PZInż 140
4TP, otherwise known as PZInż'' ''140, was a Polish light tank prototype. It was designed by 16 December 1936 by Edward Habich of the Państwowe Zakłady Inżynieryjne works. A light reconnaissance tank, it was to become a heavier replacement for TK-3 and TKS tankette A tankette is a tracked armoured fighting vehicle that resembles a small tank, roughly the size of a car. It is mainly intended for light infantry support and scouting.

Light Tank
A light tank is a Tank classification, tank variant initially designed for rapid movements in and out of combat, to outmaneuver heavier tanks. It is smaller with thinner vehicle armour, armor and a less powerful tank gun, main gun, tailored for better tactical mobility (military), mobility and ease of transport and military logistics, logistics. They are primarily employed in the screening (tactical), screening, armoured reconnaissance, armored reconnaissance, skirmishing, artillery observer, artillery observation, and supplementing landing operations in a fire support role of expeditionary warfare, expeditionary forces where larger, heavier tanks are unavailable or have difficulties operating safely or efficiently. The fast light tank was a major feature of the pre–World War II army buildup, where it was expected they would be used to exploit breakthroughs in enemy lines created by slower, heavier tanks, with the goal of disrupting communications and supply lines. Numerous sm ...
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Poland
Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukraine to the east, Slovakia and the Czech Republic to the south, and Germany to the west. The territory has a varied landscape, diverse ecosystems, and a temperate climate. Poland is composed of Voivodeships of Poland, sixteen voivodeships and is the fifth most populous member state of the European Union (EU), with over 38 million people, and the List of European countries by area, fifth largest EU country by area, covering . The capital and List of cities and towns in Poland, largest city is Warsaw; other major cities include Kraków, Wrocław, Łódź, Poznań, and Gdańsk. Prehistory and protohistory of Poland, Prehistoric human activity on Polish soil dates to the Lower Paleolithic, with continuous settlement since the end of the Last Gla ...
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Prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. Physical prototyping has a long history, and paper prototyping and virtual prototyping now extensively complement it. In some design workflow models, creating a prototype (a process sometimes called materialization) is the step between the Formal specification, formalization and the evaluation of an idea. A prototype can also mean a typical example of something such as in the use of the derivation prototypical. This is a useful term in identifying objects, behaviours and concepts which are considered the accepted norm and is analogous with terms ...
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Light Tank
A light tank is a Tank classification, tank variant initially designed for rapid movements in and out of combat, to outmaneuver heavier tanks. It is smaller with thinner vehicle armour, armor and a less powerful tank gun, main gun, tailored for better tactical mobility (military), mobility and ease of transport and military logistics, logistics. They are primarily employed in the screening (tactical), screening, armoured reconnaissance, armored reconnaissance, skirmishing, artillery observer, artillery observation, and supplementing landing operations in a fire support role of expeditionary warfare, expeditionary forces where larger, heavier tanks are unavailable or have difficulties operating safely or efficiently. The fast light tank was a major feature of the pre–World War II army buildup, where it was expected they would be used to exploit breakthroughs in enemy lines created by slower, heavier tanks, with the goal of disrupting communications and supply lines. Numerous sm ...
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Edward Habich
Edward Jan Habich () (31 January 1835, Warsaw – 31 October 1909, Lima, Peru) was a Polish engineer and mathematician. In 1876, he founded the National University of Engineering (), a renowned engineering school in Lima, Peru. He was a member of the Peruvian Geographic Society and an Honorary Citizen of Peru. In his native Poland he took part in the January Uprising The January Uprising was an insurrection principally in Russia's Kingdom of Poland that was aimed at putting an end to Russian occupation of part of Poland and regaining independence. It began on 22 January 1863 and continued until the last i ... against the Russian Empire in 1863. Burial Edward Jan Habich is buried at the Cementerio Presbítero Matías Maestro, Lima, Peru. Gallery Eduardo de Habich bust in Lima, Peru.jpg, Bust of Edward Jan Habich at the National University of Engineering in Lima, Peru Lima_peru_presbitero_habich_2.jpg, Sarcophagus of Eduardo Juan de Habich, Lima, Perú. References ...
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TK-3 (tankette)
The TK (TK-3) and TKS were Polish tankettes developed during the 1930s and used in the Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo .... Design and development The TK (also known as the TK-3) tankette was a Polish design produced from 1931 based on the chassis of the British Carden Loyd tankette, with an improved hull and more powerful engine, and vehicle armour, armour up to thick ( on the TKS). In 1939, up-arming of the tankettes with nkm wz. 38 FK autocannons began, but only 24 of these were completed before the outbreak of World War II. On 6 November 1934 Estonia purchased 6 vehicles from Poland, with the contract deal worth over 180,000 Estonian kroon, krones. The deal also included one additional tracked-lorry, and a motorcycle was given free as a bonus ...
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