US3707262A - High-speed tape perforator - Google Patents

High-speed tape perforator Download PDF

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Publication number
US3707262A
US3707262A US92778A US3707262DA US3707262A US 3707262 A US3707262 A US 3707262A US 92778 A US92778 A US 92778A US 3707262D A US3707262D A US 3707262DA US 3707262 A US3707262 A US 3707262A
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US
United States
Prior art keywords
tape
electromagnet
advance
toggle
perforator
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Expired - Lifetime
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US92778A
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English (en)
Inventor
Armando Costa
Giovanni Cerutti
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Olivetti SpA
TIM SpA
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Olivetti SpA
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Publication date
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Publication of US3707262A publication Critical patent/US3707262A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • H04L17/20—Apparatus or circuits at the receiving end using perforating recorders
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/02—Methods or arrangements for marking the record carrier in digital fashion by punching
    • G06K1/06—Manually-controlled devices

Definitions

  • the present invention relates to a high-speed tape perforator for teleprinters or other devices which produce punched tape, comprising a series of punches each adapted to be actuated by a corresponding toggletype kinematic train under the control of a corresponding selection electromagnet.
  • a paper tape perforator is known in which each toggle-type kinematic train is operated directly by aneccentric mounted on the driving shaft and in which the selection of the punches which are to perforate is carried out by electromagnets.
  • each electromagnet controls a stop for an element of the associated toggle, for which reason the kinematic selection train hasonly a unilateral connection with the toggle.
  • the apparatus is therefore relatively slow and not very exact in operation.
  • the perforator of this invention provides a highspeed tape perforator, comprising a series of punches eachadapted to be actuated'by a corresponding kinematic train including a toggle under the control of a corresponding selection electromagnet, wherein each toggle is connected to a lever bearing the armature of the corresponding selection electromagnet, means being provided for cyclically actuating the toggle and for bringing the armatures into contact with the corresponding electromagnets with a predetermined phasing with respect to the action of the toggle.
  • the perforator is adapted to operate at high speed, for example 50 characters per second. It comprises a series of eight punches (FIG. 1.) adapted to perforate a paper tape 12 in accordance with an eight-unit code, and a central punch 11 (FIG. 2)-with a diameter slightly smaller than that of the other punches and adapted to make the draw or feed holes in the tape.
  • the tape 12 is guided in a slot 13 (FIG. 1) formed in a perforation die 14.
  • the punches 10 and 11 are located in a common vertical plane and, in addition to being guided by the die 14, are also guided by a drilled cross-piece 16.
  • the die 14 and the crossspiece 16 are fixed to two side plates .17 and18 (FIG. 2) of the fixed frame of the perforator.
  • Each of the punches l0 and 11 is actuated by a kinematic train indicated generally by the reference 19 (FIG. 1) and comprising a lever 21, a connecting rod 22, two toggle levers 23 and 24 and a rocking lever 26.
  • Each lever 21 comprises two laminations 27 and 28 (FIG.'6) connected together'by a covering 29 of plastic material and by three pins 30.
  • the covering 29 has in tegral therewith a collar 35 which turns on a shaft 31 and forms an anti-friction bush or bearing for the shaft 31.
  • This shaft is supported by the two side plates 17 and 18 (FIG-2).
  • the laminations 27 and 28 form two arms 32 and 33 (FIG. 6). At the end of the arm 32 the laminations are bent to form a fork 34 (FIG. 2).
  • a pin 36 (FIG. 6) on which the connecting rod 22is pivoted.
  • the two laminations 27 and 28 of the arm 33 are spaced from one another, leaving between them a space 37 in which is housed an armature 38 pivoted on a pin 39 fixed to the arm 33.
  • the armature 38 is adapted to cooperate with a selection electromagnet 41 (FIG. 1).
  • the electromagnets 41 are aligned alternately in two rows. Five of the nine electromagnets 41 are aligned in a position such that their armatures 38 are substantially horizontal, while the other four are disposed below the shaft 31 in a position such that their armatures are oblique. Although the levers 21 have their arms 32 all aligned, their arms 33 are altemately' offset from one another and face the corresponding electromagnet 41. p
  • the lever 24 also comprises two laminations 42 and 43 (FIG. 6) interconnected by a first pin 44 on which the connecting rod 22 is pivotechby a second pin 46 fixed at the upper end to which the rocking lever 26 is articulated, and by a third pin 47 fixed at the lower end on which the lever 23 is pivoted.
  • the rocking levers 26 are fulcrumed on a single shaft 48 supported by the two side plates 17 and 18 (FIG. 2) and each of them has knuckle 49 (FIG. 6) in engagement with a hollow 51 formed in the corresponding punch 10, 1 1.
  • the parts 22, 23 and 26 of the kinematic train each comprise a single lamination which is embraced by the two laminations 27 and 28 and 42 and 43, respectively, of which the parts 21 and 24 are formed.
  • the joints of the toggle are centered in the thickness of the parts themselves, so that the stresses are symmetrical and lateral thrusts on these joints are eliminated.
  • sticking or twisting is eliminated and the perforator can be actuated at high speed.
  • the levers 23 and 24 are normally aligned in a substantially vertical plane.
  • the levers 23 are moreover pivoted on a common shaft 52 belonging to a frame indicated generally by the reference 53 (FIG. 2) and comprising two side pieces 54 and 56 parallel to one another and fulcrumed on the shaft 31.
  • Each of the side pieces 54 and 56 is provided with two lugs 57 and 58, respectively, (FIG. 1), parallel to one another and cooperating with corresponding cams 59 and 61 keyed on a shaft 62.
  • This shaft is rotatable cyclically in the side pieces 17 and 18 and constitutes the main shaft of the perforator.
  • the cams 59 and 61 have three like lobes and cause the movable frame 53 to perform three oscillations for each revolution of the shaft 62.
  • Advance of the tape 12 is obtained by means of a pin wheel 67 keyed on a shaft 68 rotatable in the side plates 17 and 18 (FIG. 2).
  • the wheel 67 is arranged in the same plane as the central punch 11 and has pins of the same diameter as this punch.
  • a ratchet wheel 69 which is rotated by a pawl mechanism actuated by the cam 61.
  • a V-shaped lever 71 (FIG. 3) fulcrumed on a shaft 72 is provided with two lugs 73 parallel to one another and engaging the cam 61.
  • the lever 71 has a projection 74 to which there is fixed a pin 76 engaged in a slot 77 in an arm 78 of a bail 79. This bail is fulcrumed on a shaft 81 supported by the side plates 17 and 18 (FIG. 2).
  • the lever 84 (FIG. 3) has two arms 87and 88 of a form substantially similar to that of the levers 21, with the arm 88 substantially vertical. At the end of the arm 87 the two laminations are bent to form a fork carrying a pin 89 on which is pivoted a connecting rod 91.
  • the laminations of the arm 88 are bent so as to be spaced from one another and define between them a space 92 in which an armature 93 is housed. This armature is pivotedon a pin 94 of the arm 88 and is adapted to co-operate with an electromagnet 96.
  • a pin 102 on which is pivoted one end of a lever103.
  • the other end of the lever 103 is pivoted between two laminations disposed side by side and forming a lever 104 which, together with the lever 103, forms a toggle.
  • the two laminations of the lever 104 are provided in the central portion thereof with two projections 106 bearinga pin 107 on which is pivoted the other end of the connecting rod 91.
  • the lever 84, the connecting rod 91 and the toggle levers 103 and 104 form a kinematic train substantially similar to the kinematic trains 19, so that this kinematic train is also adapted to operate at high speed without any lateral forces.
  • a pin 108 'on which a pawl 109 is articulated.
  • the pawl is fulcrumed on a pin 111 fixed to one end of a lever 112 which can turn on the shaft 68 and is normally held so that it bears against a fixed stop 113 by the action of a spring 114.
  • the pawl 109 is bent to present a tooth 116 in correspondence with a space of the ratchet wheel 69.
  • the wheel 69 is held in the position it has reached by means of a detent comprising a cylindrical socket 117 in which there is housed a compression spring 118 urging a small ball 119 into a space of the wheel 69.
  • the socket 117 is fixed to the side plate 18 by a screw 12].
  • the signal issuing from the electromagnet 127 commands the energization of the electromagnets 41, which are concerned with the perforation, while the signal issuing from the electromagnet 1-28 in the presence of a'code to be punched commands in known manner the energization of the electromagnet 96 which is concerned with the advance of the tape.
  • the perforator operates in the following manner.
  • the shaft 62 is normally in continuous rotation, for which reason the perforation is effected in synchronous manner.
  • a perforation cyclealways begins with an executive stage, which is followed by a stage of advance of the tapeflo this end, the perforation cycle begins when one of the three magnetic indicators 124 of the disc 122 is in correspondence with the electromagnet 127.' In this position, shown in FIG. 1, all the armatures 38 are just completing their approach to the respective electromagnets 41.
  • the signal emitted by the electromagnet 127 retrieves a code combination corresponding to the character to be punched. from the store, causing the corresponding electromagnets 41 to be energized selectively.
  • the electromagnet 41corresponding to the central punch 11 is energized to com-- mand the punching of the draw hole in the tape.
  • the advance of the tape 12 takes place.
  • the advance stage is displaced by a phase lag of 90 with respect to the perforation stage described above.
  • the lever 71 (FIG. 3) is actuated by the cam 61 with a phase displacement lagging by 90 with respect to the movable frame 53.
  • a magnetic indicator 126 is located in correspondence with the electromagnet 128 after the cams 59. and 61 have performed a rotation of 90 from thebeginning of the perforation stage.
  • the armature 93 is just completing its approach to the corresponding electromagnet 96.
  • the signal emitted by the electromagnet 128 retrieves from the store an advanced command signal which causes the electromagnet 96 to be energized.
  • each toggle 23, 24 is connected to a lower 21 bearing the armature 38 of the corresponding selection electromagnet 41, and that the means 53, 59 and 61 are provided for cyclically actuating the toggle levers 23, 24 and for bringing the armatures 38 into contact with the corresponding electromagnet 41 with a predetermined phasing with respect to the actuation of the toggle levers 23, 24.
  • a high speed tape perforator comprising:
  • a kinematic train associated with said electromagnet and operable thereby to actuate the associated punch, said kinematic train including a collapsible toggle having a driven end and a driving end operatively associated with said punch,
  • said electromagnet being selectively excited for keeping said armature in contact with said electromagnet for a predetermined interval of time and
  • moving means connected to said driving end and cyclically operable for moving said driving end in said predetermined interval along said direction, whereby said driven end when so aligned is moved by said driving end in said direction to actuate the associated punch.
  • a tape perforator as claimed in claim 3 comprising means for advancing said paper tape located adjacent said tape,
  • an advance toggle having a driving end and a driven end, said driving end being operatively associated with said tape advance means
  • an advance armature bearing lever coupled to said toggle and cooperating with said advance electromagnet to place said toggle in a driving position, the driven end of said advance toggle being operatively associated with and responsive to said multi-lobed cam to advance said paper tape.
  • a tape perforator as claimed in claim 4 comprising an advance control lever cooperating with said cam and having a phase displacement of 909 with respect to said common frame.
  • a tape perforator as claimed in claim 4 including means for regulating the advance of said paper tape to follow perforating said tape.
  • said advance regulating means comprise a disc fast with said cam, position indicators carried on the periphery of said disc, and a detector associated with said indicators and coupled to said selection electromagnets and comprise alternately a single lamination and twolaminations disposed side by side and adapted to embrace a single lamination of an adjacent element.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US92778A 1969-11-28 1970-11-25 High-speed tape perforator Expired - Lifetime US3707262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5419669 1969-11-28

Publications (1)

Publication Number Publication Date
US3707262A true US3707262A (en) 1972-12-26

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ID=11286932

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Application Number Title Priority Date Filing Date
US92778A Expired - Lifetime US3707262A (en) 1969-11-28 1970-11-25 High-speed tape perforator

Country Status (6)

Country Link
US (1) US3707262A (enrdf_load_stackoverflow)
JP (1) JPS5038483B1 (enrdf_load_stackoverflow)
CH (1) CH521639A (enrdf_load_stackoverflow)
DE (1) DE2059326A1 (enrdf_load_stackoverflow)
FR (1) FR2069069A5 (enrdf_load_stackoverflow)
GB (1) GB1328285A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5464283U (enrdf_load_stackoverflow) * 1977-10-14 1979-05-07
JPS5485387U (enrdf_load_stackoverflow) * 1977-11-30 1979-06-16

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132797A (en) * 1961-09-08 1964-05-12 Creed & Co Ltd Perforating apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132797A (en) * 1961-09-08 1964-05-12 Creed & Co Ltd Perforating apparatus

Also Published As

Publication number Publication date
CH521639A (it) 1972-04-15
DE2059326A1 (de) 1971-06-09
GB1328285A (en) 1973-08-30
FR2069069A5 (enrdf_load_stackoverflow) 1971-09-03
JPS5038483B1 (enrdf_load_stackoverflow) 1975-12-10

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