GB881447A - Method of producing floats for buoying fishing nets - Google Patents

Method of producing floats for buoying fishing nets

Info

Publication number
GB881447A
GB881447A GB28428/60A GB2842860A GB881447A GB 881447 A GB881447 A GB 881447A GB 28428/60 A GB28428/60 A GB 28428/60A GB 2842860 A GB2842860 A GB 2842860A GB 881447 A GB881447 A GB 881447A
Authority
GB
United Kingdom
Prior art keywords
float
hole
pressure
shells
fishing
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
GB28428/60A
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.)
Karl Schmidt GmbH
Original Assignee
Karl Schmidt GmbH
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 Karl Schmidt GmbH filed Critical Karl Schmidt GmbH
Publication of GB881447A publication Critical patent/GB881447A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
    • A01K75/04—Floats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects

Abstract

881,447. Fishing-floats. SCHMIDT G.m.b.H., KARL. Aug. 16, 1960 [Aug. 24, 1959], No. 28428/60. Class 48. [Also in Groups XXII and XXVIII] A float for a fishing- net is made by assembling two pressure diecast hemispherical shells in an airtight manner and reducing the pressure inside the float so that the pressure of air or water on the outside of the float holds the shells together. The abutting edges of the shells may have tongues and grooves and rubber or plastic rings may be inserted in the grooves. The reduced pressure inside the float may be produced by assembling the hemispheres when hot, the subsequent cooling reducing the pressure; alternatively air is withdrawn through a tapered hole in one of the hemispheres by a pump and the hole is then plugged. The latter method is facilitated by the apparatus shown which comprises a head 3 connected to a pump by a pipe 6 and having an opening 4 which is placed over the hole 2 in the hemisphere. When the desired vacuum has been attained a plug 8 from a magazine 7 in the head 3 is tapped by an electromagnet 9 into the hole 2.
GB28428/60A 1959-08-24 1960-08-16 Method of producing floats for buoying fishing nets Expired GB881447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE881447X 1959-08-24

Publications (1)

Publication Number Publication Date
GB881447A true GB881447A (en) 1961-11-01

Family

ID=6830026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28428/60A Expired GB881447A (en) 1959-08-24 1960-08-16 Method of producing floats for buoying fishing nets

Country Status (1)

Country Link
GB (1) GB881447A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107814495A (en) * 2017-12-06 2018-03-20 国家海洋技术中心 Deep-sea is pressure-resistant glass ball float vacuum package device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107814495A (en) * 2017-12-06 2018-03-20 国家海洋技术中心 Deep-sea is pressure-resistant glass ball float vacuum package device
CN107814495B (en) * 2017-12-06 2024-03-22 国家海洋技术中心 Deep sea pressure-resistant glass float vacuum packaging device

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