GB1210688A - A step-by-step advance device for programmers - Google Patents

A step-by-step advance device for programmers

Info

Publication number
GB1210688A
GB1210688A GB58380/67A GB5838067A GB1210688A GB 1210688 A GB1210688 A GB 1210688A GB 58380/67 A GB58380/67 A GB 58380/67A GB 5838067 A GB5838067 A GB 5838067A GB 1210688 A GB1210688 A GB 1210688A
Authority
GB
United Kingdom
Prior art keywords
cam
pawl
notch
follower
cam block
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
GB58380/67A
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.)
Thales Avionics SAS
Original Assignee
Crouzet SA
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 by Crouzet SA filed Critical Crouzet SA
Publication of GB1210688A publication Critical patent/GB1210688A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H29/00Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H31/00Other gearings with freewheeling members or other intermittently driving members
    • F16H31/003Step-by-step mechanisms for rotary motion
    • F16H31/004Step-by-step mechanisms for rotary motion with pawls driven by a rotary cam
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/10Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
    • H01H43/101Driving mechanisms
    • H01H43/102Driving mechanisms using a pawl and ratchet wheel mechanism
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/10Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
    • H01H43/12Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation
    • H01H43/121Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation using a drum

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

1,210,688. Variable-speed ratchet gear; detent brakes. CROUZET. 22 Dec., 1967 [23 Dec., 1966; 18 April, 1967], No. 58380/67. Headings F2D and F2E. [Also in Division H1] An intermittent drive for a domestic washing machine programmer having a block 6 of rotary cams to actuate electrical contacts comprises a variable-speed ratchet gear having a continuously rotating input member 7 coaxial with the cam block 6 and carrying a pawl 12 which orbits round a ratchet wheel 6a integral with the cam block 6, movement of the pawl 12 into and out of driving engagement with the ratchet wheel 6a being controlled by a fixed cam 13 having a generally circular internal cam surface 13c coaxial with the input member 7. Input member 7 and cam block 6 are freely rotatable on a fixed shaft 5, and serve to axially locate the fixed cam 13. The cam block 6 is held against rotation between drive steps by a detent device comprising a crown wheel 10 keyed to the cam block 6 and urged by a spring 11 into engagement with a fixed crown wheel 9. In Figs. 1, 2, the pawl 12, on a pivot pin 7a, includes a cam follower 12c and a resilient tail 12b bearing on an annular surface 6b of the cam block. When the follower 12c enters a notch 13d or 13e of the fixed cam 13, the pawl nose 12a briefly engages the ratchet wheel 6a to advance it one step. A spring 13g urges a mask 14b on an arm 14 pivoted at 4 into a position masking the notch 13e, a cam 6d on the cam block 6 acting on a follower 14a to move the mask 14b clear of the notch 13e during parts of the programme cycle to double the speed of the cam block. More than one notch 13e may be used, notches 13d, 13e being equally spaced round the surface 13c. A mask 15a on the armature 15 of a solenoid 16 masks the notch 13d when a thermostat energizes the solenoid, to prevent drive to the cam block 6 when a temperature is not at a required value. In Fig. 4 (not shown) the pawl (12) is resiliently cantilevered from a stud (7<SP>1</SP>a) on the input member (7) by means of its tail (12b), the follower (12c) and nose (12a) being formed on the free end of the tail (12b). Parts (15a) of armature (15) and (14b) of arm (14) form retractable projections on the cam surface (13c) which act on the follower (12c) to cause the pawl nose (12a) to engage the ratchet wheel. In Fig. 5 (not shown) the pawl has no resilient part and is positively controlled. A second follower (12<SP>11</SP>c) on the pawl engages a projection (17a) on one end of a centrally pivoted lever (17) to force the first follower (12<SP>1</SP>c) into the notch (13d). A mask (17b) for the notch (13d) is formed on the other end of the lever (17), which is pivoted to the armature (15). Similarly the arm (14<SP>1</SP>) carries a projection (14<SP>1</SP>b) which acts in conjunction with a notch (13<SP>1</SP>f). In a three-speed ratchet gear, Fig. 6, cams 6d, 6<SP>1</SP>d, S<SP>11</SP>d act on a follower 24a to move a forked member 24 transversely of the fixed cam 13. In a first position, notches 13e, 13e<SP>1</SP>, 13e<SP>11</SP> are masked by the member 24. In a second position, as shown, the notch 13e is uncovered, and in a third position pins 27, 28 cam the arms of member 24 apart so that notches 13e<SP>1</SP>, 13e<SP>11</SP> are also uncovered. Pins 25-27 guide the member 24. The tail 12b of the pawl engages an abutment 7b on the input member 7. In Fig. 7 (not shown) ratchet teeth (6a) are formed on the inner surface of cam drum (6), and a separate, centrally pivoted resilient member acts on the pawl to urge it against the fixed cam surface 13c.
GB58380/67A 1966-12-23 1967-12-22 A step-by-step advance device for programmers Expired GB1210688A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7380A FR1533219A (en) 1966-12-23 1966-12-23 New step-by-step advance device applicable to programmers, in particular for washing machines
FR746A FR93558E (en) 1966-12-23 1967-04-18 New step-by-step advance device applicable to programmers, in particular for washing machines.

Publications (1)

Publication Number Publication Date
GB1210688A true GB1210688A (en) 1970-10-28

Family

ID=26235356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB58380/67A Expired GB1210688A (en) 1966-12-23 1967-12-22 A step-by-step advance device for programmers

Country Status (3)

Country Link
DE (1) DE1588119C2 (en)
FR (2) FR1533219A (en)
GB (1) GB1210688A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2510816C2 (en) * 1975-03-12 1978-10-28 Siemens Ag PROGRAM SWITCH DEVICE, ESPECIALLY FOR WASHING MACHINE
DE2655540C2 (en) * 1975-12-10 1982-02-18 Syntronic AG, Mauren "Time program switch, especially for washing, dishwashing and drying machines"
FR2662849B1 (en) * 1990-06-01 1992-08-07 Esswein Sa ELECTROMECHANICAL PROGRAMMER WITH SOFT PROGRAM PRESET.
FR2663459B1 (en) * 1990-06-19 1992-10-02 Sextant Avionique PROGRAMMER WITH TIMING CAM.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE633680A (en) * 1962-06-15 Candy
BE633681A (en) * 1962-06-16
FR1381190A (en) * 1963-02-06 1964-12-04 Saia Ag Program switch

Also Published As

Publication number Publication date
DE1588119C2 (en) 1974-11-21
DE1588119B1 (en) 1971-10-07
FR93558E (en) 1969-04-18
FR1533219A (en) 1968-07-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee