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  2. W Dowler & Sons - Wikipedia

    en.wikipedia.org/wiki/W_Dowler_&_Sons

    " International" and "International police whistle " (brand name for Dowler cheaper GSW model.) The First Dated Army whistle (1894) appears on a Dowler GSW. Very rare whistles of 1894 Registered design are stamped on the body: "'Hiat' constabulary Reg. design No.225730 " with insignia of Devon Constabulary, Cambridgeshire Borough Police and ...

  3. Joseph Hudson (inventor) - Wikipedia

    en.wikipedia.org/wiki/Joseph_Hudson_(inventor)

    Joseph Hudson (1848–1930) was an inventor in Birmingham, England during the late 19th century and the founder of J Hudson & Co in 1870, later to become the world largest whistle manufacturer . Hudson entered a competition held by the Metropolitan police force in London in 1883 to design a

  4. J Hudson & Co - Wikipedia

    en.wikipedia.org/wiki/J_Hudson_&_Co

    After a demonstration at Scotland Yard, Hudson had his first sale. This 1884 contract with the police gradually made Hudson the largest whistle manufacturer for British Empire police forces, military, sports, railways and many others. By the 1890s, Hudson faced the rise of many competitor makers and companies.

  5. List of equipment of the Philippine National Police - Wikipedia

    en.wikipedia.org/wiki/List_of_equipment_of_the...

    Police Security and Protection Group, [15] [16] Sorsogon Police Provincial Office, and Butuan City Police Office [12] Kawasaki Versys 1000 Japan: police motorcycle: Used by PNP-Highway Patrol Group since 2020. [17] and Police Security and Protection Group BYD Dolphin China: police car: Used by Valenzuela City since 2024. [18] Hyundai Elantra ...

  6. Henry Arthur Ward - Wikipedia

    en.wikipedia.org/wiki/Henry_Arthur_Ward

    Escargot-type whistles ; H A Ward may have made the First model of the famous "Thunderer" London style whistle, later to be become popular by with numerous whistle manufacturers until J Hudson and co. were granted the registered trade mark at 1927 after years of legal fights and claims. Only one London style of H A Ward 'Thunderer' had been seen.

  7. Physics of whistles - Wikipedia

    en.wikipedia.org/wiki/Physics_of_whistles

    This whistle is essentially the police whistle turned into a torus, magnifying its sound-making potential. A cross-section through the middle of the whistle is shown in the figure on the right. An annular duct carries the fluid that creates the annular jet. The jet impinges on a sharp ended ring with two toroidal cavities on either side.

  8. National Capital Region Police Office - Wikipedia

    en.wikipedia.org/wiki/National_Capital_Region...

    On January 3, 2025, 2,264 intelligence officers from the National Capital Region Police Office (NCRPO) in the Philippines underwent drug testing, with all results returning negative. NCRPO chief Brig. Gen. Anthony Aberin stated that the outcome underscores the commitment to maintaining the integrity of intelligence officers, who play a crucial ...

  9. Philippine Constabulary Metropolitan Command - Wikipedia

    en.wikipedia.org/wiki/Philippine_Constabulary...

    On July 8, 1974, President Marcos issued Presidential Decree No. 421, making MetroCom the basis for a regional police command for the future Metro Manila region. [3] All local police departments within the capital area were joined under national government control as the Metropolitan Police Force (MPF) and overseen by the commander of MetroCom.