US3571574A - Counting device for folded sheets, particularly folded newspapers - Google Patents

Counting device for folded sheets, particularly folded newspapers Download PDF

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Publication number
US3571574A
US3571574A US645758A US3571574DA US3571574A US 3571574 A US3571574 A US 3571574A US 645758 A US645758 A US 645758A US 3571574D A US3571574D A US 3571574DA US 3571574 A US3571574 A US 3571574A
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United States
Prior art keywords
feeler
counter
pulse
pulses
tilting
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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
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US645758A
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English (en)
Inventor
Walter Gerber
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.)
Ferag AG
Ferag Fehr and Reist AG
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Ferag AG
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M7/00—Counting of objects carried by a conveyor
    • G06M7/08—Counting of objects carried by a conveyor wherein the direction of movement of the objects is changed at the station where they are sensed
    • G06M7/10—Counting of flat overlapped articles, e.g. of cards
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/02—Input circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M2207/00—Indexing scheme relating to counting of objects carried by a conveyor
    • G06M2207/02—Counting of generally flat and overlapped articles, e.g. cards, newspapers

Definitions

  • the counting device is particularly adapted to count newspapers travelling in imbricated arrangement on a conveyor means past a feeler which Chimsamawing Figs upon being actuated by each successive protruding folding U.S.Cl 235/92, edge of the overlapping newspapers produces an electrical 235/98 pulse to be registered by a counter.
  • Means are provided for lnt.Cl G06m 7/06 blocking the registering operation of the counter during a Field of Search 235/92 (33, period of time corresponding to the time of passage of a frac- 29, 29 (T), 29 (TF), 61, 37, 27.1), 98; 198/40; tion of the distance between two successive folding edges past 221/2 said feeler.
  • Counting devices of the above mentioned type have the inconvenience that counting mistakes will be registered when the folds of the imbricated newspapers are not clearly defined.
  • the paper surface between two successive fold edges of the imbricated arrangement may show protruding bulges, undulations or wrinkles the size of which may approach the level of the folded edges, so that the feeler not only is responsive to the succession of folds, but also to such undesired protuberances and thus registers additional pulses resulting in erroneous counting indications.
  • Such errors particularly occur when the newspapers to be counted are relatively thin, so that the difference in level between the folding edges and the lowest point of the imbricated arrangement is small, or when the newspapers are quite thick and undulations are formed in the paper in proximity to the fold.
  • An object of the invention is to provide a counting device of the above mentioned type which avoids such counting errors.
  • the improvement according to the invention comprises means for blocking said counter and preventing registration of pulses during a period of time beginning with the passage of each successive folding edge past said feeler and corresponding to the passage of a fraction of the distance between two successive folding edges past said feeler.
  • FlG. l is a diagrammatic illustration of a counting device comprising a monostable multivibrator
  • FlGS. 2a, 2b, 2c, 2d, 2e and 2f represent a pulsing program of the counting device shown in FIG. ll,
  • FlG. 3 is a diagram of a modification of the device including a monostable multivibrator
  • FIG. i represents a diagram of a further modification of the counting device.
  • the diagrammatically represented counting device comprises a feeler ll having a feeler needle in which is adapted to slide over a succession of folded newspapers a supported in imbricated overlapping arrangement on a conveyor means, for example an endless conveyor band 2.
  • a conveyor means for example an endless conveyor band 2.
  • the direction of movement of the conveyor band is indicated by the arrow 3.
  • the folded edge da of each newspaper 4 forms a protuberance which will actuate the feeler element lla when the succession of newspapers moves past this element, and at each actuation of the feeler element la the feeler i produces an electric pulse.
  • the distance between two successive folding edges or protuberances lla of the conveyed newspapers is designated by 5, while the reference numeral 6 indicates a fraction of the distance rearwardly of each folding edge, over which fraction the newspaper may have wrinkles, pleats, creases or undulations in the paper, having such a height above the normal paper surface of the feeler that they will also actuate the element 1a and produce undesired pulses.
  • the output of the feeler 1 is connected to a pulse shaper 7 which serves to transform the irregular shaped pulses produced by the feeler i into rectangular pulses of corresponding width but of constant amplitude.
  • the pulse shaper 7 also produces a differentiation of the ascending flank of the pulses.
  • the resulting pulse is fed to a successive monostable multivibrator h which normally is in its inoperative position.
  • a differentiated pulse of the pulse shaper 7 it is tilted into its other position and thereby produces a pulse fed to the successive amplifier 9 from which the amplified pulse is delivered to a counter it), for example an electromagnetic or an electronic counter having optical indicator means to indicate the W3. values.
  • the retention time of the monostable multivibrator 8 in its tilted position i.e. its time constant is greater than the longest period between two successive folds Ala of the newspapers passing past the feeler element la.
  • the longest occurring distance 5 between successive folds 3a and the lowest travelling speed of the conveyor band 2 are to be considered.
  • the multivibrator 8 is not responsive to further pulses arriving at the input. Particularly, any such further pulses cannot arrive at the counter 10, since counting pulses are produced only when the multivibrator 8 is tilted out of its normal condition. Accordingly, if interference pulses are produced by the feeler l at small time intervals after the production of the main pulse by the folds be of the newspapers, the counter 10 is blocked against reception of such pulses, due to the monostable multivibrator being in its tilted condition.
  • Such means comprise a pulse generator ll, producing pulses with a frequency proportional to the frequency of passage of the folds la past the feeler element lla, accordingly also proportional to the speed of the conveyor band 2 and inversely proportional to the distance 5 between the folds 4a.
  • the pulse frequency is maintained constant.
  • a pulse generator suitable for the device of this invention can be formed by a photoelectric apparatus having a segment shutter, a light source and a photoelectric cell, or a corresponding electromagnetic arrangement.
  • the pulses produced by the pulse generator ll arrive at a pulse shaper and pulse gate 12 and then at a pulse counter 13.
  • This latter comprises one or more counting decades l4 and a preselection device 15 which serves to set the counter to a number at which the decades M will produce an output pulse.
  • a restoring circuit arrangement 16 is further provided for restoring the counting decade M to zero by a line 17 when it arrives at the set number.
  • the output pulse of the counter 13 passes through a line 118 to the multivibrator 3 and restores this latter to its normal condition.
  • the pulse gate i2 is provided which is controlled by the multivibrator 8 as schematicmly represented by the line 19.
  • the pulse gate 12 is opened, so that the pulses of the pulse generator lii may arrive to the input side of the counting decade 14.
  • the pulse gate 12 is closed again when the multivibrator tilts back, so that feeding of pulses to the counting device l?) is blocked.
  • FIG. 20 represents the pulses at the output of the feeler i.
  • the main pulse 20 produced by the feeler owing to the passage of a fold 4a of the newspapers may be followed by one or more interference pulses 21 due to the presence of an irregular surface of the newspaper, the registering of such interference pulses having to be prevented.
  • FlG. 2b represents the pulse 22 as transformed by the pulse shaper 7, which pulse is rectangular and of constant amplitude.
  • the rectangular pulse 22 is further transformed by differentiation in the impulse shaper 7 into a narrow pulse 24 (FIG. 20) having a steep ascending flank.
  • the interference pulses Zll also will be transformed in similar manner to pulse shapes indicated at 23 and 25.
  • FlG. 2d represents the the of the monostable multivibrator 8, for example by the voltage at an electrode of a tube or a transistor.
  • the zero line 0 corresponds to the stable normal condition of the multivibrator, while the unstable tilted condition is represented for example by an electrode voltage 26.
  • the multivibrator is tilted by the pulse 24.
  • the voltage rise occurring upon tilting passes to the counter (FIG. 1) for registration.
  • the time constant of the multivibrator is so chosen that the voltage 26 per se is retained at least until the arrival of the next following pulse 24.
  • the interference pulses have no effect since they cannot produce any change of the voltage 26, and therefore the counter Ml is not actuated by these pulses.
  • FIG. 2e represents the output pulses of the pulse generator 11 after transformation into narrow rectangular pulses 27.
  • the pulse generator produces ten counting pulses.
  • FiG. 2f represents the pulses produced by the pulse generator 11 at the input side of the counter 13.
  • the preselector 15 is so adjusted that the decade 14 counts 7 pulses.
  • the multivibrator is restored to normal position, so that the voltage 26 (FIG. 2d) drops to zero.
  • the tilting of the multivibrator produces blocking of the pulse gate 12, so that no further pulses 27 of the pulse generator 11 can arrive at the counter lll. Only upon appearance of the following pulse emitted by the feeler l.
  • FIG. 3 represents a modification of the counting device.
  • This device again comprises a feeler l with a feeling element, a pulse shaper 7, a monostable multivibrator 8, an amplifier 9 and a registering counter 10.
  • the operation of the multivibrator is the same as described with reference to FIG. 1.
  • the multivibrator is tilted, so that further interference pulses which may be emitted by the feeler do not exert any action on the counter.
  • a further feeler 29 is provided corresponding to the feeler l but which is displaced in the direction of travel of the newspapers which are not shown in this example, through the distance a, this distance being smaller than the distance between successive folds la of the newspapers.
  • the pulse produced by the feeler 29 is suitably transformed by a further pulse shaper 3t) and then fed to the monostable multivibrator d which is thereby tilted baclr into normal position.
  • the feeler 29 accordingly serves only the purpose of restoring the multivibrator, but not of counting.
  • the pulse counter in this example is more simple with respect to electrical equipment than that of FIG. l, but requires a more elaborate mechanical structure owing to the presence of a second feeler 29.
  • the modification shown in FIG. 4 comprises again a feeler I, a pulse shaper 7, a multivibrator d, an amplifier 9 and a counter 10.
  • the reference numeral 31 designates a Tacho- Generator which is driven in synchronism with the travelling speed of the newspapers on the conveyor and accordingly delivers a voltage proportional to this speed. This voltage will be used to charge an adjustable retardation means 32 which after having attained a certain charging voltage delivers a pulse to a pulse amplifier 33, the output pulse passing through the line 18 actuates the multivibrator and tilts it back to normal condition.
  • the retardation means 32 in turn is controlled by the multivibrator 8 through the line 19 and a switch step 34 in such a manner that the charging of the retardation means 32 is blocked so long as the multivibrator is in its normal position.
  • This arrangement accordingly does not produce the restoring pulse by a counting of secondary pulses (counter 13 of FIG. I), or as a result of a control pulse being produced by a feeler sensing the folds 4la of the newspapers at a displaced point (FIG. 3), but as a result of a pulse directly dependent on the maip pulse and released after a certain time delay which is proportional to the travelling speed of the newspapers, the
  • a counting device comprising 1, wherein said means for tilting the tilting switch means back to normal condition comprises a second counter operative to return said multivibrator to normal condition, said second counter receiving pulses at a frequency proportional to the frequency of the passage of said folding edges past said feeler, said second counter being responsive to a predetermined number of counted pulses to emit an output pulse fed to said multivibrator.
  • a counting device in which said second counter includes a decade and a preselection device for presetting said decade to said predetermined number of pulses to be counted for the emission of an output pulse.
  • said means for tilting the tilting switch means back to normal condition comprises a second feeler, the two feelers being adapted to emit pulses when actuated by the folding edges of said succession of folded sheets, said two feelers being arranged in series in the direction of travel of said conveyor means to be actuated in timed succession by the protruding folds of said sheets, the pulse emitted by the first actuated feeler being operative to tilt said tilting switch means into said other condition, and the pulse emitted by the second actuated feeler being operative to restore said tilting switch means to normal condition.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Controlling Sheets Or Webs (AREA)
US645758A 1966-06-15 1967-06-13 Counting device for folded sheets, particularly folded newspapers Expired - Lifetime US3571574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH860666A CH439341A (de) 1966-06-15 1966-06-15 Zählvorrichtung für gefaltete Papierbogen, insbesondere gefaltete Zeitungen

