US3596067A - Counter mechanism - Google Patents

Counter mechanism Download PDF

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Publication number
US3596067A
US3596067A US752677A US3596067DA US3596067A US 3596067 A US3596067 A US 3596067A US 752677 A US752677 A US 752677A US 3596067D A US3596067D A US 3596067DA US 3596067 A US3596067 A US 3596067A
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United States
Prior art keywords
spindle
lever
pivot
counter mechanism
spring
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Expired - Lifetime
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US752677A
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English (en)
Inventor
Werner Wahli
Ernst Hofer
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W Wahli AG
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W Wahli AG
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Publication date
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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
    • G06M1/28—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 counter mechanisms and more especially to a counter mechanism of the kind comprising a set of counting wheels arranged side-by-side on'a spindle in individually rotatable manner, each counting wheel having a ring gear and being coordinated with a coaxial gear carrying a heart-shaped cam, and with a setting gear in axially parallel manner, with a set of decade stepping wheels arranged on a common spindle which is parallel to the first-mentioned spindle and movable toward and away from the latter against spring loading, each stepping gear being arranged for stepping engagement with two adjacent counting wheels, and with a set of resetting elements cooperating individually with the heartshaped cams, which are actuated by a common pivot spindle.
  • the present invention seeks to overcome this drawback by incorporating an electric switching element and cooperating actuation means in the counter mechanism, which are controllable by means of the pivot spindle and are so constructed that they do not assume the position required for actuation of the switching element until after complete resetting of the counting wheels has been carried out.
  • FIG. 1 is a partial plan view of a counter mechanism according to the invention with parts in axial section along the line H in FIG. 2,
  • FIG. 2 is a cross section through the counter mechanism along the line II-II in FIG. 1,
  • FIG. 3 is a cross section along the line III-Ill in FIG. 1,
  • FIG. 4 is a partially sectioned partial side view of FIG. 1, showing one of the heart-shaped cams and the elements cooperating therewith,
  • FIG. 5 is a partial top view of certain elements illustrated in FIG. I.
  • FIGS. 6-1l are partial cross sections similar to FIG. 2 and showing the elements illustrated in FIG. 2, in successive position's, these elements will assume during resetting of the counter.
  • the counter mechanism is arranged on a housing base 1 and enclosed by a housing 2 screwed to the base, which housing has a window 3 through which the position of the counting wheels 4 may be read. Only three of the counting wheels are shown in FIG. 1.
  • the counting wheels 4 of the counter mechanism are rotatable on a spindle 5 secured in the two sidewalls of the housing base 1, the digit wheel, which is not shown, being driven in known manner and the other counting wheels each being step switched through a secondary switching gear 6 by the counting roll adjacent thereto to the right hand side, as shown in FIG. I.
  • a pivot spindle 7 parallel to the spindle 5 and arranged in the sidewalls of the housing base 1, has an actuating lever 8 fastened on it outside the housing and a gearwheel 9 inside the housing, the gearwheel 9 meshing with a gearwheel l rotatable on the spindle and on whose hub 11 a cam 12 is seated.
  • a resetting element 56 is arranged on the pivot spindle 7 for each counting wheel, which acts in a known manner on a heart-shaped cam 13 coordinated with the counting wheel, when the actuating lever 8 is being operated in order to reset the counting wheel.
  • the counter mechanism is equipped with a setting gear 14 for each counting wheel 4, which gears are individually rotatable on a spindle 15 parallel to the counting wheel spindle 5 and each engage in a ring gear 16 associated with the cor- 5 responding counting wheel 4.
  • counting wheels in question may, when the heart-shaped cams 13 are blocked by means of the resetting elements 56, be set to a required number to which the counting wheels are to be reset in each instance after operation of the counter mechanism, by actuation of the actuating lever 8.
  • the cam 12 By depressing the actuating lever 8 in the direction of the arrow A in FIG. 2, the cam 12 is caused to turn in the direction of the arrow B on the spindle 5, through the gears 9 and 10, and to tension a torsion spring 17 which is connected at one end on a cross pin 18 of the cam 12 and at the other end on a pin 19 protruding from the sidewall of the housing.
  • the nose 20 of the cam 12 engages a lever 21 which is rotatable on a bearing bolt 22 secured in the sidewall of the housing, and a torsion spring 23, having a pair of free end portions respectively engaging studs projecting laterally from the lever 21 and a pawl 27 tends to keep the lever in the middle position shown in FIG. 2.
  • the turning nose 20 displaces the lever 21, as shown in FIG. 6, tensioning the torsion spring 23 until the nose 20 turns past the displaced lever 21 and releases the lever, as shown in FIG. 7, so that the torsion spring 23 again turns the lever back to the middle position.
  • the counting wheels 4 have reached the terminal position of their resetting, and the actuating lever 8 has reached its terminal position in which it bears through an arm 24 secured on the gear 9, against an adjustable abutment pin 25 on the housing base 1 (FIG. 3).
  • the tensioned torsion spring 17 acting through the gears 10 and 9 and the pivot spindle 7 returns the actuating lever 8 to its initial position.
  • the cam 12 is turned at the same time in the opposite direction to that of the arrow B and its nose 20 impinges on the lever 21, as shown in FIG. 9, and then turns the lever out of the middle position in the opposite direction, as shown in FIG.
  • the cam 12 On a part of its periphery, the cam 12 has a projection 36 protruding transversely to the nose 20, which during rotation of the cam 12 in the direction of the arrow B impinges on the periphery of a spring catch 37 which is rotatable on the spindle 38 carrying the secondary stepping pinions 6 and is resiliently held in abutment against a pin 40 by a torsion spring 39.
  • the spindle 38 is held in the limbs of an U-shaped yoke 41 which has the limbs joumaled on the spindle 7 and with a pin 40 projecting from one of its limbs.
  • the cam 12 On pivoting the actuating lever 8 back to the initial position, the cam 12 is also turned in the opposite direction to that of the arrow B and its projection 36 turns the spring catch 37 about the spindle 38 and away from the stop pin 40, the spring catch turning with its projection 43 with the flattened outline 44 at smaller distance from the spindle 38 against the projection 36 of the cam 12 and enables the yoke 41 to execute immediate inward swiveling of the secondary stepping pinions 6 by the action of the torsion spring 42 into the position of engagement on the counting wheels 4, which are thus held in their reset position, whereas the resetting elements 56 release the heart-shaped cams 13. This prevents possible misalignment of the counting wheels as a result of resetting.
  • the setting gears M on the spindle 15 are accessible from the outcide through an opening 45 (FIG. 2) in the housing cap 2, which may be uncovered and covered by means of a lid 47 which has two bearing eyes 46 and 46 secured to the spindle l and may be operated from the outside by means of a projecting grip 48.
  • the spindle is arranged in axially displaceable and rotatable manner in the sidewalls of the housing, and carries tube portions 59 coaxially fixed thereto.
  • the tube portion in the region of the left end of the spindle 115, as viewed in FIG. 1, has slanted faces 49, forming two points 50 facing one sidewall and bearing against a plate 51 secured on this wall.
  • the points 50 enter a groove 52 present in plate 51 when the hinged lid 47 is fully open and the spindle 15 as well as the tube portion with points 50 thereon is turned thereby to the position shown in FIG. 5 which is displaced through an angle of 90 with respect to the position shown in FIG. 1.
  • a torsion spring 60 wound about the spindle 15, and engaging a projection on the bearing eye 46', tends to keep the lid 47 in the closed position, and in the open position of the lid biases the points 50 into the groove 52 as shown in FIG. 5, whereas the points 50 are cammed out of the groove 52 during closing of the lid.
  • the insertion and ithdrawal of the points 50 into and out of the groove 52 imparts a small axial displacement towards the left and right in FIG.
  • the setting gears 14 In the disengaged condition, that is to say when the hinged lid 47 is opened, the setting gears 14 then merely engage in the ring gears 16 of the counting rolls 4 and allow of optional setting of a required numerical value within the digital capacity of the counter mechanism, whereas in the engaged position, i.e., when the lid 47 is closed, each setting gear 14 engages the respective gears 16 and 53 so that these gears will rotate together with the respective counting wheel.
  • the hinged lid 47 possesses a projecting longitudinal edge 54, which acts in conjunction with a branch 55 of the feeler lever 30 when the lid is opened, and displaces it so far that the switching stud 32 of the reversing switch 33 is depressed, thus operating the reversing switch and the feeler lever 30 being held against the spring loading of the switching stud 32 by the shoulder 34 of the pawl branch 28.
  • its longitudinal edge 54 moves away from the branch 55 of the locked feeler lever 30 and the cog points 50 pass from the groove 52 on to the plate 51, thereby causing the spindle 15 with the lid 47 and the setting gears 14 to be displaced towards the right in FIG.
