GB1237976A - - Google Patents

Info

Publication number
GB1237976A
GB1237976A GB1237976DA GB1237976A GB 1237976 A GB1237976 A GB 1237976A GB 1237976D A GB1237976D A GB 1237976DA GB 1237976 A GB1237976 A GB 1237976A
Authority
GB
United Kingdom
Prior art keywords
wheel
ratchet
pawl
engagement
pawl arm
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
Application number
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 filed Critical
Publication of GB1237976A publication Critical patent/GB1237976A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H31/00—Other gearings with freewheeling members or other intermittently driving members
    • F16H31/003—Step-by-step mechanisms for rotary motion
    • F16H31/005—Step-by-step mechanisms for rotary motion with pawls driven by a reciprocating or oscillating transmission member
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/18—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier being longitudinally extended, e.g. punched tape
    • G06K13/20—Details
    • G06K13/22—Capstans; Pinch rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element
    • Y10T74/1556—Multiple acting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Advancing Webs (AREA)

Abstract

1,237,976. Selective printing. EXTEL CORP. 21 March, 1969 [21 March, 1968], No. 15051/69. Heading B6F. A feeding device for intermittently advancing a tape, web or film comprises a rotary feed member 40 having friction roller or pin wheel 20 and a ratchet-wheel 21. Positive drive means, comprising a reversible stalling electric motor (13, Fig. 1) and a spring (16), rotatably urges the rotary feed member 40 in a given direction (clockwise or anticlockwise), the amount of rotation being governed by an escapement mechanism. This mechanism comprises the ratchet-wheel 21 and a single pawl member 25 having first and second pawl arms alternately engageable with the teeth of the ratchet wheel. One or each pawl arm has one tooth engaging surface 41, 44 which prevents movement of the ratchet-wheel, and another tooth engaging surface 42, 43 which receives a driving force from one of the ratchet-wheel teeth, as the rotary feed member rotates, to move the other pawl arm back into engagement with the ratchet-wheel. In operation, electromagnetic means momentarily actuates the pawl member 25 to move a first (motion preventing) pawl arm out of engagement with the ratehetwheel 21, whereby the second arm moves into engagement therewith. Rotation of the ratchetwheel then moves the second pawl arm out of engagement with the teeth, whereby the first pawl arm is moved back into blocking engagement with the ratchet-wheel, thereby completing an increment of feed. In one embodiment, Fig. 2, the electromagnetic actuating means comprises a single magnet 31 with a pivoted armature 32 plus a return spring 29. In an alternative embodiment (Fig. 5), a magnet is provided on each side of the pivoted armature 32. The feeding device is suitable for a tape perforator, tape reader or telegraph recorder. Two feed wheels may be spaced an appreciable distance apart to advance a sheet of paper in a typewriter, teleprinter or accounting machine.
GB1237976D 1968-03-21 1969-03-21 Expired GB1237976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71506368A 1968-03-21 1968-03-21

Publications (1)

Publication Number Publication Date
GB1237976A true GB1237976A (en) 1971-07-07

Family

ID=24872526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1237976D Expired GB1237976A (en) 1968-03-21 1969-03-21

Country Status (2)

Country Link
US (1) US3504558A (en)
GB (1) GB1237976A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626452A (en) * 1970-01-14 1971-12-07 Cutler Hammer Inc Multiposition bidirectional rotary means for a switch or the like
DE3126038A1 (en) * 1981-07-02 1983-01-20 Philips Patentverwaltung Gmbh, 2000 Hamburg DEVICE FOR TURNING A SUN BLADE INCLUDED IN AN EVACUATED GLASS TUBE
JP3940319B2 (en) * 2002-06-05 2007-07-04 株式会社ジェイテクト Shock absorbing steering device
PL405646A1 (en) * 2013-10-15 2015-04-27 Centrum Badań Kosmicznych Polskiej Akademii Nauk Mechanism controlling the course of rotational motion, method for controlling the course of rotational motion, and the geared escape wheel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US810780A (en) * 1901-12-24 1906-01-23 Wladimir Lorenc Power-transmitter.
US1128922A (en) * 1914-05-12 1915-02-16 Jasper J Walk Automobile driving mechanism.
US1150483A (en) * 1914-05-25 1915-08-17 Albert E Barber Shaft-coupling.
US1979028A (en) * 1932-10-20 1934-10-30 Teleregister Corp Pawl and ratchet mechanism
US2530961A (en) * 1947-07-19 1950-11-21 Bell Telephone Labor Inc Stepping device
US2586040A (en) * 1949-11-21 1952-02-19 White & Co Ltd Samuel Ratchet gearing
US2868026A (en) * 1957-08-22 1959-01-13 Mallory & Co Inc P R Intermittent driving mechanism

Also Published As

Publication number Publication date
US3504558A (en) 1970-04-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees