and details within the scope of the idea of the invention.
  • the present invention is not limited to decimal register transfer only, but can with equally good result be applied in arrangements of the transfer of series of 12 unit numbers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Gears, Cams (AREA)
US755096A 1967-09-15 1968-08-26 Arrangement with respect to the decimal register transfer in counter devices Expired - Lifetime US3491611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12763/67A SE302699B (enrdf_load_stackoverflow) 1967-09-15 1967-09-15

Publications (1)

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US3491611A true US3491611A (en) 1970-01-27

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US755096A Expired - Lifetime US3491611A (en) 1967-09-15 1968-08-26 Arrangement with respect to the decimal register transfer in counter devices

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US (1) US3491611A (enrdf_load_stackoverflow)
FR (1) FR1581343A (enrdf_load_stackoverflow)
SE (1) SE302699B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH615737A5 (enrdf_load_stackoverflow) * 1975-09-16 1980-02-15 Elmeg

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679357A (en) * 1951-07-12 1954-05-25 Westinghouse Electric Corp Meter register
US3107855A (en) * 1960-04-27 1963-10-22 Floyd E Miner Odometer mechanism
US3438278A (en) * 1967-03-20 1969-04-15 Messrs Feinwerkbau Westinger & Gear units for counters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679357A (en) * 1951-07-12 1954-05-25 Westinghouse Electric Corp Meter register
US3107855A (en) * 1960-04-27 1963-10-22 Floyd E Miner Odometer mechanism
US3438278A (en) * 1967-03-20 1969-04-15 Messrs Feinwerkbau Westinger & Gear units for counters

Also Published As

Publication number Publication date
FR1581343A (enrdf_load_stackoverflow) 1969-09-12
SE302699B (enrdf_load_stackoverflow) 1968-07-29

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