  • a counter mechanism comprising support means; a first spindle mounted on said support means; a plurality of counting wheel rotatably arranged side-by-side on said first spindle; a ring gear coaxially fixed to each of said counting wheels; a further gear coaxially arranged on said first spindle adjacent each ring gear; a heart-shaped cam on each further gear; a second spindle mounted on said support means parallel to said first spindle; a plurality of setting gears turnable relative to each other on said second spindle and respectively meshing with said ring gear and said further gear of each counting wheel; a third spindle mounted on said support means parallel to said first spindle; a plurality of stepping wheels on said third spindle, each arranged for stepping engagement with two adjacent counting wheels; mounting means mounting said third spindle movable toward and away from said first spindle; biasing means biasing said third spindle towards said first spindle to keep said stepping wheels in engagement with said counting wheels; a pivot spindle mounted
  • said last-mentioned means comprises a tiltable lever and a spring tending to maintain said lever in a rest position said cam having a nose engaging said lever during turning of said pivot spindle from said one to said other end position to tilt said lever in one direction from said rest position, said nose passing said lever as said pivot spindle reaches said other end position so that said lever returns to said rest position under the influence of said spring, said nose engaging said lever during turning of said pivot spindle from said other to said one end position to turn said lever in the opposite direction from said rest position, said lever having a lug engaging said latch during turning of said lever in said opposite direction to thereby tilt said latch from said latching to said releasing position thereby releasing said feeler lever so that said switch element will move to said extended position.
  • said means on said third spindle comprise a spring catch tumably mounted thereon, said spring catch having a pair of substantially cylindrical peripheral surface portions separated at one of the ends thereof by a cutout and at the other ends thereof 5 by a flattened portion closer to the axis of said spring catch than said cylindrical peripheral surface portions, a pin fixed to said bracket and extending into said cutout, and a spring biasing said catch so that said pin is located at said one end of one of said peripheral surface portions, said cam having a projection engaging during turning of said pivot spindle from said peripheral surface portions to thereby tilt said bracket in a direction which moves said third spindle away from said fust spindle.
  • a counter mechanism as defined in claim 8 including a member fixed to said second spindle for movement therewith and having at least one pointed end laterally of the axis of said second spindle, a stationary member having a bearing surface and being formed with a transverse groove in said bearing surface, a spring cooperating with said second spindle for biasing said pointed end of said member fixed to said second spindle against said bearing surface so that by turning of said second spindle in one or the other direction said pointed end will either engage said bearing surface or in said groove causing thereby axial displacement of said second spindle and said setting gears between said two positions of the latter.
  • said support means comprise a housing formed with an opening providing access to said setting gears, a cover closing said opening and fixedly hinged to said second spindle so that the latter is turned about its axis during movement of said cover to an open position to cause during such movement said pointed end to move into said groove so that when said cover is opened said setting gears will only engage said ring gears and so that the latter together with said counting wheels may be turned by said setting gears relative to said further gears carrying said heart-shaped cams.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Transmission Devices (AREA)
US752677A 1967-08-16 1968-08-14 Counter mechanism Expired - Lifetime US3596067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1152267A CH474801A (de) 1967-08-16 1967-08-16 Zählwerk

Publications (1)

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US3596067A true US3596067A (en) 1971-07-27

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US752677A Expired - Lifetime US3596067A (en) 1967-08-16 1968-08-14 Counter mechanism

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US (1) US3596067A (enrdf_load_stackoverflow)
CH (1) CH474801A (enrdf_load_stackoverflow)
DE (1) DE1774684A1 (enrdf_load_stackoverflow)
FR (1) FR1597438A (enrdf_load_stackoverflow)
GB (1) GB1238916A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977599A (en) * 1974-05-22 1976-08-31 Hans Bud Counting devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977599A (en) * 1974-05-22 1976-08-31 Hans Bud Counting devices

Also Published As

Publication number Publication date
DE1774684A1 (de) 1972-03-30
GB1238916A (enrdf_load_stackoverflow) 1971-07-14
CH474801A (de) 1969-06-30
FR1597438A (enrdf_load_stackoverflow) 1970-06-29

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