GB579070A - Improvements in and relating to fuzes for bombs, land mines, marine mines and the like - Google Patents

Improvements in and relating to fuzes for bombs, land mines, marine mines and the like

Info

Publication number
GB579070A
GB579070A GB3243337A GB3243337A GB579070A GB 579070 A GB579070 A GB 579070A GB 3243337 A GB3243337 A GB 3243337A GB 3243337 A GB3243337 A GB 3243337A GB 579070 A GB579070 A GB 579070A
Authority
GB
United Kingdom
Prior art keywords
gear train
spring
pin
disc
fuzes
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
GB3243337A
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.)
RUSSELL PURVES
Original Assignee
RUSSELL PURVES
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 RUSSELL PURVES filed Critical RUSSELL PURVES
Priority to GB3243337A priority Critical patent/GB579070A/en
Publication of GB579070A publication Critical patent/GB579070A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/06—Electric fuzes with time delay by electric circuitry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • 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
    • G04F3/027—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 using electrical contacts, e.g. for actuating electro-acoustic device

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

579,070. Clockwork bomb fuzes. CLARKSON, G. T., and PURVES, R. Nov. 25, 1937, No. 32433. [Classes 9 (i) and 9 (ii)] To obviate audible ticking, electrically or mechanically-fired clockwork fuzes for bombs and land and sea mines have the time interval controlled by an electro-magnetic brake in which eddy currents are produced in a disc or cylinder rotating in a magnetic field. Fig. 1 shows the invention applied to an electricallyfired time fuze for a bomb to be dropped from aircraft. The last wheel g of the gear train driven by the clock-spring drives a disc i of aluminium, silver or copper in the magnetic field between iron or steel polepieces k, t. A switch m driven by reduction gear n from the clockwork train operates after an adjustable time to close the firing circuit through a safety switch r, dry cell wand an electric detonator x. The gear train is started by removing an obstruction-pin q controlled by a spring-pressed cap p which rises when the usual arming vane withdraws the screw y or when a soluble plug is dissolved in the case. of a marine mine. The cup p carries a C-shaped strip of conducting material s which expands into a recess and joins conducting rings z in the firing circuit. In a mechanically-fired fuze having a spring striker, a clock-spring drives a gear train for rotating a damping disc as before, and also a second gear train for rotating a second disc carrying a cam for operating a slide to release a spring-controlled striker for the detonator. The striker spring is cocked in known manner by a weight which moves forward on impact. The gear train is started by the removal of an obstruction-pin when the usual safety pin is withdrawn at the moment of release of the bomb from the aircraft. The obstruction-pin may be removed to start the gear train by inertia on impact.
GB3243337A 1937-11-25 1937-11-25 Improvements in and relating to fuzes for bombs, land mines, marine mines and the like Expired GB579070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3243337A GB579070A (en) 1937-11-25 1937-11-25 Improvements in and relating to fuzes for bombs, land mines, marine mines and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3243337A GB579070A (en) 1937-11-25 1937-11-25 Improvements in and relating to fuzes for bombs, land mines, marine mines and the like

Publications (1)

Publication Number Publication Date
GB579070A true GB579070A (en) 1939-07-23

Family

ID=10338532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3243337A Expired GB579070A (en) 1937-11-25 1937-11-25 Improvements in and relating to fuzes for bombs, land mines, marine mines and the like

Country Status (1)

Country Link
GB (1) GB579070A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965381C (en) * 1952-03-26 1957-06-06 Bofors Ab The clockwork ignition can be started by striking it in water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965381C (en) * 1952-03-26 1957-06-06 Bofors Ab The clockwork ignition can be started by striking it in water

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