GB578822A - Delay-action locking or unlocking mechanism - Google Patents

Delay-action locking or unlocking mechanism

Info

Publication number
GB578822A
GB578822A GB11425/44A GB1142544A GB578822A GB 578822 A GB578822 A GB 578822A GB 11425/44 A GB11425/44 A GB 11425/44A GB 1142544 A GB1142544 A GB 1142544A GB 578822 A GB578822 A GB 578822A
Authority
GB
United Kingdom
Prior art keywords
plunger
bolt
time delay
ball
spring
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
GB11425/44A
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.)
Rotherham & Sons Ltd
Original Assignee
Rotherham & Sons 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 Rotherham & Sons Ltd filed Critical Rotherham & Sons Ltd
Priority to GB11425/44A priority Critical patent/GB578822A/en
Publication of GB578822A publication Critical patent/GB578822A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/025—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms mechanically actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D17/00—Parachutes
    • B64D17/40—Packs
    • B64D17/52—Opening, e.g. manual

Abstract

578,822. Time-delay locks. ROTHERHAM & SONS. Ltd., and LITCHFIELD, S. E. June 15, 1944, No. 11425. [Class 44] A time lag locking device to release parachutes, operate electric contacts or door locks, comprises a bolt 31 adapted for instance to engage the loop of a parachute and held retracted by a ball 30 which is released by a plunger 11 by means of a step 27 when the plunger has effected a predetermined movement under the influence of the time delay mechanism. When the bolt 31 is moved into locking position the ball 30 which is contained in a slot in the bolt is moved opposite a depression 35. The plunger 11 is then depressed against a spring 17 and the step 27 on the plunger forces the ball into the depression 35. The end of the plunger protrudes from the casing and is held in this position by a release pin. The plunger 11 is controlled by the time delay mechanism 22 by means of a gear train 21 and a rack 19 on the plunger, a free-wheel device allows depression of the plunger, for locking, without disturbing the time delay mechanism. To unlock the bolt the pin is withdrawn from the plunger which after a time delay, releases the ball and allows the bolt 31 to be projected by a spring 34 or if the spring abutment 16 is dispensed with, by the plunger spring 17. The time delay mechanism may be controlled by an escapement, wind vane or eddy current disc. A number of holes may be provided in the end of the plunger for the release pin in order that the apparatus may operate after different time intervals. A modification is shown in which the bolt 31 has a detent to hold the loop of a parachute.
GB11425/44A 1944-06-15 1944-06-15 Delay-action locking or unlocking mechanism Expired GB578822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11425/44A GB578822A (en) 1944-06-15 1944-06-15 Delay-action locking or unlocking mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11425/44A GB578822A (en) 1944-06-15 1944-06-15 Delay-action locking or unlocking mechanism

Publications (1)

Publication Number Publication Date
GB578822A true GB578822A (en) 1946-07-12

Family

ID=9985996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11425/44A Expired GB578822A (en) 1944-06-15 1944-06-15 Delay-action locking or unlocking mechanism

Country Status (1)

Country Link
GB (1) GB578822A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435584A1 (en) * 1978-09-07 1980-04-04 Sargent & Greenleaf TIMED LOCK WITH DRIVE ARM DRIVE ACTUATOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435584A1 (en) * 1978-09-07 1980-04-04 Sargent & Greenleaf TIMED LOCK WITH DRIVE ARM DRIVE ACTUATOR

Similar Documents

Publication Publication Date Title
GB1348563A (en) Lockers boxes or the like
GB1097958A (en) Container fastening device
GB578822A (en) Delay-action locking or unlocking mechanism
US3468502A (en) Parachute release device
GB940285A (en) Improvements in or relating to alarm clocks
GB1047077A (en) Apparatus for firing guns by means of strikers
US3500771A (en) Burglar-proof lock device
US3119248A (en) Receptacle for valuables
US2344348A (en) Handcuff
GB1274179A (en) Improvements in coin freed locks
GB1426372A (en) Coin operated lock
GB780285A (en) Improvements in time delay electric control devices
US2370213A (en) Intervalometer
GB588930A (en) Improvements in and relating to combination padlocks
GB1140823A (en) A keyless lock
GB611404A (en) Coin operated typewriter control apparatus
GB635915A (en) A combination lock
GB906706A (en) Improvements in or relating to measuring apparatus
GB1032478A (en) Timepiece alarm mechanism
GB590144A (en) Improvements in and relating to inertia switches
GB352982A (en) A machine for setting the timing of a fuze for a projectile
GB881116A (en) Coin operable release mechanism
GB795319A (en) Coin-controlled mechanism
GB782720A (en) Improvements in and relating to an alarum time-piece
GB930374A (en) Improvements in or relating to latch mechanisms