GB821948A - Improvements in and relating to ratchet and pawl mechanisms - Google Patents

Improvements in and relating to ratchet and pawl mechanisms

Info

Publication number
GB821948A
GB821948A GB36644/55A GB3664455A GB821948A GB 821948 A GB821948 A GB 821948A GB 36644/55 A GB36644/55 A GB 36644/55A GB 3664455 A GB3664455 A GB 3664455A GB 821948 A GB821948 A GB 821948A
Authority
GB
United Kingdom
Prior art keywords
wheel
ratchet
tooth
pawl
solenoid
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
GB36644/55A
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.)
NSF Ltd
Original Assignee
NSF Ltd
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 NSF Ltd filed Critical NSF Ltd
Priority to GB36644/55A priority Critical patent/GB821948A/en
Publication of GB821948A publication Critical patent/GB821948A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
    • H01H51/082—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism
    • 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

Abstract

821,948. Ratchet gearing. N.S.F. Ltd. (Oak Mfg. Co.). Dec. 21, 1955, No. 36644/55. Class 80 (3). [Also in Group XXXVII] A pawl-and-ratchet mechanism for driving rotary electric switches (Figs. 1, 2, not shown) step-by-step upon successive energizations of a rotary solenoid having limited angular movement and which may be constructed as disclosed in Specification 602,812, [Group XXXVII], is provided with means to prevent overshooting of the ratchet-wheel each time it is advanced one step by the pawl. Energization of the solenoid (Fig. 4, not shown) causes counter-clockwise movement of a shaft 12 carrying a drive yoke 22, a slot 24 in the yoke receiving a downwardly-extending finger 73 of a plate 57 mounted for sliding movement in the direction of its length, whereby the plate moves to the position shown in Fig. 5. The plate 57 pivotally carries on a pin 61 a two-armed pawl 64 having a tooth 65 for driving the ratchet-wheel 54 and a tooth 66 serving as a detent by engaging the side of the ratchet teeth. On de-energization of the solenoid the tooth 65 slips over the wheel and the detent 66 moves away from the wheel under the action of a restoring spring (not shown). Energization of the solenoid causes the tooth 65 to advance the wheel 54 one step, the detent 66 preventing rotation of the wheel beyond this amount. A spring 68 biases the pawl against the ratchet wheel and the latter is mounted on a stub-shaft 50 driving the electric switches.
GB36644/55A 1955-12-21 1955-12-21 Improvements in and relating to ratchet and pawl mechanisms Expired GB821948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB36644/55A GB821948A (en) 1955-12-21 1955-12-21 Improvements in and relating to ratchet and pawl mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36644/55A GB821948A (en) 1955-12-21 1955-12-21 Improvements in and relating to ratchet and pawl mechanisms

Publications (1)

Publication Number Publication Date
GB821948A true GB821948A (en) 1959-10-14

Family

ID=10389966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36644/55A Expired GB821948A (en) 1955-12-21 1955-12-21 Improvements in and relating to ratchet and pawl mechanisms

Country Status (1)

Country Link
GB (1) GB821948A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113871244A (en) * 2021-08-13 2021-12-31 天津平高智能电气有限公司 Three-station operating mechanism and three-station switch
CN116969130A (en) * 2023-09-21 2023-10-31 原平市兴胜机械制造有限公司 Tensioning assembly of conveyor and conveyor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113871244A (en) * 2021-08-13 2021-12-31 天津平高智能电气有限公司 Three-station operating mechanism and three-station switch
CN113871244B (en) * 2021-08-13 2023-09-01 天津平高智能电气有限公司 Three-station operating mechanism and three-station switch
CN116969130A (en) * 2023-09-21 2023-10-31 原平市兴胜机械制造有限公司 Tensioning assembly of conveyor and conveyor
CN116969130B (en) * 2023-09-21 2023-12-15 原平市兴胜机械制造有限公司 Tensioning assembly of conveyor and conveyor

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