GB1516093A - Security device - Google Patents

Security device

Info

Publication number
GB1516093A
GB1516093A GB2662074A GB2662074A GB1516093A GB 1516093 A GB1516093 A GB 1516093A GB 2662074 A GB2662074 A GB 2662074A GB 2662074 A GB2662074 A GB 2662074A GB 1516093 A GB1516093 A GB 1516093A
Authority
GB
United Kingdom
Prior art keywords
door
bolt
chain
opened
cam
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
GB2662074A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2662074A priority Critical patent/GB1516093A/en
Publication of GB1516093A publication Critical patent/GB1516093A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/36—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing comprising a flexible member, e.g. chains
    • E05C17/365—Security chains

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

1516093 Door chain C D PRATT 9 Sept 1975 [15 June 1974 12 Feb 1975] 26620/74 and 5885/75 Heading E2A A security device which permits a door to open a slight amount only may be held out of operation by manually operated means on one side of the door or disengaged by key operated means on the other. When the door is opened by knob 38, cam 37 acts upon back-plate 28 of double bolt 24 and withdraws heads 27 from keepers 41. Bolt 19, however is not operated by cam 37 and may extend into shroud 13 under the influence of spring 19a when the door is opened sufficiently to free head 20 from engagement with portion 44. Opening the door brings head 20 into contact with the catch 47 on chain 46, trapping the catch in shroud 13. The chain 46 is anchored at its other end by a spring (not shown) and carries a stop (also not shown) which governs the extent to which the door may be opened. If however, peg 23 is inserted in hole 23a and thus brought into contact with indentation 22 in bolt 19, this bolt is held in the disengaged position and the door may be opened fully. The bolt may also be disengaged by turning lock 35, operating cam 34 which contacts both bolt 24 and flange 21 on bolt 19. In the embodiment illustrated in Fig. 5, the chain 46 passes over rollers 60, 61 held by screws in holes 62 extending into member 40 on the door-frame 43. By inverting member 40 and using holes 62a to hold the rollers 60, 61, the device may be adapted from use with a left-hand closing door to use with a right-hand closing.
GB2662074A 1975-09-09 1975-09-09 Security device Expired GB1516093A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2662074A GB1516093A (en) 1975-09-09 1975-09-09 Security device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2662074A GB1516093A (en) 1975-09-09 1975-09-09 Security device

Publications (1)

Publication Number Publication Date
GB1516093A true GB1516093A (en) 1978-06-28

Family

ID=10246504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2662074A Expired GB1516093A (en) 1975-09-09 1975-09-09 Security device

Country Status (1)

Country Link
GB (1) GB1516093A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580820A (en) * 1981-10-15 1986-04-08 Baber Murray J Security devices
GB2199610A (en) * 1986-03-14 1988-07-13 Alan Wordsworth Security bolt
GB2245307A (en) * 1990-06-22 1992-01-02 Kid Design Group Ltd Safety catch
GB2260564A (en) * 1991-10-17 1993-04-21 Securistyle Ltd A restricting device
GB2269626A (en) * 1992-08-13 1994-02-16 Ian Lindsay Haye Mure Security latch and automatic chain lock
US5647233A (en) * 1995-09-06 1997-07-15 Chung; Kuan-Chin Door locking mechanism

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580820A (en) * 1981-10-15 1986-04-08 Baber Murray J Security devices
GB2199610A (en) * 1986-03-14 1988-07-13 Alan Wordsworth Security bolt
GB2199610B (en) * 1986-03-14 1990-03-28 Alan Wordsworth Security bolt
GB2245307A (en) * 1990-06-22 1992-01-02 Kid Design Group Ltd Safety catch
GB2260564A (en) * 1991-10-17 1993-04-21 Securistyle Ltd A restricting device
GB2260564B (en) * 1991-10-17 1995-05-03 Securistyle Ltd A restricting device
GB2269626A (en) * 1992-08-13 1994-02-16 Ian Lindsay Haye Mure Security latch and automatic chain lock
US5647233A (en) * 1995-09-06 1997-07-15 Chung; Kuan-Chin Door locking mechanism

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Legal Events

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