US3223316A - Counter wheel assembly - Google Patents

Counter wheel assembly Download PDF

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Publication number
US3223316A
US3223316A US365087A US36508764A US3223316A US 3223316 A US3223316 A US 3223316A US 365087 A US365087 A US 365087A US 36508764 A US36508764 A US 36508764A US 3223316 A US3223316 A US 3223316A
Authority
US
United States
Prior art keywords
tubular portion
reset
hub
gears
counter
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
US365087A
Other languages
English (en)
Inventor
Leland E Coulter
Edward C Ambler
Bradley L Batson
Norman R Behm
John J Anthony
Richard B Hamlin
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 Root 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 Root Inc filed Critical Veeder Root Inc
Priority to US365087A priority Critical patent/US3223316A/en
Priority to GB18311/65A priority patent/GB1070886A/en
Priority to NL6505703A priority patent/NL6505703A/xx
Priority to CH619065A priority patent/CH436797A/de
Application granted granted Critical
Publication of US3223316A publication Critical patent/US3223316A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G06M1/34—Design features of general application for zeroising or setting to a particular value using reset shafts
    • G06M1/343—Design features of general application for zeroising or setting to a particular value using reset shafts with drums
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/22—Design features of general application for visual indication of the result of count on counting mechanisms, e.g. by window with magnifying lens
    • G06M1/24—Drums; Dials; Pointers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/22—Design features of general application for visual indication of the result of count on counting mechanisms, e.g. by window with magnifying lens
    • G06M1/24—Drums; Dials; Pointers
    • G06M1/241—Drums

Definitions

  • the present invention relates generally to counter wheels -and more particularly to a counter wheel assembly of the type illustrated in United States Patent No. 2,932,448 granted to Harvey N.
  • the principal aim of the present invention is to provide an improved counter wheel assembly of the type described having an economical assembly of parts which may be individually manufactured by lmass production methods and readily combined into a compact and highly reliable and sturdy assembly.
  • Another aim of the present invention is to provide an improved counter wheel assembly having a minimum number of parts of light-weight construction.
  • a further vaim of the present invention is to provide an improved counter wheel assembly having drive and reset ears which are freely rotatable independently of the indicia wheel in accurate coaxial relationship therewith, and which may be smoothly engaged for common rotation with the indicia wheel.
  • Another aim of the present invention is to provide an improved counter wheel assembly of the type described having a simple and economical arrangement for engaging the reset gear which provides for accurate and smooth resetting of the indicia wheel and for timely engagement and disengagement of the reset gear and locking of the indicia wheel as it is rotated to its reset or zero position.
  • FIG. 1 is a view, partly broken away, of one end of an embodiment of a counter wheel assembly of the present invention
  • FIG. 2 is an axial section view of the counter wheel assembly taken substantially along line 2 2 of FIG. 1;
  • FIG. 3 is a view, partly broken away and partly in section, of the other end of the counter wheel assembly
  • FIG. 4 is an axial section view of a hub of the counter wheel assembly taken substantially along line 4 4 of FIG. 3, showing the hub in its manufactured form prior to assembly;
  • FIG. 5 is a fragmentary transverse section View showing a counter Wheel supporting shaft in cooperative engagement with a reset gear operating pawl of the counter wheel assembly;
  • FIG. 6 is a fragmentary transverse section view similar to FIG. 5 showing a prior art reset gear operating pawl
  • FIG. 7 is a section view, partly broken away, of a modified reset gear operating pawl of the counter wheel assembly.
  • the counter wheel assembly of the present invention is shown comprising a wheel hub 12 which is cast, preferably of Zinc, to provide a number of integrally formed parts including a central generally cylindrical boss or tubular portion 14 having an opening 16 for receiving a counter wheel reset shaft and an integral radial flange 18 having an inner portion 20 spaced axially inwardly from but adjacent to what will be termed for convenience as the higher order end 22 of the central tubular portion 14.
  • the flange 18 has an outer portion 24 which is offset yaxially outwardly from the inner flange portion 20 and which thereby forms with the inner flange portion 20 and the tubular portion 14 a generally annular recess 26 and which additionally forms with the inner flange portion 20 on the opposite face of the flange an axially tapered generally frustoconical edge 28.
  • the ange 18 is provided with a peripheral partially cylindrical shoulder 32 for engagement by the usual mutilated transfer pinion (not shown) for holding the transfer pinion against rotation and is additionally provided with a pair of teeth 34, 36 that are adapted to engage the mutilated transfer pinion for providing the transfer action to the next higher order wheel (not shown), it being understood that the counter Wheel assembly of the present invention has particular utility in counters of the type having a plurality of coaxial counter wheel assemblies arranged in ascending order.
  • An indicia bearing rim 40 of the counter wheel assembly preferably constructed of sheet metal aluminum, includes a generally cylindrical portion 42 that is suitably embellished with appropriate indicia, conventionally the numerals 0 through 9, and an inwardly extending radial flange portion 44 that is affixed to the flange 13 by a plurality of angularly spaced rivets 46 formed integrally with the hub flange for receipt within corresponding openings in the radial li-ange portion 44 and upset to rigidly secure the rim to the hub.
  • the central tubular portion 14 of the hub is provided with reduced ends 50, 52 for receiving and for axially locating a pair of sleeves or washers 54, 56, respectively.
  • the sleeves 54, 56 are retained against shoulders 58, 60 formed by the reduced ends by anging the edges of the tubular portion outwardly as by spinning, for which purpose the sleeves 54, 56 are outwardly tapered at 62, 64, respectively.
  • a molded plastic reset gear 70 is rotatably mounted at the higher order end of the counter wheel assembly on the sleeve 54 by an integrally formed axially offset radial flange 72 received in part within the annular recess 26 and retained against -axial outward movement by a radial annular shoulder or flange 74 on the sleeve 54.
  • the reset gear 70 further includes an integrally formed outwardly extending radi-a1 flange 76 with an inner annular face 78 that cooperates with a plurality of angularly spaced studs or bosses formed on the flange 18 for supporting the reset gear 70 against inward axial movement.
  • a drive gear of molded plastic construction is rotatably mounted on the tubular portion 14 at the opposite or lower order end thereof .and is provided with an inwardly facing annular bearing surface 92 having engagement with the coplanar end faces of the bosses or posts 94, 95, 96, 97 formed integrally with and axially extending from the flange 18 :and which thereby provide for supporting the gear against inward axial movement.
  • a radial annular shoulder or flange 99 on the sleeve 56 provides a bearing for supporting the drive gear against outward axial movement.
  • the sleeves 54, 56 which are preferably constructed of a good bearing material, therefore provide for restraining the gears against outward axial movement, and additionally are preferably positioned to provide end bearings for engagement with adjacent wheel assemblies.
  • the central tubular portion 14 of the hub 12 is provided with a pair of diametrically opposed slots 100, 102 extending from the higher order end 22 of the tubular portion to adjacent the drive gear 90.
  • a pair of diametrically opposed radially extending reset and drive gear pawls 104, 105, preferably of sintered metal construction, are slideably mounted in the opposed slots 100, 102 for operation by the wheel reset shaft and are pivotally mounted on the yhub about parallel transversely extending axes by pivot pins 106, 108, respectively, for which purpose the hub is cast to provide a pair of transersely spaced pockets for each of the pivot pins 106,
  • the pivot pin pockets are defined by shortened end walls 110, by inner side walls 112 that are coplanar with axially extending diametrically opposed flats 114, 116 formed on the tubular portion 14, and by tangs 120 which are cast to extend generally parallel to the side walls 112.
  • the pawls and pivot pins are therefore readily installed by positioning the pivot pins within the pockets and in engagement with the flats 114, 116 and by upsetting the tangs onto the pivot pins.
  • the posts 95, 96 are circumferentially spaced to define a radial slot for receiving the reset gear pawl 104 and are suitably contoured to define with a cylindrical recess 121 in the flange 18 a chamber for mounting a compression spring 130 that is operative to engage the reset gear pawl 104 to pivotally urge the pawl in the clockwise direction, as seen in FIG. 2.
  • a pair of partially circular webs 132, 134 are cast radially inwardly of the posts 95, 96, respectively, and with an axially extending opening 136 in the flange 13 provide a generally cylindrical recess for a sheet metal locking plunger 133. As best seen in FIG.
  • the plunger 138 is provided with a radial flange at its inner end which is received within a generally T-shaped slot 140 in the reset gear pawl 104. Accordingly, with the pawl 104 in its normal position, shown in FIG. 2, maintained by the compression spring 130, the plunger 138 is retracted and upon pivotal actuation of the reset gear pawl 104, in the counterclockwise direction as seen in FIG. 2, the plunger 138 is urged axially under the force of a compression spring 142 into engagement with the reset gear 70.
  • the reset gear is provided with a plurality of angularly spaced cylindrical recesses 146 that are adapted to receive the tapered end of the plunger 138 for securely connecting the reset gear with the indicia wheel. V l
  • a pair of partially cylindrical Webs 150, 152 are contoured to provide in conjunction with a generally cylindrical recess 154 in the flange 18 an axially extending chamber for a compression coil spring 156 adapted to urge the drive gear pawl 105, in the counterclockwise direction as seen in FIG. 2, into engagement with the ldrive gear 90.
  • the pawl 105 is provided with an outer tapered nose 158 that is adapted for receipt within radially extending slots 160 angularly spaced about the inner face of the drive gear 90.
  • the supporting shaft for the counter wheel assembly functions as a reset shaft for disengaging the drive gear and for engaging the reset gear for resetting. This is accomplished by axially shifting the reset shaft for pivotally displacing the reset and drive gear pawls outwardly from the reset shaft.
  • the reset shaft 170 is conventionally provided with an axially extending slot 172 for receiving the reset gear pawl 104 when the indicia wheel is located in its fully reset or zero position, whereupon the reset gear is disengaged and the indicia wheel is locked to the reset shaft.
  • the reset gear pawl 104 is contoured to provide a tapered edge 176 on the inner projection 178 of the pawl to prevent simultaneous engagement of the reset gear and locking of the indicia wheel.
  • the tapered edge 176 provides a circumferentially facing camming edge adapted for engagement with the edge 180 of the reset shaft (FIG. 5) to either move the pawl 104 out of the slot 172 when the indicia wheel and therefore the pawl 104 is being rotated by the reset gear, in the clockwise direction as seen in FIG. 5, or to move the indicia wheel in the countercloclcwise direction, under the force of the compression springs 130, 142 to its zero position whereupon the inner projection of the pawl 104 is fully received within the slot 172.
  • the reset gear pawl 104 would be formed with a cam circumferentially facing in the opposite angular direction.
  • a pawl 182 having a V-shaped projection 184 with tapered edges facing in both circumferential directions could be employed as a universal pawl for use with resetting in either rotational direction.
  • the parts of the counter wheel assembly of the present invention are capable of being manufactured by economical mass production methods and can be readily assembled into accurate association to provide a compact and highly reliable assembly.
  • the counter wheel assembly provides an economical arrangement for engaging and disengaging the reset gear which precludes the necessity of having, for example, a friction clutch in the reset gear drive and which nevertheless provides smooth resetting andy prevents simultaneous locking of the indicia wheel and engagement of the reset gear.
  • the counter wheel assembly of the present invention is of lightweight construction with a minimum number of parts arranged for reliable operation over a long service life.
  • a counter wheel assembly comprising a cast hub having a central axially extending tubular portion adapted for receiving a counter reset shaft and a radial flange portion spaced axially inwardly of but adjacent to one axial end of the tubular portion, a sheet metal rim secured to the flange portion having a generally cylindrical indicia bearing surface, the tubular portion of the hub having reduced axial ends, a pair of sleeves mounted on the reduced axial ends of the tubular portion, said sleeves being retained on the hub by outwardly flanged edges lof the tubular portion, a reset gear rotatably mounted at said one axial end of the tubular portion, a drive gear rotatably mounted at the other axial end of the tubular portion, said flange portion having a plurality of angularly spaced axially projecting bosses and said gears having axially facing annular bearing surfaces engageable by the bosses for supporting the gears against inward axial movement, said sleeves having radial shoulders for supporting the gears
  • a counter wheel assembly comprising a cast hub having a central axially extending tubular portion adapted for receiving a counter reset lshaft and a radial flange with an inner annular portion axially spaced inwardly 'of but adjacent to one axial end of the tubular portion and an outer annular portion offset laxially outwardly thereof to define an annulus with said one axial end of the tubular portion, a sheet metal ring having a generally cylindrical indicia bearing portion and an inward radial flange portion secured to the outer annular portion of the flange, a reset gear rotatably mounted at said one axial end of the tubular portion and in part within said annulus, a drive gear rotatably mounted at the other axial end of the tubular portion, a pair of sleeves mounted on the axial ends of the tubular portion retaining the gears against outward axial movement, said flange having a plurality of angularly spaced axially projecting bosses and said gears having axially
  • a counter wheel assembly comprising a cast hub having a generally cylindrical axially extending tubular portion adapted for receiving a counter reset shaft and a radial flange portion spaced axially inwardly of but adjacent to one axial end of the tubular portion, a sheet metal indicia bearing rim secured to the radial flange portion, a first sleeve mounted on said one axial end of the tubular portion, a second sleeve mounted on the other axial end of the tubular portion, said sleeves being retained on the hub by outwardly flanged edges of the tubular portion, a pair of molded plastic gears rotatably mounted at the opposite ends of the tubular portion, said flange having a plurality of angularly spaced axially projecting bosses and said gears having axially facing annular bearing surfaces engageable by the bosses for supporting the gears against inward axial movement, said sleeves having radial shoulders for supporting the gears against outward axial movement, said tubular portion having
  • a counter wheel assembly comprising a cast hub having a central axially extending tubular portion adapted for receiving a counter reset shaft and a radial flange portion spaced axially inwardly of but Iadjacent to one axial end of the tubular portion, a sheet metal indicia bearing rim secured to the radial flange portion, the tubular portion of the hub having reduced ends, a pair of sleeves mounted on the reduced end-s of the tubular portion, said sleeves being retained on the tubular portion by outwardly flanged edges thereof, a reset gear rotatably mounted at said one axial end of the tubular portion, a drive gear rotatably mounted at the other axial end of the tubular portion, said flange having a plurality of angularly spaced axially projecting bosses and said gears having axially facing annular bearing surfaces engageable by the bosses for supporting the gears against inward axial movement, said sleeves having radial shoulders for supporting the gears against outward axial movement
  • a counter wheel assembly comprising an indicia wheel having a cast hub with a generally cylindrical axially extending tubular portion adapted for receiving the counter reset shaft and a radial flange portion spaced axially inwardly of but adjacent to one axial end of the tubular portion, and an indicia bearing rim fixed to the flange portion, the tubular portion having reduced ends providing shoulders at the inner edges thereof, a pair of sleeves mounted on the reduced ends of the tubular portion in engagement with the shoulders, said sleeves being retained on the tubular portion by outwardly flanged edges thereof, molded plastic reset and drive gears rotatably mounted at the ends of the tubular portion respectively, said flange portion having a plurality of angularly spaced axially projecting bosses and said gears having axially facing annular bearing surfaces engageable by the bosses for supporting the gears against inward axial movement, said sleeves having radial shoulders for supporting the gears against outward axial
  • a counter wheel and counter shaft assembly comprising a counter shaft, and a counter wheel having a cast hub with a central axially extending tubular portion receiving the counter shaft and rotatably supporting the counter wheel thereon and a radial flange portion spaced axially inwardly of but adjacent to an axial end of the tubular portion, a rim on the flange portion having a generally cylindrical indicia bearing surface, the tubular portion of the hub having reduced axial ends, a pair of sleeves mounted on and affixed to the reduced axial ends of the tubular portion, an integrally formed reset gear rotatably mounted at one axial end of the tubular portion, a drive gear rotatably mounted at the other axial end of the tubular portion, said flange portion having a plurality of angularly spaced axially projecting bosses and said gears having axially facing annular bearing surfaces engageable by the bosses for supporting the gears against inward axial movement, said sleeves having radial shoulders for supporting the gears

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Gears, Cams (AREA)
  • Press Drives And Press Lines (AREA)
US365087A 1964-05-05 1964-05-05 Counter wheel assembly Expired - Lifetime US3223316A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US365087A US3223316A (en) 1964-05-05 1964-05-05 Counter wheel assembly
GB18311/65A GB1070886A (en) 1964-05-05 1965-04-30 Improved counter wheel assembly
NL6505703A NL6505703A (xx) 1964-05-05 1965-05-04
CH619065A CH436797A (de) 1964-05-05 1965-05-04 Ziffernrolleneinheit für mehrstelliges Zählwerk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US365087A US3223316A (en) 1964-05-05 1964-05-05 Counter wheel assembly

Publications (1)

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US3223316A true US3223316A (en) 1965-12-14

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ID=23437424

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Application Number Title Priority Date Filing Date
US365087A Expired - Lifetime US3223316A (en) 1964-05-05 1964-05-05 Counter wheel assembly

Country Status (4)

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US (1) US3223316A (xx)
CH (1) CH436797A (xx)
GB (1) GB1070886A (xx)
NL (1) NL6505703A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142672A (en) * 1977-12-05 1979-03-06 Veeder Industries Inc. Counter wheel assembly with improved reset control mechanism
US4473742A (en) * 1982-07-02 1984-09-25 Veeder Industries Inc. Counter wheel assembly with improved drive clutch mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1471306A (en) * 1922-06-06 1923-10-16 Irving C Decatur Resetting counter
US2023298A (en) * 1935-12-03 Manual zero-setting mechanism fob
US2055381A (en) * 1936-09-22 Zero-setting mechanism
US2133777A (en) * 1937-03-04 1938-10-18 Veeder Root Inc Ratchet clutch mechanism
US2285844A (en) * 1939-11-29 1942-06-09 Veeder Root Inc Counter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2023298A (en) * 1935-12-03 Manual zero-setting mechanism fob
US2055381A (en) * 1936-09-22 Zero-setting mechanism
US1471306A (en) * 1922-06-06 1923-10-16 Irving C Decatur Resetting counter
US2133777A (en) * 1937-03-04 1938-10-18 Veeder Root Inc Ratchet clutch mechanism
US2285844A (en) * 1939-11-29 1942-06-09 Veeder Root Inc Counter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142672A (en) * 1977-12-05 1979-03-06 Veeder Industries Inc. Counter wheel assembly with improved reset control mechanism
US4473742A (en) * 1982-07-02 1984-09-25 Veeder Industries Inc. Counter wheel assembly with improved drive clutch mechanism

Also Published As

Publication number Publication date
CH436797A (de) 1967-05-31
NL6505703A (xx) 1965-11-08
GB1070886A (en) 1967-06-07

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