GB1478028A - Electromechanical safety locking devices - Google Patents

Electromechanical safety locking devices

Info

Publication number
GB1478028A
GB1478028A GB2605674A GB2605674A GB1478028A GB 1478028 A GB1478028 A GB 1478028A GB 2605674 A GB2605674 A GB 2605674A GB 2605674 A GB2605674 A GB 2605674A GB 1478028 A GB1478028 A GB 1478028A
Authority
GB
United Kingdom
Prior art keywords
machine
bolt
door
lever
switch
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
GB2605674A
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.)
Condux Werk Herbert A Merges KG
Original Assignee
Condux Werk Herbert A Merges KG
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 Condux Werk Herbert A Merges KG filed Critical Condux Werk Herbert A Merges KG
Publication of GB1478028A publication Critical patent/GB1478028A/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
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/08—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
    • H01H27/007—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards the switch being lockable by remote control, e.g. by electromagnet

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Lock And Its Accessories (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

1478028 Releasable fastenings CONDUXWERK HERBERT A MERGES KG 12 June 1974 [13 June 1973] 26056/74 Heading E2A [Also in Division F2] An electromechanical safety locking device for an openable housing wall or door (not shown) of an electrically operated machine (not shown), having rotating parts (not shown), permits the door to be opened only after the drive motor (not shown) of the machine has been switched off and the rotating parts have come to a standstill, and further, prevents the machine being started until the door is properly closed. The locking device comprises a bolt 1 on the door and a sleeve 2 on the machine body, into which sleeve 2 the bolt 1 penetrates on closing the machine door, such movement of the bolt 1 initially lifting a spring-loaded locking rod 3, connected to pivot a bell-crank lever 12, and then additionally lifting a spring-loaded switch pin 4 connected by a bell-crank lever 11 to an on/off switch 10 of the machine, which lever 11 is initially prevented from moving to close the switch 10 by the bell-crank lever 12 which via the raised locking rod 3 blocks movement of the lever 11. On further i.e. full penetration of the bolt 1 into sleeve 2, for complete door closure, the locking rod 3 is spring-urged downward into a locking recess 14 in the bolt 1 to securely retain the bolt 1, which movement of the rod 3 raises the bell-crank lever 12 to release the bellcrank lever 11 which via the spring-loaded switch pin 4 snaps over to close the switch 10 to complete i.e. close a control circuit of the machine drive motor which can then be started. After the motor is switched off, a time relay (not shown) receives a pulse, the switching time of the relay being manually preselectable and set to a time greater than the time required for the rotating parts of the machine to stop, the arrangement being such that at the end of the relay switching time the contact of the time relay is closed to release a switch (not shown) to energise a solenoid 5 which via a pivoted lever 13 lifts the locking rod 3 free of the bolt 1 for the machine door to be opened.
GB2605674A 1973-06-13 1974-06-12 Electromechanical safety locking devices Expired GB1478028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2329964A DE2329964C3 (en) 1973-06-13 1973-06-13 Electromechanical safety interlock device

Publications (1)

Publication Number Publication Date
GB1478028A true GB1478028A (en) 1977-06-29

Family

ID=5883812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2605674A Expired GB1478028A (en) 1973-06-13 1974-06-12 Electromechanical safety locking devices

Country Status (6)

Country Link
US (1) US3915273A (en)
AT (1) AT338366B (en)
CH (1) CH577141A5 (en)
DE (1) DE2329964C3 (en)
FR (1) FR2233558B3 (en)
GB (1) GB1478028A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1513823A (en) * 1975-03-12 1978-06-14 Unimax Switch Ltd Safety device for guarded machinery
US4012063A (en) * 1975-11-26 1977-03-15 Ametek, Inc. Interlock latch assembly for centrifugals
NL182609C (en) * 1977-02-10 1988-04-05 Philips Nv VIDEO RECORD PLAYER.
US4379481A (en) * 1977-12-27 1983-04-12 North American Philips Corporation X-Ray apparatus and closure mechanism therefor
DE3242525A1 (en) * 1982-11-18 1984-05-24 Rheinmetall GmbH, 4000 Düsseldorf SECURITY DOOR LOCK
DE3476107D1 (en) * 1984-08-16 1989-02-16 Letzel Helmut Safety locking device for apparatus to prevent access to dangerous areas
USRE34396E (en) * 1984-08-16 1993-10-05 Helmut Letzel Safety interlock switching device for protecting equipment
DE3444325A1 (en) * 1984-12-05 1986-06-12 Rheinmetall GmbH, 4000 Düsseldorf LOCKING AND SECURITY DEVICE AND METHOD FOR THEIR OPERATION
FR2646074A1 (en) * 1989-04-24 1990-10-26 Ronic Ind Electric safety device controlled by lid of vessel in a food preparing apparatus
DE4015797A1 (en) * 1989-05-17 1990-12-06 Letzel Helmut Locking device for machine safety guard - uses sliding and rotatable switch shaft cooperating with magnet and switch device
US5131515A (en) * 1991-04-19 1992-07-21 Westlake Farms, Inc. Safety apparatus closure lock controlling access to rotational member
EP0645667A1 (en) * 1993-06-30 1995-03-29 Eastman Kodak Company Door safety system for storage phosphor cassette autoloader
AUPM409094A0 (en) * 1994-02-25 1994-03-24 Trimec Securities Pty. Limited Improvements in electromagnetic locks
AU676629B2 (en) * 1994-02-25 1997-03-13 Assa Abloy Australia Pty Limited Improvements in electromechanical locks
JP3339821B2 (en) * 1998-06-29 2002-10-28 新キャタピラー三菱株式会社 Work machine locking method and locking device
US7928330B2 (en) * 2006-09-29 2011-04-19 Rockwell Automation Limited Safety switch
EP1906421A3 (en) * 2006-09-29 2009-01-07 Eja Limited Safety Switch
CN101911235B (en) * 2008-01-29 2015-04-01 西门子公司 Safety switch having a hold-closed function for positive opening of contact elements, and method for positive opening of contact elements of a safety switch with a locking function
JP5527591B2 (en) * 2010-02-04 2014-06-18 Ｄｍｇ森精機株式会社 Machine Tools
DE102011004968B4 (en) * 2011-03-02 2014-07-10 Siemens Aktiengesellschaft Electric switch
US9184014B2 (en) * 2013-02-01 2015-11-10 General Electric Company Electrical operator for circuit breaker and method thereof
CN103640046A (en) * 2013-12-17 2014-03-19 上海贞元实业有限公司 Cutter locking circuit and cutter locking device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1837244A (en) * 1925-12-07 1931-12-22 Thomas S Watson Safety control for extractor covers and the like
US2738072A (en) * 1952-09-04 1956-03-13 Gen Electric Time controlled cover lock for clothes washers and the like
US3161273A (en) * 1963-05-07 1964-12-15 Krantz Aachen H Electronic monitor device for centrifuges
US3734290A (en) * 1971-10-20 1973-05-22 Maytag Co Latch mechanism
US3762552A (en) * 1971-10-20 1973-10-02 Maytag Co Motion sensing latch system

Also Published As

Publication number Publication date
ATA360374A (en) 1976-12-15
CH577141A5 (en) 1976-06-30
DE2329964A1 (en) 1975-01-09
FR2233558B3 (en) 1977-04-08
US3915273A (en) 1975-10-28
FR2233558A1 (en) 1975-01-10
DE2329964B2 (en) 1975-05-07
AT338366B (en) 1977-08-25
DE2329964C3 (en) 1975-12-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee