GB1302072A - - Google Patents

Info

Publication number
GB1302072A
GB1302072A GB2881270A GB2881270A GB1302072A GB 1302072 A GB1302072 A GB 1302072A GB 2881270 A GB2881270 A GB 2881270A GB 2881270 A GB2881270 A GB 2881270A GB 1302072 A GB1302072 A GB 1302072A
Authority
GB
United Kingdom
Prior art keywords
pawl
armature
ratchet wheel
pawl element
june
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
GB2881270A
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 GB1302072A publication Critical patent/GB1302072A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • 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
    • 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
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • 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
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • Y10T74/2136—Pivoted pawls
    • Y10T74/214—Multiple tooth

Abstract

1302072 Ratchet mechanism MOTOROLA Inc 15 June 1970 [17 June 1969] 28812/70 Heading F2Q A double pawl mechanism for transforming reciprocating motion of an armature 31 into stepped rotary motion of a ratchet wheel 35 comprises a unitary pawl element 33 made of resilient plastic or metal material of substantially rectangular or square shape and having a pair of pawls 36, 37 adapted to engage the ratchet wheel 35 which is disposed in an opening in the centre of the pawl element 33. The armature 31 is moved in one direction by energization of a solenoid 29, and is returned by a spring 32, the pawl element 33 being secured to the end of the armature 31. The ratchet wheel 35 has four teeth 43. Movement of armature 31 to the left from the position shown in Fig. 3 causes a rotation of 45 degrees of the ratchet wheel 35 due to engagement of pawl 36 with the top tooth 43. A further 45 degree rotation is effected by the engagement of pawl 37 with the bottom tooth 43 on the return stroke. A locking surface 46 on the pawl element 33 prevents overrunning and a projection 51 prevents backrunning of the racthet wheel. The mechanism operates a cam 20 for positioning a magnetic tape head 12 in a multi-track cartridge-type tape player.
GB2881270A 1969-06-17 1970-06-15 Expired GB1302072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83407669A 1969-06-17 1969-06-17

Publications (1)

Publication Number Publication Date
GB1302072A true GB1302072A (en) 1973-01-04

Family

ID=25266046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2881270A Expired GB1302072A (en) 1969-06-17 1970-06-15

Country Status (4)

Country Link
US (1) US3636782A (en)
CA (1) CA946182A (en)
ES (1) ES380833A1 (en)
GB (1) GB1302072A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839735A (en) * 1972-10-13 1974-10-01 Newell Ind Transducer head positioning device
JPS5736574Y2 (en) * 1976-05-04 1982-08-12
US4383453A (en) * 1979-12-19 1983-05-17 Contraves Ag Stepping mechanism
US4448194A (en) * 1982-02-03 1984-05-15 Ethicon, Inc. Full stroke compelling mechanism for surgical instrument with drum drive

Also Published As

Publication number Publication date
DE2029097A1 (en) 1971-04-15
US3636782A (en) 1972-01-25
CA946182A (en) 1974-04-30
ES380833A1 (en) 1972-09-16
DE2029097B2 (en) 1972-08-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee