GB1218317A - Improvements in ratchet and pawl timing gear - Google Patents

Improvements in ratchet and pawl timing gear

Info

Publication number
GB1218317A
GB1218317A GB4428769A GB4428769A GB1218317A GB 1218317 A GB1218317 A GB 1218317A GB 4428769 A GB4428769 A GB 4428769A GB 4428769 A GB4428769 A GB 4428769A GB 1218317 A GB1218317 A GB 1218317A
Authority
GB
United Kingdom
Prior art keywords
pawl
ratchet
shaft
ratchet teeth
pawls
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
GB4428769A
Inventor
Walter Holzer
Konrad Laufer
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.)
Holzer Patent AG
Original Assignee
Holzer Patent AG
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 Holzer Patent AG filed Critical Holzer Patent AG
Publication of GB1218317A publication Critical patent/GB1218317A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time 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
    • H01H43/10—Time 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
    • H01H43/101—Driving mechanisms
    • H01H43/102—Driving mechanisms using a pawl and ratchet wheel mechanism

Landscapes

  • Transmission Devices (AREA)

Abstract

1,218,317. Ratchet mechanism. HOLZER PATENT A.G. 8 Sept., 1969 [12 Sept., 1968], No. 44287/69. Heading F2Q. A control cam disc 2 of a timing switch gear is driven by two pawls 22, 23 engaging two sets of ratchet teeth 5, 6, the ratchet teeth 5 being of even and relatively small pitch, for rotating the disc forward at equal intervals of time, and the ratchet teeth 6 being spaced apart in accordance with the lengths of time intervals between the individual switchings. The pawls 22, 23 are actuated by eccentrics 13, 14 mounted on a shaft 25 driven from a motor 1 through reduction gearing 17, 18, 19. A locking pawl 31 acts on teeth 5 to prevent back-running. In a modification shown in Fig. 4, pawl 23 has a slot 26 through which shaft 25 passes, and a follower 28 on pawl 23 is urged into engagement with a cam 27 on the shaft 25 by a spring 29.
GB4428769A 1968-09-12 1969-09-08 Improvements in ratchet and pawl timing gear Expired GB1218317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681775706 DE1775706B1 (en) 1968-09-12 1968-09-12 PROGRAM-CONTROLLED STEP CONTROL UNIT

Publications (1)

Publication Number Publication Date
GB1218317A true GB1218317A (en) 1971-01-06

Family

ID=5702680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4428769A Expired GB1218317A (en) 1968-09-12 1969-09-08 Improvements in ratchet and pawl timing gear

Country Status (3)

Country Link
DE (1) DE1775706B1 (en)
FR (1) FR2017936A1 (en)
GB (1) GB1218317A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467664A (en) * 1981-09-28 1984-08-28 The Singer Company Timer drive mechanism

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD21753A (en) *
GB545992A (en) * 1939-07-25 1942-06-23 Philco Radio & Television Corp Ratchet operated step-by-step mechanism
DE869282C (en) * 1942-11-18 1953-03-02 Sodeco Compteurs De Geneve Mechanism for transferring motion between two spindles, the first of which receives successive series of rotary motions
DE841904C (en) * 1951-01-25 1952-06-19 Seibt & Kapp Gmbh Maschf Device for the gradual rotation of the control shaft for the automatic control of the operating elements of a washing machine, in particular a series washing machine
DE1131309B (en) * 1956-03-08 1962-06-14 Metzenauer & Jung G M B H Program switching mechanism with stepping drive

Also Published As

Publication number Publication date
FR2017936A1 (en) 1970-05-22
DE1775706B1 (en) 1972-06-08

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