US3217854A - Capital-shift mechanism for code printer - Google Patents

Capital-shift mechanism for code printer Download PDF

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Publication number
US3217854A
US3217854A US154300A US15430061A US3217854A US 3217854 A US3217854 A US 3217854A US 154300 A US154300 A US 154300A US 15430061 A US15430061 A US 15430061A US 3217854 A US3217854 A US 3217854A
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US
United States
Prior art keywords
case
relay
shift
circuit
switch
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
US154300A
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English (en)
Inventor
Braunig Friedrich
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.)
Olympia Werke AG
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Olympia Werke AG
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Filing date
Publication date
Application filed by Olympia Werke AG filed Critical Olympia Werke AG
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Publication of US3217854A publication Critical patent/US3217854A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B25/00—Apparatus specially adapted for preparation of record carriers for controlling composing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J23/00—Power drives for actions or mechanisms
    • B41J23/32—Electromagnetic power drives, e.g. applied to key levers
    • B41J23/34—Electromagnetic power drives, e.g. applied to key levers applied to elements other than key levers
    • B41J23/38—Electromagnetic power drives, e.g. applied to key levers applied to elements other than key levers and acting on aligning or case-shift mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
    • B41J3/50—Mechanisms producing characters by printing and also producing a record by other means, e.g. printer combined with RFID writer
    • B41J3/51—Mechanisms producing characters by printing and also producing a record by other means, e.g. printer combined with RFID writer the printed and recorded information being identical; using type elements with code-generating means

Definitions

  • I provide a solenoid or equivalent electrical actuator for the carriage shift and, in combination therewith, a set of circuit elements such as relays responsive to the operation of a shift-key-controlled switch for maintaining the carriage-shift actuator in either of two conditions, depending upon the switch position, and for momentarily responding to any change in this switch position to create a momentary impulse which energizes the coder and causes the recording of a corresponding entry.
  • a shift-key-controlled switch responsive to the operation of a shift-key-controlled switch for maintaining the carriage-shift actuator in either of two conditions, depending upon the switch position, and for momentarily responding to any change in this switch position to create a momentary impulse which energizes the coder and causes the recording of a corresponding entry.
  • I utilize a set of three relays of which the first is maintained in either its energized or its de-energized state for prolonged periods, i.e., for as long as the key switch occupies one or the other position, while the second relay is momentarily energized upon each switchover to generate a coding impulse and the third relay responds only to one type of switchover, e.g., the one which results in the de-energization of the first relay, to change the connections between the second relay and the coder whereby the entry to be made on the recording medium is suitably modified.
  • the first relay In order to enable the first relay to respond also to lower-case and upper-case shift signals when the type bars are controlled by a decoder, I prefer to provide the first relay with a holding circuit which is broken by the third relay when the latter is briefly operated by one of the two shift signals. In this case it is advantageous to provide two timing circuits, one for the second relay and the other for briefly extending the operating period of the third relay beyond the de-energization of the first relay, in order to generate pulses of prop- 3,217,854 Patented Nov. 16, 1965 er duration for the actuation of the coding elements.
  • the timing circuits may simply comprise condensers adapted to discharge through the windings of the respective relays in parallel with suitable resistances.
  • the system illustrated in the drawing comprises a conventional electric typewriter TW with keyboard KB, a set of type bars TB and a carriage roller CR adapted to hold a message sheet.
  • the carriage roller CR can be elevated or depressed relatively to the associated type-bar nest by means of a solenoid M.
  • a coding device has been shown schematically as a perforator P with the usual set of punches of which only two, designated P and P have been illustrated. These punches are controlled by solenoid coils 19 p and serve to perforate a tape T which is advanced in known manner in the direction of the arrow.
  • a corresponding reader F provided with the usual sensing pins of which again only two have been illustrated at F, and F serves as a decoder for the perforations entered on a tape T previously marked by perforator P or by a similar coder.
  • the punches P P etc. are actuated by the keys of keyboard KB, over known circuits not further illustrated, concurrently with the type bars TB corresponding to the depressed keys.
  • the keyboard KB includes a shift key SK which controls a reversing switch U.
  • a source of power illustrated schematically as a battery Q, serves to energize three relays B, E and A under the control of switch U.
  • Relays B and A are each provided with two windings b, b" and a, a", respectively, of which the windings b and a are energizable via respective leads 8 and 9 by switch contacts f and f respectively controlled by sensing pins F and F the energizing circuits for these windings are interrupted at contacts d d of a read-write switch D when the latter is in its illustrated recording position in which another contact d thereof connects the armature of switch U to battery Q.
  • decoding contacts such as f f controlled by corresponding sensing pins of reader F operate in conventional manner to generate character signals for the selective actuation of type bars TB in order to reproduce the message encoded on tape T.
  • any depression of shift key SK causes a reversal of the position of switch U whereupon a circuit is closed for the energization of the first relay B from battery Q via switch contact d switch U in its alternate position, and first circuit means including armature a and back contact of relay A, conductor 1 and winding b to ground.
  • Relay B attracts its armatures [7 42 which initiates the following operations:
  • Solenoid M is energized by way of armature b and its front contact, over a conductor 3, to changethe position of carriage roller CR, e.g., to raise it into its shifted position for the printing of capitals or upper-case characters.
  • Relay E in attracting its armatures e -e energizes the Winding p of punch P in a circuit extending from battery Q over armature e and its front contact, armature a, of the third relay A and its back contact, and a conductor 6 to ground through winding p Simultaneously the armature e of relay E engages its front contact to accelerate the discharge of condenser C by connecting it to a first timing resistor R
  • relay E releases after a brief interval, which may be of the order of 30 milliseconds, so that only a short pulse passes through the perforator winding p
  • the punch P thus perforates the tape T to produce a hole H which is assumed to constitute the code for upper-case characters.
  • Relay B remains locked in a holding circuit including a conductor 5, its own armature b and front contact, and the armature a of relay A whose back contact is tied to conductor 1; thus, the energization of relay B is unaffected by any partial release of shift key SK which does not involve a full reversal of switch U.
  • switch U When the shift key SK is subsequently released, switch U returns to its illustrated position and closes a circuit for winding a of relay A via a conductor 2 and the armature b; of relay B on its front contact.
  • Relay A in attracting its armatures a a breaks the holding circuit of relay B at armature a Armature a over its front contact, connects battery Q to conductor 4 so as to re-energize relay E.
  • a second timing condenser C heretofore charged from battery Q via the back contact of armature a now discharges through the front contact of that armature and conductor 2 to maintain the winding a energized after its original operating circuit has been broken at armature b Relay E, by attracting its armature e which is tied to lead 2, now connects a second timing resistor R to condenser C in parallel with winding a, thereby accelerating the discharge of the condenser and limiting the length of energization of relay A.
  • a brief pulse is now transmitted from battery Q via armature c and its front contact, armature a and its front contact and a conductor 7 to the grounded winding p of punch P whereby a hole H representing the lower-case code is perforated in the tape T.
  • Relay E releases with relay A as its energizing circuit is opened at armature a Conductors 6 and 7 thus form part of a pair of alternate operating circuits for the coding means P, these operating circuits being respectively established by second and third circuit means including individual reversing contacts a of relay A and common make contacts e of relay E.
  • a typewirter provided with a keyboard, type bars on said typewriter controlled by said keyboard and provided with upper-case and lower-case characters, a carriage on said typewriter having two positions relative to said type bars for the printing of lower-case and upper-case characters, respectively, shift means for relatively displacing said carriage and said type bars into either of said positions, a shift key of said keyboard, coding means electrically controlled from said keyboard for registering on a recording medium a variety of character entries in addition to a lower-case entry and an upper-case entry respectively representative of said positions, switch means coupled with said shift key for selective displacement thereby into an upper-case position and a lower-case position, first circuit means controlled by said switch means and coupled to said shift means for enabling the printing of upper-case characters and of lower-case characters in said upper-case position and said lower-case position, respectively, normally unoperated second circuit means coupled to said coding means and momentarily operable by said first circuit means upon displacement of said switch means into said upper-case position for producing said
  • said first circuit means includes a first relay connected to be energized in one of said positions of said switch means, said first relay having contacts for the control of said shift means; said second and third circuit means including a normally deenergized second relay, first timing means actuatable by said first relay upon the energization thereof for momentarily energizing said second relay, a normally deenergized third relay energizable in the other of said positions of said switch means via a circuit closed by said first relay in its energized state, said third relay having contacts connected to de-energize said first relay upon the energization of said third relay, and second timing means actuatable by said third relay for briefly extending its own energized state beyond the de-energization of said first relay.
  • said third relay has contacts for energizing said second relay for the duration of its own energization, said second and third circuit means including make contacts of said second relay and reversing contacts of said third relay in series with said make contacts for establishing a pair of alternate operating circuits for said coding means.
  • an electric typewriter provided with a keyboard, type bars on said typewriter having signal-responsive actuating means controllable by said keyboard, said type bars being provided with upper-case and lower-case characters, respectively, shift means for relatively displacing said carriage and said type bars into either of said positions, a shift key on said keyboard, coding means electrically controlled from said keyboard for registering on a recording medium a variety of character entries in addition to a lower-case entry and an upper-case entry respectively representative of said positions, switch means coupled with said shift key for selective displacement thereby into an upper-case position and a lower-case position, first circuit means controlled by said switch means and coupled to said shift means for enabling the printing of uppercase characters and of lower-case characters in said uppercase position and said lower-case position, respectively, normally unoperated second circuit means coupled to said coding means and momentarily operable by said first circuit means upon displacement of said
  • said first circuit means includes a first relay; switchover means for selectively connecting said first relay to a source of power by way of said switch means for energization in one of said positions thereof and by way of said decoding means for energization in response to one of said shift signals, said first relay being provided with locking contacts for completing a holding circuit therefor and with other contacts for the control of said shift means; said second and third circuit means including a normally deenergized second relay, first condenser means provided with a normally effective charging circuit and discharge able through said second relay by contacts of said first relay upon the energization of the latter for momentarily energizing said second relay, a normally de-energized third relay provided with an energizing circuit including make contacts of said first relay, said energizing circuit being selectively extendable by said switchover means to said switch means for completion in the other of said positions thereof and to said decoding means for completion in response to the other of said shift signals, said third relay having break contacts included in said

