GB336551A - Harpoon for killing whale and other sea animals by electricity - Google Patents

Harpoon for killing whale and other sea animals by electricity

Info

Publication number
GB336551A
GB336551A GB11173/30A GB1117330A GB336551A GB 336551 A GB336551 A GB 336551A GB 11173/30 A GB11173/30 A GB 11173/30A GB 1117330 A GB1117330 A GB 1117330A GB 336551 A GB336551 A GB 336551A
Authority
GB
United Kingdom
Prior art keywords
harpoon
cable
head
attached
slot
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
GB11173/30A
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.)
BIRGER HOLM HANSEN
Original Assignee
BIRGER HOLM HANSEN
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 BIRGER HOLM HANSEN filed Critical BIRGER HOLM HANSEN
Publication of GB336551A publication Critical patent/GB336551A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/14—Harpoons

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Catching Or Destruction (AREA)
  • Fodder In General (AREA)

Abstract

336,551. Hansen, B. Hohn-. April 8, 1929, [Convention date]. Harpoons.-An electrical conductor is attached to an harpoon for electrocuting whales. As shown in Fig. 2 the insulated cable 1 may be attached to a metal rod 2 which extends through the shaft 3 to the head 4. The shaft has an open slot 5 in which the cable 1 is placed when the harpoon is to be discharged from a gun. As shown in Fig. 4 the cable 1 is attached to a sliding contact at the front part of the slot 8. During the discharge the contact slides back along the slot 8 and automatically closes the circuit to the head of the harpoon when it reaches a contact socket 10. As shown in Fig. 8 the cable 1 is connected through the head of the harpoon which is formed with a spiral-shaped groove to increase the contact surface. In a further modification the cable is wound inside the harpoon head from which it unwinds as the harpoon is discharged.
GB11173/30A 1929-04-08 1930-04-08 Harpoon for killing whale and other sea animals by electricity Expired GB336551A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO53344T 1929-04-08
NO53532T 1929-05-25

Publications (1)

Publication Number Publication Date
GB336551A true GB336551A (en) 1930-10-16

Family

ID=26647556

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11173/30A Expired GB336551A (en) 1929-04-08 1930-04-08 Harpoon for killing whale and other sea animals by electricity
GB15689/30A Expired GB342627A (en) 1929-04-08 1930-05-21 Harpoon for killing whale and other sea animals by electricity

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15689/30A Expired GB342627A (en) 1929-04-08 1930-05-21 Harpoon for killing whale and other sea animals by electricity

Country Status (2)

Country Link
GB (2) GB336551A (en)
NO (2) NO53532A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531418A (en) * 1947-05-13 1950-11-28 Fitzharris Edward Jet casting arrow

Also Published As

Publication number Publication date
NO53344A (en)
GB342627A (en) 1931-02-05
NO53532A (en)

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