GB499496A - Improvements relating to electric switches for use in alternating current circuits - Google Patents
Improvements relating to electric switches for use in alternating current circuitsInfo
- Publication number
- GB499496A GB499496A GB20508/37A GB2050837A GB499496A GB 499496 A GB499496 A GB 499496A GB 20508/37 A GB20508/37 A GB 20508/37A GB 2050837 A GB2050837 A GB 2050837A GB 499496 A GB499496 A GB 499496A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- roller
- spring
- contact
- contacts
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/28—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with three operating positions
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
499,496. Tumbler switches. TUCKER & CO., Ltd., J. H., and FUKE, F. C. July 24, 1937, No. 20508. [Class 38 (v)] A tumbler switch has means whereby a movable contact is caused to take a period of rest after a small initial movement and before its final complete separation from the fixed contact to minimize sparking in A.C. circuits. A dolly l operates through gearing l<1>, k<5> and a quick action spring m, a cam k which has a step k<3> joining two surfaces k<1>, k<2> whose profiles are arcs of circles concentric with the pivot of the cam k. Contacts j<1>, j<2> are held together by the engagement of the cam edge k<1> with a roller j<3> on a spring contact member j. With rotation of the cam k, the roller j<3> first moves up to engage the cam edge k<2> and open the contacts j<1>, j<2> a short distance, and then moves a much greater distance on engaging cam edge k<4> to complete the contact separation. Fig. 1 shows a two way switch wherein a stepped cam surface on each of two spring contact members b, d is engaged by a roller c<1>, c<4> on a lever c which is moved with a snap action by a lever operated spring loaded toggle mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20508/37A GB499496A (en) | 1937-07-24 | 1937-07-24 | Improvements relating to electric switches for use in alternating current circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20508/37A GB499496A (en) | 1937-07-24 | 1937-07-24 | Improvements relating to electric switches for use in alternating current circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
GB499496A true GB499496A (en) | 1939-01-24 |
Family
ID=10147044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20508/37A Expired GB499496A (en) | 1937-07-24 | 1937-07-24 | Improvements relating to electric switches for use in alternating current circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB499496A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2725438A (en) * | 1952-09-15 | 1955-11-29 | Arrow Hart & Hegeman Electric | Alternating current switch mechanism |
US2773956A (en) * | 1953-10-21 | 1956-12-11 | Arrow Hart & Hegeman Electric | Front operated disconnect switch |
FR2864690A1 (en) * | 2003-12-24 | 2005-07-01 | Legrand Sa | Electrical device e.g. interrupter, for opening or closing electric circuit, has button sub-assembly with spring to activate driving rod towards carrier, and activation motor with spring to activate driving rod towards button |
DE102008057148A1 (en) * | 2008-11-13 | 2010-05-27 | Schaltbau Gmbh | Railroad toggle |
EP3157035A1 (en) * | 2015-10-12 | 2017-04-19 | ABB Schweiz AG | Switching device with a contact system |
-
1937
- 1937-07-24 GB GB20508/37A patent/GB499496A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2725438A (en) * | 1952-09-15 | 1955-11-29 | Arrow Hart & Hegeman Electric | Alternating current switch mechanism |
US2773956A (en) * | 1953-10-21 | 1956-12-11 | Arrow Hart & Hegeman Electric | Front operated disconnect switch |
FR2864690A1 (en) * | 2003-12-24 | 2005-07-01 | Legrand Sa | Electrical device e.g. interrupter, for opening or closing electric circuit, has button sub-assembly with spring to activate driving rod towards carrier, and activation motor with spring to activate driving rod towards button |
DE102008057148A1 (en) * | 2008-11-13 | 2010-05-27 | Schaltbau Gmbh | Railroad toggle |
DE102008057148B4 (en) * | 2008-11-13 | 2011-01-05 | Schaltbau Gmbh | Railroad toggle |
US8178809B2 (en) | 2008-11-13 | 2012-05-15 | Schaltbau Gmbh | Railroad toggle switch |
EP2187415A3 (en) * | 2008-11-13 | 2013-08-07 | Schaltbau GmbH | Tumbler switch |
EP3157035A1 (en) * | 2015-10-12 | 2017-04-19 | ABB Schweiz AG | Switching device with a contact system |
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