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Input From Keyboards Or The Like (AREA)
US154300A 1960-11-26 1961-11-22 Capital-shift mechanism for code printer Expired - Lifetime US3217854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEO0007760 1960-11-26

Publications (1)

Publication Number Publication Date
US3217854A true US3217854A (en) 1965-11-16

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Application Number Title Priority Date Filing Date
US154300A Expired - Lifetime US3217854A (en) 1960-11-26 1961-11-22 Capital-shift mechanism for code printer

Country Status (5)

Country Link
US (1) US3217854A (enrdf_load_stackoverflow)
CH (1) CH394257A (enrdf_load_stackoverflow)
DE (1) DE1411174B2 (enrdf_load_stackoverflow)
GB (1) GB1008873A (enrdf_load_stackoverflow)
SE (1) SE309994B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436735A (en) * 1966-09-01 1969-04-01 Sperry Rand Corp Keyboard operated repeat circuit for a data processing system's operator control unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640848C2 (de) * 1976-09-10 1983-02-10 Siemens AG, 1000 Berlin und 8000 München Anordnung zum Codieren und Decodieren von alphanumerischen Informationszeichen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378371A (en) * 1943-06-30 1945-06-12 Ibm Transcribing apparatus
US2390413A (en) * 1942-12-31 1945-12-04 Ibm Printing machine
US2859851A (en) * 1956-04-30 1958-11-11 Commercial Controls Corp Shift functions circuits
US2905299A (en) * 1957-05-24 1959-09-22 Underwood Corp Data recording device or devices and programming means therefor
US2905298A (en) * 1955-09-20 1959-09-22 Commercial Controls Corp Writing machine
US2980225A (en) * 1958-04-01 1961-04-18 Underwood Corp Apparatus to produce printed and control records and to utilize the latter for automatic control purposes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2390413A (en) * 1942-12-31 1945-12-04 Ibm Printing machine
US2378371A (en) * 1943-06-30 1945-06-12 Ibm Transcribing apparatus
US2905298A (en) * 1955-09-20 1959-09-22 Commercial Controls Corp Writing machine
US2859851A (en) * 1956-04-30 1958-11-11 Commercial Controls Corp Shift functions circuits
US2905299A (en) * 1957-05-24 1959-09-22 Underwood Corp Data recording device or devices and programming means therefor
US2980225A (en) * 1958-04-01 1961-04-18 Underwood Corp Apparatus to produce printed and control records and to utilize the latter for automatic control purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436735A (en) * 1966-09-01 1969-04-01 Sperry Rand Corp Keyboard operated repeat circuit for a data processing system's operator control unit

Also Published As

Publication number Publication date
DE1411174B2 (de) 1970-02-05
DE1411174A1 (de) 1968-10-03
GB1008873A (en) 1965-11-03
SE309994B (enrdf_load_stackoverflow) 1969-04-14
CH394257A (de) 1965-06-30

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