Publications (1)

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US3571574A true US3571574A (en) 1971-03-23

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CH (1) CH439341A (de)
DE (1) DE1561140A1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729620A (en) * 1971-10-04 1973-04-24 Electronic Data Preparation Co Stroke counter mechanism
US3746841A (en) * 1971-07-06 1973-07-17 Polygraph Leipzig Method and apparatus for initiating counting and/or disconnecting processes, in particular for printing presses
US3832883A (en) * 1972-11-09 1974-09-03 Itt Ball prover and components thereof
US4139765A (en) * 1976-10-28 1979-02-13 Ferag Ag Apparatus for counting printed products arriving upon a conveyor path in an imbricated product stream and method of operating such apparatus
US4213601A (en) * 1978-11-06 1980-07-22 Documation Incorporated Printer elevator control mechanism
US4229645A (en) * 1977-05-20 1980-10-21 Anic S.P.A. Detector and recorder of holes and disruptions in plastic material sheets and webs
US4539470A (en) * 1981-11-10 1985-09-03 Ferag Ag Counter apparatus for counting flat products moved along a conveying path or the like
US4974237A (en) * 1989-03-13 1990-11-27 Hall Processing Systems Contact type paper counter
US5105448A (en) * 1989-06-23 1992-04-14 Tokai Carbon Co., Ltd. Device for counting small projections or depressions on surfaces of objects
US6349125B1 (en) * 1997-12-30 2002-02-19 Ferag Ag Apparatus for counting flat objects

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2208270A (en) * 1938-10-31 1940-07-16 Howard D Newhall Counting mechanism
US3024985A (en) * 1960-02-15 1962-03-13 Bruning Charles Co Inc Sheet counters
US3239138A (en) * 1963-10-02 1966-03-08 Cutler Hammer Inc Electronic article counting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2208270A (en) * 1938-10-31 1940-07-16 Howard D Newhall Counting mechanism
US3024985A (en) * 1960-02-15 1962-03-13 Bruning Charles Co Inc Sheet counters
US3239138A (en) * 1963-10-02 1966-03-08 Cutler Hammer Inc Electronic article counting device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746841A (en) * 1971-07-06 1973-07-17 Polygraph Leipzig Method and apparatus for initiating counting and/or disconnecting processes, in particular for printing presses
US3729620A (en) * 1971-10-04 1973-04-24 Electronic Data Preparation Co Stroke counter mechanism
US3832883A (en) * 1972-11-09 1974-09-03 Itt Ball prover and components thereof
US4139765A (en) * 1976-10-28 1979-02-13 Ferag Ag Apparatus for counting printed products arriving upon a conveyor path in an imbricated product stream and method of operating such apparatus
US4229645A (en) * 1977-05-20 1980-10-21 Anic S.P.A. Detector and recorder of holes and disruptions in plastic material sheets and webs
US4213601A (en) * 1978-11-06 1980-07-22 Documation Incorporated Printer elevator control mechanism
US4539470A (en) * 1981-11-10 1985-09-03 Ferag Ag Counter apparatus for counting flat products moved along a conveying path or the like
US4974237A (en) * 1989-03-13 1990-11-27 Hall Processing Systems Contact type paper counter
US5105448A (en) * 1989-06-23 1992-04-14 Tokai Carbon Co., Ltd. Device for counting small projections or depressions on surfaces of objects
US6349125B1 (en) * 1997-12-30 2002-02-19 Ferag Ag Apparatus for counting flat objects

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Publication number Publication date
CH439341A (de) 1967-07-15
DE1561140A1 (de) 1970-04-16

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