GB512157A - Improved alarum gun - Google Patents

Improved alarum gun

Info

Publication number
GB512157A
GB512157A GB871038A GB871038A GB512157A GB 512157 A GB512157 A GB 512157A GB 871038 A GB871038 A GB 871038A GB 871038 A GB871038 A GB 871038A GB 512157 A GB512157 A GB 512157A
Authority
GB
United Kingdom
Prior art keywords
weights
hand
alarum
gun
improved
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
GB871038A
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.)
JAMES HENDERSON FRASER
LESLIE WILKINSON HEWSON
Original Assignee
JAMES HENDERSON FRASER
LESLIE WILKINSON HEWSON
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 JAMES HENDERSON FRASER, LESLIE WILKINSON HEWSON filed Critical JAMES HENDERSON FRASER
Priority to GB871038A priority Critical patent/GB512157A/en
Publication of GB512157A publication Critical patent/GB512157A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
    • A01M29/16—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves
    • A01M29/20—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves with generation of periodically explosive reports

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Birds (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Air Bags (AREA)

Abstract

512,157. Detonator apparatus. FRASER, J. H., and HEWSON, L. W. Nov. 22, 1938, No. 8710. [Class 118 (ii)] In a bird-scaring apparatus of the type wherein a hand is rotated slowly to release, at intervals, weights 7 held in a disc 3 by pawls 6 which pass through slots (not shown), the weights falling upon strikers to fire blank cartridges, the hand or hands 15 that cause the weights to fall remain stationary until propelled forward by an auxiliary hand 17 driven by a clockwork motor.
GB871038A 1938-11-22 1938-11-22 Improved alarum gun Expired GB512157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB871038A GB512157A (en) 1938-11-22 1938-11-22 Improved alarum gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB871038A GB512157A (en) 1938-11-22 1938-11-22 Improved alarum gun

Publications (1)

Publication Number Publication Date
GB512157A true GB512157A (en) 1939-08-30

Family

ID=9857748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB871038A Expired GB512157A (en) 1938-11-22 1938-11-22 Improved alarum gun

Country Status (1)

Country Link
GB (1) GB512157A (en)

Similar Documents

Publication Publication Date Title
GB512157A (en) Improved alarum gun
CA398817A (en) Blasting detonator
CA394244A (en) Blasting explosive
CA397984A (en) Non-detonating blasting explosive
CH225809A (en) Impact detonator, in which the detonating needle is secured by centrifugal bodies that engage in a collar of the detonating needle and at the same time are prevented from diverging by a safety strap.
CA398838A (en) Blasting explosive composition
CA398875A (en) Blasting explosive composition
GB487103A (en) Toy-hand-grenade
CA378525A (en) Blasting explosive
AU251021B2 (en) Explosive actuated tools for driving studs or other fasteners
佐藤大七郎 Notes on the air temperature near forest floor
AU6350360A (en) Explosive actuated tools for driving studs or other fasteners
GB371717A (en) Improvements in cartridges for slaughtering pistols
CA398859A (en) Blasting ignition composition
CA378586A (en) Detonating stick for blasting
CA379553A (en) Blasting explosive
CA383258A (en) Blasting detonator
AU244924B2 (en) Explosive actuated tools for driving studs or other fastener elements
AU248104B2 (en) Explosive actuated tools for driving studs or other fastener elements
CA362022A (en) Blasting explosive cartridge
GB547835A (en) Hammers
GB369797A (en) Method of producing rockets especially for driving aircraft and model aircraft
CA400110A (en) Ammonium nitrate explosive composition
CA373339A (en) Gas hammer
AU243895B2 (en) Explosive actuated fastener driving tools